The relationship between activities of hepatic and gastric alcohol dehydrogenase and occurrence of chronic alcoholic liver disease

Objective: To investigate the role of hepatic and gas-tric alcohol dehydrogenase (ADH) in different pa-thologic stages of alcoholic liver disease (ALD).Methods: Thirty-nine Wistar rats were divided ran-domly into two groups: model group (24) and con-trol group (15). The ALD model was established byinfusing alcohol into the stomach. After hepatic andgastric tissues had been stained by enzyme histo-cyto-chemistry assay, the activity varieties of hepatic andgastric ADH were observed by an optical micro-scope, and the activity alterations were also deter-mined by LUZEX-F image analysis as a semi-quanti-tative method.Results: The activity of hepatic ADH gradually in-creased, but that of gastric ADH gradually decreasedin the different pathologic stages of alcoholic liverdisease. There was a significant difference betweenthe model group and control group (P【0.05).Conclusions: Along with occurrence of ALD, the ac-tivity of hepatic ADH gradually increased, but thatof gastric ADH gradually decreased, showing thatthe activity alterations of hepatic and gastric ADHmay play an important role in the onset and develop-ment of ALD.

肝胃乙醇脱氢酶活性变化与酒精性肝病发生的关系

目的 探讨肝、胃乙醇脱氢酶（ADH）活性的变化在酒精性肝病（ALD）不同病理阶段中的作用。方法 Wistar大鼠39只随机分成两组：模型组24只，对照组15只，用乙醇直接灌胃的方法建立大鼠ALD模型；用酶组织细胞化学染色技术，观察ALD不同病理阶段肝、胃ADH活性变化，并用LUZEX-F灰度图像分析仪进行ADH半定量。 结果 ALD不同病理阶段肝ADH活性进行性增加，胃ADH活性进行性下降，两者均与对照组比较差异有显著性（P＜0.05）。 结论 肝、胃ADH活性变化可能在ALD发生发展中起重要作用。

乙醇对胃乙醇脱氢酶活性变化的影响

目的 :探讨乙醇对胃乙醇脱氢酶 (Alcohol dehydrogenase,ADH)活性变化的影响。方法 :Wistar大鼠 5 2只随机分成两组 :模型组 32只 ,对照组 2 0只。用乙醇直接灌胃的方法建立大鼠模型 ;用酶组织细胞化学染色技术 ,观察胃ADH活性变化 ,并用 L UZEX- F灰度图像分析仪进行半定量。结果 :随着乙醇灌注量的增加和灌注时间的延长 ,胃 ADH活性进行性下降 ,与对照组有显著性差异 (P<0 .0 5 ) ;停止灌注后 1个月 ,胃 ADH活性明显恢复 ,且与正常对照组无显著性差异 (P>0 .0 5 )。结论 :乙醇导致胃 ADH活性进行性下降 ,从而降低了乙醇首过代谢 。