Medical Forum / Diseases and Disorders / Diabetes / May 2008
Type 2 may be a disorder of the upper intestine?
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Robert Miles - 05 Mar 2008 20:15 GMT An article suggesting type 2 diabetes may be a disorder of the upper small intestine:
http://www.sciencedaily.com/releases/2008/03/080305113659.htm
just@looking - 05 Mar 2008 21:25 GMT http://www.sciencedaily.com/releases/2008/03/080305113659.htm
When the upper gut is bypassed there is a large increase in the incretin glp-1 which is found in higher levels from the l cells of the lower smallgut and large gut. Glp-1 works like the drug byetta which prompts insulin release when glucose levels rise.
Large increases in glp-1 have been measured in bypass patients because food whichprompts glp-1 production has not been largely digested as it would have been in the upper gut but thrown instead into the area of densest glp-1 production. In a very few there is so much that it produces an insulin created hypo situation.
Also in the upper gut and decreasing along its length and largely absent in the large gut are d cells which produce somatastatin which is acounterregulatory hormone for glp-1. Thus in a bypass patient the area of the most somatastatin production In the upper gut is also missing.
It seems to me the process the person in the article suggests be found has in fact already been known and described.
just@looking.com - 05 Mar 2008 21:28 GMT http://www.sciencedaily.com/releases/2008/03/080305113659.htm
When the upper gut is bypassed there is a large increase in the incretin glp-1 which is found in higher levels from the l cells of the lower smallgut and large gut. Glp-1 works like the drug byetta which prompts insulin release when glucose levels rise.
Large increases in glp-1 have been measured in bypass patients because food whichprompts glp-1 production has not been largely digested as it would have been in the upper gut but thrown instead into the area of densest glp-1 production. In a very few there is so much that it produces an insulin created hypo situation.
Also in the upper gut and decreasing along its length and largely absent in the large gut are d cells which produce somatastatin which is acounterregulatory hormone for glp-1. Thus in a bypass patient the area of the most somatastatin production In the upper gut is also missing.
It seems to me the process the person in the article suggests be found has in fact already been known and described.
Andrew B. Chung, MD/PhD - 05 Mar 2008 22:58 GMT > An article suggesting type 2 diabetes may be a disorder of the > upper small intestine: > > http://www.sciencedaily.com/releases/2008/03/080305113659.htm From your cite:
ScienceDaily (Mar. 5, 2008) -- Growing evidence shows that surgery may effectively cure Type 2 diabetes -- an approach that not only may change the way the disease is treated, but that introduces a new way of thinking about diabetes.
A new article -- published in a special supplement to the February issue of Diabetes Care by a leading expert in the emerging field of diabetes surgery -- points to the small bowel as the possible site of critical mechanisms for the development of diabetes.
The study's author, Dr. Francesco Rubino of NewYork-Presbyterian Hospital/Weill Cornell Medical Center, presents scientific evidence on the mechanisms of diabetes control after surgery. Clinical studies have shown that procedures that simply restrict the stomach's size (i.e., gastric banding) improve diabetes only by inducing massive weight loss. By studying diabetes in animals, Dr. Rubino was the first to provide scientific evidence that gastrointestinal bypass operations involving rerouting the gastrointestinal tract (i.e., gastric bypass) can cause diabetes remission independently of any weight loss, and even in subjects that are not obese.
"By answering the question of how diabetes surgery works, we may be answering the question of how diabetes itself works," says Dr. Rubino, who is a professor in the Department of Surgery at Weill Cornell Medical College and chief of gastrointestinal metabolic surgery at NewYork-Presbyterian/Weill Cornell.
Dr. Rubino's prior research has shown that the primary mechanisms by which gastrointestinal bypass procedures control diabetes specifically rely on the bypass of the upper small intestine -- the duodenum and jejunum. This is a key finding that may point to the origins of diabetes.
"When we bypass the duodenum and jejunum, we are bypassing what may be the source of the problem," says Dr. Rubino, who is heading up NewYork- Presbyterian/Weill Cornell's Diabetes Surgery Center.
In fact, it has become increasingly evident that the gastrointestinal tract plays an important role in energy regulation, and that many gut hormones are involved in the regulation of sugar metabolism. "It should not surprise anyone that surgically altering the bowel's anatomy affects the mechanisms that regulate blood sugar levels, eventually influencing diabetes," Dr. Rubino says.
While other gastrointestinal operations may cure diabetes as an effect of changes that improve blood sugar levels, Dr. Rubino's research findings in animals show that procedures based on a bypass of the upper intestine may work instead by reversing abnormalities of blood glucose regulation.
In fact, bypass of the upper small intestine does not improve the ability of the body to regulate blood sugar levels. "When performed in subjects who are not diabetic, the bypass of the upper intestine may even impair the mechanisms that regulate blood levels of glucose," says Dr. Rubino. In striking contrast, when nutrients' passage is diverted from the upper intestine of diabetic patients, diabetes resolves.
This, he explains, implies that the upper intestine of diabetic patients may be the site where an abnormal signal is produced, causing, or at least favoring, the development of the disease.
How exactly the upper intestine is dysfunctional remains to be seen. Dr. Rubino proposes an original explanation known in the scientific community as the "anti-incretin theory."
Incretins are gastrointestinal hormones, produced in response to the transit of nutrients, that boost insulin production. Because an excess of insulin can determine hypoglycemia (extremely low levels of blood sugar) -- a life-threatening condition -- Dr. Rubino speculates that the body has a counter-regulatory mechanism (or "anti-incretin" mechanism), activated by the same passage of nutrients through the upper intestine. The latter mechanism would act to decrease both the secretion and the action of insulin.
"In healthy patients, a correct balance between incretin and anti- incretin factors maintains normal excursions of sugar levels in the bloodstream," he explains. "In some individuals, the duodenum and jejunum may be producing too much of this anti-incretin, thereby reducing insulin secretion and blocking the action of insulin, ultimately resulting in Type 2 diabetes."
Indeed, in Type 2 diabetes, cells are resistant to the action of insulin ("insulin resistance"), while the pancreas is unable to produce enough insulin to overcome the resistance.
After gastrointestinal bypass procedures, the exclusion of the upper small intestine from the transit of nutrients may offset the abnormal production of anti-incretin, thereby resulting in remission of diabetes.
In order to better understand these mechanisms, and help make the potential benefits of diabetes surgery more widely available, Dr. Rubino calls for prioritizing research in diabetes surgery. "Further research on the exact molecular mechanisms of diabetes, surgical control of diabetes and the role played by the bowel in the disease may bring us closer to the cause of diabetes."
Today, most patients with diabetes are not offered a surgical option, and bariatric surgery is recommended only for those with severe obesity (a body mass index, or BMI, of greater than 35kg).
"It has become clear, however, that BMI cut-offs can no longer be used to determine who is an ideal candidate for surgical treatment of diabetes," says Dr. Rubino.
"There is, in fact, growing evidence that diabetes surgery can be effective even for patients who are only slightly obese or just overweight. Clinical trials in this field are therefore a priority as they allow us to compare diabetes surgery to other treatment options in the attempt to understand when the benefits of surgery outweigh its risks. Clinical guidelines for diabetes surgery will certainly be different from those for bariatric surgery, and should not be based only on BMI levels," he notes.
"The lesson we have learned with diabetes surgery is that diabetes is not always a chronic and relentless disease, where the only possible treatment goal is just the control of hyperglycemia and minimization of the risk of complications. Gastrointestinal surgery offers the possibility of complete disease remission. This is a major shift in the way we consider treatment goals for diabetes. It is unprecedented in the history of the disease," adds Dr. Rubino.
Type 2 diabetes, which accounts for 90 to 95 percent of all cases of diabetes, is a growing epidemic that afflicts more than 200 million people worldwide.
At a time when diabetes is growing epidemically worldwide, Dr. Rubino says that finding new treatment strategies is a race against time. "At this point, missing the opportunity that surgery offers is not an option."
In addition to having performed landmark studies in the field of diabetes surgery, Dr. Rubino was the principal organizer of an influential Diabetes Surgery Summit, held in Rome in March 2007. This international consensus conference helped establish the field, making international recommendations for the use of surgery and creating an International Diabetes Surgery Task Force. Dr. Rubino serves as a founding member.
*** end article ***
It remains much smarter to willfully choose to eat less, down to the right amount ...
http://HeartMDPhD.com/BeSmart
... to lose all the black fat, which is the real cause of the insulin resistance (IR/MetS) that undergirds type-2 diabetes:
http://HeartMDPhD.com/OffalFat
http://HeartMDPhD.com/BlackFat
Farm animals do start dropping dead after they have been fattened to the point of acquiring black fat.
Be hungry... be healthy... be hungrier... be euglycemic:
http://TheWellnesFoundation.com/BeHealthy
Prayerfully in the infinite power and might of the Holy Spirit,
Andrew <>< -- Andrew B. Chung, MD/PhD Lawful steward of http://EmoryCardiology.com Brethren of the KING of kings and LORD of lords. http://HeartMDPhD.com/ChristianBrethren
J666 - 05 Mar 2008 23:17 GMT On Mar 5, 4:58 pm, Woof Woof
> Farm animals do start dropping dead after they have been fattened to > the point of acquiring black fat. We now have a 2PD Omer Approach for farm animals to keep the black fat off while fattening the animals for proper slaughter.
http://HeartMDPhD.com/FarmApproachTherapy(FAT)
Exodus 22:31 "You are to be my holy people. So do not eat the meat of an animal torn by wild beasts; throw it to the dogs.
Andrew B. Chung, MD/PhD - 05 Mar 2008 23:19 GMT http://HeartMDPhD.com/OAF
J666 - 05 Mar 2008 23:21 GMT http://HeartMDPhD.com/OAFOAF
> On Mar 5, 4:58 pm, Woof Woof > [quoted text clipped - 9 lines] > "You are to be my holy people. So do not eat the meat of an animal > torn by wild beasts; throw it to the dogs. Andrew B. Chung, MD/PhD - 05 Mar 2008 23:23 GMT http://HeartMDPhD.com/ARF
J Clement - 06 Mar 2008 02:53 GMT On Mar 5, 5:58�pm, "Andrew B. Chung, MD/PhD" <heartdo...@emorycardiology.com> wrote:
> > An article suggesting type 2 diabetes may be a disorder of the > > upper small intestine: [quoted text clipped - 171 lines] > Lawful steward ofhttp://EmoryCardiology.com > Brethren of the KING of kings and LORD of lords.http://HeartMDPhD.com/ChristianBrethren Cattle 101
No source, other than Dr. Chung, makes any reference to any farm animal dying from or having 'black fat'.
Overfed cattle can develop Acidosis a condition where gases from fermenting feed causes their rumen to bloat. Sudden changes in diet are a frequent cause. This can be also be a result of malnourishment. Acute acidosis can cause death.
"One misconception many feeders have is that if they limit feed offered to a pen of cattle, they can prevent the up and down swings in feed intake, thus minimizing acidosis. Feed records will show intake variation is small, but this is an artificial situation that does not reflect true feed intakes for two reasons. " Source: http://www.cattlenetwork.com
"Do not allow cattle to get hungry as they may overeat and bloat when they gain access to fresh pasture." Source : http://ag.udel.edu/extension
So for cattle, and one suspects many mammals, hunger is not 'great' or 'wonderful'. Hunger can and does cause problems.
My guess is Dr, Chung will now post a link to a google post he made earlier or to one of his websites claiming anyone who disagrees with him is an agent of satan.
I am certain he will not post verifiable facts to dispute the information given above.
JS
Andrew B. Chung, MD/PhD - 06 Mar 2008 03:53 GMT http://HeartMDPhD.com/Liarsatan
J666 - 06 Mar 2008 04:46 GMT On Mar 5, 8:53 pm, J Clement
> My guess is Dr, Chung will now post a link to a google post he made > earlier or to one of his websites claiming anyone who disagrees with [quoted text clipped - 4 lines] > > JS Looks like Chung did just that.
Jesus H. Christ could say Holy Cow
http://www.whitedust.demon.co.uk/scabbydog/therealjesuscow.jpg
http://www.whitedust.demon.co.uk/scabbydog/jesuscow.gif
Andrew B. Chung, MD/PhD - 06 Mar 2008 05:18 GMT http://HeartMDPhD.com/ARF
<><
May dear neighbors, friends, and brethren have a blessedly wonderful 2008th year since the birth of our LORD Jesus Christ as the Son of Man ...
... by being hungrier:
http://TruthRUS.org/KnowingGOD
Hunger is wonderful:
http://HeartMDPHD.com/Hunger
It's how we know what GOD wants, which is what is good.
Yes, hunger is our knowledge of good versus evil that Adam and Eve paid for with their and our immortal lives.
Those who suffer from the powerful delusion predicted by the prophecy of 2 Thessalonians 2:9-11 would deny this and perish ( gone !!! ) forever ...
http://HeartMDPhD.com/Convicts/CrazyOne
http://HeartMDPhD.com/Convicts/CrazyTwo
http://HeartMDPhD.com/Convicts/CrazyThree
http://HeartMDPhD.com/Convicts/CrazyFour
http://HeartMDPhD.com/Convicts/Bob
... gone:
http://YouTube.com/watch?v=Qb6d_z5C35E
Such will be the demise of all those who refuse to know **and** love the truth, Who is LORD Jesus Christ:
http://HeartMDPhD.com/Love/TheTruth
Be hungry... be healthy... be hungrier... be blessed:
http://HeartMDPhD.com/HolySpirit/BeBlessed
"Blessed are you who hunger NOW...
... for you will be satisfied." -- LORD Jesus Christ (Luke 6:21)
Amen.
http://HeartMDPhD.com/HolySpirit/Luke6_21
Prayerfully in the infinite power and might of the Holy Spirit,
Andrew <>< -- Andrew B. Chung, MD/PhD Lawful steward of http://EmoryCardiology.com Brethren of the KING of kings and LORD of lords. http://HeartMDPhD.com/ChristianBrethren
J666 - 06 Mar 2008 05:37 GMT On Mar 5, 11:18 pm, MooMoo
Chung's udder nonsense snipped
> Lawful herder of http://EmooryCardiology.com
>http://HeartMooDPhD.com/MooMo
Andrew B. Chung, MD/PhD - 06 Mar 2008 06:04 GMT http://HeartMDPhD.com/Idioticsatan
<><
May dear neighbors, friends, and brethren have a blessedly wonderful 2008th year since the birth of our LORD Jesus Christ as the Son of Man ...
... by being hungrier:
http://TruthRUS.org/KnowingGOD
Hunger is wonderful:
http://HeartMDPhD.com/Hunger
It's how we know what GOD wants, which is what is good.
Yes, hunger is our knowledge of good versus evil that Adam and Eve paid for with their and our immortal lives.
Those who suffer from the powerful delusion predicted by the prophecy of 2 Thessalonians 2:9-11 would deny this and perish ( gone !!! ) forever ...
http://HeartMDPhD.com/Convicts/CrazyOne
http://HeartMDPhD.com/Convicts/CrazyTwo
http://HeartMDPhD.com/Convicts/CrazyThree
http://HeartMDPhD.com/Convicts/CrazyFour
http://HeartMDPhD.com/Convicts/Bob
... gone:
http://YouTube.com/watch?v=Qb6d_z5C35E
Such will be the demise of all those who refuse to know **and** love the truth, Who is LORD Jesus Christ:
http://HeartMDPhD.com/Love/TheTruth
Be hungry... be healthy... be hungrier... be blessed:
http://HeartMDPhD.com/HolySpirit/BeBlessed
"Blessed are you who hunger NOW...
... for you will be satisfied." -- LORD Jesus Christ (Luke 6:21)
Amen.
http:/HeartMDPhD.com/HolySpirit/Luke6_21
Prayerfully in the infinite power and might of the Holy Spirit,
Andrew <>< -- Andrew B. Chung, MD/PhD Lawful steward of http://EmoryCardiology.com Brethren of the KING of kings and LORD of lords. http://HeartMDPhD.com/ChristianBrethren
Cary Kittrell - 06 Mar 2008 16:52 GMT > On Mar 5, 8:53 pm, J Clement > [quoted text clipped - 8 lines] > > Looks like Chung did just that. Well, hey, it was a sucker bet.
-- cary
> Jesus H. Christ could say Holy Cow > > http://www.whitedust.demon.co.uk/scabbydog/therealjesuscow.jpg > > http://www.whitedust.demon.co.uk/scabbydog/jesuscow.gif Jefferson - 26 Mar 2008 15:40 GMT > An article suggesting type 2 diabetes may be a disorder of the > upper small intestine: > > http://www.sciencedaily.com/releases/2008/03/080305113659.htm More is said in the Science Daily release than in the following abstract. I often keep a copy of an abstract in a pending file as a reminder to access the full article when it is available. Since this was published in the February 2008 issue the full article should be available in August (6 months).
Is Type 2 Diabetes an Operable Intestinal Disease? - http://tinyurl.com/3bgmnk or http://care.diabetesjournals.org/cgi/content/abstract/31/Supplement_2/S290
This is peculiar in that the duodenum is where the duct from the exocrine pancreas secretes the enzyme that breaksdown fats, carbohydrates, and proteins. The duodenum is also the location of the duct that secretes the concentrated bile from the gall bladder that is initially produced in the liver. The jejunum is the location of the K-type cells that produce the incretin hormone GIP. All indications are that this was an animal study. At this point the bypass does not make sense to me. ;)
"Dr. Rubino's prior research has shown that the primary mechanisms by which gastrointestinal bypass procedures control diabetes specifically rely on the bypass of the upper small intestine -- the duodenum and jejunum. This is a key finding that may point to the origins of diabetes.
"When we bypass the duodenum and jejunum, we are bypassing what may be the source of the problem," says Dr. Rubino, who is heading up NewYork- Presbyterian/Weill Cornell's Diabetes Surgery Center.
In fact, it has become increasingly evident that the gastrointestinal tract plays an important role in energy regulation, and that many gut hormones are involved in the regulation of sugar metabolism. "It should not surprise anyone that surgically altering the bowel's anatomy affects the mechanisms that regulate blood sugar levels, eventually influencing diabetes," Dr. Rubino says.
While other gastrointestinal operations may cure diabetes as an effect of changes that improve blood sugar levels, Dr. Rubino's research findings in animals show that procedures based on a bypass of the upper intestine may work instead by reversing abnormalities of blood glucose regulation."
Jefferson - 29 Mar 2008 20:42 GMT >> An article suggesting type 2 diabetes may be a disorder of the >> upper small intestine: [quoted text clipped - 19 lines] > that this was an animal study. At this point the bypass does not make > sense to me. ;) There is not a lot available on scholar.google.com about an anti-incretin effect. One abstract written in 1996 wrote about such a phenomena. "Because enterostatin is generated in the small intestine after feeding, it might play a role in the enteroinsular axis as an anti-incretin agent."PMID: 8772715
Fat Digestion and its Role in Appetite Regulation and Energy Balance -The Importance of Enterostatin and Tetrahydrolipstatin
Authors: Lindqvist Andreas1; Erlanson-Albertsson Charlotte1
Source: Current Medicinal Chemistry - Central Nervous System Agents, Volume 3, Number 3, September 2003 , pp. 157-175(19)
Abstract: A high fat intake, together with an inability to match lipid utilization of a high-fat intake, is correlated with obesity in man. In this review enterostatin, a peptide, which specifically reduces fat intake, is described. Enterostatin is formed in the intestine by the cleavage of pancreatic procolipase, the remaining colipase serving as an obligatory cofactor for pancreatic lipase during fat digestion. Enterostatin is also produced in chief cells of the stomach as part of procolipase as well as in enterochromaffine cells independent of procolipase, most frequent in the antral part of the stomach extending all along the intestine down to the ileum. Enterostatin has been found to increase during fat feeding, where it is found in the intestinal lumen, in the lymph as well as in the circulating blood. When reducing food intake, enterostatin behaves as a physiological satiety substance, inducing early satiety. A raised production of serotonin has been measured centrally. During long-term treatment, enterostatin has been found to reduce body weight in the rat and mouse. A reduced body weight may be explained by a decreased food intake and an increased energy expenditure through activation of the sympathetic nervous system and increased expression of uncoupling protein 1 in brown adipose tissue. Enterostatin also increases the expression of uncoupling protein 2 in the gastrointestinal tract. The mechanism of action of enterostatin suggests the involvement of the opioid system being inhibited by enterostatin. Another target protein for enterostatin is the beta-subunit of F1F0-ATPase. These two target proteins may explain the appetite regulating effects of enterostatin as well as the thermogenic effects.
Keywords: fat intake; insulin; body weight; obesity; pancreas; colipase http://tinyurl.com/35p87f
The sites of action give some indication of what is physiologically involved with enterostatin. There is a complex interaction involving portions of the brain, the vagal nerve, the stomach, and the lower portion of the small intestine.
Selected excerpts: "Enterostatin, a pentapeptide released from the exocrine pancreas and gastrointestinal tract, selectively inhibits fat intake through activation of an afferent vagal signaling pathway. This study investigated if the effects of enterostatin were mediated through a CCK-dependent pathway. [...] The procolipase gene is expressed in the exocrine pancreas, the stomach and duodenal mucosa (29), and in specific brain regions (13). [...] If enterostatin acts through CCK-A receptors, it would be expected that CCK and enterostatin should share similar selective effects on intake of dietary fat. [...] CCK given peripherally or into the near-celiac artery inhibits food intake (3). This response is likewise recognized to result from an activation of afferent vagal neurons from the gastrointestinal tract to the brain stem and higher brain centers (38). Indeed CCK-A receptors are present in afferent vagal neurons to the NTS region of the brain stem (4). Thus it is possible that enterostatin modulates its response from the periphery by activation of a subset of CCK-dependent vagal afferent neurons." Source: Enterostatin inhibition of dietary fat intake is dependent on CCK-A receptors (a 2003 article) - http://ajpregu.physiology.org/cgi/content/full/285/2/R321
Frank
Jefferson - 07 Apr 2008 18:09 GMT >> An article suggesting type 2 diabetes may be a disorder of the >> upper small intestine: [quoted text clipped - 10 lines] > http://tinyurl.com/3bgmnk or > http://care.diabetesjournals.org/cgi/content/abstract/31/Supplement_2/S290 By chance I found that a small trial of this procedure is to occur in humans later this year. By the time this trial starts the full article in Diabetes Care should be available for non-subscribers.
Study of Duodenal-Jejunal Bypass(DJB) as a Potential Cure for Type 2 Diabetes Mellitus - http://clinicaltrials.gov/ct2/show/NCT00562029?term=diabetes&rank=119
Study Type: Interventional Study Design: Treatment, Non-Randomized, Open Label, Single Group Assignment, Safety/Efficacy Study Official Title: Modified Duodenal Switch Procedure "Duodenal-Jejunal Bypass" (Diabetes Surgery) As A Potential Cure for Type 2 Diabetes Mellitus in Non-Obese Patients- a Pilot Project to Validate a Prospective Randomized Control Trial
Further study details as provided by Sound Shore Medical Center of Westchester:
Primary Outcome Measures: *Measure: Resolution of Type 2 Diabetes Mellitus [ Time Frame: One year] Secondary Outcome Measures: * Measure: Safety and efficacy of duodenal-jejunal bypass [ Time Frame: One year ] Estimated Enrollment: 10 Study Start Date: November 2007 Estimated Study Completion Date: November 2008
Frank
John Williamson - 07 Apr 2008 18:43 GMT >> An article suggesting type 2 diabetes may be a disorder of the >> upper small intestine: [quoted text clipped - 42 lines] > upper intestine may work instead by reversing abnormalities of blood > glucose regulation." This originally came up a while ago as a "by the way, we found that" on a follow up of a number of severely obese type 2 patients receiving this surgery to aid weight loss, there was an over 90% cure rate for the diabetes, even *before* noticeable weight loss occured.
Cured, as in on a normal diet & off *all* diabetic medications for the period covered. (So far a couple of years, maybe as many as 5, IIRC)
There was speculation about intentions to look for ways to send/ inhibit, whichever it turned out to be, the signals from this area by non surgical means. It would appear someone's finally got the funding to look into it. :-)
It's considered by the source I saw as a high risk surgical procedure, though, & is normally only considered as a last resort after all other methods of losing weight have failed.
 Signature Tciao for Now!
John.
Jefferson - 07 Apr 2008 22:42 GMT >> "Dr. Rubino's prior research has shown that the primary mechanisms by >> which gastrointestinal bypass procedures control diabetes specifically [quoted text clipped - 5 lines] >> the source of the problem," says Dr. Rubino, who is heading up NewYork- >> Presbyterian/Weill Cornell's Diabetes Surgery Center.
> This originally came up a while ago as a "by the way, we found that" on > a follow up of a number of severely obese type 2 patients receiving this [quoted text clipped - 3 lines] > Cured, as in on a normal diet & off *all* diabetic medications for the > period covered. (So far a couple of years, maybe as many as 5, IIRC) No John this is not the same procedure. Previously this was only done only in animals such as rats. The earlier surgeries involved the stomach not the lower intestines. This surgery does not involve the stomach. The duodenum is the first part of the small intestine immediately after the stomach.
Frank
John Williamson - 08 Apr 2008 00:03 GMT >>> "Dr. Rubino's prior research has shown that the primary mechanisms by >>> which gastrointestinal bypass procedures control diabetes specifically [quoted text clipped - 19 lines] > stomach. The duodenum is the first part of the small intestine > immediately after the stomach. Odd then, that I remember the headline on the title page as "Doudenal bypass cures diabetes" or some variation of those words, in New Scientist in September last year, complete with a pretty picture in the article showing the bits they bypassed. Cure rate stated as 98% in a total of 50 patients, all of whom were severely obese type 2 diabetics.
<Checks in memory and on google> Here we go...
http://www.newscientist.com/channel/health/mg19526193.100-could-type-2-diabetes- be-reversed-using-surgery.html
for an extract of the full article.
03 September 2007 Magazine issue 2619
There was also a thread about it on this newsgroup at the same time where I was involved, which you may have missed as Chunk also got involved.
It's still in the Google archive.
Quick summary. Of 50 or more patients who had the operation for weight loss at the hospitals taking part, 98% were cured totally, & of a group of 7 patients who were operated on (In Brazil, IIRC) purely because of diabetes after the information came to light, 100% were cured.
The information originally came to light when someone was doing some data mining in the hospital records.
The procedure seems a bit risky for my liking at the moment, but then again, I'm only on an insulin agonist & metformin. If it was a choice between injecting insulin & having this surgery, I might be willing to have a go at it.
Originally noted by a European cross border group with links to Brazil, apparently, & as you say, not to be confused with gastric bypass. They were speculating that the duodenal area was generating nerve or chemical signals that were affecting the pancreas, & when the food stopped passing through the duodenum, that stopped the signals, restoring normal pancreatic function.
The American work may well be based on animal studies, but the European & Brazil based information was definitely a by product of surgery carried out for reasons other than diabetes.
Maybe both groups should have a chat.....
Still & all, a useful tool in the right circumstances, especially if they find out how it works & can reproduce the effects without major bowel surgery.
 Signature Tciao for Now!
John.
Jefferson - 08 Apr 2008 19:17 GMT >>>> "Dr. Rubino's prior research has shown that the primary mechanisms by >>>> which gastrointestinal bypass procedures control diabetes specifically [quoted text clipped - 5 lines] >>>> the source of the problem," says Dr. Rubino, who is heading up NewYork- >>>> Presbyterian/Weill Cornell's Diabetes Surgery Center. The Mechanism of Diabetes Control After Gastrointestinal Bypass Surgery Reveals a Role of the Proximal Small Intestine in the Pathophysiology of Type 2 Diabetes - http://tinyurl.com/6an5kw
In this 2006 article: "Conclusions: This study shows that bypassing a short segment of proximal intestine directly ameliorates type 2 diabetes, independently of effects on food intake, body weight, malabsorption, or nutrient delivery to the hindgut. These findings suggest that a proximal intestinal bypass could be considered for diabetes treatment and that potentially undiscovered factors from the proximal bowel might contribute to the pathophysiology of type 2 diabetes." Dr. Rubino has co-authored articles on this topic as early as 2002 (see search at the end).
>>> This originally came up a while ago as a "by the way, we found that" >>> on a follow up of a number of severely obese type 2 patients [quoted text clipped - 28 lines] > There was also a thread about it on this newsgroup at the same time > where I was involved, which you may have missed as Chunk also got involved. Yes, Chunk is like a cancer. I tend to avoid reading threads after the jerk enters. I also avoid long threads where the topic tends to change. You are right about the previous posts, yet it seems as though the procedure has been modified somewhat.
> It's still in the Google archive. I found a thread on alt.diabetes.support.uk but it did not mention the New Scientist article you cited above. - http://tinyurl.com/6k7dd5.
> Quick summary. Of 50 or more patients who had the operation for weight > loss at the hospitals taking part, 98% were cured totally, & of a group [quoted text clipped - 19 lines] > & Brazil based information was definitely a by product of surgery > carried out for reasons other than diabetes. It could be that the addition of jejunum was Dr. Rubino change.
More background information: Study of Duodenal-Jejunal Bypass(DJB) as a Potential Cure for Type 2 Diabetes Mellitus - http://clinicaltrials.gov/ct2/show/NCT00562029?term=diabetes&rank=119
"Detailed Description:
Hypothesis: The duodenum plays a major role in glucose homeostasis through mechanisms largely unknown at this time. Evidence of this hypothesis comes from accumulated data in bariatric surgery patients who underwent Roux-en-y Gastric Bypass or Biliopancreatic Diversion (BPD) with or without a Duodenal Switch. Current evidence strongly supports this hypothesis with a long term (over 10 years) Type 2 Diabetes Mellitus(T2DM) resolution rate of 84-86% following the gastric bypass and over 95% for the duodenal switch.
The clinical resolution of T2DM is defined as independence of all anti-diabetic medications and maintaining a HbA1c less than 6.0. Recent rodent experiments by Francesco Rubino and subsequent human case reports by Cohen et al. supports the validity of this hypothesis. The modified procedure involved a roux-en-y bypass of the duodenum and 30-50cm of proximal jejunum, unaltering the stomach and pylorus resulted in resolution of T2DM with no weight loss in all subjects."
The last sentence is the clue that this is a modified procedure. About 1 to 2 inches of the jejunum are involved beyond the duodenum.
A scholar.google.com search for duodenum+bypass+diabetes+jejunum+human +trials - http://tinyurl.com/5dhxaj
John Williamson - 08 Apr 2008 22:03 GMT <technical bits snipped for brevity> I'll be checking more when I can get some unthrottled bandwidth, this fidddling about via cellphone isn't cheap. :-/
Whatever's being done by whichever group, it definitely sounds as though it's of great interest to us type 2's as long as the other risks from the operation can be minimised or if they find the underlying reason for what's going on & can reproduce it as a none or minimally invasive procedure.
 Signature Tciao for Now!
John.
Trinkwasser - 09 Apr 2008 18:24 GMT ><technical bits snipped for brevity> I'll be checking more when I can >get some unthrottled bandwidth, this fidddling about via cellphone isn't [quoted text clipped - 5 lines] >what's going on & can reproduce it as a none or minimally invasive >procedure. Yes that's the most important point IMO, if they find out exactly what this operation "cures" then maybe there will open up yet another approach to treatment via drugs or other means to target the system involved.
Jefferson - 09 Apr 2008 20:11 GMT >><technical bits snipped for brevity> I'll be checking more when I can >>get some unthrottled bandwidth, this fidddling about via cellphone isn't [quoted text clipped - 10 lines] > approach to treatment via drugs or other means to target the system > involved. For most T2s this is the heart of message from these studies. If the researchers can find the switch to turn the right stuff on and the wrong stuff off at whatever level that brings about the balance needed for favorable a situation.
Frank
Quentin Grady - 04 May 2008 08:27 GMT ><technical bits snipped for brevity> I'll be checking more when I can >get some unthrottled bandwidth, this fidddling about via cellphone isn't [quoted text clipped - 5 lines] >what's going on & can reproduce it as a none or minimally invasive >procedure. G'day G'day John and Frank,
We live in exciting times. I find it hard to imagine any procedure that could be regarded as non-invasive or even minimally invasive even though some keyhole surgery is approaching that dream. What may be more possible is finding a new drug to use in combination with existing oral medications.
Recently we've had some interesting discussion brought about by a person who regarded his diabetes as the serious sort that could only be controlled by oral medication, not exercise and diet. IMHO most existing medication is little more than a supplement to exercise and diet. The oral meds help but don't take the place of the basics.
If this research throws up a new family of drugs then at least it would be possible to experiment with new combinations of exercise, diet, existing oral meds and new oral meds. Our chances of avoiding complications would get that much better.
Best wishes,
 Signature Quentin Grady ^ ^ / New Zealand, >#,#< [ / \ /\ "... and the blind dog was leading."
http://homepages.paradise.net.nz/quentin
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