Topic
Glucosamine
About: Glucosamine is a research topic. Over the lifetime, 3826 publications have been published within this topic receiving 108783 citations. The topic is also known as: 2-Amino-2-deoxy-D-glucose & Chitosamine.
Papers published on a yearly basis
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Papers
University of Utah1, Veterans Health Administration2, National Institutes of Health3, University of Nebraska Medical Center4, Case Western Reserve University5, Indiana University6, New York University7, Cedars-Sinai Medical Center8, University of California, San Francisco9, Presbyterian Hospital of Dallas10, University of Alabama11, University of Pennsylvania12, University of Pittsburgh13, Virginia Mason Medical Center14, University of Arizona15, Northwestern University16, University of California, Los Angeles17
TL;DR: The GAIT trial as discussed by the authors evaluated the efficacy and safety of glucosamine and chondroitin sulfate as a treatment for knee pain from osteoarthritis in 1583 patients.
Abstract: Background Glucosamine and chondroitin sulfate are used to treat osteoarthritis. The multicenter, double-blind, placebo- and celecoxib-controlled Glucosamine/chondroitin Arthritis Intervention Trial (GAIT) evaluated their efficacy and safety as a treatment for knee pain from osteoarthritis. Methods We randomly assigned 1583 patients with symptomatic knee osteoarthritis to receive 1500 mg of glucosamine daily, 1200 mg of chondroitin sulfate daily, both glucosamine and chondroitin sulfate, 200 mg of celecoxib daily, or placebo for 24 weeks. Up to 4000 mg of acetaminophen daily was allowed as rescue analgesia. Assignment was stratified according to the severity of knee pain (mild [N=1229] vs. moderate to severe [N=354]). The primary outcome measure was a 20 percent decrease in knee pain from baseline to week 24. Results The mean age of the patients was 59 years, and 64 percent were women. Overall, glucosamine and chondroitin sulfate were not significantly better than placebo in reducing knee pain by 20 perce...
1,199 citations
TL;DR: It is indicated that a unique metabolic pathway exists in adipocytes that mediates desensitization of the insulin-responsive GTS, and that an early step in this pathway involves the conversion of fructose 6-phosphate to glucosamine 6- phosphate by the first and rate-limiting enzyme of the hexosamine pathway, glutamine:fructose-6-ph phosphate amidotransferase.
1,077 citations
TL;DR: Chinese hamster ovary cell mutants defective in the biosynthesis of glycosaminoglycans are obtained by screening replicate colonies immobilized on polyester cloth and provide genetic evidence that the xylosyltransferase assayed in vitro is responsible for the initiation of chondroitin sulfate and heparan sulfate biosynthesis in vivo.
Abstract: We have obtained Chinese hamster ovary cell mutants defective in the biosynthesis of glycosaminoglycans by screening replicate colonies immobilized on polyester cloth. Depending upon the strain, the mutants accumulated less 35S-labeled glycosaminoglycans per microgram of cell protein by a factor of 6-60 compared to the wild type. Some of the mutants incorporated [6-3H]glucosamine into glycosaminoglycans to the same extent as the wild type, suggesting that sulfate addition was specifically altered. In contrast, five strains failed to generate 3H-labeled glycosaminoglycans normally. In four of these, the initiation of glycosaminoglycan assembly was specifically altered, since the addition of p-nitrophenyl-beta-xyloside restored sulfation to normal. Enzymatic assay of the xylosyltransferase in extracts prepared from these mutants revealed that one of the strains, S745, contained less enzyme activity by a factor of 15 than the wild type. This mutant provides genetic evidence that the xylosyltransferase assayed in vitro is responsible for the initiation of chondroitin sulfate and heparan sulfate biosynthesis in vivo.
643 citations
TL;DR: In this paper, a method was developed to determine the aldononitrile acetate derivatives of the four amino sugars simultaneously in the 6 m HCl hydrolysates of soil samples by means of high resolution gas liquid chromatography.
Abstract: Muramic acid, glucosamine, mannosamine and galactosamine in soils may be useful for elucidating the microbial origin of soil organic nitrogen. Therefore, a method was developed to determine the aldononitrile acetate derivatives of the four amino sugars simultaneously in the 6 m HCl hydrolysates of soil samples by means of high resolution gas liquid chromatography. This method was sensitive enough to detect less than 10 μg muramic acid ml−1 and less than 20 μg ml−1 of the other three amino sugars. The maximum release of amino sugars was found after 6 to 8 h hydrolysis at 105°C. Impurities in the acidic hydrolysates were removed simply by neutralisation with KOH solution. The recovery of amino sugars after hydrolysis and purification was more than 90% on average. The method was applied to determine amino sugars in eight soils with different properties. The coefficients of variation averaged 6.1% for glucosamine and galactosamine and 10.9% for muramic acid and mannosamine.
642 citations
TL;DR: The purification, by affinity chromatography, of an hepatic protein which retains the characteristic binding properties associated with the membranes is described, which indicates a high degree of aggregation in the final, water-soluble preparation.
608 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2026 | 1 |
| 2025 | 34 |
| 2024 | 83 |
| 2023 | 98 |
| 2022 | 135 |
| 2021 | 56 |