Efficacy of novel phenoxyalkyl pyridinium oximes as brain-penetrating reactivators of cholinesterase inhibited by surrogates of sarin and VX
作者:Janice E. Chambers、Howard W. Chambers、Kristen E. Funck、Edward C. Meek、Ronald B. Pringle、Matthew K. Ross
DOI:10.1016/j.cbi.2016.07.004
日期:2016.11
behavior with several of the more effective novel oximes, but not 2-PAM. Therefore these novel oximes have demonstrated an ability to reactivate inhibited ChE in brain preparations from two species and in vivo data support their ability to enter the brain and provide a therapeutic action. These novel oximes have the potential to be developed into improved antidotes for nerve agent therapy.
吡啶鎓肟是强亲核试剂,许多是有机磷酸酶抑制胆碱酯酶(ChE)的有效活化剂。然而,当前的肟再活化剂在穿越血脑屏障和再活化完整生物中的脑ChE方面是无效的。我们的实验室已经开发了一系列取代的苯氧基烷基吡啶鎓肟(美国专利9,227,937 B2),目的是鉴定能有效跨越血脑屏障的活化剂。发现该系列的前35个在体外具有相似的特征沙林替代品(邻苯二甲酰亚胺基异丙基甲基膦酸酯,PIMP)或VX替代品(硝基苯基乙基甲基膦酸酯,NEMP)在牛脑制剂中抑制ChE活化剂的功效,如先前在大鼠脑制剂中观察到的。这些新型肟中的许多已经显示出能够降低用高致死剂量的沙林替代品(硝基苯基异丙基甲基膦酸酯,NIMP)或VX替代NEMP处理的大鼠大脑中ChE抑制水平的能力。肟给药后2小时的再活化水平高达35%,而目前批准的治疗药物2-PAM并未降低脑ChE抑制作用。另外,有证据显示几种更有效的新型肟可减轻癫痫样行为,但2-PA