The purpose of this report is to present the results of analysis of actual glucosamine and/or chondroitin contents of several such products in the market place and to determine if they significantly deviate from their label claim. A total of fourteen products containing glucosamine sulfate and nine products containing chondroitin sulfate were evaluated. The amounts of glucosamine and chondroiti...

The purpose of this report is to present the results of analysis of actual glucosamine and/or chondroitin contents of several such products in the market place and to determine if they significantly deviate from their label claim. A total of fourteen products containing glucosamine sulfate and nine products containing chondroitin sulfate were evaluated. The amounts of glucosamine and chondroiti...

The reaction of diaza-5H-benzo[a]phenoxazin-5-one and 5H-benzo[a]phenoxazin-5-one with various phenols catalyzed by Pd/t-BuXPhos/K3PO4 system gave previously unknown ether derivatives (7a-f and 8a-f) in good yields. UV-visible, FTIR, and 1H NMR data were used to confirm structures of the synthesized compounds. The parent compounds and the derivatives were screened in-silico for their drug-liken...

ABSTRACT Chitin and its derivatives have valuable potential applications in various fields that include medicine, agriculture, food industries. Paenibacillus sp. str. FPU-7 is one of the most potent chitin-degrading bacteria identified. This review introduces chitin degradation system P. FPU-7. In addition to extracellular chitinases, uses a unique multimodular chitinase (ChiW) hydrolyze oligos...

BC3H-1 myocytes were cultured in the presence of [3H]inositol or [3H]glucosamine during their entire growth cycle to ensure that all lipids containing inositol and glucosamine were labelled to isotopic equilibrium or maximal specific radioactivity. After such labelling, a lipid (or group of lipids), which was labelled with both inositol and glucosamine, was observed to migrate between phosphati...

Using a quantitative assay for measuring chemotaxis, we tested a variety of sugars and sugar derivatives for their ability to attract Escherichia coli bacteria. The most effective attractants, i.e., those that have thresholds near 10(-5) M or below, are N-acetyl-d-glucosamine, 6-deoxy-d-glucose, d-fructose, d-fucose, 1-d-glycerol-beta-d-galactoside, galactitol, d-galactose, d-glucosamine, d-glu...

Keratosulfate was first isolated from bovine cornea in 1953 by Meyer et al. (2) and its repeating unit structure determined to be (1 3 3)P-n-galactopyranosyl-(1 + 4)-2-acetamido-2-deoxy-Po-glucopyranosyl 6-sulfate (3). This compound was later reported present also in human cartilage (4) and in nucleus pulposus (5). u-Glucosamine was characterized as the hydrochloride and n-galactose as the or-m...