Inactivation of liver alcohol dehydrogenases and inhibition of ethanol metabolism by ambivalent active-site-directed reagents
作者:Wen-Sherng Chen、David P. Bohlken、Bryce V. Plapp
DOI:10.1021/jm00134a012
日期:1981.2
Active-site-directed reagents, of the general structure omega-(BrCH2CONH)RCOY, where R = alkyl, aryl, or aralkyl, and Y = OH or NH2, inactivated horse, mouse, rat, and human liver alcohol dehydrogenases at widely different rates, reflecting differences in reagent specificity and in the structures of the enzymes. Treatment of mice and rats with either of two optimally specific reagents, p-(XCH2CONH)C6H4(CH2)3CONH2
活性定点的通用结构为omega-(BrCH2CONH)RCOY的试剂,其中R =烷基,芳基或芳烷基,Y = OH或NH2,失活的马,小鼠,大鼠和人肝醇脱氢酶有很大不同速率,反映了试剂特异性和酶结构的差异。用两种最佳特异性试剂p-(XCH2CONH)C6H4(CH2)3CONH2(其中X = Br(7)或CH3SO3(10))部分(20%至40%)灭活肝脏中的酒精脱氢酶对小鼠和大鼠进行治疗,抑制乙醇代谢,并延长乙醇在这些动物体内产生的协调性受损。尽管使用的7种剂量(0.13 mmol / kg)接近LD50,但10种有效剂量为0.48 mmol / kg,无急性毒性。