溴苯所致小鼠肝损伤时血清谷胱甘肽S-转移酶的变化

Serum glutathione S-transferase in bromobenzene-induced acute hepato-toxicity in mice

研究谷胱甘肽S 转移酶 (GST)在化学性肝毒物质溴苯所致小鼠肝损伤中的变化规律。结果表明 ,溴苯 15 0mg kgBW腹腔注射后 2h肝组织出现多个小灶性坏死 ,同时血清GST活性明显增高 ,注射 8h后血清丙氨酰转氨酶 (ALT)也开始增高 ,上述指标皆在给药后 16h达高峰 ,2 4h血清GST首先恢复正常。血清GST与肝组织病理学改变、血清ALT活性变化间皆存在高度的正相关。血清GST灵敏度、特异度和准确度分别为 89%、75 %和 82 % ,而血清ALT为 39%、92 %和 6 4%。诊断肝损伤的受试者工作特征曲线 (ROC)也进一步表明 ,血清GST比ALT更灵敏、更特异。提示血清GST能较好用于化学性肝损伤的预防和治疗监测。

The activity of serum glutathione S transferase (GST) was tested in bromobenzene induced acute hepatotoxicity in mice. The data showed that a lot of small local necrosis in liver biopsy was observed and serum GST activity was increased after 2 h of treatment with bromobenzene (150 mg/kg ip) in mice. Serum alanine transaminase (ALT) activity was also gradually enhanced after 8 hours of treatment. The most obvious changes were at 16 hours of bromobenzene treatment, and serum GST activity was firstly restored to normal level after 24 hours of treatment. There were good positive correlations between serum GST, ALT, as well as serum GST and the changes on liver biopsy. Evaluating analysis of the diagnosis test showed that the sensitivity, specificity and accuracy was 89%, 75% and 82% in serum GST test, and 39%、92% and 64% in serum ALT test respectively. The ROC work curve also demonstrated that serum GST was more sensitive and specific than serum ALT.