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Related Concept Videos

Glycosaminoglycans01:23

Glycosaminoglycans

Glycosaminoglycans (GAGs), also known as mucopolysaccharides, are long and linear polymers comprising of specific repeating disaccharides - the amino sugar that can be N-acetylglucosamine or N-acetylgalactosamine, and a uronic acid that is usually glucuronic acid or iduronic acid.
GAGS are found in the extracellular matrix of vertebrates, invertebrates, and bacteria. Due to their polar nature they attract water, and serve as excellent lubricants or shock absorbers in an animal body.
Hyaluronic...
Proteoglycans01:05

Proteoglycans

Glycans, a class of complex heterogeneous molecules, can be covalently attached to proteins to form glycosylated proteins that regulate various physiological and pathological processes. Glycosylated proteins or glycoproteins comprise N-linked and O-linked oligosaccharides. O-glycosylation is the most common type of protein glycosylation. Here, glycans attach to the oxygen atom of the hydroxyl groups of Serine or Threonine residues. O-linked glycosylation occurs later in protein processing,...
Phase II Reactions: Glucuronidation01:24

Phase II Reactions: Glucuronidation

Glucuronidation, a pivotal phase II biotransformation process, involves the coupling of glucuronic acid to a drug or xenobiotic. Given its widespread occurrence and critical role in drug metabolism, it's considered the most crucial phase II reaction. It enhances the water solubility of substances, aiding their expulsion from the body. The driving force behind these reactions is a group of enzymes known as UDP-glucuronosyltransferases (UGTs). UGTs facilitate the transfer of a glucuronic acid...
Oral Hypoglycemic Agents: α-Glucosidase Inhibitors01:19

Oral Hypoglycemic Agents: α-Glucosidase Inhibitors

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Acarbose and miglitol are typically...

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Related Experiment Video

Updated: Jul 2, 2026

Ameliorating Osteoarthritis in Mice Using Silver Nanoparticles
05:50

Ameliorating Osteoarthritis in Mice Using Silver Nanoparticles

Published on: June 2, 2023

Glucosamine.

Stephen Dahmer1, Robert M Schiller

  • 1Beth Israel Department of Family Medicine, Beth Israel Center for Health and Healing, New York, New York 10016, USA. stephendahmermd@yahoo.com

American Family Physician
|September 2, 2008
PubMed
Summary
This summary is machine-generated.

Glucosamine, a popular joint health supplement, has not been definitively proven effective for osteoarthritis. However, it shows few side effects, making a short trial reasonable for some patients.

Related Experiment Videos

Last Updated: Jul 2, 2026

Ameliorating Osteoarthritis in Mice Using Silver Nanoparticles
05:50

Ameliorating Osteoarthritis in Mice Using Silver Nanoparticles

Published on: June 2, 2023

Area of Science:

  • Dietary Supplements
  • Osteoarthritis Treatment
  • Clinical Trials

Background:

  • Glucosamine is a widely used dietary supplement in the US.
  • Most research has investigated its efficacy for knee osteoarthritis.
  • Adverse effects are generally minor and uncommon.

Purpose of the Study:

  • To evaluate the effectiveness of glucosamine for osteoarthritis.
  • To review reported adverse effects and drug interactions.
  • To provide guidance on the use of glucosamine in clinical practice.

Main Methods:

  • Review of clinical trials, including the large-scale Glucosamine/chondroitin Arthritis Intervention Trial (GAIT).
  • Analysis of reported adverse events and supplement-drug interactions.
  • Assessment of evidence for and against glucosamine use.

Main Results:

  • The largest study (GAIT) did not confirm glucosamine's effectiveness for osteoarthritis.
  • No significant supplement-drug interactions have been reported.
  • Adverse effects are generally uncommon and minor.

Conclusions:

  • There is conflicting evidence regarding glucosamine's efficacy for osteoarthritis.
  • A 60-day trial of glucosamine sulfate may be reasonable for patients seeking alternatives.
  • Caution is advised for patients with shellfish allergies, asthma, or those on diabetes medications or warfarin.