Title : Minocycline inhibits the production of inducible nitric oxide synthase in articular chondrocytes.

Pub. Date : 2001 Feb

PMID : 11246672






4 Functional Relationships(s)
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1 OBJECTIVE: To determine the in vitro effects of tetracyclines and nonsteroidal antiiflammatory drugs on interleukin 1alpha (IL-1alpha) induced NO production and biosynthesis of inducible NO synthase (iNOS) by articular chondrocytes. Tetracyclines nitric oxide synthase 2 Bos taurus
2 RESULTS: Minocycline dose dependently reduced IL-1 stimulated NO production by inhibition of the mRNA expression (IC50 = 69.9 microM) and protein synthesis (IC50 = 37.11 microM) of iNOS. Minocycline nitric oxide synthase 2 Bos taurus
3 Diclofenac-Na at a concentration of 10 microM only weakly reduced nitrite accumulation and mRNA expression of iNOS. Diclofenac nitric oxide synthase 2 Bos taurus
4 CONCLUSION: Inhibition of iNOS in articular chondrocytes may be a new mechanism by which minocycline could exert its beneficial effects in the treatment of joint diseases. Minocycline nitric oxide synthase 2 Bos taurus