Abstract:
:Fetal bovine serum acetylcholinesterase (FBS-AChE, EC 3.1.1.7) was titrated, both in vitro and in vivo, with a highly toxic anti-ChE organophosphate, 7-(methylethoxyphosphinyloxy)-1-methyl-quinolinium iodie (MEPQ). Approximately 1:1 stoichiometry was obtained for the sequestration of MEPQ by FBS-AChE in mice. A quantitative, linear correlation was demonstrated between blood-AChE levels and the protection afforded by exogenously administered AChE in mice when challenged with anti-ChE MEPQ. The results presented in this report demonstrate that such prophylactic measures are indeed sufficient to protect animals against poisoning by as high as an 8 x LD50 dose of organophosphate without the administration of any supportive drug. Despite the relatively large toxic dose, most of the mice that survived the challenge did not show any classical clinical signs of severe anti-ChE poisoning. MEPQ may be considered a suitable model compound for studying the quantitative aspects of the scavenger prophylactic approach described here.
journal_name
Biochem Pharmacoljournal_title
Biochemical pharmacologyauthors
Raveh L,Ashani Y,Levy D,De La Hoz D,Wolfe AD,Doctor BPdoi
10.1016/0006-2952(89)90394-8subject
Has Abstractpub_date
1989-02-01 00:00:00pages
529-34issue
3eissn
0006-2952issn
1873-2968pii
0006-2952(89)90394-8journal_volume
38pub_type
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