慢性乙醇摄入大鼠肝脏醇脱氢酶和谷胱甘肽硫转移酶活性影响

为探讨长期摄入乙醇大鼠肝脏ＡＤＨ和ＧＳＴ活性的动态变化，旨在为酒精中毒的发病机理提供实验依据，进行了下述实验研究。选用体重１００～１２０ｇＳＤ雄性大鼠４８只，随机分成两组：（１）对照组：２４只喂普通饲料，饮用自来水，（２）乙醇组：２４只白天饮用１０％蔗糖水，夜间饮用１０５乙醇水溶液，平均每只实验动物的乙醇摄入量为８．０ｇ／ｋｇ体重／ｄ，饲料同对照组。实验开始后的３０ｄ、６０ｄ时分批处死动物，第９０天时处死全部动物，除肉眼观察肝脏形态学改变外，同时留取病理标本和进行组织中ＡＤＨ和ＧＳＴ活性测定，结果显示：（１）大鼠肝细胞胞浆中ＡＤＨ活性，在服用乙醇３０ｄ时即可看到明显减低，较对照组有显著差别（Ｐ＜０．０５），至实验９０ｄ结束时，其减低的更明显（Ｐ＜０．０１）．（２）大鼠肝细胞胞浆中ＧＳＴ活性　在６０ｄ和９０ｄ时乙醇组较对照组均明显减低，经统计学处理均有显著差别（Ｐ＜０．０１）。上述结果提示肝脏ＡＤＨ和ＧＳＴ活性表达在酒精性肝病发病机制中起着重要作用。

Effect of Chronic Alcohol intake on the Activitiesof Alcohol Dehvdrogenase and GlutathioneS-transferase of Rat Liver

8 male Sprague Dawley rats were fed with 10% (V/V) ethanol fromdrinking water at an average dose of 8.0g/kg body weight per day for 90days. Control rats were given the common diet without ethanol. Theactivities of alcoho1 dehydrogenase (ADH) and glutathione S-transferase(GST )of rat liver were measured at 30, 60 and 90 days of the experi-ment respectively. The results demonstrated that there was a significantdecrease of ADH and GST activities of rat liver in chronic aicoholintake group (P<0.05, and P<0.01) .