Attenuation of Neutrophil Infiltration and Proinflammatory Cytokines byCissus quadrangularis

Abstract

Reactive oxygen species, neutrophil infiltration and pro-inflammatory cytokines play an important role in the pathogenesis of gastric ulcers caused by aspirin. The present study demonstrates the healing effect of Cissus quadrangularis extract (CQE) through inhibitory action on generation of lipid peroxidation, proinflammatory cytokines and neutrophil infiltration. The concentration of malondialdehye (MDA), protein carbonyl content, conjugated dienes, mucosal (SH) sulphydryls, uric acid, tumor necrosis factor-alpha (TNF-cc), and activities of myelo-peroxidase (MPO), xanthine oxidase (XO) and antioxidative enzymes were determined in the gastric mucosa. Administration of CQE significantly attenuated the gastric lesions induced by aspirin and this was accompanied by the rise in uric acid, antioxidative enzymes, SH groups, and a significant decrease in lipid peroxidase, TNF-oc, MPO and XO activities. These findings suggest that the significant gastroprotective activity could be mediated by the antioxidant activity as well as by the attenuation of oxidative mechanism and proinflammatory cytokines.