Isopropanol enhancement of cytochrome P-450-dependent monooxygenase activities and its effects on carbon tetrachloride intoxication.
Isopropanol enhancement of cytochrome P-450-dependent monooxygenase activities and its effects on carbon tetrachloride intoxication.
复制标题
异丙醇增强细胞色素 P-450 依赖性单加氧酶活性及其对四氯化碳中毒的影响。
DOI:
10.1016/0041-008x(83)90337-x
复制
发表时间:
1983
影响因子:
3.8
通讯作者:
A. Alvares
中科院分区:
文献类型:
--
作者:
T. Ueng;L. Moore;R. Elves;A. Alvares
Acute or chronic treatment of rats with isopropanol caused a significant increase in hepatic cytochrome P-450 content and a two- to threefold increase in aniline hydroxylase and 7-ethoxycoumarin O-deethylase activities, but no significant change in ethylmorphine N-demethylase or benzo(a)pyrene hydroxylase activity. In rats treated with isopropanol and challenged with CCl4, liver toxicity of CCl4was characteristically potentiated, as assessed by elevation of serum glutamic-pyruvic transaminase (SGPT) levels. Isopropanol pretreatment also potentiated CCl4-induced damage to the hepatic monooxygenase system. In addition to a decrease in cytochrome P-450, rats treated with isopropanol and challenged with CCl4showed a nonspecific decrease not only in aniline hydroxylase and 7-ethoxycoumarin O-deethylase activities, but also in ethylmorphine N-demethylase, benzo(a)pyrene hydroxylase, and NADPH-cytochrome c reductase activities. These results were confirmed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis of solubilized microsomes. The electrophoretic results showed that isopropanol pretreatment markedly potentiated the CCl4-caused destruction of cytochrome P-450 hemeproteins. The data strongly suggest that isopropanol increases one or more forms of cytochrome P-450 which selectively enhance the metabolism of CCl4to an active metabolite. This active metabolite then causes a nonselective damage to the microsomal mixedfunction oxidase system.
登录
查看更多内容
DOI:
10.3109/15563658208990399
发表时间:
1982
期刊:
Journal of toxicology. Clinical toxicology
影响因子:
--
作者:
Anders,MW
通讯作者:
Anders,MW
DOI:
--
发表时间:
1982
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Morgan,ET;Koop,DR;Coon,MJ
通讯作者:
Coon,MJ
影响因子:
6.1
作者:
Reynolds,ES;Moslen,MT;Treinen,RJ
通讯作者:
Treinen,RJ
影响因子:
3.8
作者:
Head,B;Moody,DE;Woo,CH;Smuckler,EA
通讯作者:
Smuckler,EA
影响因子:
5.8
作者:
Sinclair,JF;Smith,L;Bement,WJ;Sinclair,PR;Bonkowsky,HL
通讯作者:
Bonkowsky,HL