Title : The effect of pyridostigmine pretreatment on oxime efficacy against intoxication by soman or VX in rats.

Pub. Date : 1992

PMID : 1459041






6 Functional Relationships(s)
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1 In all experiments, rats were given PYR (131 micrograms/kg, im; I70 dose for whole blood AChE) or vehicle 30 min prior to nerve agent. Pyridostigmine Bromide acetylcholinesterase Rattus norvegicus
2 In assessing therapeutic efficacy and oxime-induced reactivation of blood AChE, rats were pretreated with PYR, challenged with agent and treated with atropine (16 mg/kg, im) and HI-6 or 2-PAM (100 umoles/kg, im) 30 sec post agent. Oximes acetylcholinesterase Rattus norvegicus
3 Also, AChE reactivation by HI-6 in VX-challenged rats was greater (p < .05) in vehicle- than in PYR-pretreated rats. asoxime chloride acetylcholinesterase Rattus norvegicus
4 HI-6 significantly reactivated AChE activity in both pretreatment groups (PYR or vehicle) given soman. asoxime chloride acetylcholinesterase Rattus norvegicus
5 The data suggest that PYR decreases the overall recovery of inhibited AChE in VX-challenged rats given HI-6; under the conditions used, this adverse effect decreases atropine+oxime efficacy against VX-induced lethality. asoxime chloride acetylcholinesterase Rattus norvegicus
6 The data suggest that PYR decreases the overall recovery of inhibited AChE in VX-challenged rats given HI-6; under the conditions used, this adverse effect decreases atropine+oxime efficacy against VX-induced lethality. VX acetylcholinesterase Rattus norvegicus