Medical Forum / Diseases and Disorders / Arthritis / January 2007
Glucosamine studies.
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grinder - 10 Jan 2007 16:23 GMT Anyone know of any studies that show a benefit of taking Glucosamine and Chondroitin?
I have not found any via google which are NOT paid for by a drug or supplement company (which I throw out).
Ron Peterson - 10 Jan 2007 22:48 GMT > Anyone know of any studies that show a benefit of taking Glucosamine and > Chondroitin?
> I have not found any via google which are NOT paid for by a drug or > supplement company (which I throw out). In the Google search, pick the advanced option and then the scholarly articles. There isn't much that is definitive, but there is some articles showing some benefit.
 Signature Ron
Harvey R. Stone - 11 Jan 2007 17:55 GMT Hi Grinder
I just tried Cushes site on Glu and arthritis and it is not working any more. Here is some information from another site. Harv
Glucosamine Has a Disease-Modifying Effect on Osteoarthritis CME
News Author: Laurie Barclay, MD
March 17, 2004 - Glucosamine has a disease-modifying effect on osteoarthritis, according to the results of two three-year randomized studies published in the March/April issue of Menopause.
"The management of knee osteoarthritis, recognized as responsible for consistent pain and disability, is a major social and economic target in health management," write Olivier Bruyere, MSc, from the WHO Collaborating Center for Public Health Aspect of Osteoarticular Disorders in Liege, Belgium, and colleagues. "For a few years, glucosamine sulfate has been considered a potential disease-modifying drug for osteoarthritis."
This study was a preplanned combination of two three-year, randomized, placebo-controlled, prospective, independent trials investigating the effects of glucosamine sulfate on symptoms and joint structure in osteoarthritis. Of 414 subjects enrolled, 319 were postmenopausal women. Demographics and disease characteristics were similar at baseline in the glucosamine sulfate and placebo groups, both in the overall study population and in the subgroup of postmenopausal women.
After three years, postmenopausal women who received placebo had joint space narrowing on standing anteroposterior knee radiographs, but those who received glucosamine did not. Joint space change was +0.003 mm (95% confidence interval [CI], -0.09 to 0.11) in the glucosamine group and -0.33 mm (95% CI, -0.44 to -0.22) in the placebo group (P < .0001).
The glucosamine sulfate group also improved in the Western Ontario and McMaster Universities Osteoarthritis Index function scale (WOMAC) reflecting symptoms (-14.1%; 95% CI, -22.2 to -5.9), while there was a trend for worsening in the placebo group (5.4%; 95% CI, -4.9 to 15.7; P = .003 between groups).
A potential study limitation is that symptom relief might improve joint space narrowing as seen on standing knee x-rays, but the authors found only a poor relationship between symptom relief and prevention of joint space narrowing. They also found a significant difference in joint space preservation between patients receiving placebo or glucosamine when considering only those patients with symptomatic improvement.
"This analysis, focusing on a large cohort of postmenopausal women, demonstrated for the first time that a pharmacological intervention for osteoarthritis has a disease-modifying effect in this particular population, the most frequently affected by knee osteoarthritis," the authors write. "Glucosamine sulfate, therefore, is the first agent that meets the current requirements to be classified as a symptom- and structure-modifying drug in women with knee osteoarthritis."
>> Anyone know of any studies that show a benefit of taking Glucosamine and >> Chondroitin? [quoted text clipped - 5 lines] > articles. There isn't much that is definitive, but there is some > articles showing some benefit. Don Kirkman - 11 Jan 2007 23:37 GMT It seems to me I heard somewhere that Harvey R. Stone wrote in article <jSuph.18991$sR.1580@newssvr29.news.prodigy.net>:
> I just tried Cushes site on Glu and arthritis and it is not working any >more. Cush's pages are archived at http://tinyurl.com/slzgy on the Wayback Machine. The longer version of the URL is http://web.archive.org/web/*/http://home.gci.net/~cushman4/oa-gcs.htm
There are several versions of Cush's pages saved at that site, ranging from two to six pages and dating from the Spring of 2001 to the Spring of 2006, so you may want to browse if you don't see what you want right away. (I didn't browse more than a couple of links.)
 Signature Don Kirkman
Harvey R. Stone - 11 Jan 2007 18:14 GMT > Anyone know of any studies that show a benefit of taking Glucosamine and > Chondroitin? > > I have not found any via google which are NOT paid for by a drug or > supplement company (which I throw out). Some more info that might help.... Harv
Crikeys - I hope this doesn't wake up you know who LOL!!!
Glucosamine is Associated with Improved Osteoarthritis Outcomes
Gillian A. Hawker1, Michal Abrahamowicz2, Roxane du Berger3, Annette Wilkins4, Elizabeth Badley4. 1Women's College Campus of SWCHSC, Toronto, ON, Canada; 2Department of Epidemiology and Biostatisitics, McGill University, Montreal, PQ, Canada; 3Division of Clinical Epidemiology, The Montreal General Hospital, Montreal, PQ, Canada; 4Arthritis Community Research & Evaluation Unit, UHN, Toronto, ON, Canada
Purpose: To prospectively examine the effect of osteoarthritis (OA) therapies on changes in OA pain and disability.
Methods: A prior study ('96-'98) established a population cohort of 2,411 individuals aged 55+ years with disabling hip/knee arthritis (baseline). In '99, the cohort was invited to participate in a 5-year follow-up study. Information was collected at baseline and annually: age, sex, education, income, living circumstances, self-reported comorbidity, use of therapies (NSAIDs, pain killers, steroid injection, glucosamine, walking aids and devices), hip/knee joint replacement, visits to arthritis health care professionals, and OA pain and disability (WOMAC).
Three mixed regression models were used estimate associations between current use of different therapies and repeated measurements of the WOMAC, adjusting for sociodemographics, comorbidity and concurrent use of other therapies. Model 1 assessed if individuals currently on a therapy have better WOMAC scores across the repeated assessments than those not using the therapy. Model 2 adjusted additionally for baseline WOMAC values while Model 3 adjusted for the prior year WOMAC value to investigate if change from last year is associated with recent use of the therapy.
Results: 1,376 patients contributed a total of 4,119 assessments. Baseline mean age was 72 years; 72% were female. The proportion using glucosamine increased from 9% to 17% during the follow-up period. Adjusting for sociodemographics and concurrent use of other therapies, current glucosamine use was associated with lower WOMAC scores in all models.
Across the repeated assessments, individuals taking glucosamine had a mean WOMAC score 1.8 points lower than individuals with the same characteristics and treatments who were not taking this therapy (95% CI: 0.5 to 3.0, p=0.005). This effect remained significant after adjusting for baseline and final year WOMAC scores, which were on average lower by 1.5 (95% CI: 0.3 to 2.7, p=0.014) and 1.1 (95% CI: 0 to 2.3, p=0.05), respectively.
No other therapy showed any association with improved outcomes. Other significant predictors of lower WOMAC scores at follow-up were: younger age, higher education and income, and male gender. Males had, on average, WOMAC scores 4 points lower than women with the same sociodemographics and treatments (mean 4 points lower; 95% CI: 2.6 to 5.4, p<0.0001).
Conclusion: Of the therapies considered, only glucosamine was associated with an improvement in OA pain and disability providing support for the benefits of this therapy in OA. The absence of an effect with other therapies is likely due to confounding by indication, which is less likely to impact non-physician-prescribed glucosamine use.
Harvey R. Stone - 12 Jan 2007 01:16 GMT > Anyone know of any studies that show a benefit of taking Glucosamine and > Chondroitin? > > I have not found any via google which are NOT paid for by a drug or > supplement company (which I throw out). Hi Grinder
I just tried Cushes site on Glu and arthritis and it is not working any more. Here is some information from another site. Harv
Glucosamine Has a Disease-Modifying Effect on Osteoarthritis CME
News Author: Laurie Barclay, MD
March 17, 2004 - Glucosamine has a disease-modifying effect on osteoarthritis, according to the results of two three-year randomized studies published in the March/April issue of Menopause.
"The management of knee osteoarthritis, recognized as responsible for consistent pain and disability, is a major social and economic target in health management," write Olivier Bruyere, MSc, from the WHO Collaborating Center for Public Health Aspect of Osteoarticular Disorders in Liege, Belgium, and colleagues. "For a few years, glucosamine sulfate has been considered a potential disease-modifying drug for osteoarthritis."
This study was a preplanned combination of two three-year, randomized, placebo-controlled, prospective, independent trials investigating the effects of glucosamine sulfate on symptoms and joint structure in osteoarthritis. Of 414 subjects enrolled, 319 were postmenopausal women. Demographics and disease characteristics were similar at baseline in the glucosamine sulfate and placebo groups, both in the overall study population and in the subgroup of postmenopausal women.
After three years, postmenopausal women who received placebo had joint space narrowing on standing anteroposterior knee radiographs, but those who received glucosamine did not. Joint space change was +0.003 mm (95% confidence interval [CI], -0.09 to 0.11) in the glucosamine group and -0.33 mm (95% CI, -0.44 to -0.22) in the placebo group (P < .0001).
The glucosamine sulfate group also improved in the Western Ontario and McMaster Universities Osteoarthritis Index function scale (WOMAC) reflecting symptoms (-14.1%; 95% CI, -22.2 to -5.9), while there was a trend for worsening in the placebo group (5.4%; 95% CI, -4.9 to 15.7; P = .003 between groups).
A potential study limitation is that symptom relief might improve joint space narrowing as seen on standing knee x-rays, but the authors found only a poor relationship between symptom relief and prevention of joint space narrowing. They also found a significant difference in joint space preservation between patients receiving placebo or glucosamine when considering only those patients with symptomatic improvement.
"This analysis, focusing on a large cohort of postmenopausal women, demonstrated for the first time that a pharmacological intervention for osteoarthritis has a disease-modifying effect in this particular population, the most frequently affected by knee osteoarthritis," the authors write. "Glucosamine sulfate, therefore, is the first agent that meets the current requirements to be classified as a symptom- and structure-modifying drug in women with knee osteoarthritis."
> grinder wrote: >> Anyone know of any studies that show a benefit of taking Glucosamine and [quoted text clipped - 6 lines] > articles. There isn't much that is definitive, but there is some > articles showing some benefit.
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