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Establishment of early experimental model for liver injury of alcoholism in rats |
CHEN Huan1 LIU Yan-ling1 LIU Xue-rui1 CAI Si-yu1 WANG Jia-min1 LIU Lan2▲ |
1.Basic Medicine Department,Southwest Medical University,Sichuan Province,Luzhou 646000,China;
2.Department of Cell Biology and Genetics,Southwest Medical University,Sichuan Province,Luzhou 646000,China |
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Abstract ObjectiveTo explore the method of establishing a model of early alcoholic liver disease (ALD)in rats in order to provide an ideal animal model for studying the molecular mechanism of early alcoholic liver injury.MethodsTwenty-four male SD rats were randomly divided into experimental group (16 rats)and control group (8 rats).In the control group,SD rats were fed with tap water.In the experimental group,SD rats were fed with alcohol of which the concentration of 7%-56%increased gradually for 12 weeks.During the experiment,the quantity of the fodder and the value of drinking were recorded everyday.Then the weight was weighed every week.24 and 12 hours before rats in experimental group were killed,they were treated with acute lavages with 56%alcohol.The activities of alanine aminotransferase (ALT),spartate aminotransferase (AST),riglyceride (TG) and total cholesterol (TC) in serum were determined by the fully automatic biochemical analyser.Moreover,the histological and morphological changes of liver tissues were observed.ResultsThe growth rate of body mass was (160.09±3.12)%in the control group at the end of 12thweek,while it was(61.67±1.98)%in the experimental group (P<0.05).The ratio of liver body weight of the experimental group (3.74±0.54) was obviously increased compared with the control group (2.85±1.26)(P<0.05).Compared with the control group,the levels of AST,ALT,TG and TC of the model group were clearly increased (P<0.05).Meanwhile,the typical fatty liver pathologic changes,local inflammation and necrosis were observed in experimental group.ConclusionThe results show that the ALD model with low mortality is stable and easy to copy,which is highly similar to the early ALD in human,and can be used in the study of ALD.
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