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| Name | N-Acetyl-D-glucosamine | ||||||||||||||||||||||||||||||||||||
| Accession Number | DB00141 (NUTR00040) | ||||||||||||||||||||||||||||||||||||
| Type | small molecule | ||||||||||||||||||||||||||||||||||||
| Groups | approved, nutraceutical | ||||||||||||||||||||||||||||||||||||
| Description | The N-acetyl derivative of glucosamine. [PubChem] |
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| Structure |
Download: MOL | SDF | SMILES | InChI Display: 2D Structure | 3D Structure |
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| Synonyms |
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| Synonyms |
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| Salts | Not Available | ||||||||||||||||||||||||||||||||||||
| Brand names |
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| Brand mixtures | Not Available | ||||||||||||||||||||||||||||||||||||
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| CAS number | 7512-17-6 | ||||||||||||||||||||||||||||||||||||
| Weight |
Average: 221.2078 Monoisotopic: 221.089937217 |
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| Chemical Formula | C8H15NO6 | ||||||||||||||||||||||||||||||||||||
| InChI Key | InChIKey=MBLBDJOUHNCFQT-LXGUWJNJSA-N | ||||||||||||||||||||||||||||||||||||
| InChI |
InChI=1S/C8H15NO6/c1-4(12)9-5(2-10)7(14)8(15)6(13)3-11/h2,5-8,11,13-15H,3H2,1H3,(H,9,12)/t5-,6+,7+,8+/m0/s1
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| IUPAC Name |
N-[(2R,3R,4S,5R)-3,4,5,6-tetrahydroxy-1-oxohexan-2-yl]acetamide
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| SMILES |
[H]C(=O)[C@H](NC(C)=O)[C@@H](O)[C@H](O)[C@H](O)CO
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| Mass Spec | Not Available | ||||||||||||||||||||||||||||||||||||
| Taxonomy | |||||||||||||||||||||||||||||||||||||
| Kingdom | Not Available | ||||||||||||||||||||||||||||||||||||
| Classes | Not Available | ||||||||||||||||||||||||||||||||||||
| Substructures | Not Available | ||||||||||||||||||||||||||||||||||||
| Pharmacology | |||||||||||||||||||||||||||||||||||||
| Indication | For the treatment and prevention of osteoarthritis, by itself or in combination with chondroitin sulfate. | ||||||||||||||||||||||||||||||||||||
| Pharmacodynamics | Not Available | ||||||||||||||||||||||||||||||||||||
| Mechanism of action | The mechanism of action in relieving arthritic pain and in repair of cartilage is a matter of speculation. Biochemically, glucosamine is involved in glycoprotein metabolism. Glycoproteins, known as proteoglycans, form the ground substance in the extra-cellular matrix of connective tissue. Proteoglycans are polyanionic substances of high-molecular weight and contain many different types of heteropolysaccharide side-chains covalently linked to a polypeptide-chain backbone. These polysaccharides make up to 95% of the proteoglycan structure. In fact, chemically, proteoglycans resemble polysaccharides more than they do proteins. The polysaccharide groups in proteoglycans are called glycosaminoglycans (GAGs). GAGs include hyaluronic acid, chondroitin sulfate, dermatan sulfate, keratan sulfate, heparin and heparan sulfate. All of the GAGs contain derivatives of glucosamine or galactosamine. Glucosamine derivatives are found in hyaluronic acid, keratan sulfate and heparan sulfate. Chondroitin sulfate contains derivatives of galactosamine. The glucosamine-containing glycosaminoglycan hyaluronic acid is vital for the function of articular cartilage. GAG chains are fundamental components of aggrecan found in articular cartilage. Aggrecan confers upon articular cartilage shock-absorbing properties. It does this by providing cartilage with a swelling pressure that is restrained by the tensile forces of collagen fibers. This balance confers upon articular cartilage the deformable resilience vital to its function. In the early stages of degenerative joint disease, aggrecan biosynthesis is increased. However, in later stages, aggrecan synthesis is decreased, leading eventually to the loss of cartilage resiliency and to most of the symptoms that accompany osteoarthritis. During the progression of osteoarthritis, exogenous glucosamine may have a beneficial role. It is known that, in vitro, chondrocytes do synthesize more aggregan when the culture medium is supplemented with glucosamine. N-acetylglucosamine is found to be less effective in these in vitro studies. Glucosamine has also been found to have antioxidant activity and to be beneficial in animal models of experimental arthritis. The counter anion of the glucosamine salt (i.e. chloride or sulfate) is unlikely to play any role in the action or pharmacokinetics of glucosamine. Further, the sulfate in glucosamine sulfate supplements should not be confused with the glucosamine sulfate found in such GAGs as keratan sulfate and heparan sulfate. In the case of the supplement, sulfate is the anion of the salt. In the case of the above GAGs, sulfate is present as an ester. Also, there is no glucosamine sulfate in chondroitin sulfate (source: PDRhealth). | ||||||||||||||||||||||||||||||||||||
| Absorption | Approximately 90% of orally administered glucosamine (salt form) gets absorbed from the small intestine. | ||||||||||||||||||||||||||||||||||||
| Volume of distribution | Not Available | ||||||||||||||||||||||||||||||||||||
| Protein binding | Not Available | ||||||||||||||||||||||||||||||||||||
| Metabolism | A significant fraction of ingested glucosamine is catabolized by first-pass metabolism in the liver. | ||||||||||||||||||||||||||||||||||||
| Route of elimination | Not Available | ||||||||||||||||||||||||||||||||||||
| Half life | Not Available | ||||||||||||||||||||||||||||||||||||
| Clearance | Not Available | ||||||||||||||||||||||||||||||||||||
| Toxicity | Mouse, intravenous LD50 is 4170 mg/kg. Side effects that have been reported are mainly mild gastrointestinal complaints such as heartburn, epigastric distress and diarrhea. No allergic reactions have been reported including sulfa-allergic reactions to glucosamine sulfate. | ||||||||||||||||||||||||||||||||||||
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| Pathways | Not Available | ||||||||||||||||||||||||||||||||||||
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| Manufacturers | Not Available | ||||||||||||||||||||||||||||||||||||
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| Dosage forms | Not Available | ||||||||||||||||||||||||||||||||||||
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| Patents | Not Available | ||||||||||||||||||||||||||||||||||||
| Properties | |||||||||||||||||||||||||||||||||||||
| State | solid | ||||||||||||||||||||||||||||||||||||
| Melting point | 205 oC | ||||||||||||||||||||||||||||||||||||
| Experimental Properties |
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| Synthesis Reference | Not Available | ||||||||||||||||||||||||||||||||||||
| General Reference | Not Available | ||||||||||||||||||||||||||||||||||||
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| AHFS Codes | Not Available | ||||||||||||||||||||||||||||||||||||
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| FDA label | Not Available | ||||||||||||||||||||||||||||||||||||
| MSDS | show (73.5 KB) | ||||||||||||||||||||||||||||||||||||
| Interactions | |||||||||||||||||||||||||||||||||||||
| Drug Interactions | Not Available | ||||||||||||||||||||||||||||||||||||
| Food Interactions | Not Available | ||||||||||||||||||||||||||||||||||||
| Targets |
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1. Beta-1,4-galactosyltransferase 3 Pharmacological action: unknownResponsible for the synthesis of complex-type N-linked oligosaccharides in many glycoproteins as well as the carbohydrate moieties of glycolipids Organism class: humanUniProt ID: O60512 ![]() Gene: B4GALT3 ![]() Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References: 2. Beta-1,4-galactosyltransferase 4 Pharmacological action: unknownResponsible for the synthesis of complex-type N-linked oligosaccharides in many glycoproteins as well as the carbohydrate moieties of glycolipids Organism class: humanUniProt ID: O60513 ![]() Gene: B4GALT4 ![]() Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
3. Beta-1,4-galactosyltransferase 2 Pharmacological action: unknownResponsible for the synthesis of complex-type N-linked oligosaccharides in many glycoproteins as well as the carbohydrate moieties of glycolipids. Can produce lactose Organism class: humanUniProt ID: O60909 ![]() Gene: B4GALT2 ![]() Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
Pharmacological action: unknown
Converts endogenous N-acetylglucosamine (GlcNAc), a major component of complex carbohydrates, from lysosomal degradation or nutritional sources into GlcNAc 6-phosphate. Also has ManNAc kinase activity Organism class: humanUniProt ID: Q9UJ70 ![]() Gene: NAGK ![]() Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
5. N-acetylglucosamine-1-phosphodiester alpha-N-acetylglucosaminidase Pharmacological action: unknownCatalyzes the second step in the formation of the mannose 6-phosphate targeting signal on lysosomal enzyme oligosaccharides by removing GlcNAc residues from GlcNAc-alpha-P- mannose moieties, which are formed in the first step Organism class: humanUniProt ID: Q9UK23 ![]() Gene: NAGPA ![]() Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
6. Alpha-N-acetylglucosaminidase Pharmacological action: unknownActions: activator Involved in the degradation of heparan sulfate Organism class: humanUniProt ID: P54802 ![]() Gene: NAGLU ![]() Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
7. N-acylglucosamine 2-epimerase Pharmacological action: unknownCatalyzes the interconversion of N-acetylglucosamine to N-acetylmannosamine. Binds to renin forming a protein complex called high molecular weight (HMW) renin and inhibits renin activity Organism class: humanUniProt ID: P51606 ![]() Gene: RENBP ![]() Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
8. Beta-1,4-galactosyltransferase 1 Pharmacological action: unknownThe cell surface form functions as a recognition molecule during a variety of cell to cell and cell to matrix interactions, as those occurring during development and egg fertilization, by binding to specific oligosaccharide ligands on opposing cells or in the extracellular matrix Organism class: humanUniProt ID: P15291 ![]() Gene: B4GALT1 ![]() Protein Sequence: FASTA Gene Sequence: FASTA SNPs: SNPJam Report ![]() References:
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