[Mechanism studies on hepatotoxicity of rats induced by fructus toosendan].

OBJECTIVE: To study the effects on SOD, MDA, gamma-GT, GSH-Px and inflammatory factor (TNF-alpha, NF-kappaB, ICAM-1) in rats that induced by fructus toosendan, and to search for the hepatotoxicity mechanism of rats that induced by fructus toosendan. METHOD: The SD rats were given fructus toosendan 120 g x kg(-1) by orally for 45 days, then take the liver tissue of control and fructus toosendan group to prepare liver homogenate. The activities of SOD, the content of MDA, the ratio of SOD and MDA, the content of gamma-GT and glutathione peroxidase (GSH-Px) were detected according to the methods of kit. The tumor necosis factor-alpha (TNF-alpha) was detected by ABC-ELISA. The expression of NF-kappaB p65 and ICAM-1 were detected by immunohistochemistry. RESULT: The rats were given fructus toosendan 120 g x kg(-1) by orally for 45days, the SOD and GSH-Px activities in liver tissue decreased, the content of MDA increased, the ratio of SOD and MDA decreased, the content of gamma-GT and TNF-alpha, the masculine expression of NF-kappaB p65 and ICAM-1 increased. CONCLUSION: After the rats were given fructus toosendan, the liver can be damaged obviously, and the mechanism of hepatotoxicity perhaps related to free radical and inflammatory factor.