OBJECTIVE:To study the protective effects of total flavone from Prunus cerasifera fruits(PCE)on alcoholic liver disease(ALD)in rats,and provide experimental basis for developing new medicines for anti-ALD. METHODS:40 rats were ran-domly divided into normal group(distilled water),model group(distilled water),silibinin group [positive control,30 mg/(kg·d)] and PCE high-dose,low-dose groups [80,40 mg/(kg·d)],8 in each group. All rats were intragastrically administrated(10 mL/kg) every morning,once,for 6 weeks;meanwhile,except for normal group,rats in other groups received 50% alcohol(10 mL/kg) once intragastrically every afternoon to induce ALD model. After administration,heart,liver,spleen and other organ indexes,sub-cutaneous fat,brown fat,abdominal fat indexes were determined,as well as serum biochemical indexes [glutamate transaminase (ALT),aspartate aminotransferase(AST),total bilirubin(TBIL),direct bilirubin(DBIL),indirect bilirubin(IBIL),gamma-glu-tamyl transpeptidase(GGT),and total cholesterol(TC),triglyceride(TG),high-density lipoprotein(HDL),low-density lipopro-tein (LDL)] level and liver biochemical indexes [superoxide dismutase (SOD),malondialdehyde (MDA),glutathione peroxidase (GSH-Px),TC,TG] and TC,TG levels in feces;pathological changes of liver and kidney tissues were observed. RESULTS:Compared with normal group,heart,liver,spleen indexes,subcutaneous fat,abdominal fat indexes in model group were in-creased(P<0.05 or P<0.01),brain index and brown fat index were decreased(P<0.05);HDL level and HDL/TC ratio in serum were decreased,other serum indexes were increased(P<0.05 or P<0.01);SOD,GSH-Px levels in liver tissue were decreased, other above-mentioned liver biochemical indexes were increased(P<0.01);TC,TG levels in feces were increased(P<0.01);liv-er and kidney showed obvious lesions. Compared with model group,the above-mentioned indexes in silibinin group and PCE high-dose group were significantly improved (P<0.05 or P<0.01);ALT,AST in serum and MDA level in liver tissue in PCE low-dose group were significantly decreased(P<0.01),and SOD,GSH-Px levels in liver tissue were significantly increased(P<0.05);lesion degree of liver and kidney and lipid accumulation in liver were reduced in administration groups. CONCLUSIONS:PCE may play a role in anti-ALD by anti-oxidation,promoting liver cell regeneration and regulating lipid metabolism.%目的:研究紫叶李果实总黄酮(PCE)对酒精性肝损伤(ALD)大鼠的保护作用机制,为将其开发为治疗ALD的新药提供实验依据.方法:将40只大鼠随机分为正常组(蒸馏水)、模型组(蒸馏水)、水飞蓟宾组[阳性对照,30 mg/(kg·d)]和PCE高、低剂量组[80、40 mg/(kg·d)],每组8只.每天上午ig给药(10 mL/kg)1次,持续6周;给药同时,除正常组外其余各组大鼠每天下午ig 50%乙醇(10 mL/kg)1次诱导ALD模型.给药结束后,测定大鼠心、肝、脾等脏器指数和皮下脂肪、棕色脂肪、腹腔脂肪指数;测定谷氨酸转氨酶(ALT)、天冬氨酸转氨酶(AST)、总胆红素(TBIL)、直接胆红素(DBIL)、间接胆红素(IBIL)、γ-谷氨酰转肽酶(GGT)以及总胆固醇(TC)、三酰甘油(TG)、高密度脂蛋白(HDL)、低密度脂蛋白(LDL)等血清生化指标水平;测定肝组织中超氧化物歧化酶(SOD)、丙二醛(MDA)和谷胱甘肽过氧化酶(GSH-Px)、TC、TG以及粪便中TC、TG等生化指标水平;观察大鼠肝、肾组织病理变化.结果:与正常组比较,模型组大鼠肝、脾、肾指数和皮下脂肪、腹腔脂肪指数升高(P<0.05或P<0.01),脑指数和棕色脂肪指数降低(P<0.05);血清中HDL水平和HDL/TC比值降低,其余血清指标均升高(P<0.05或P<0.01);肝组织中SOD、GSH-Px水平降低,其余肝组织生化指标均升高(P<0.01);粪便中TC、TG水平升高(P<0.01);肝、肾均发生明显病变.与模型组比较,水飞蓟宾组和PCE高剂量组大鼠上述指标均显著改善(P<0.05或P<0.01);PCE低剂量组大鼠血清中ALT、AST和肝组织中MDA水平显著降低(P<0.01),肝组织中SOD和GSH-Px水平显著升高(P<0.05);各给药组肝、肾病变程度及肝中脂质聚积减轻.结论:PCE可能通过抗氧化、促进肝细胞再生、调节脂质代谢等方面发挥其改善ALD的作用.
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