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Suppressive effect of Withania somnifera root powder on experimental gouty arthritis: An in vivo and in vitro study.

Rasool M, Varalakshmi P

Faculty of Biosciences, School of Bioengineering and Biosciences, Vellore Institute of Technology (Deemed University), Vellore 632014, Tamil Nadu, India. mkr474@rediffmail.com

The effect of Withania somnifera L. Dunal root powder on paw volume and serum lysosomal enzyme activities was investigated in monosodium urate crystal-induced rats. The levels of beta-glucuronidase and lactate dehydrogenase were also measured in monosodium urate crystal incubated polymorphonuclear leucocytes (PMNL). A significant increase in the level of paw volume and serum lysosomal enzymes was observed in monosodium urate crystal-induced rats. The increased beta-glucuronidase and lactate dehydrogenase level were observed in untreated monosodium urate crystal incubated polymorphonuclear leucocytes. On treatment with the W. somnifera root powder (500/1000 mg/kg body weight), the above changes were reverted back to near normal levels. W. somnifera also showed potent analgesic and antipyretic effect with the absence of gastric damage at different dose levels in experimental rats. For comparison purpose, non-steroidal anti-inflammatory drug (NSAID) indomethacin was used as a standard. These results provide evidence for the suppressive effect of W. somnifera root powder by retarding amplification and propagation of the inflammatory response without causing any gastric damage.

Published 27 November 2006 in Chem Biol Interact, 164(3): 174-80.
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