Abstract
Arthritis is a joint disorder where the joint damage is associated with elevated levels of inflammatory mediators and reactive oxygen species (ROS). The inflammatory hyperalgesia associated with arthritis has been shown to be attenuated by anti-hyperlipidemic drug, atorvastatin. The present study was carried out to evaluate the effect of atorvastatin on joint inflammation and associated oxidative stress markers in a rat model where arthritis was induced by intra-articular injection of 0.1 ml of 0.1% Freund's Complete Adjuvant (FCA). Atorvastatin (10 mg and 50 mg/kg) and diclofenac (5 mg/kg) were administered orally, daily during the study period of 4 days and their effect on joint inflammation was evaluated by measuring joint diameter, levels of glutathione (GSH), thiobarbituric acid reactive substances (TBARS), activity of super oxide dismutase (SOD) and tissue histology. Atorvastatin produced a dose-dependent reduction in joint inflammation that was associated with normalization of levels of oxidative stress markers and tissue histology and its effect was found to be comparable to that of diclofenac.
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