Medical Forum / Diseases and Disorders / Alzheimer's / October 2007
13,620 seniors using more than 1 can/week artificially sweetened [aspartame] soft drinks had 8 % higher death risk, 1981-2004, Paganini-Hill A, Kawas CH, Corrada MM, U. Southern Cal., Prev. Med. 2007 April 44(4) 305-10: Murray 2007.10.12
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Rich Murray - 13 Oct 2007 05:06 GMT 13,620 seniors using more than 1 can/week artificially sweetened [aspartame] soft drinks had 8 % higher death risk, 1981-2004, Paganini- Hill A, Kawas CH, Corrada MM, U. Southern Cal., Prev. Med. 2007 April 44(4) 305-10: Murray 2007.10.12 http://RMForAll.blogspot.com October 12, 2007 http://groups.yahoo.com/group/aspartameNM/message/1479
"Individuals who drank more than 1 can/week of artificially sweetened (but not sugar-sweetened) soft drink (cola and other) had an 8 % increased risk (95 % CI: 1.01-1.16)."
"The increased death risk with consumption of artificially sweetened, but not sugar-sweetened, soft drinks suggests an effect of the sweetener rather than other components of the soft drinks, although residual confounding remains a possibility."
Prev Med. 2007 Apr; 44(4): 305-10. Epub 2006 Dec 29. Non-alcoholic beverage and caffeine consumption and mortality: the Leisure World Cohort Study. Paganini-Hill A, annliahi@usc.edu, Kawas CH, ckawas@uci.edu, Corrada MM. mcorrada@uci.edu, Department of Preventive Medicine, Keck School of Medicine of the University of Southern California, CA, USA.
OBJECTIVE: To examine the effects of non-alcoholic beverage and caffeine consumption on all-cause mortality in older adults.
METHODS: The Leisure World Cohort Study is a prospective study of residents of a California retirement community.
A baseline postal health survey included details on coffee, tea, milk, soft drink, and chocolate consumption.
Participants were followed for 23 years (1981-2004).
Risk ratios (RRs) of death were calculated using Cox regression for 8,644 women and 4,980 men (median age at entry, 74 years) and adjusted for age, gender, and multiple potential confounders.
RESULTS: Caffeine consumption exhibited a U-shaped mortality curve.
Moderate caffeine consumers had a significantly reduced risk of death (multivariable-adjusted RR = 0.94, 95 % CI: 0.89, 0.99 for 100-199 mg/ day and RR = 0.90, 95 % CI: 0.85, 0.94 for 200-399 mg/day compared with those consuming <50 mg/day).
Individuals who drank more than 1 can/week of artificially sweetened (but not sugar-sweetened) soft drink (cola and other) had an 8 % increased risk (95 % CI: 1.01-1.16).
Neither milk nor tea had a significant effect on mortality after multivariable adjustment.
CONCLUSIONS: Moderate caffeine consumption appeared beneficial in reducing risk of death.
Attenuation in the observed associations between mortality and intake of tea and milk with adjustment for potential confounders suggests that such consumption identifies those with other mortality-associated lifestyle and health risks.
The increased death risk with consumption of artificially sweetened, but not sugar-sweetened, soft drinks suggests an effect of the sweetener rather than other components of the soft drinks, although residual confounding remains a possibility. PMID: 17275898
Age Ageing. 2007 Mar; 36(2): 203-9. Type of alcohol consumed, changes in intake over time and mortality: the Leisure World Cohort Study. Paganini-Hill A, Kawas CH, Corrada MM. Department of Preventive Medicine, Keck School of Medicine of University of Southern California, USA. annliahi@usc.edu
BACKGROUND: modifiable behavioural risk factors including smoking and alcohol consumption are major contributing or actual causes of mortality.
OBJECTIVE: to examine the effect of alcohol intake on all-cause mortality in older adults.
Design and SETTING: prospective population-based cohort study of residents of a California, United States retirement community.
SUBJECTS: 8,877 women and 5,101 men (median age, 74 years) who in the early 1980s completed a postal health survey incluing details on alcohol consumption.
METHODS: participants were followed for 23 years (1981-2004) including two follow-up questionnaires (in 1992 and 1998) asking about current alcohol intake.
Age-adjusted and multivariate-adjusted risk ratios of death and 95 % confidence intervals were calculated separately for men and women, using proportional hazard regression.
RESULTS: of the 8,644 women and 4,980 men with complete information on the variables of interest and potential confounders, 6,930 women and 4,456 men had died (median age, 87 years).
Both men and women who drank alcohol had decreased mortality compared with non-drinkers.
Those who drank two or more drinks per day had a 15 % reduced risk of death.
The reduced risk was not limited to one type of alcohol.
Stable drinkers (those who reported drinking both at baseline and follow-up) had a significantly decreased risk of death compared with stable non-drinkers.
Those who started drinking at follow-up also had a significantly lower risk.
Women who quit drinking were at increased risk of death.
CONCLUSION: in elderly men and women, moderate alcohol intake exhibits a beneficial effect on mortality.
Those who quit may do so for health reasons that affect mortality. PMID: 17350977
http://aje.oxfordjournals.org/cgi/content/full/163/10/938 free full text
Am J Epidemiol. 2006 May 15; 163(10): 938-49. Epub 2006 Apr 26. Association of body mass index and weight change with all-cause mortality in the elderly. Maria M. Corrada 1,2, Claudia H. Kawas 1,2,3, Farah Mozaffar 2 and Annlia Paganini-Hill 4
1 Department of Neurology, School of Medicine, University of California, Irvine, CA 2 Institute for Brain Aging and Dementia, University of California, Irvine, CA 3 Department of Neurobiology and Behavior, School of Biological Sciences, University of California, Irvine, CA 4 Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA
Correspondence to Dr. Maria M. Corrada, Hewitt Hall, Room 1513, Department of Neurology, School of Medicine, University of California, Irvine, CA 92697-1400 (e-mail: mcorrada@uci.edu).
Received for publication August 22, 2005. Accepted for publication December 21, 2005.
The authors explored the relation of body mass index (BMI; weight (kg)/ height (m)**2) and weight change to all-cause mortality in the elderly, using data from a large, population-based California cohort study, the Leisure World Cohort Study.
They estimated relative risks of mortality associated with self- reported BMI at study entry, BMI at age 21 years, and weight change between age 21 and study entry.
Participants were categorized as underweight (BMI < 18.5), normal weight (BMI 18.5-24.9), overweight (BMI 25-29.9), or obese (BMI over 30).
Of 13,451 participants aged 73 years (on average) at study entry (1981-1985), 11,203 died during 23 years of follow-up (1981-2004).
Relative to normal weight, being underweight (relative risk (RR) = 1.51, 95 % confidence interval (CI): 1.38, 1.65) or obese (RR = 1.25, 95% CI: 1.13, 1.38) at study entry was associated with increased mortality.
People who were either overweight or obese at age 21 also had increased mortality (RR = 1.17, 95 % CI: 1.09, 1.25).
Participants who lost weight between age 21 and study entry had increased mortality regardless of their BMI category at age 21.
Obesity was significantly associated with increased mortality only among persons under age 75 years and among never or past smokers.
This study highlights the influence on older-age mortality risk of being overweight or obese in young adulthood and underweight or obese in later life. PMID: 16641311
"Participants were members of the Leisure World Cohort Study, a population-based study initiated in 1981.
A health questionnaire was mailed on June 1, 1981, to all residents who owned homes in Leisure World Laguna Hills, a retirement community in California.
Residents who moved into the community after this date were sent surveys in 1982, 1983, and 1985.
The survey was returned by 13,978 residents (61 percent).
Nonrespondents had higher hospitalization rates than respondents during the first year of follow-up and higher death rates during the first 3 years but not thereafter (3).
The cohort, like the population, is primarily Caucasian, educated, and upper middle-class; two thirds are female.
The health questionnaire collected information on demographic factors, medical history (selected data), exercise, and smoking, among other variables.
The institutional review boards of the University of Southern California and the University of California, Irvine, approved the study."
"We analyzed data for 13,451 participants after deleting 527 participants with missing data for the variables of interest.
Table 1 shows the characteristics of these participants.
The average age at study entry was 73 years, the average duration of follow-up was 13 years, and the majority of participants were women (64 percent).
Table 1 also shows the characteristics of participants by BMI category at study entry.
People in the higher BMI categories were younger at entry, had greater weight gain, and were more likely to have a history of hypertension or diabetes but were less likely to smoke or have a history of stroke or cancer."
"This research was funded by grants from the National Institutes of Health (R01CA32197 and R01AG21055), the Earl Carroll Trust Fund, and the Al and Trish Nichols Chair in Clinical Neuroscience.
Conflict of interest: none declared." ////////////////////////////////////////////////////////////
"Of course, everyone chooses, as a natural priority, to actively find, quickly share, and positively act upon the facts about healthy and safe food, drink, and environment."
Rich Murray, MA Room For All rmforall@comcast.net 505-501-2298 1943 Otowi Road, Santa Fe, New Mexico 87505
http://RMForAll.blogspot.com new primary archive
http://groups.yahoo.com/group/aspartameNM/messages group with 98 members, 1,479 posts in a public, searchable archive
http://groups.yahoo.com/group/aspartameNM/message/1472 bias, omissions, incuriosity = opportunity, aspartame safety evaluation, Magnuson BA, Burdock GA, Williams GM, 7 more, 2007 Sept, Ajinomoto funded 98 pages html [$ 32 781888262_content.pdf]: Murray 2007.09.15 ////////////////////////////////////////////////////////////
13 mainstream research studies in 24 months showing aspartame toxicity, also 3 relevant studies on methanol and formaldehyde: Murray 2007.10.10 http://groups.yahoo.com/group/aspartameNM/message/1464
Aspartame toxicity was shown in thirteen detailed mainstream research studies in 24 months in work by expert teams in South Africa, England, Italy, Greece, Hungary, and Mexico.
Very little has been publicized in mass print and broadcast media.
Also highly relevant are a study in South Korea that finds levels of methanol similar to those from aspartame drinks cause the hangovers from alcohol drinks, a study in China on Alzheimer's type damage in nerve cells from low dose formaldehyde, and an IARC review by 25 experts that determines formaldehyde to be a human carcinogen. ////////////////////////////////////////////////////////////
http://groups.yahoo.com/group/aspartameNM/message/1475 19,000 people, the 4 % of users of aspartame who drink average 5 cans daily, have more problems in NIH AARP study of 474,000 people: Murray 2007.09.21 http://RMForAll.blogspot.com September 21, 2007
This is the first good data about the percentage of aspartame users who use over 3 cans daily, averaging 5 cans daily at 200 mg per 12 oz can diet soda.
About 4 % of 473,984 is 19,000 people, with a peak intake of 17 cans daily, and average 5 cans daily.
It would be worthwhile to investigate a wide variety of symptoms for the 0.1 % of highest level users, about 500 people.
For about 200 million USA aspartame users, this would be 200,000 people.
Table 1 reveals consistent increase in problems from
--------------------- zero to (400-600) to (over 600) mg/d aspartame intake:
% of cohort ---------- 46 -------- 5 -------- 4 %
mean aspartame mg/d --- 0 -------441 ------ 986
16+ education -------- 37 ------- 40 ------- 34 %
diabetes history ------ 3 ------- 22 ------- 26 %
alcohol g/d ---------- 14 ------- 11 ------- 13
never smoke ---------- 36 ------- 31 ------- 29 %
Body Mass Index ------ 26 ------- 29 ------- 29
18.5 - 25 ------------ 42 ------- 21 ------- 19 %
30 - 35 -------------- 13 ------- 23 ------- 26 %
over 35 -------------- 4 ------- 10 ------- 13 %
Physical activity %:
under 3-4/mo --------- 32 ------- 32 ------- 37 %
under 1-2/wk --------- 22 ------- 21 ------- 19 %
over 3-4/wk ---------- 45 ------- 45 ------- 43 %
Calories kcal ----- 1,919 ---- 1,855 ---- 2,044 %
Caffeine mg/d ------ 393 ------ 364 ------ 424
There do seem to be many increases of problems from the second to third row, as mean aspartame use doubles.
Granted, this is cherry picking the data, selecting interesting patterns.
Correlations alone do not prove any direction of causation.
Nevertheless, it may be of value to study the correlations for increasing aspartame intake among the 4 % using over 600 mg, the equivalent of 3 cans 12-oz cans diet soda daily. The average use for this group is 5 cans daily.
For instance, are a minority of these heavy users displaying the great majority of the problems that are reflected in the mean for each level of use, with most users only having little or no increase in problems?
This is a group of about 20,000 people.
http://groups.yahoo.com/group/aspartameNM/message/1141 Nurses Health Study can quickly reveal the extent of aspartame (methanol, formaldehyde, formic acid) toxicity: Murray 2004.11.21
The Nurses Health Study is a bonanza of information about the health of probably hundreds of nurses who use 6 or more cans daily of diet soft drinks -- they have also stored blood and tissue samples from their immense pool of subjects, over 100,000 for decades.
Cancer Epidemiol Biomarkers Prev. 2006 Sep; 15(9): 1654-9. Comment in: Cancer Epidemiol Biomarkers Prev. 2007 Jul; 16(7): 1527-8; author reply 1528-9. Consumption of aspartame-containing beverages and incidence of hematopoietic and brain malignancies. Lim U, Subar AF, Mouw T, Hartge P, Morton LM, Stolzenberg-Solomon R, Campbell D, Hollenbeck AR, Schatzkin A. Division of Cancer Control and Population Sciences, National Cancer Institute, 6130 Executive Boulevard, EPN 4005, Rockville, MD 20852-7344, USA. PMID: 16985027
Unhee Lim 1, Amy F. Subar 2, subara@mail.nih.gov, Traci Mouw 1, Patricia Hartge 1, Lindsay M. Morton 1, Rachael Stolzenberg-Solomon 1, David Campbell 3, Albert R. Hollenbeck 4 and Arthur Schatzkin 1
1 Division of Cancer Epidemiology and Genetics,
2 Division of Cancer Control and Population Sciences, National Cancer Institute, NIH, Department of Health and Human Services;
3 Information Management Services, Inc., Rockville, Maryland; and
4 AARP, Washington, District of Columbia
Requests for reprints: Amy Subar, Division of Cancer Control and Population Sciences, National Cancer Institute, 6130 Executive Boulevard, EPN 4005, Rockville, MD 20852-7344. Phone: 301-594-0831; Fax: 301-435-3710. E-mail: subara@mail.nih.gov
http://cebp.aacrjournals.org/cgi/content/full/15/9/1654 free full text
BACKGROUND: In a few animal experiments, aspartame has been linked to hematopoietic and brain cancers.
Most animal studies have found no increase in the risk of these or other cancers.
Data on humans are sparse for either cancer.
Concern lingers regarding this widely used artificial sweetener.
OBJECTIVE: We investigated prospectively whether aspartame consumption is associated with the risk of hematopoietic cancers or gliomas (malignant brain cancer).
METHODS: We examined 285,079 men and 188,905 women ages 50 to 71 years in the NIH-AARP Diet and Health Study cohort
Daily aspartame intake was derived from responses to a baseline self- administered food frequency questionnaire that queried consumption of four aspartame-containing beverages (soda, fruit drinks, sweetened iced tea, and aspartame added to hot coffee and tea) during the past year.
Histologically confirmed incident cancers were identified from eight state cancer registries.
Multivariable-adjusted relative risks (RR) and 95% confidence intervals (CI) were estimated using Cox proportional hazards regression that adjusted for age, sex, ethnicity, body mass index, and history of diabetes.
RESULTS: During over 5 years of follow-up (1995-2000), 1,888 hematopoietic cancers and 315 malignant gliomas were ascertained.
Higher levels of aspartame intake were not associated with the risk of overall hematopoietic cancer (RR for over 600 mg/d, 0.98; 95 % CI, 0.76-1.27), glioma (RR for over 400 mg/d, 0.73; 95 % CI, 0.46-1.15; P for inverse linear trend = 0.05), or their subtypes in men and women.
CONCLUSIONS: Our findings do not support the hypothesis that aspartame increases hematopoietic or brain cancer risk. PMID: 16985027
"We cannot exclude the possibility that higher aspartame consumption than that observed in this study may be associated with an elevated risk of hematopoietic or brain cancers.
In the laboratory study with positive findings, animals were fed doses starting from 4 mg up to 5,000 mg per kg body weight.
Significantly elevated lymphomas and leukemias were observed in female rats fed 20 mg of aspartame and higher (e.g., 1,200 mg for humans weighing 60 kg or 132 lb; refs. 13, 14).
The reported aspartame intake in our data ranged from 0 to 3,400 mg/d with sparse numbers in the upper intake categories (under 1 % consuming over 1,200 mg/d).
However, we did not detect any increase in risk estimates in the highest categories (over 1,200 or 2,000 mg/d, which is equivalent to about 7 to 11 cans of soft drinks daily) compared with the lowest categories, and the associations were similarly null in both men and women."
Table 1. NIH-AARP Diet and Health Study aspartame intake levels from beverages, 1995-2000 (N = 473,984) [ adapted from article ]
0 - under 100 - 100-200 - 200-400 - 400-600 - 600-1200 - over 1200 mg/ d
cohort % 46 ------- 25 ------ 13 ------ 7 -------- 5 -- about 3 --- under 1 ////////////////////////////////////////////////////////////
http://groups.yahoo.com/group/aspartameNM/message/1472 bias, omissions, incuriosity, opportunity, aspartame safety evaluation, Magnuson BA, Burdock GA, Williams GM, 7 more, 2007 Sept, Ajinomoto funded 98 pages html [$ 32 781888262_content.pdf]: Murray 2007.09.14
Eur J Clin Nutr. 2007 Aug 8; [Epub ahead of print] Direct and indirect cellular effects of aspartame on the brain. Humphries P, Pretorius E, resia.pretorius@up.ac.za, Naudé H. [1] Department of Anatomy, University of Pretoria, Pretoria, Gauteng, South Africa [2] Department of Anatomy, University of the Limpopo, South Africa. http://groups.yahoo.com/group/aspartameNM/message/1463
Ultrastruct Pathol. 2007 Mar-Apr; 31(2): 77-83. Ultrastructural changes to rabbit fibrin and platelets due to aspartame. Pretorius E, Humphries P. Department of Anatomy, Faculty of Medicine, University of Pretoria, South Africa. [ Humphries P also at Department of Anatomy, University of Limpopo. Medunsa Campus, Garankuwa. South Africa ] *Correspondence to E. Pretorius, BMW Building, PO Box 2034, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa http://groups.yahoo.com/group/aspartameNM/message/1452
[ not about aspartame, but highly suggestive... ] http://groups.yahoo.com/group/aspartameNM/message/1471 Food additives and hyperactive behaviour in kids, McCann D, Grimshaw K, Sonuga-Barke, Warner JO, Stevenson J, et al, The Lancet 2007.09.06 pdf 454 KB: Murray 2007.09.06
www.dailymail.co.uk/pages/live/articles/health/womenfamily.html?in_article_id=45 \3431&in_page_id=1799 By UK Daily Mail Newspaper The proof food additives ARE as bad as we feared By SEAN POULTER Last updated at 09:53am on 18th May 2007
[ This team will publish their confirming study later in 2007. ] http://adc.bmj.com/cgi/content/full/89/6/506 Archives of Disease in Childhood 2004; 89(6): 506-511 Erratum in: Arch Dis Child. 2005 Aug; 90(8): 875. © 2004 BMJ Publishing Group & Royal College of Paediatrics and Child Health The effects of a double blind, placebo controlled, artificial food colourings and benzoate preservative challenge on hyperactivity in a general population sample of preschool children B Bateman 1, J O Warner 1, j.o.warner@imperial.ac.uk, E Hutchinson 3, T Dean 5, tara.dean@port.ac.uk, P Rowlandson 4, Dr. Piers Rolandson, Paediatric Tutor C Gant 5, J Grundy 5, C Fitzgerald 3 and J Stevenson 2 jsteven@soton.ac.uk, 1 Infection, Inflammation and Repair Division, University of Southampton, Southampton, UK 2 Department of Psychology, University of Southampton, Southampton, UK 3 Department of Clinical Psychology, St Mary's Hospital, Isle of Wight, UK 4 Department of Paediatrics, St Mary's Hospital, Isle of Wight, UK 5 David Hide Asthma and Allergy Research Centre, St Mary's Hospital, Isle of Wight, UK http://groups.yahoo.com/group/aspartameNM/message/1461
www.ehponline.org/members/2007/10271/10271.pdf free full text 24 pages National Institutes of Health U.S. Department of Health and Human Services ENVIRONMENTAL HEALTH PERSPECTIVES Lifespan Exposure to Low Doses of Aspartame Beginning During Prenatal Life Increases Cancer Effects in Rats doi:10.1289/ehp.10271 (available at http://dx.doi.org/) Online 13 June 2007 Morando Soffritti 1, Fiorella Belpoggi 1, Eva Tibaldi 1, Davide Degli Esposti 1, Michela Lauriola 1 1 Cesare Maltoni Cancer Research Center, European Ramazzini Foundation of Oncology and Environmental Sciences, Bologna Italy Address of the institution: Cesare Maltoni Cancer Research Center, European Ramazzini Foundation of Oncology and Environmental Sciences Castello di Bentivoglio, Via Saliceto, 3, 40010 Bentivoglio, Bologna, Italy +39 051 6640460 fax +39 051 6640223 crcfr@ramazzini.it, www.ramazzini.it Address correspondence to: M. Soffritti Acknowledgements: This research was supported entirely by the European Ramazzini Foundation Environmental Sciences. The authors declare that they have no competing financial interests. http://groups.yahoo.com/group/aspartameNM/message/1441
http://www.ramazzini.it/fondazione/docs/NYAS_Aspartame_Ramazzini.pdf Results of Long-Term Carcinogenicity Bioassay on Sprague-Dawley Rats Exposed to Aspartame Administered in Feed Ann. N.Y. Acad. Sci. 2006 Sep; 1076: 559-577. Fiorella Belpoggi, Morando Soffritti, Michela Padovani, Davide Degli Esposti, Michelina Lauriola, and Franco Minardi. The end judges everything -- HERODOTUS (480-425 B.C.) The History Cesare Maltoni Cancer Research Center, European Foundation of Oncology and Environmental Sciences 'B. Ramazzini', 40010 Bentivoglio, Bologna, Italy http://groups.yahoo.com/group/aspartameNM/message/1382 [ and, previously ] First experimental demonstration of the multipotential carcinogenic effects of aspartame administered in the feed to Sprague- Dawley rats. Environ. Health Perspect. 2006 Mar; 114: 379-385. PMID: 16507461 Soffritti M, Belpoggi F, Degli Esposti D, Lambertini L, Tibaldi E, Rigano A. Environmental Health Perspectives Volume 113, Number 11 November 2005 Current print issue The full version of this article is available for free in PDF format. http://ehp.niehs.nih.gov/members/2005/8711/8711.pdf 35 pages First Experimental Demonstration of the Multipotential Carcinogenic Effects of Aspartame Administered in the Feed to Sprague-Dawley Rats. Morando Soffritti, Fiorella Belpoggi, Davide Degli Esposti, Luca Lambertini, Eva Tibaldi, and Anna Rigano. doi:10.1289/ehp.8711 (available at http://dx.doi.org/) Online 17 November 2005 The National Institute of Environmental Health Sciences National Institutes of Health U.S. Department of Health and Human Services http://www.ehponline.org/ Cesare Maltoni Cancer Research Center, European Ramazzini Foundation of Oncology and Environmental Sciences Sofritti, M. et al. 2005. Aspartame induces lymphomas and leukaemias in rats. Eur. J. Oncol. 2005; 10: 107-116. http://groups.yahoo.com/group/aspartameNM/message/1250
Food Chem Toxicol. 2007 Jun 16;[Epub ahead of print] The effect of aspartame metabolites on the suckling rat frontal cortex acetylcholinesterase. An in vitro study. Simintzi I, Schulpis KH, inchildh@otenet.gr, Angelogianni P, Liapi C, Tsakiris S. stsakir@cc.uoa.gr, Department of Experimental Physiology, Medical School, University of Athens, P.O. Box 65257, GR 15401 Athens, Greece. http://groups.yahoo.com/group/aspartameNM/message/1459
Toxicology. 2007 May 18; [Epub ahead of print] l-Cysteine and glutathione restore the reduction of rat hippocampal Na(+),K(+)-ATPase activity induced by aspartame metabolites. Simintzi I, Schulpis KH, Angelogianni P, Liapi C, Tsakiris S. Department of Experimental Physiology, Medical School, Athens University, P.O. Box 65257, GR-15401 Athens, Greece. http://groups.yahoo.com/group/aspartameNM/message/1447
Pharmacol Res. 2007 May 13; [Epub ahead of print] The effect of aspartame on acetylcholinesterase activity in hippocampal homogenates of suckling rats. Simintzi I, Schulpis KH, Angelogianni P, Liapi C, Tsakiris S. Department of Experimental Physiology, Medical School, University of Athens, P.O. Box 65257, GR-15401 Athens, Greece. http://groups.yahoo.com/group/aspartameNM/message/1444
Eur J Clin Nutr. 2005 Dec 14; [Epub ahead of print] The effect of L-cysteine and glutathione on inhibition of Na(+), K(+)-ATPase activity by aspartame metabolites in human erythrocyte [red blood cell] membrane. Schulpis KH, Kleopatra H. Schulpis, MD, PhD. Institute of Child Health, Aghia Sophia Children's Hospital, GR-11527 Athens (Greece) +30 1 7708291, Fax +30 1 7700111 inchildh@otenet.gr Papassotiriou I, biochem@paidon-agiasofia.gr, Tsakiris T, Tsakiris S. Stylianos Tsakiris. stsakir@cc.uoa.gr, 1 Institute of Child Health, Research Center, 'Aghia Sophia' Children's Hospital, Athens, Greece. ggbriass@med.uoc.gr ersi_voskaridou@yahoo.com mmoschov@med.uoa.gr siahanidou@hotmail.com http://groups.yahoo.com/group/aspartameNM/message/1279
Pharmacol Res. 2005 Aug 26; [Epub ahead of print] The effect of aspartame metabolites on human [red blood cell] erythrocyte membrane acetylcholinesterase activity. Tsakiris S, Giannoulia-Karantana A, Simintzi I, Schulpis KH. Department of Experimental Physiology, Medical School, University of Athens, P.O. Box 65257, GR-154 01 Athens, Greece. Stylianos Tsakiris. stsakir@cc.uoa.gr, Giannoulia-Karantana A. First Department of Pediatrics, Aghia Sophia Children's Hospital, University of Athens, Greece. Kleopatra H. Schulpis, MD, PhD. Institute of Child Health, Aghia Sophia Children's Hospital, GR-11527 Athens (Greece) Tel. +30 1 7708291, Fax +30 1 7700111 inchildh@otenet.gr [ Papoutsakis T. tina.papoutsakis@hua.gr, Papadopoulos G. Department of Biochemistry and Biotechnology, University of Thessaly, Ploutonos 26, 41221 Larisa, Greece papg@chem.auth.gr, ] http://groups.yahoo.com/group/aspartameNM/message/1213
In Vivo. 2007 Jan-Feb; 21(1): 89-92. The effect of aspartame administration on oncogene and suppressor gene expressions. Gombos K, katalin_gombos@yahoo.com, Varjas T, Orsos Z, Polyak E, Peredi J, Varga Z, Nowrasteh G, Tettinger A, Mucsi G, Ember I. Faculty of Medicine, Institute of Public Health University of Pecs, Pecs, Hungary. http://groups.yahoo.com/group/aspartameNM/message/1414
Hum Exp Toxicol. 2006 Aug; 25(8): 453-9. The effect of aspartame on rat brain xenobiotic-metabolizing enzymes. Vences-Mejia A 1, Labra-Ruiz N 1, Hernandez-Martinez N 1, Dorado-Gonzalez V 1, Gomez-Garduno J 1, Perez-Lopez I 1, Nosti-Palacios R 1, Camacho Carranza R 2, Espinosa-Aguirre JJ 2. Laboratorio de Toxicologia Genetica, 1: Instituto Nacional de Pediatria, Insurgentes Sur, 3700-C, 04530 Mexico, DF Mexico. 2: Instituto de Investigaciones Biomédicas, UNAM, Apartado postal 70228, Ciudad Universitaria 04510 México, D.F., México http://www.biomedicas.unam.mx/index.asp *Correspondence: JJ Espinosa-Aguirre, Instituto de Investigaciones Biome´dicas, UNAM, Apartado postal 70228, Ciudad Universitaria 04510 Me´xico, D.F., Me´xico Human & Experimental Toxicology (2006) 25(8): 453 - 459. www.sagepublications.com c 2006 SAGE Publications 10.1191/0960327106het646oa [ Dra. Araceli Vences M Jefa de Laboratorio de Toxicologia Genetica 6° P de Hospital Laboratorios 10 84 09 00 Ext.1410 -1448 aritaven@yahoo.com.mx, ] http://groups.yahoo.com/group/aspartameNM/message/1373
Toxicol Sci. 2006 Mar;90(1):178-87. Synergistic interactions between commonly used food additives in a developmental neurotoxicity test. Lau K, McLean WG, Williams DP, Howard CV. Developmental Toxicopathology Unit, Department of Human Anatomy & Cell Biology, University of Liverpool, Sherrington Buildings, Liverpool L69 3GE, UK; Department of Pharmacology & Therapeutics, University of Liverpool, Sherrington Buildings, Liverpool L69 3GE, UK. W. Graham McLean w.g.mclean@liv.ac.uk, C. V. Howard c.v.howard@liverpool.ac.uk, D. P. Williams dom@liv.ac.uk, 0151 794 5791 http://www.liv.ac.uk/ Miss. Karen Lau karenlau@liv.ac.uk, 0151 795 4223 http://groups.yahoo.com/group/aspartameNM/message/1271
http://www.biomedcentral.com/content/pdf/1471-2202-8-9.pdf free full text 28 pages This Provisional PDF corresponds to the article as it appeared upon acceptance. Copyedited and fully formatted PDF and full text (HTML) versions will be made available soon. Amyloid-like aggregates of neuronal tau induced by formaldehyde promote apoptosis of neuronal cells BMC Neuroscience 2007 Jan 23, 8(1): 9 doi: 10.1186/1471-2202-8-9 Chunlai Nie niecl1022@ioz.ac.cn, Xing sheng Wang step@sun5.ibp.ac.cn, Ying Liu liuy@moon.ibp.ac.cn, Sarah Perrett sperrett@ibp.ac.cn, Rongqiao He herq@sun5.ibp.ac.cn, ISSN 1471-2202 Article type Research article Submission date 15 August 2006 Acceptance date 23 January 2007 Publication date 23 January 2007 Article URL http://www.biomedcentral.com/1471-2202/8/9 Chun Lai Nie 1,3, Xing Sheng Wang 1,3, Ying Liu 1, Sarah Perrett 2 and Rong Qiao He 1,3* 1 State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, 15 Datun Rd, Chaoyang District, Beijing 100101, China 2 National Laboratory of Biomacromolecules, Institute of Biophysics, 15 Datun Rd, Chaoyang District, Beijing 100101, China 3 Graduate School, Chinese Academy of Sciences, 19 Yuquan Rd, Shijingshan District, Beijing 100049, China *Corresponding author http://groups.yahoo.com/group/aspartameNM/message/1406
Addict Biol. 2005 Dec;10(4): 351-5. Concentration changes of methanol in blood samples during an experimentally induced alcohol hangover state. Woo YS, Yoon SJ, Lee HK, Lee CU, Chae JH, Lee CT, Kim DJ. Chuncheon National Hospital, Department of Psychiatry, The Catholic University of Korea, Seoul, Korea. http://www.cuk.ac.kr/eng/ sysop@catholic.ac.kr Songsin Campus: 02-740-9714 Songsim Campus: 02-2164-4116 Songeui Campus: 02-2164-4114 http://www.cuk.ac.kr/eng/sub055.htm eight hospitals http://groups.yahoo.com/group/aspartameNM/message/1394
" Absorbed formaldehyde can be oxidized to formate and carbon dioxide or can be incorporated into biologic macromolecules. "
[ References include: Soffritti M, Belpoggi F, Lambertini L, Lauriola M, Padovani M, Maltoni C. 2002. Results of long-term experimental studies on the carcinogenicity of formaldehyde and acetaldehyde in rats. Ann NY Acad Sci 982: 87-105.
Soffritti M, Maltoni C, Maffei F, Biagi R. 1989. Formaldehyde: an experimental multipotential carcinogen. Toxicol Ind Health 5:699-730. " Morando Soffritti is a member of the Working Group. ]
http://www.ehponline.org/members/2005/7542/7542.html free full text
After a thorough discussion of the epidemiologic, experimental, and other relevant data, the working group concluded that formaldehyde is carcinogenic to humans, based on sufficient evidence in humans and in experimental animals.
In the epidemiologic studies, there was sufficient evidence that formaldehyde causes nasopharyngeal cancer, "strong but not sufficient" evidence of leukemia, and limited evidence of sinonasal cancer.
The working group also concluded that 2-butoxyethanol and 1-tert-butoxy-2-propanol are not classifiable as to their carcinogenicity to humans, each having limited evidence in experimental animals and inadequate evidence in humans.
These three evaluations and the supporting data will be published as Volume 88 of the IARC Monographs. PMID: 16140628
Environ Health Perspect. 2005 Sep; 113(9): 1205-8. Meeting report: summary of IARC monographs on formaldehyde, 2- butoxyethanol, and 1-tert-butoxy-2-propanol. Cogliano VJ, Vincent James Cogliano cogliano@iarc.fr, Grosse Y, Yann Grosse grosse@iarc.fr, Baan RA, Robert A. Baan baan@iarc.fr, Straif K, Kurt straif@iarc.fr, Secretan MB, Marie Béatrice Secretan secretan@iarc.fr, El Ghissassi F, Fatiha El Ghissassi elghissassi@iarc.fr, Working Group for Volume 88.
IARC, 150 Cours Albert Thomas, 69372 Lyon CEDEX 08, France Tel: +33 (0)4 72 73 84 85 - Fax: +33 (0)4 72 73 85 75 © IARC 2004 - All Rights Reserved http://monographs.iarc.fr cie@iarc.fr,
Monographs Recently Published
IARC Monographs Vol 88 Formaldehyde, 2-Butoxyethanol and 1-tert-Butoxypropan-2-ol December 2006 478 pages ISBN 92 832 1288 6 US$ 40
This volume re-evaluates the available evidence on the carcinogenic potential of formaldehyde, a substance that is found in the workplace and in the environment. Formaldehyde is widely used in resins that bind wood products, pulp and paper; in glasswool and rockwool insulation; in plastics and coatings, textile finishing, chemical manufacture; and as a disinfectant and preservative. Also evaluated are two glycol ethers, 2-butoxyethanol and 1-tert- butoxypropan-2-ol, which are widely used as solvents in paints and paint thinners, coatings, glass and surface cleaners, inks, adhesives, personal-care products, and as chemical intermediates. As for formaldehyde, there is sufficient evidence in epidemiological studies for nasopharyngeal cancer, strong but not sufficient evidence for leukaemia, and limited evidence for sinonasal cancer. The extensive scientific database on the mechanisms by which formaldehyde can induce nasal-tract cancer in humans is considered. These data provide strong support for the empirical observation of nasopharyngeal cancer in humans. In contrast, the lack of information on possible mechanisms by which formaldehyde might increase the risk for leukaemia in humans tempered the interpretation of the epidemiological data on that cancer. Although this volume focuses on a qualitative assessment of the carcinogenic potential of formaldehyde, subsequent predictions of the risks for nasopharyngeal cancer should consider pertinent information on mechanisms of carcinogenesis, including genotoxicity and dose- dependent cytoxicity. A theme common to the three evaluations is the consideration of mechanistic information to develop and evaluate hypotheses on the sequence of steps that lead to the induction of tumours in experimental animals. The hypothesized mechanisms described provide an interesting set of cases that range from a vast literature on respiratory tract tumours in rats induced by the inhalation of formaldehyde to some more tentative hypotheses on the various tumours observed in animals following exposure to both glycol ethers. Recurring issues were the criteria that characterize a rare tumour or how to introduce additional information to resolve difficult questions; for example, how to consider the results of historical controls.
International Agency for Research on Cancer, Lyon, France.
An international, interdisciplinary working group of expert scientists met in June 2004 to develop IARC Monographs on the Evaluation of the Carcinogenic Risk of Chemicals to Humans (IARC Monographs) on formaldehyde, 2-butoxyethanol, and 1-tert-butoxy-2-propanol.
Each IARC Monograph includes a critical review of the pertinent scientific literature and an evaluation of an agent's potential to cause cancer in humans.
Key words: 1-tert-butoxy-2-propanol, 2-butoxyethanol, carcinogen, formaldehyde, glycol ethers, hazard identification, IARC Monographs, leukemia, nasopharyngeal cancer, sinonasal cancer. Environ Health Perspect 113: 1205-1208 (2005) . doi:10.1289/ehp.7542 available via http://dx.doi.org/ [Online 12 May 2005]
Address correspondence to V.J. Cogliano, Carcinogen Identification and Evaluation, International Agency for Research on Cancer, 150 cours Albert Thomas, 69372 Lyon cedex 08, France. 33-4-72-73-84-76. fax 33-4-72-73-83-19 cogliano@iarc.fr,
The Working Group for Volume 88 of the IARC Monographs includes:
Ulrich Andrae (Germany) , andrae@gsf.de, Dr. Ulrich Andrae, GSF- Institut für Toxikologie,. Postfach 1129, D-85758 Neuherberg, Germany Fax: 149-089-3187-3449 Sherwood Burge (UK),
Rajendra S Chhabra (USA) , http://dir.niehs.nih.gov/dirtob/chhabra.htm chhabrar@niehs.nih.gov, General Toxicology Group, TOB, ETP, DIR
John Cocker (UK) , Health and Safety Laboratory, Buxton, UK john.cocker@hsl.gov.uk,
David N Coggon (UK) , MRC Environmental Epidemiology Unit at the University of Southampton, UK dnc@mrc.soton.ac.uk,
Rory Conolly (USA) , Rconolly@ciit.org, Senior Research Biologist, National Center for Computational Toxicology, Office of Research and Development, U.S. Environmental Protection Agency
Paul Demers (Canada) , pdemers@unixg.ubc.ca, Occupational Hygiene Institute, University of British Columbia
David A Eastmond (USA) , david.eastmond@ucr.edu, Enviromental Toxicology Graduate Program, University of California Riverside, CA 92521 (951) 827-4497 (Voice) (951) 827-3087 (Fax)
Elaine Faustman (USA) , faustman@u.washington.edu, Professor, Env. and Occ. Health Sciences, Adjunct Professor, Evans School 206-685-2269
Victor J Feron (the Netherlands) , TNO Nutrition and Food Research (retired), The Netherlands TNO-CIVO TOXICOLOGY AND NUTRITION INSTITUTE Utrechtseweg 48 3704 HE Zeist The Netherlands (31)-3404 44 144
Michel Gérin (Canada, Chair) , gerinm@ere.umontreal.ca, Departement de medecine du travail et d'hygiene du milieu, Universite de Montreal, Quebec, Canada.
Marcel Goldberg (France) , marcel.goldberg@st-maurice.inserm.fr, France -- National Institute of Health and Medical Research INSERM Unite 88, HNSM 14 Rue de Val d'Osne F-94410 St. Maurice France [33] 1-451-83859 [33] 1-451-83889 Departement Sante Travail, Institut de Veille Sanitaire, 12, rue du Val d'Osne, 94410 Saint Maurice, France
Bernard D Goldstein (USA) , bdgold@pitt.edu, Director of the Environmental and Occupational Health Sciences Institute and Professor and Chair of the Department of Environmental and Community Medicine at UMDNJ - Robert Wood Johnson Medical School. Dean's Office, University of Pittsburgh Graduate School of Public Health, A624 Crabtree Hall, 130 DeSoto St., Pittsburgh, PA 15261, USA.
Roland C Grafström (Sweden) , roland.grafstrom@imm.ki.se, Roland C Grafström, Institute of Environmental Medicine, Karolinska Institutet, Box 210, S−17177 Stockholm, Sweden Telefax: +46-8−329402
Johnni Hansen (Denmark) , johnni@cancer.dk, PhD, Senior researcher, Danish Cancer Registry , Institute of Cancer Epidemiology, Danish Cancer Society, Strandboulevarden 49, DK-2100, Copenhagen, Denmark.
Michael Hauptmann (USA) , The National Cancer Institute
Kathy Hughes (Canada) , Head, Existing Substances Section 1, Health Canada,
Ted Junghans (USA) , tjunghans@tech-res.com, Technical Resources International, Inc., 6500 Rock Spring Drive, Suite 650, Bethesda, MD 20817, USA.
Dan Krewski (Canada) , MHA, MSc, PhD dkrewski@uottawa.ca, Professor Director, R. Samuel McLaughlin Centre for Population Health Risk Assessment, Institute of Population Healt, 1 Stewart Street, Room 320, Phone: (613) 562-5381 Fax: (613)562-5380
Steve Olin (USA) , solin@ilsi.org, ILSI International Life Sciences Institute
Martine Reynier (France) , martine.reynier@inrs.fr, Mme Martine REYNIER, Institut National de Recherche et de Sécurité (INRS), 30, rue Olivier Noyer, 75680 Paris Cedex 14 (France) Tel : +33 (0)1 40 44 30 81 Fax : +33 (0)1 40 44 30 54
Judith Shaham (Israel) , yshaham@bezeqint.net, Occupational Cancer Department, National Institute of Occupational and Environmental Health, Raanana, Israel. MD, Occupational Cancer Unit, Occupational Health & Rehabilitation Institute, P.O. Box 3, Raanana 43100, ISRAEL
Morando Soffritti (Italy) , crcfr@ramazzini.it, European Foundation of Oncology and Environmental Sciences "B. Ramazzini", Cesare Maltoni Cancer Research Center, Bologna, Italy
Leslie Stayner (USA) , lstayner@uic.edu, Division of Epidemiology and Biostatistics, University of Illinois at Chicago School of Public Health (M/C 923), 1603 West Taylor Street, Room 971, Chicago, IL 60612. E-mail:
Patricia Stewart (USA) , National Food Safety and Toxicology Center, 165 Food Safety and Toxicology Building, Michigan State University, East Lansing, MI 48824; fax (517) 432-2310
Douglas Wolf (USA) , wolf.doug@epa.gov, DVM, PhD, USEPA, (Toxicology)
We gratefully acknowledge the important contributions of the administrative staff of the IARC Monographs: S. Egraz, M. Lézère, J. Mitchell, and E. Perez. The IARC Monographs are supported, in part, by grants from the U.S. National Cancer Institute, the European Commission, the U.S. National Institute of Environmental Health Sciences, and the U.S. Environmental Protection Agency. The authors declare they have no competing financial interests. Received 31 August 2004 ; accepted 12 May 2005. http://groups.yahoo.com/group/aspartameNM/message/1417
http://groups.yahoo.com/group/aspartameNM/message/1467 4 cases of aspartame-induced thrombocytopenia [ very low platelets in blood ], HJ Roberts MD, Letter in Southern Medical Journal 2007 May: 100(5); 543: Murray 2007.08.25
http://groups.yahoo.com/group/aspartameNM/message/1468 Formaldehyde induced urticarial vasculitis in male medical student, age 40, Michael Pellizzari, Gillian Marshman, Flinders U., Australasian J. Dermatol. 2007 Aug: Murray 2007.08.29
http://groups.yahoo.com/group/aspartameNM/message/1469 highly toxic formaldehyde, the cause of alcohol hangovers, is made by the body from 100 mg doses of methanol from dark wines and liquors, dimethyl dicarbonate, and aspartame: Murray 2007.08.31
http://groups.yahoo.com/group/aspartameNM/message/1470 new details on how formaldehyde and formic acid from methanol are neurotoxic: Chun Lai Nie, Rong Giao He, et al, PLoS ONE 2(7): e629 2007.07.18 Chinese Academy of Sciences, Beijing: Murray 20097.09.01 ////////////////////////////////////////////////////////////
http://groups.yahoo.com/group/aspartameNM/message/1457 aspartame bans, tis more an avalanche than a trend...: Rich Murray 2007.08.17
[ see also: http://groups.yahoo.com/group/aspartameNM/message/1458 ASDA, Wal-Mart's UK supermarket chain, bans artificial colors, trans fats, MSG and aspartame, Marguerite Kelly, The Washington Post: Murray 2007.08.03 ]
So far, USA print and broadcast media are deaf, blind, and dumb, regarding recent major bans of aspartame and MSG in the UK and EU.
The EU Parliament voted July 12 to ban artificial sweeteners in newly born and infant foods.
On May 15 four huge UK supermarket chains announced bans of aspartame and MSG, food dyes, and many additives to protect kids from ADHD -- Sainsbury, Tesco, Marks & Spencer, and ASDA, a unit of WalMart.
May 31: Coca-Cola and the much larger Cargill Inc., after years of secret development, with 24 patents, will soon sell rebiana (stevia) in drinks and food in the many nations where it is approved as a sweetener -- for decades a major sweetener in Japan, China, Korea, Taiwan, Thailand, Malasia, Saint Kitts, Nevis, Brazil, Peru, Paraguay, Uruguay, and Israel, and an approved supplement in USA, Australia, and Canada, according to Wikipedia.
http://groups.yahoo.com/group/aspartameNM/message/1454 recent research and news re aspartame and stevia: Murray 2007.08.16
http://groups.yahoo.com/group/aspartameNM/message/1395 Aspartame Controversy, in Wikipedia democratic encyclopedia, 72 references (including AspartameNM # 864 and 1173 by Murray, brief fair summary of much more research: Murray 2007.01.01
http://groups.yahoo.com/group/aspartameNM/message/1453 Souring on fake sugar (aspartame), Jennifer Couzin, Science 2007.07.06: 4 page letter to FDA from 12 eminent USA toxicologists re two Ramazzini Foundation cancer studies 2007.06.25: Murray 2007.07.18
http://groups.yahoo.com/group/aspartameNMmessage/1451 Artificial sweeteners (aspartame, sucralose) and coloring agents will be banned from use in newly-born and baby foods, the European Parliament decided: Latvia ban in schools 2006: Murray 2007.07.12
http://groups.yahoo.com/group/aspartameNMmessage/1437 stevia to be approved and cyclamates limited by Food Standards Australia New Zealand: JMC Geuns critiques of two recent stevia studies by Nunes: Murray 2007.05.29
http://groups.yahoo.com/group/aspartameNM/message/1427 more from The Independent, UK, Martin Hickman, re ASDA (unit of Wal-Mart Stores) and Marks & Spencer ban of aspartame, MSG, artificial chemical additives and dyes to prevent ADHD in kids: urray 2007.05.16 http://news.independent.co.uk/uk/health_medical/article2548747.ece
http://groups.yahoo.com/group/aspartameNM/message/1426 ASDA (unit of Wal-Mart Stores WMT.N) and Marks & Spencer will join Tesco and also Sainsbury to ban and limit aspartame, MSG, artificial flavors dyes preservatives additives, trans fats, salt "nasties" to protect kids from ADHD: leading UK media: Murray 2007.05.15
http://groups.yahoo.com/group/aspartameNM/message/1438 Coca-Cola and Cargill Inc., after years of development, with 24 patents, will soon sell rebiana (stevia) in drinks and foods: Murray 2007.05.31
www.ncbi.nlm.nih.gov/sites/entrez?db=PubMed search PubMed ////////////////////////////////////////////////////////////
William C Biggs MD - 14 Oct 2007 08:22 GMT Rich,
Interesting study.
The problem with all epidemiologic studies is that they don't tell us squat about cause and effect.
Does a diet soft drink cause excess death, or do people with diseases that cause excess death prefer diet over regular sodas?
Either would result in the same findings.
In fact, one would expect that those who are obese (a major cause of excess mortality) would have a relative preference for diet soft drinks over those who are non-obese.
Those with diabetes, obese or not, would similarly prefer diet soft drinks, and have excess mortality related to their diabetes, not their drinks.
BTW, the same group found a 15% reduction in mortality with moderate alcohol consumption.
This is the same dilemma we were in with antidepressants and adolescents. Depressed adolescents who took SSRI antidepressants have an elevated suicide risk.
Many took that to mean the SSRIs caused suicidal behavior. When that information got out, the FDA felt compelled to issue an advisory, and many adolescents were no longer prescribed SSRIs starting in 2004.
So after a 28% drop in teen suicides from 1990 to 2003, there was then an 8% increase in one year, the sharpest one year increase in 15 years.
So was the cause the fact that most teens were no longer getting SSRI's as they would have in the 1990 - 2003 time frame? Certainly withholding SSRIs doesn't seem to be improving matters.
The moral of the story is, epidemiological surveys tell us nothing about cause and effect. And the conclusions drawn can not only be wrong, but make matters worse.
Cheers, WCB
Rich Murray - 15 Oct 2007 05:51 GMT Thanks, William C. Biggs MD, for your thoughtful, well-informed, civil comments.
That's why I attached the list of 13 mainstream studies, the majority of which explore the specific harmful biochemistry of aspartame and its three components, 50 % phenylalanine, 39 % aspartic acid, and 11 % methanol, which the body quickly turns into formaldehyde and then formic acid.
The expert review by M. Bouchard et al, 2001, states that evidence exists that about 40 % of ingested methanol, radioactively labeled, remains in the body of monkeys and other test animals for days, as unknown products.
Formaldehyde is about as undesirable as any toxin known.
Most of us have heard about the uproar about its presence in the FEMA mobile homes after Hurricane Katrina.
Physicians have higher rates of allergic reaction to formaldehyde, due to their exposure to it during medical training with cadavers. My friend, Ken Stoller, Prof. of Pediatrics at University of New Mexico, told me that he was so allergic to it that he had to sit at a distance of yards from a training autopsy, and read the text to his fellow students who carried out the procedures.
Actually, it is shocking to find out how little is actually known about formaldehyde and formic acid toxicity in humans, especially from long-term, low level chronic exposures.
Have you experience with people who have used 6-12 cans daily diet drinks for years?
In mutual service, Rich Murray
William C Biggs MD - 15 Oct 2007 07:52 GMT Rich,
> Have you experience with people who have used 6-12 cans daily diet > drinks for years? Yes, and they have not shown any signs of toxicity.
We do see headaches if they try to stop them abruptly, from caffeine withdrawal.
Were you aware that aspartame has the potential to prevent toxicity from Ocratoxin?
Human & Experimental Toxicology, Vol. 17, No. 7, 380-386 (1998) Subchronic effects of ochratoxin A on young adult rat brain and partial prevention by aspartame, a sweetener
Ochratoxin is one of the most prevalant food contaminating mycotoxins.
I thought that the aspartame/methanol issues had been put to bed long ago. It is actually quite possible to measure the serum methanol levels via exhaled methanol. I am sure you are familiar with the commercial breathalyzers that police use. Methanol is even more volatile than ethanol. The actual methodology is more advanced that police breathalyzers, but the concept is the same.
(See Lindinger, W, Hansel A, and Jordan A. On-line monitoring of volatile organic compounds at pptv levels by means of proton-transfer-reaction mass spectrometry (PTR-MS). Medical applications, food control and environmental research. Int J Mass Spectrom Ion Processes 173: 191-241, 1998.)
It is quite easy to demonstrate the production of methanol from innumerable types of foods. There is methanol production from multiple, normal, metabolic pathways in the human, as well as degradation of various foods to methanol by colonic bacteria.
I'm kind of surprised that this is still of interest to anyone. Maybe it's similar to the book, "When Prophecy Fails" by Leon Festinger.
http://tinyurl.com/29cfwb
WCB
Alan S - 15 Oct 2007 08:06 GMT >Rich, > >> Have you experience with people who have used 6-12 cans daily diet >> drinks for years? > >Yes, and they have not shown any signs of toxicity. Doc, you are aware that Rich is a fanatic about this?
Debating the subject with him is like debating Darwin's Evolution with a Genesis fundamentalist. Both sides get progressively redder in the face, but neither side will ever be persuaded to change their views.
Similar to another conversation happening at the moment:-)
Cheers, Alan, T2, Australia. d&e, metformin 1500mg, ezetrol 10mg Everything in Moderation - Except Laughter. -- http://loraldiabetes.blogspot.com latest: Cinnamon, Spices, Herbs and Similar
William C Biggs MD - 15 Oct 2007 14:39 GMT OK, thanks for the FYI.
I'll add to the killfile to reduce the noise load.
WCB
>>Rich, >> [quoted text clipped - 18 lines] > http://loraldiabetes.blogspot.com > latest: Cinnamon, Spices, Herbs and Similar William C Biggs MD - 15 Oct 2007 15:00 GMT Alan,
If anything, maybe Rich will pick up a copy of "When Prophecy Fails" and see himself there.
For those that haven't read it, despite the title, the book has nothing to do with religion or the debate between religion and atheism. It was written by a social psychologist.
Rather, it was a study in the psychology of beliefs, and the interesting observation that as the core belief is demonstrated to be more and more implausible, the true believers will intensify their belief rather than abandon it.
Rich, please read this one. It might let you move on with your life. It's on Amazon.
WCB
>>Rich, >> [quoted text clipped - 18 lines] > http://loraldiabetes.blogspot.com > latest: Cinnamon, Spices, Herbs and Similar Alan S - 16 Oct 2007 00:18 GMT >Alan, > [quoted text clipped - 14 lines] > >WCB Thanks Doc.
Possibly you could pass some copies to the ADA board?
Cheers, Alan, T2, Australia. d&e, metformin 1500mg, ezetrol 10mg Everything in Moderation - Except Laughter. -- http://loraldiabetes.blogspot.com latest: Cinnamon, Spices, Herbs and Similar
William C Biggs MD - 16 Oct 2007 03:39 GMT Well, I don't know anybody on the board, but if I come across them I'll try to offer one.
Cheers, WCB
>>Alan, >> [quoted text clipped - 27 lines] > http://loraldiabetes.blogspot.com > latest: Cinnamon, Spices, Herbs and Similar Alan S - 16 Oct 2007 04:19 GMT >Well, I don't know anybody on the board, but if I come across them I'll try >to offer one. > >Cheers, >WCB I'd nominate you and vote for you - but I'm not allowed to be a member:-)
My nominees would be something like this, in no order of preference:
William C Biggs Gretchen Becker Jenny David Mendosa Richard Bernstein
Any other nominations folks?
Cheers, Alan, T2, Australia. d&e, metformin 1500mg, ezetrol 10mg Everything in Moderation - Except Laughter. -- http://loraldiabetes.blogspot.com latest: Cinnamon, Spices, Herbs and Similar
Ozgirl - 16 Oct 2007 06:21 GMT Nicky :)
>>Well, I don't know anybody on the board, but if I come across them I'll >>try [quoted text clipped - 23 lines] > http://loraldiabetes.blogspot.com > latest: Cinnamon, Spices, Herbs and Similar Nicky - 16 Oct 2007 19:05 GMT >Nicky :) good grief! Thankyou very much! You're nuts :D
Nicky. T2 dx 05/04 + underactive thyroid D&E, 100ug thyroxine Last A1c 5.6% BMI 25
Alan S - 17 Oct 2007 02:32 GMT >>Nicky :) > >good grief! Thankyou very much! You're nuts :D Bad luck. It's seconded:-)
Cheers, Alan, T2, Australia. d&e, metformin 1500mg, ezetrol 10mg Everything in Moderation - Except Laughter. -- http://loraldiabetes.blogspot.com latest: Cinnamon, Spices, Herbs and Similar
Rich Murray - 16 Oct 2007 07:24 GMT Hello William C Biggs, MD,
Yes, while studying for my MA in psychology, Boston University Graduate School, 1967, I much enjoyed "When Prophecy Fails".
I myself hardly expected, however, to ever be viewed as a fanatic or true believer about anything.
http://www.whenprophecyfails.org/
When Prophecy Fails -- A social and psychological study of a modern group that predicted the destruction of the world. is a book Written by Leon Festinger, Henry Riecken, and Stanley Schachter. Copyright 1956 by the University of Minnesota, published by Harper Torchbooks, Harper and Row. It is out of print but you can get it for a reasonable price on Amazon.
I suggest that while of course an unqualified medical layman such as myself might well reasonably be initially suspected to be a fanatic, it is hardly prudent to view all the qualified mainstream researchers who are currently publishing studies on aspartame toxicity in the same light.
http://groups.yahoo.com/group/aspartameNM/message/1464 13 mainstream research studies in 24 months showing aspartame toxicity, also 3 relevant studies on methanol and formaldehyde: Murray 2007.08.17
I am also very impressed by the Lindinger results that show enormous levels of methanol intake from fruits, due to the degradation of pectins by bacteria in the GI tract. Yet I find no reports of people having hangover symptoms from these blood levels, which surely are comparable to those studied by some reputable teams as the major cause of alcohol hangover symptoms. So we have have an experimental paradox which certainly both invites and deserves thorough curiousity driven research:
http://groups.yahoo.com/group/aspartameNM/message/1394 Addict Biol. 2005 Dec;10(4): 351-5. Concentration changes of methanol in blood samples during an experimentally induced alcohol hangover state. Woo YS, Yoon SJ, Lee HK, Lee CU, Chae JH, Lee CT, Kim DJ. Chuncheon National Hospital, Department of Psychiatry, The Catholic University of Korea, Seoul, Korea. http://www.cuk.ac.kr/eng/ sysop@catholic.ac.kr Songsin Campus: 02-740-9714 Songsim Campus: 02-2164-4116 Songeui Campus: 02-2164-4114 http://www.cuk.ac.kr/eng/sub055.htm eight hospitals
http://groups.yahoo.com/group/aspartameNM/message/1469 highly toxic formaldehyde, the cause of alcohol hangovers, is made by the body from 100 mg doses of methanol from dark wines and liquors, dimethyl dicarbonate, and aspartame: Murray 2007.08.31
http://groups.yahoo.com/group/aspartameNM/message/1052 DMDC: Dimethyl dicarbonate 200mg/L in drinks adds methanol 98 mg/L ( becomes formaldehyde in body ): EU Scientific Committee on Foods 2001.07.12: Murray 2004.01.22
http://europa.eu.int/comm/food/fs/sc/scf/out96_en.pdf
"...DMDC was evaluated by the SCF in 1990 and considered acceptable for the cold sterilization of soft drinks and fruit juices at levels of addition up to 250 mg/L (1) ...DMDC decomposes primarily to CO2 and methanol ...
[ Note: Sterilization of bacteria and fungi is a toxic process, probably due to the inevitable conversion in the body of methanol into highly toxic formaldehyde and then formic acid. ]
The use of 200 mg DMDC/L would add 98 mg/L of methanol to wine which already contains an average of about 140 mg/L from natural sources.
A healthy person metabolises 1500 mg methanol/hr without any physiological problems and this should be compared to the amount of up to 240 mg/L methanol in wine, treated with DMDC up to 200 mg/L.
Metabolism of the amounts of methanol resulting from consumption of wine containing such levels is therefore well within the capacity of the human body. Thus consumption of even large quantities of wine would not pose any hazards from methanol.
Conclusion
The formation of methanol and other reaction products following the use of DMDC for the treatment of alcoholic beverages and wine is similar to that formed in non-alcoholic beverages. Therefore the previous opinion on the use of DMDC for non-alcoholic beverages (1) is equally applicable to wines treated with DMDC."
However, research shows that the methanol in dark wines and liquors is made into formaldehyde by the body, causing the toxic symptoms of hangovers.
http://groups.yahoo.com/group/aspartameNM/message/1286 methanol products (formaldehyde and formic acid) are main cause of alcohol hangover symptoms [same as from similar amounts of methanol, the 11% part of aspartame]: YS Woo et al, 2005 Dec: Murray 2006.01.20
Addict Biol. 2005 Dec;10(4): 351-5. Concentration changes of methanol in blood samples during an experimentally induced alcohol hangover state. Woo YS, Yoon SJ, Lee HK, Lee CU, Chae JH, Lee CT, Kim DJ. Chuncheon National Hospital, Department of Psychiatry, The Catholic University of Korea, Seoul, Korea. http://www.cuk.ac.kr/eng/ sysop@catholic.ac.kr Songsin Campus: 02-740-9714 Songsim Campus: 02-2164-4116 Songeui Campus: 02-2164-4114 http://www.cuk.ac.kr/eng/sub055.htm eight hospitals
[ Han-Kyu Lee ]
A hangover is characterized by the unpleasant physical and mental symptoms that occur between 8 and 16 hours after drinking alcohol.
After inducing experimental hangover in normal individuals, we measured the methanol concentration prior to and after alcohol consumption and we assessed the association between the hangover condition and the blood methanol level.
A total of 18 normal adult males participated in this study.
They did not have any previous histories of psychiatric or medical disorders.
The blood ethanol concentration prior to the alcohol intake (2.26+/-2.08) was not significantly different from that 13 hours after the alcohol consumption (3.12+/-2.38).
However, the difference of methanol concentration between the day of experiment (prior to the alcohol intake) and the next day (13 hours after the alcohol intake) was significant (2.62+/-1.33/l vs. 3.88+/-2.10/l, respectively).
A significant positive correlation was observed between the changes of blood methanol concentration and hangover subjective scale score increment when covarying for the changes of blood ethanol level (r=0.498, p<0.05).
This result suggests the possible correlation of methanol as well as its toxic metabolite to hangover. PMID: 16318957
[ The toxic metabolite of methanol is formaldehyde, which in turn partially becomes formic acid -- both potent cumulative toxins that are the actual cause of the toxicity of methanol.]
http://groups.yahoo.com/group/aspartameNM/message/1143 methanol (formaldehyde, formic acid) disposition: Bouchard M et al, full plain text, 2001: substantial sources are degradation of fruit pectins, liquors, aspartame, smoke: Murray 2005.04.02
Fully 11 % of aspartame is methanol -- 1,120 mg aspartame in 2 L diet soda, almost six 12-oz cans, gives 123 mg methanol (wood alcohol). The methanol is immediately released into the body after drinking . Within hours, the liver turns much of the methanol into formaldehyde, and then much of that into formic acid, both of which in time are partially eliminated as carbon dioxide and water.
However, about 30 % of the methanol remains in the body as cumulative durable toxic metabolites of formaldehyde and formic acid -- 37 mg daily, a gram every month, accumulating in and affecting every tissue.
If only 10 % of the methanol is retained daily as formaldehyde, that would give 12 mg daily formaldehyde accumulation -- about 60 times more than the 0.2 mg from 10 % retention of the 2 mg EPA daily limit for formaldehyde in drinking water.
Bear in mind that the EPA limit for formaldehyde in drinking water is 1 ppm, or 2 mg daily for a typical daily consumption of 2 L of water.
http://groups.yahoo.com/group/aspartameNM/message/835 ATSDR: EPA limit 1 ppm formaldehyde in drinking water July 1999: Murray 2002.05.30
This long-term low-level chronic toxic exposure leads to typical patterns of increasingly severe complex symptoms, starting with headache, fatigue, joint pain, irritability, memory loss, rashes, and leading to vision and eye problems, and even seizures. In many cases there is addiction. Probably there are immune system disorders, with a hypersensitivity to these toxins and other chemicals.
http://groups.yahoo.com/group/aspartameNM/message/1464 13 mainstream research studies in 24 months showing aspartame toxicity, also 3 relevant studies on methanol and formaldehyde: Murray 2007.08.17
http://groups.yahoo.com/group/aspartameNM/message/1468 Formaldehyde induced urticarial vasculitis in male medical student, age 40, Michael Pellizzari, Gillian Marshman, Flinders U., Australasian J. Dermatol. 2007 Aug: Murray 2007.08.29
http://groups.yahoo.com/group/aspartameNM/message/1453 Souring on fake sugar (aspartame), Jennifer Couzin, Science 2007.07.06: 4 page letter to FDA from 12 eminent USA toxicologists re two Ramazzini Foundation cancer studies 2007.06.25: Murray 2007.07.18
http://groups.yahoo.com/group/aspartameNM/message/1457 aspartame bans, tis more an avalanche than a trend...: Rich Murray 2007.08.17
So far, USA print and broadcast media are deaf, blind, and dumb, regarding recent major bans of aspartame and MSG in the UK and EU.
The EU Parliament voted July 12 to ban artificial sweeteners in newly born and infant foods.
On May 15 four huge UK supermarket chains announced bans of aspartame and MSG, food dyes, and many additives to protect kids from ADHD -- Sainsbury, Tesco, Marks & Spencer, and ASDA, a unit of WalMart.
May 31: Coca-Cola and the much larger Cargill Inc., after years of secret development, with 24 patents, will soon sell rebiana (stevia) in drinks and food in the many nations where it is approved as a sweetener -- for decades a major sweetener in Japan, China, Korea, Taiwan, Thailand, Malasia, Saint Kitts, Nevis, Brazil, Peru, Paraguay, Uruguay, and Israel, and an approved supplement in USA, Australia, and Canada, according to Wikipedia.
http://groups.yahoo.com/group/aspartameNM/message/1454 recent research and news re aspartame and stevia: Murray 2007.08.16
"Of course, everyone chooses, as a natural priority, to actively find, quickly share, and positively act upon the facts about healthy and safe food, drink, and environment."
Rich Murray, MA Room For All rmforall@comcast.net 505-501-2298 1943 Otowi Road, Santa Fe, New Mexico 87505
http://groups.yahoo.com/group/aspartameNM/messages group with 82 members, 1,469 posts in a public, searchable archive http://RMForAll.blogspot.com
http://groups.yahoo.com/group/aspartameNM/message/1395 Aspartame Controversy, in Wikipedia democratic encyclopedia, 72 references (including AspartameNM # 864 and 1173 by Murray, brief fair summary of much more research: Murray 2007.01.01
http://groups.yahoo.com/group/aspartameNMmessage/1451 Artificial sweeteners (aspartame, sucralose) and coloring agents will be banned from use in newly-born and baby foods, the European Parliament decided: Latvia ban in schools 2006: Murray 2007.07.12
http://groups.yahoo.com/group/aspartameNMmessage/1437 stevia to be approved and cyclamates limited by Food Standards Australia New Zealand: JMC Geuns critiques of two recent stevia studies by Nunes: Murray 2007.05.29
http://groups.yahoo.com/group/aspartameNM/message/1427 more from The Independent, UK, Martin Hickman, re ASDA (unit of Wal-Mart Stores) and Marks & Spencer ban of aspartame, MSG, artificial chemical additives and dyes to prevent ADHD in kids: urray 2007.05.16 http://news.independent.co.uk/uk/health_medical/article2548747.ece
http://groups.yahoo.com/group/aspartameNM/message/1426 ASDA (unit of Wal-Mart Stores WMT.N) and Marks & Spencer will join Tesco and also Sainsbury to ban and limit aspartame, MSG, artificial flavors dyes preservatives additives, trans fats, salt "nasties" to protect kids from ADHD: leading UK media: Murray 2007.05.15
http://groups.yahoo.com/group/aspartameNM/message/1438 Coca-Cola and Cargill Inc., after years of development, with 24 patents, will soon sell rebiana (stevia) in drinks and foods: Murray 2007.05.31
www.ncbi.nlm.nih.gov/sites/entrez search PubMed ////////////////////////////////////////////////////////////
I respectfully quoted abstracts about several of the papers about aspartame as a preventive agent of ochratoxin A toxicity, and also have suggested that humans may have evolved to seek out and imbide alcohol, methanol, and even formaldehyde because they all may be more harmful to pathogens than to human cells:
http://groups.yahoo.com/group/aspartameNM/message/1143 antiseptic? antifungal? antiviral? methanol (formaldehyde, formic acid) disposition: Bouchard M et al, full plain text, 2001: substantial sources are degradation of fruit pectins, liquors, aspartame, smoke: Murray 2005.01.05
http://groups.yahoo.com/group/aspartameNM/message/277 aspartame research debate: Lowry: Murray 2000.07.23
Sunday, July 23 2000 Hello Mark and Matt Lowry,
I am very willing to engage in a prolonged, systematic public debate on aspartame toxicity research. I will continue to share all posts, unedited, with my discussion group aspartameNM@egroups.com , another open discussion group, virtually unused so far except by me, at www.bevnet.com/bevboard/cgi-bin/Ultimate.cgi?action=intro "The Dangers of Aspartame", and five news groups: bionet.toxicology, bionet.neuroscience, sci.med.nutrition, sci.bio.misc, and alt.discuss.health.toxicity , which all maintain permanent, searchable archives, accessible by www.deja.com/usenet/ , as well as submit to Lancet Interactive discussion group: Aspartame toxicity- fact or fiction? at www.TheLancet.com , and to varying dozens of others on my private list.
Thus, others will hopefully join in, since the three of us are either laymen or not specifically qualified to evaluate adequately many relevant research studies. The overall results are certainly going to be of value, and will set a precedent for responsible public debate on the Net about many other vital issues. I suggest we all relinquish all copyright claims, releasing our posts to be freely used, resent, and otherwise published, as long as we are always included as the original authors.
It is convenient to limit each post to 30K, about 10 pages printed, because that is often a limit for lifting and copying in a single operation.
To commence, I am grateful for the feedback that the term, used by me, "pro-aspartame", would often be misconstrued to imply that someone is strongly committed to aspartame, for my intention was to indicate a general dichotomy: those who criticize aspartame vs those who defend it. For two decades and longer, these have generally been two very divided camps. Other toxicity issues for which this same striking polarization exists are: MSG, mercury dental amalgam, fluoride, and, actually, many others. More and more, the lay and professional public can immediately access well-organized, large, detailed websites for both sides of many controversial toxins. This is a very good development for world society. What is needed is to develop traditions and precedents for responsible public dialogues among polarized positions, that facilitate consensus building at the grassroots level, faster than the slow, cumbersome, sporadic, biased, venues of bureaucracy, business, medicine, education, media, and law.
It is not necessary to come to definitive proof that aspartame causes headache, whether as a "toxin" or an "allergen" in many users, or any other disease. It is enough to make the case that aspartame is likely a causal factor in as many as 1% of users, for that would be over a million in the USA alone, who surely would deserve to be informed that they might consider the entirely safe and reasonable step of giving up all aspartame use for a few months.
It is possible to quickly come to experimental certitude, or not, that moderate use of aspartame in humans leads to cumulative adducts of formaldehyde, bound to DNA and proteins in brain, liver, kidneys, retina, and other tissues, as Trocho reported for rats. This proof would in practice compel the recall of aspartame, as the toxicity of formaldehyde is surely indubitable, and entirely consistent with the very wide range of symtoms reported by thousands of case reports. One very useful result of our debate would be to make many ambitious and competent researchers aware that this scientific and medical plum is ripe for the plucking. Contrariwise, the aspartame industry can improve their case greatly within a few months.
Thank you for the references on recent research, a few of which I have already investigated and posted publicly about. I will take up each reference, one at a time, in this debate. Note that Thomas R. Tephly, whose research often is funded by the aspartame industry, has published a letter, not a peer-reviewed paper, criticizing the Trocho claims, and I have read it, but, as a layman, am not convinced. The Trocho paper is on the Net, available for review by everyone. Why don't we make critiquing it our first priority? Does anyone know whether a replication with humans is being attempted?
Life Sci June 26 1998; 63(5): 337-49 From PubMed Formaldehyde derived from dietary aspartame binds to tissue components in vivo. Trocho C, Pardo R, Rafecas I, Virgili J, Remesar X, Fernandez-Lopez JA, Alemany M, Departament de Bioquimica i Biologia Molecular, Facultat de Biologia, Universitat de Barcelona, Spain.
Sra. Carme Trocho, Sra. Rosario Pardo, Dra. Immaculada Rafecas, Sr. Jordi Virgili, X. Remesar, Dr. Jose Antonio Fernandez-Lopez, Dr. Marià Alemany Fac. Biologia Tel.: (93)4021521, FAX: (93)4021559 alemany@porthos.bio.ub.es bioq@sun.bq.ub.es rafecas@porthos.bio.ub.es remesar@porthos.bio.ub.es
This report is available in full at: http://www.PRESIDIOTEX.COM/barcelona/index.html
Abstract: Adult male rats were given an oral dose of 10 mg/kg aspartame, 14C-labelled in the methanol carbon. At timed intervals of up to 6 hours, the radioactivity in plasma and several organs was investigated. Most of the radioactivity found (>98% in plasma, >75% in liver) was bound to protein. Label present in liver, plasma and kidney was in the range of 1-2% of total radioactivity administered per g or mL, changing little with time. Other organs (brown and white adipose tissues, muscle, brain, cornea and retina) contained levels of label in the range of 1/12th to 1/10th of that of liver. In all, the rat retained, 6 hours after administration, about 5% of the label, half of it in the liver. The specific radioactivity of tissue protein, RNA and DNA was quite uniform. The protein label was concentrated in amino acids, different from methionine, and largely coincident with the result of protein exposure to labelled formaldehyde. DNA radioactivity was essentially in a single different adduct base, different from the normal bases present in DNA. The nature of the tissue label accumulated was, thus, a direct consequence of formaldehyde binding to tissue structures. The administration of labelled aspartame to a group of cirrhotic rats resulted in comparable label retention by tissue components, which suggests that liver function(or its defect) has little effect on formaldehyde formation from aspartame and binding to biological components. The chronic treatment of a series of rats with 200 mg/kg of non-labelled aspartame during 10 days results in the accumulation of even more label when given the radioactive bolus, suggesting that the amount of formaldehyde adducts coming from aspartame in tissue proteins and nucleic acids may be cumulative. It is concluded that aspartame consumption may constitute a hazard because of its contribution to the formation of formaldehyde adducts. PMID: 9714421, UI: 98378223
Life Sci 1999;65(13):PL157-60 Comments on the purported generation of formaldehyde and adduct formation from the sweetener aspartame. Tephly TR Thomas R. Tephly 319-335-7979 Department of Pharmacology, The University of Iowa, Iowa City 52242, USA.
A recent paper by Trocho et al. (1) describes experiments meant to show that formaldehyde adducts are formed when rats are administered the sweetener aspartame. These authors assume that the methanol carbon of aspartame generates formaldehyde which then forms adducts with protein, DNA, and RNA. Doses employed range widely. In this letter, studies which have been published previously and which were not cited by these authors are reviewed in order to put into perspective the disposition of methanol and formaldehyde in monkeys and humans, species relevant to the toxicity of methanol and its toxic metabolite, formic acid. PMID: 10503962, UI: 99431287
Karikas GA, Schulpis KH, Reclos GJ, Kokotos G. Dept. of Chemistry, University of Athens, Greece www.chem.uoa.gr gkokotos@atlas.uoa.gr Measurement of molecular interaction of aspartame and its metabolites with DNA. Clin Biochem. 1998 Jul;31(5):405-7. ***************************************************************
Subject: Re: Murray: Lowry: Lancet Interactive: aspartame toxicity studies 7.22.00 Date: Sun, 23 Jul 2000 12:48:11 -0400 From: "Mark Lowry" <mlowry@glol.net> To: Rich Murray <rmforall@earthlink.net>
Mr. Murray, You state, "If there is scientific, adequate, and unbiased experimental proof of the safety of aspartame, then I want to know about it immediately in full detail. "
You can't prove a negative, such as "Aspartame isn't dangerous." I am merely looking for proof of a positive: "Aspartame is dangerous." There are anecdotes, there are (flawed) retrospective studies...I haven't seen any proof of aspartame's danger or implication, in a causal way, to any human disease.
I am not "pro-aspartame". It is more accurate to say that I am pro-truth or pro-fact. That's all.
I guess we're all awaiting the results of the King's College trials.
Mark Lowry *****************************************************
Subject: Aspartame Research Date: Sun, 23 Jul 2000 17:20:46 CDT From: "Matt Lowry" <mrphyz@hotmail.com> To: rmforall@earthlink.net CC: mlowry@glol.net, al_raetz@yahoo.com
Howdy Rich,
>I must admit that in a year and a half, I have not found a single >pro-aspartame person, professional or lay, who is willing to [quoted text clipped - 3 lines] >shared their published papers with me and given me aid, >support, guidance, and encouragement in my efforts. Why is it that you refer to people who are skeptical of the claims of "aspartame poisoning" as "pro-aspartamers"? My brother, myself, and Alan Raetz are not pro-aspartame, we are merely skeptical of the claims made that aspartame is responsible for the long list of diseases and maladies (a list which seems to grow almost daily) espoused by many high-profile anti-aspartame advocates. We are further very skeptical of their claims to some collusion between Monsanto and the Federal Government. Just because we are skeptical doesn't mean we are pro-aspartame; I honestly couldn't care less whether or not people used the stuff. This blatant labeling of those skeptical of your position smacks of a "If you're not with us you're against us" black-and-white mentality. I am not interested in getting overly involved with individuals or groups who make such assertions.
If the group of professionals that you mention are able to, via valid peer-reviewed science, convince more and more skeptical members of the scientific and medical communities of the validity of your claims, more power to you. However, until I start seeing more consistent evidence that aspartame does what many of you claim it does, I have no real reason to change my views.
>If there is scientific, adequate, and unbiased experimental >proof of the safety of aspartame, then I want to know about [quoted text clipped - 5 lines] >public archive, fully searchable by any word: >www.egroups.com . I do believe that I provided you with a great many articles and abstracts from PubMed-Medline that did indeed attest to the safety of aspartame. Did you lose or misplace these articles, or were they conveniently ignored or written off as "industry funded"? Funny thing is that everytime I provide peer-reviewed research on this issue to most anti-aspartamers, they write it off as industry funded without providing any evidence to support that claim. As an act of good faith, I'll provide these citations again in a follow-up email.
When I examine the medical studies critical of aspartame, I don't call them invalid unless there is a reason to do so, like follow-up research that doesn't yield consistent results or a specific study pointing out methodological errors in the original research. I do not (unlike many anti-aspartame advocates) make it a policy to blatantly dismiss any study or research out of hand.
>I have a question: can anyone send me a copy or an >abstract or a summary of this paper, published >the same month as the Trocho study? Well, there were apparently flaws in the Trocho study, which is pointed out by the following reference, a reference which I have already provided to you. Is this reference yet another "industry funded" bunch of propoganda?
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db= PubMed&list_uids=10503962&dopt=Abstract
Until you and your group can produce and reproduce consistent, valid, peer-reviewed studies that support the claims that aspartame causes cancer, multiple sclerosis, lupus, etc. those who are skeptical of your claims (like me, my brother, and Alan Raetz) will remain skeptical. If, however, your research (and the research of other independent scientists) produces consistently verifiable and reproducible results that conclusively show a cause-and-effect link between aspartame usage and the aforementioned maladies, then we and many others in the scientific and medical communities will change our minds... but you have to convince us first.
Cheers -- Matt Lowry **********************************************************
Subject: Follow up -- The research again Date: Sun, 23 Jul 2000 17:28:05 CDT From: "Matt Lowry" <mrphyz@hotmail.com> To: rmforall@earthlink.net CC: mlowry@glol.net, al_raetz@yahoo.com
Straight from PubMed-Medline (http://www.ncbi.nlm.nih.gov/PubMed/ -- search under "aspartame"): =========================================
Food Chem Toxicol 2000 Apr 1;38(4):335-338 Lack of DNA-damaging activity of five non-nutritive sweeteners in the rat hepatocyte/DNA repair assay. Jeffrey AM, Williams GM New York Medical College, Department of Pathology, Basic Sciences Building, Valhalla, NY 10595, USA
The non-nutritive sweeteners acesulfame-K, aspartame, cyclamate, saccharin and sucralose were tested for DNA damaging activity in the rat hepatocyte/DNA repair assay. Using hepatocytes from F344 and Sprague-Dawley male rats, all were inactive despite strong responses for the positive control, 2-aminofluorene. PMID: 10722887 =========================================
Food Chem Toxicol 2000 Jan;38(1):75-7 In vivo cytogenetic studies on blends of aspartame and acesulfame-K. Mukhopadhyay M, Mukherjee A, Chakrabarti J Centre for Advanced Studies on Cell and Chromosome Research, Department of Botany, University of Calcutta, 35 Ballygunge Circular Road, Calcutta 700019, India.
Aspartame and acesulfame-K, non-nutritive sweeteners, are permitted individually in diets and beverages. These sweeteners of different classes, used in combination, have been found to possess a synergistic sweetening effect. Whether they also have a synergistic genotoxic effect is unknown. Swiss Albino male mice were exposed to blends of aspartame (3.5, 35, 350 mg/kg body weight) and acesulfame-K (1.5, 15 and 150 mg/kg body weight) by gavage. Bone marrow cells isolated from femora were analysed for chromosome aberrations. Statistical analysis of the results show that aspartame in combination with acesulfame-K is not significantly genotoxic. PMID: 10685017, UI: 20150029 =========================================
Alcohol 2000 Jan;20(1):69-74 Related Articles, Books, LinkOut Anxiety in mice following acute aspartame and ethanol exposure. LaBuda CJ, Hale RL Department of Psychology, Shippensburg University of Pennsylvania, 17257, USA. labuda@imaginemail.com
The purpose of the present study was to look at the effect of aspartame on the anxiolytic actions of ethanol. Previous research has shown that ethanol reliably produces an anxiolytic effect on rodent's plus-maze performance. There have been anecdotal reports that aspartame increases anxiety. CD-1 male mice were given i.p. aspartame doses of vehicle, 1000, or 2000 mg/kg, followed 30 min later by i.p. ethanol doses of 1.6 g/kg or vehicle. Animals were then placed in an open field, then tested in the plus-maze. Results determined that the aspartame condition had no significant effect on anxiety-related behavior, nor did it alter the anxiolytic actions of ethanol. Thus, acute high dose exposure to aspartame does not appear to affect anxiety-related behaviors. PMID: 10680719, UI: 20142912 =========================================
Eksp Klin Farmakol 1999 Jul-Aug;62(4):48-50 [The antimutagenic activity of aspartame]. [Article in Russian] Kulakova AV, Belogolovskaia EG, Oreshchenko AV, Durnev AD, Seredenin SB Institute of Pharmacology, Russian Academy of Medical Sciences, Moscow, Russia. The method of chromosome aberration count in the bone marrow cells of C57B1/6 mice was used to study the influence of aspartame on the cytogenetic effects of dioxydin and cyclophosphan. Aspartame (0.4-40 mg/kg) was found to possess antimutagenic properties in relation to the listed mutagens. The discovered antimutagenic activity of aspartame was manifested more when it was injected for 5 days before the administration of a mutagen, whereas in joint administration of aspartame with the mutagens, the substitute for sugar did not change the clastogenic effect of dioxydin and cyclophosphan. PMID: 10513337, UI: 99442828 =========================================
Life Sci 1999;65(13):PL157-60 Comments on the purported generation of formaldehyde and adduct formation from the sweetener aspartame. Tephly TR Department of Pharmacology, The University of Iowa, Iowa City 52242, USA.
A recent paper by Trocho et al. (1) describes experiments meant to show that formaldehyde adducts are formed when rats are administered the sweetener aspartame. These authors assume that the methanol carbon of aspartame generates formaldehyde which then forms adducts with protein, DNA, and RNA. Doses employed range widely. In this letter, studies which have been published previously and which were not cited by these authors are reviewed in order to put into perspective the disposition of methanol and formaldehyde in monkeys and humans, species relevant to the toxicity of methanol and its toxic metabolite, formic acid. PMID: 10503962, UI: 99431287 =========================================
J Mol Recognit 1999 Sep-Oct;12(5):249-57 Corrected and republished with original paging, article originally printed in J Mol Recognit 1999 Jul-Aug;12(4):249-57 Interference of rheumatoid factor activity by aspartame, a dipeptide methyl ester. Ramsland PA, Movafagh BF, Reichlin M, Edmundson AB Crystallography Program, Oklahoma Medical Research Foundation, Oklahoma City 73104, USA.
Circulating autoimmune complexes of IgM rheumatoid factors (RF) bound to the Fc portions of normal, polyclonal IgG antibodies are frequently present in humans with rheumatoid arthritis (RA). The sweet tasting methyl ester of L-Asp-L-Phe (aspartame or APM) was found to relieve pain and improve joint mobility in subjects with osteo- and mixed osteo/rheumatoid arthritis [Edmundson, A. B. and Manion, C. V. (1998). Clin. Pharmac. Ther. 63, 580-593]. These clinical observations prompted the testing of the inhibition by APM of the binding interactions of human IgM RFs with IgG Fc regions. The propensity of APM to inhibit IgM RF binding was assessed by competitive enzyme immunoassays with solid-phase human IgG. Ten RA serum samples and three purified monoclonal cryoglobulins, all of which had RF activity, were tested in this system. We found that the presence of APM significantly reduced the binding of IgM RFs. The inhibitory propensity of APM with monoclonal RF cryoglobulins was increased by the addition of CaCl(2) to the binding buffer. Similar inhibition of the binding of RA derived RFs to IgG was observed for Asp-Phe and its amidated derivative, indicating that the methyl ester is not required for APM's interaction with IgM antibodies. A human (Mez) IgM known to bind octameric peptides derived from the Fc portion of a human IgG(1) antibody was tested for binding of dipeptides by the Pepscan method of combinatorial chemistry. The relative binding constants of Asp-Phe and Phe-Asp were ranked among the highest values for 400 possible combinations of the 20 most common amino acids. Possible blocking interactions of APM were explored by computer-assisted docking studies with the model of a complex of an RF Fab with the Fc of a human IgG(4) antibody. Modeling of ternary immune complexes revealed a few key residues, which could act as molecular recognition sites for APM. A structural hypothesis is presented to explain the observed interference with RF reactivity by APM. Extrapolations of the current results suggest that APM may inhibit the binding of IgG in a substantial proportion of IgM RFs. Interference of RF reactivity, especially in RA patients, may alleviate the pain and immobility resulting from chronic inflammation of the joints. Copyright 1999 John Wiley & Sons, Ltd. Publication Types: · Corrected and republished article PMID: 10777254, UI: 20228737 =========================================
Am J Clin Nutr 1998 Sep;68(3):531-7 Aspartame: neuropsychologic and neurophysiologic evaluation of acute and chronic effects. Spiers PA, Sabounjian L, Reiner A, Myers DK, Wurtman J, Schomer DL Clinical Research Center, Massachusetts Institute of Technology, Cambridge 02139, USA. BACKGROUND: Neurobehavioral symptoms have been reported anecdotally with aspartame. OBJECTIVE: This study sought to determine whether aspartame can disrupt cognitive, neurophysiologic, or behavioral functioning in normal individuals. DESIGN: Forty-eight healthy volunteers completed a randomized, double-blind, placebo-controlled, crossover study. The first month was aspartame free. Subjects then consumed sodas and capsules with placebo, aspartame, or sucrose for 20 d each. Order was randomized and subjects were assigned to either a high- (45 mg x kg body wt(-1) x d(-1)) or low- (15 mg x kg body wt(-1) x d(-1)) dose aspartame group Neuropsychologic and laboratory testing was done on day 10 of each treatment period to determine possible acute effects and on day 20 for possible chronic effects. RESULTS: Plasma phenylalanine concentrations increased significantly during aspartame treatment. Neuropsychologic results; adverse experiences; amino acid, insulin, and glucose values; and electroencephalograms were compared by sex and by treatment. No significant differences were found for any dependent measure. CONCLUSION: Large daily doses of aspartame had no effect on neuropsychologic, neurophysiologic, or behavioral functioning in healthy young adults. Publication Types: Clinical trial Randomized controlled trial PMID: 9734727, UI: 98403796 =========================================
J Toxicol Sci 1998 Jul;23 Suppl 2:165-72 How aspartame prevents the toxicity of ochratoxin A. Creppy EE, Baudrimont I, Anne-Marie Toxicology Department, University of Bordeaux, France.
The ubiquitous mycotoxin ochratoxin A (OTA) is found as a frequent contaminant of a large variety of food and feed and beverage such as beer, coffee and win. It is produced as a secondary metabolite of moulds from Aspergillus and Penicillium genera. Ochratoxin A has been shown experimentally to inhibit protein synthesis by competition with phenylalanine its structural analogue and also to enhance oxygen reactive radicals production. The combination of these basic mechanisms with the unusual long plasma half-life time (35 days in non-human primates and in humans), the metabolisation of OTA into still active derivatives and glutathione conjugate both potentially reactive with cellular macromolecules including DNA could explain the multiple toxic effects, cytotoxicity, teratogenicity, genotoxicity, mutagenicity and carcinogenicity. A relation was first recognised between exposure to OTA in the Balkan geographical area and Balkan Endemic Nephropathy (BEN) with a high incidence (nearly 50 times higher than normal) of urinary tract tumours. Exposure rates of OTA are measurable in blood of humans and animals and are established in several countries including Scandinavia, Germany, France, Italy, Canada, Japan and Northern Africa mainly Tunisia and Egypt. The impact of OTA exposure in non-endemic areas in the world is not known, the rates of exposure being not correlated with the disease records, especially in developed countries, due to lake of well-designed epidemiological studies, genetic polymorphism and maybe to dietary contents of radical scavengers and antioxidants. However the incidence and mortality rates of renal cancer are increasing in European countries and Northern Africa which could be a global resultant of human exposure to natural compounds in food such as mycotoxins and especially ochratoxin A. In addition to special care to prevent the growth of moulds and detoxification measures there was a need for the prevention of the OTA-induced toxic effects once the toxin is ingested. For this purpose several compound have been studied including some therapeutic agents such as piroxicam which cannot be proposed for a large scale use in humans for preventive purpose. Among other compounds, Aspartame, already used as sweetener has shown a real effectiveness in vivo confirmed largely in vitro. When rats exposed to OTA (289 micrograms/kg) by oral route every two days are given 25 mg/kg similarly for several weeks, all the toxic effects including genotoxicity are very efficiently prevented as shown for example by the disappearance of DNA-adducts in tissues excised from treated animals. Aspartame is also effective in washing out the toxin when given afterwards to animals intoxicated by the same oTA doses for several weeks. In vitro, provided that it is added in cell culture medium before OTA it prevent significantly the inhibition of protein synthesis and lipid peroxidation induced by the toxin. Obviously the molecular mechanism mediating the preventive effect of Aspartame is the delivery of phenylalanine by cleavage of the peptide but also the direct effect of the peptide on the bending capacity and transport of the toxin in vivo and in vitro. As a matter of fact when Aspartame is given to animals or added in culture medium the amount of peptide found unchanged (10-15%) may account for a preventive effect as entire peptide. PMID: 9760456, UI: 98433165 =========================================
Curr Opin Pediatr 1995 Aug;7(4):381-6 Attention-deficit hyperactivity disorder in children. Baxter PS Department of Paediatrics, Northern General Hospital, Sheffield, UK.
Attention-deficit hyperactivity disorder has been redefined in the classifications in the International Classification of Disease, 10th revision and Diagnostic and Statistical Manual of Mental Disorders, fourth edition. The definitions are more concordant than their predecessors and reemphasize the distinction between inattentiveness and hyperactivity. The causes and mechanisms are still uncertain, but dietary sugar or aspartame and thyroid dysfunction do not seem to be major factors. Specific subgroups, such as children with comorbid psychologic disorders, tic disorders, or mental handicap, seem to have different origins, natural history, prognoses, and responses to treatment, reflecting the heterogeneous nature of the disorder. Psychostimulant therapy has unquestioned short-term effects on behavior but less certain benefits on long-term psychosocial outcome or on academic performance. Publication Types: Review Review, tutorial PMID: 7581640, UI: 96034181 =========================================
Am J Gastroenterol 1993 May;88(5):737-43 Biochemical and clinical effects of aspartame in patients with chronic, stable alcoholic liver disease. Hertelendy ZI, Mendenhall CL, Rouster SD, Marshall L, Weesner R Division of Hepatic Research, Department of Veterans Affairs Medical Center, Cincinnati, Ohio.
Aspartame is an artificial sweetener completely metabolized in the gut and absorbed as aspartate, phenylalanine, and methanol. Phenylalanine is thought to mediate or exacerbate hepatic encephalopathy, and an impaired liver may not be able to cope with the ammoniagenic properties of the amino acid constituents, or adequately metabolize methanol. Thus, we compared the clinical and biochemical effects of a single ingestion of aspartame (15 mg/kg) to skim milk (phenylalanine content equimolar to aspartame) and placebo in patients with chronic, alcoholic liver disease in a randomized, crossover study. Aspartame produced an elevation of plasma phenylalanine significantly greater than milk and placebo (Cmax 14.55 +/- 7.38, 10.95 +/- 4.95, 8.84 +/- 4.55 mumol/dl, respectively; p < 0.01). However, quantified encephalopathic changes were observed only with milk (p < 0.05). Plasma aspartate, methanol, formate, and ammonia levels remained unchanged after all treatments. The lack of clinical derangements in encephalopathic indices, methanol accumulation, or biochemical changes in liver status suggests that a single large dose of aspartame (representing 5 times the average daily intake of adults) may be used safely by patients with chronic, stable liver disease. Publication Types: Clinical trial Randomized controlled trial PMID: 8480740, UI: 93243368 =========================================
Neurology 1993 Mar;43(3 Pt 1):611-3 Aspartame use in Parkinson's disease. Karstaedt PJ, Pincus JH Department of Neurology, Georgetown University Hospital, Washington, DC 20007.
The artificial sweetener aspartame (NutraSweet) is hydrolyzed in the gut as phenylalanine (PA), a large neutral amino acid (LNAA). LNAAs compete with levodopa for uptake into the brain. To determine the effect of aspartame on levodopa-treated Parkinson's disease (PD) patients, we studied 18 PD patients with protein-sensitive motor fluctuations by administering in a double-blind and single-crossover design, on alternate days, aspartame (600 or 1,200 mg) and placebo. Every hour, we performed a motor examination and drew blood to estimate plasma LNAA, PA, and levodopa levels. Six-hundred mg of aspartame had no effect on plasma PA or motor status. Although 1,200 mg of aspartame significantly increased plasma PA, motor performance did not deteriorate. Aspartame consumption in amounts well in excess of what would be consumed by heavy users of aspartame-sweetened products has no adverse effect on PD patients. Publication Types: Clinical trial Controlled clinical trial PMID: 8451009, UI: 93196900 =========================================
TITLE: Aspartame. Review of safety issues. Council on Scientific Affairs. SOURCE: JAMA 1985 Jul 19;254(3):400-2 CITATION IDS: PMID: 2861297 UI: 85237822 ABSTRACT: This report examines the safety issues related to the nutritive sweetener aspartame, including possible toxic effects of aspartame's component amino acids, aspartic acid and phenylalanine, and its major decomposition products, methanol and diketopiperazine, and the potential synergistic effect of aspartame and dietary carbohydrate on brain neurochemicals. Available evidence suggests that consumption of aspartame by normal humans is safe and is not associated with serious adverse health effects. Individuals who need to control their phenylalanine intake should handle aspartame like any other source of phenylalanine. ************************************************************
[ In this critical review, I took pains to quote entire abstracts about ochratoxin A toxicity and aspartame. ]
http://groups.yahoo.com/group/aspartameNM/message/1070 critique of aspartame review, French Food Safety Agency AFSSA 2002.05.07 aspartamgb.pdf (18 pages, in English), Martin Hirsch: Murray 2004.04.13
[ Without changing text, I have converted this to plain text, so it can be put out widely on the world Net, corrected minor typos, and added spacing to increase the readability of the dense scientific prose. My comments are in square brackets.....]
[ Here I am quoting the French review re ozyratoxin... ]
4 - Metabolism and toxicology:
Both in laboratory animals and in humans, aspartame is metabolised in the gastrointestinal tractus into methanol, aspartic acid and phenylalanine.
On a weight basis, metabolism of aspartame generates approximately 50% phenylalanine, 40% aspartic acid and 10% methanol. [ 11% exactly ]
Metabolism occurs in the intestinal lumen and in the enterocytes (Karim et al., 1996; Stegink et al., 1996).
It has been reported that a small proportion of the aspartame (10-12% of the intake) might be absorbed without metabolisation but this result requires confirmation (Creppy et al., 1998). [ Creppy EE, Baudrimont I, Betbeder AM. How aspartame prevents the toxicity of ochratoxin A. J. Toxicol. Sci., 1998, 23(suppl 2), 165-172. Department of Toxicology, Laboratory of Toxicology and Applied Hygiene, University Victor Segalen Bordeaux 2, 146, rue Leo-Saignat, 33076 Bordeaux, France. edmond.creppy@tox.u-bordeaux2.fr
"The protective effects of aspartame on OTA-induced nephrotoxicity could be based on several mechanisms related to competitive binding to plasma proteins, to transport or tissue distribution in the kidney..." This quixotic claim amounts to using one deadly toxin to interfere with another, similar toxin, and, in addition, gives evidence that aspartame is a complex drug, not a "food additive", with largely unknown effects in humans.
Arch Toxicol. 2001 May; 75(3): 176-83. Aspartame prevents the karyomegaly induced by ochratoxin A in rat kidney. Baudrimont I, Sostaric B, Yenot C, Betbeder AM, Dano-Djedje S, Sanni A, Steyn PS, Creppy EE. UFR des Sciences Pharmaceutiques, Universite Victor Segalen, Bordeaux, France. isabelle.baudrimont@tox.u-bordeaux2.fr
Ochratoxin A (OTA) is a mycotoxin produced by Aspergillus ochraceus as well as other moulds. This mycotoxin contaminates animal feed and food. OTA is immunosuppressive, genotoxic, teratogenic, carcinogenic and is nephrotoxic in all animal species studied so far. OTA inhibits protein synthesis and induces lipid peroxidation. Since it seems impossible to avoid completely contamination of foodstuffs by toxigenic fungi, it is necessary to investigate the possible ways of limiting such toxicity. An attempt to prevent OTA-induced nephrotoxic and genotoxic effects, mainly the karyomegaly, has been made in vivo using aspartame (L-aspartyl-L-phenylalanine methyl ester), a structural analogue of both OTA and phenylalanine. Aspartame (25 mg/kg body weight) prevented most of the nephrotoxic effects induced by OTA (289 microg/kg body weight). It also showed some utility in preventing morphological and histological damage, mainly the karyomegaly. The protective effects of aspartame on OTA-induced nephrotoxicity could be based on several mechanisms related to competitive binding to plasma proteins, to transport or tissue distribution in the kidney or to the elimination of the toxin in the urine. PMID: 11409539
"Obviously the molecular mechanism mediating the preventive effect of Aspartame is the delivery of phenylalanine by cleavage of the peptide but also the direct effect of the peptide on the bending capacity and transport of the toxin in vivo and in vitro. As a matter of fact when Aspartame is given to animals or added in culture medium the amount of peptide found unchanged (10-15%) may account for a preventive effect as entire peptide. "
J Toxicol Sci. 1998 Jul; 23 Suppl 2: 165-72. How aspartame prevents the toxicity of ochratoxin A. Creppy EE, Baudrimont I, Anne-Marie. Toxicology Department, University of Bordeaux, France.
The ubiquitous mycotoxin ochratoxin A (OTA) is found as a frequent contaminant of a large variety of food and feed and beverage such as beer, coffee and wine. It is produced as a secondary metabolite of moulds from Aspergillus and Penicillium genera. Ochratoxin A has been shown experimentally to inhibit protein synthesis by competition with phenylalanine its structural analogue and also to enhance oxygen reactive radicals production. The combination of these basic mechanisms with the unusual long plasma half-life time (35 days in non-human primates and in humans), the metabolisation of OTA into still active derivatives and glutathione conjugate both potentially reactive with cellular macromolecules including DNA could explain the multiple toxic effects, cytotoxicity, teratogenicity, genotoxicity, mutagenicity and carcinogenicity. A relation was first recognised between exposure to OTA in the Balkan geographical area and Balkan Endemic Nephropathy (BEN) with a high incidence (nearly 50 times higher than normal) of urinary tract tumours. Exposure rates of OTA are measurable in blood of humans and animals and are established in several countries including Scandinavia, Germany, France, Italy, Canada, Japan and Northern Africa mainly Tunisia and Egypt. The impact of OTA exposure in non- endemic areas in the world is not known, the rates of exposure being not correlated with the disease records, especially in developed countries, due to lake of well- designed epidemiological studies, genetic polymorphism and maybe to dietary contents of radical scavengers and antioxidants. However the incidence and mortality rates of renal cancer are increasing in European countries and Northern Africa which could be a global resultant of human exposure to natural compounds in food such as mycotoxins and especially ochratoxin A. In addition to special care to prevent the growth of moulds and detoxification measures there was a need for the prevention of the OTA-induced toxic effects once the toxin is ingested. For this purpose several compound have been studied including some therapeutic agents such as piroxicam which cannot be proposed for a large scale use in humans for preventive purpose. Among other compounds, Aspartame, already used as sweetener has shown a real effectiveness in vivo confirmed largely in vitro. When rats exposed to OTA (289 micrograms/kg) by oral route every two days are given 25 mg/kg similarly for several weeks, all the toxic effects including genotoxicity are very efficiently prevented as shown for example by the disappearance of DNA- adducts in tissues excised from treated animals. Aspartame is also effective in washing out the toxin when given a
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