Oximes-induced reactivation of rat brain acetylcholinesterase inhibited by VX agent.
A comparison of one mono- and seven bisquaternary acetylcholinesterase (AChE) reactivators of acetylcholinesterase inhibited by VX agent was performed. As a source of the acetylcholinesterase, a rat brain homogenate was taken. There were significant differences in reactivation potency of all tested oximes. The oxime TO205 seems to be the most efficacious followed by TO046, HI-6, HS-6, K027, obidoxime, MMC and 2-PAM. In addition, the results of this study showed that the reactivation potency of the tested reactivators depends on many factors--such as the number of pyridinium rings, the number of oxime groups and their position, as well as the length and the shape of linkage bridge between two pyridinium rings.
Kuca
Kamil
K
Purkyne Military Medical Academy, Department of Toxicology, PO Box 35/T, 500 01 Hradec Králové, Czech Republic. kucakam@pmfhk.cz
Kassa
Jirí
J
D000110:Acetylcholinesterase / Q000378:metabolism*; D000818:Animals; D001921:Brain / Q000187:drug effects* / Q000201:enzymology; D002800:Cholinesterase Inhibitors / Q000494:pharmacology*; D002801:Cholinesterase Reactivators / Q000737:chemistry / Q000494:pharmacology*; D066298:In Vitro Techniques; D008297:Male; D009946:Organothiophosphorus Compounds / Q000494:pharmacology*; D010091:Oximes / Q000737:chemistry / Q000494:pharmacology*; D051381:Rats; D017208:Rats, Wistar
D000110:Acetylcholinesterase; D002800:Cholinesterase Inhibitors; D002801:Cholinesterase Reactivators; D009946:Organothiophosphorus Compounds; D010091:Oximes; C009680:VX-agent