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Liver damage results from a variety of insults, including hepatitis and chemical toxicity from alcohol, drugs and other toxins. The present study evaluated the hepatoprotective effects and potential mechanisms of action of the Traditional Chinese Medicine Pien Tze Huang Gan Bao (GB) in a rat model of carbon tetrachloride (CCl 4 )-induced liver injury. Sixty male Sprague-Dawley rats were randomly divided into six different groups: i) Control, ii) CCl 4 injury model and groups treated with iii) silymarin as a positive drug control, iv) 150 mg/kg GB, v) 300 mg/kg GB and vi) 600 mg/kg GB. Control rats received no treatment, while the remaining ones were intraperitoneally injected with CCl 4 (2 ml/kg) to induce acute liver disease. Silymarin or GB was orally administered prior to CCl 4 treatment in various treatment groups for 7 days. Animals were sacrificed 24 h post-CCl 4 injection. It was revealed that GB significantly reduced serum aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, gamma glutamyl transpeptidase and total bilirubin levels in the serum induced by CCl 4 . BG also prevented CCl 4 -induced changes in liver tissues, as revealed by histopathological analysis. CCl 4 -induced reductions in endogenous liver antioxidant enzyme activities of superoxide dismutase, glutathione and glutathione peroxidase as well as increases in malondialdehyde and thiobarbituric acid reactive substances were inhibited by GB treatment. Activated NF-κB in liver tissues was also significantly increased by CCl 4 , which was attenuated by GB as indicated by immunohistochemical and PCR analysis. Furthermore, CCl 4 -mediated increases in the inflammatory factors tumor necrosis factor-alpha and interleukin-1β secretion into the serum and their expression in liver tissues were reversed following GB treatment, as revealed by ELISA and PCR, respectively. These findings suggested that GB protects against CCl 4 -induced hepatic injury, inflammation and oxidative damage in rats and may be useful in future clinical application of liver injury and disease.

Pien Tze Huang Gan Bao ameliorates carbon tetrachloride-induced hepatic injury, oxidative stress and inflammation in rats