大鼠酒精性肝纤维化复合模型的建立

目的:采用复合因素制备大鼠酒精性肝纤维化模型。方法:Wistar雄性大鼠随机分为空白对照组、酒精性肝纤维化模型组和微量CCl4处理组。酒精性肝纤维化模型组大鼠予以喂食酒精、玉米油、吡唑,结合微量CCl4腹腔注射造模。微量CCl4处理组仅予以微量CCl4腹腔注射。观察各组大鼠血清丙氨酸氨基转移酶(alanine aminotransferase,ALT)、天门冬氨酸氨基转移酶(aspartate aminotransferase,AST)、γ谷氨酰转肽酶(gamma-glutamyltransferase,γ-GT)水平和肝组织病理学的变化。结果:造模第12周,成功建立大鼠酒精性肝纤维化模型。在造模期间,肝脏组织病理学依次表现为酒精性脂肪肝、肝炎、肝纤维化。酒精性肝纤维化模型组大鼠肝/体比值,血清ALT、AST及γ-GT水平与正常对照组比较,差异均有统计学意义。结论:酒精灌胃结合微量CCl4腹腔注射制备酒精性肝纤维化动物模型,具有模型稳定、成功率高的特点,并可提供不同阶段酒精性肝病的实验模型。

Establishment of a rat model of alcoholic liver fibrosis induced by complex factors

OBJECTIVE: To establish a model of alcoholic liver fibrosis (ALF) in rats induced by complex factors. METHODS: Forty-seven healthy male rats were divided into three groups: normal control group (n=12), minor CCl4 group (n=12) and complex factors group (n=27). The rats in the complex factors group were fed a complex diet including alcohol, corn oil and pyrazole, and administered with intraperitoneal injection of minor CCl4 to induce ALF. During induction process, the histopathological changes of liver tissue and the values of liver-to-body weight ratio were both observed regularly. The serum levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST) and gamma-glutamyltransferase (gamma-GT) in these three groups were all examined at the 12th week of the induction process. RESULTS: At the 12th week of the induction process, the model of ALF induced by complex factors was successfully established in rats, and the histopathological presentations showed alcoholic fatty liver, hepatitis and liver fibrosis in a sequence along with the induction process. The value of liver-to-body weight ratio and the serum levels of ALT, AST and gamma-GT of rats in the complex factors group were all significantly different from those in the other two groups. CONCLUSION: It is a steady and effective way to induce ALF in rats with complex diet and minor CCI4 injection.