Objective To observe the effects of total flavone from Litchi chinensis Sonn(TFL) on rats with hepatic fibrosis and research the possible mechanisms in it. Methods Rat hepatic fibrosis model was induced by intraperitoneal injection of dimethylni-trosamine CDMN). Meanwhile TFL was orally given to fibrosis rats and these rats constituted the medicine group, and colchicine was used as a positive control. The degrees of fibrosis were evaluated by H. E and Masson straining,and serum trail levels of aspar-tate aminotransferase (AST) and alanine aminotransferase (ALT) were detected. The activity of superoxide dismutase (SOD) and content of malondialdehyde(MDA) in liver tissues were detected. The expression levels of NF-kB in liver tissue were assessed by S-P immunohistochemical staining. Results Compared with the hepatic fibrosis model group, the levels of AST,ALT in serum trail and MDA in liver tissues of the TFL medicine group decreased significantly(P＜0.05) while the levels of SOD increased signifi-cantly(P＜0. 05). TFL could inhibit the expression of NF-kB in the liver tissues significantly (P＜0.05) and alleviate the hepatic fibrosis in rats (P＜C0. 05). Conclusion TEL has an anti-hepatic fibrosis action and the mechanisms possibly involve effectively alleviating lipid peroxidation and inhibiting the expression of NF-kB.%目的 观察荔枝核总黄酮(TFL)抗大鼠肝纤维化作用,并探讨其中的可能机制.方法以二甲基亚硝胺(DMN) 腹腔注射制作大鼠肝纤维化模型;造模同时TFL给药组以TFL灌胃给药,秋水仙碱为阳性对照组,苏木素-伊红(HE)染色、马松染色观察大鼠肝纤维化程度,检测血清天冬氨酸氨基转移酶(AST)、丙氨酸氨基转移酶(ALT) 水平,检测肝组织丙二醛(MDA)、超氧化物歧化酶(SOD)含量,免疫组化检测肝组织核转录因子-κB(NF-κB) 的表达.结果 与模型组比较TFL给药组血清AST、ALT水平及肝组织MDA含量明显降低(P<0.05),SOD含量明显升高(P<0.05);TFL可明显抑制肝组织NF-κB的表达(P<0.05),改善大鼠肝纤维化程度(P<0.05).结论 TFL具有显著的抗肝纤维化作用,减轻机体脂质过氧化反应及抑制NF-κB 的表达可能参与了其抗肝纤维化作用的机制.
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