Document Detail

Comparison of pharmacokinetics of glucosamine and synovial fluid levels following administration of glucosamine sulphate or glucosamine hydrochloride.
MedLine Citation:
PMID:  18295513     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To compare the pharmacokinetics of glucosamine and the synovial fluid levels attained following treatment with glucosamine sulphate or glucosamine hydrochloride in a large animal model at clinically relevant doses. METHODS: Eight adult female horses were used. Crystalline glucosamine sulphate (Dona) or glucosamine hydrochloride was administered at a dose of 20 mg/kg by either intravenous (i.v.) injection or nasogastric (n.g.) intubation. Plasma samples were collected before dosing and at 5, 15, 30, 60, 120, 360, 480 and 720 min after dosing. Synovial fluid samples were collected from the radiocarpal joints within 48 h before dosing and at 1, 6 and 12 h post-dosing. Glucosamine was assayed by Liquid Chromatography Electrospray Tandem Mass Spectrometry (LC-ESI/MS/MS). RESULTS: Plasma concentrations reached approximately 50 microg/mL after i.v. injection and approximately 1 microg/mL after n.g. administration of both types of glucosamine. The median oral bioavailability was 9.4% for glucosamine sulphate and 6.1% for glucosamine hydrochloride. Synovial fluid concentrations were significantly higher at 1 and 6 h following oral treatment with glucosamine sulphate compared to glucosamine hydrochloride. Twelve hours following oral administration, glucosamine levels in the plasma and the synovial fluid were still significantly higher than baseline for the glucosamine sulphate preparation, but not for the hydrochloride preparation. CONCLUSION: Following oral administration of a clinically recommended dose of glucosamine sulphate (Dona), significantly higher synovial fluid concentrations of glucosamine are attained, when compared to an equivalent dose of glucosamine hydrochloride. Whether this difference is translated into a therapeutic effect on the joint tissues remains to be elucidated.
M Meulyzer; P Vachon; F Beaudry; T Vinardell; H Richard; G Beauchamp; S Laverty
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-03-04
Journal Detail:
Title:  Osteoarthritis and cartilage / OARS, Osteoarthritis Research Society     Volume:  16     ISSN:  1522-9653     ISO Abbreviation:  Osteoarthr. Cartil.     Publication Date:  2008 Sep 
Date Detail:
Created Date:  2008-08-18     Completed Date:  2008-12-04     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9305697     Medline TA:  Osteoarthritis Cartilage     Country:  England    
Other Details:
Languages:  eng     Pagination:  973-9     Citation Subset:  IM    
Département des sciences cliniques, Faculté de Médecine Vétérinaire, Université de Montréal, St. Hyacinthe, Québec, Canada.
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MeSH Terms
Arthritis, Rheumatoid / drug therapy*
Cartilage, Articular / drug effects,  physiopathology
Chromatography, Liquid
Dose-Response Relationship, Drug
Drug Administration Routes
Glucosamine / administration & dosage,  pharmacokinetics*
Injections, Intravenous / veterinary
Intubation, Gastrointestinal / veterinary
Synovial Fluid / drug effects*,  metabolism,  physiology
Reg. No./Substance:

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