title: A comparison of the ability of newly-developed bispyridinium oxime K203 and currently available oximes (trimedoxime, obidoxime, HI-6) to counteract the acute neurotoxicity of soman in rats.
abstract: The neuroprotective effects of newly-developed oxime K203 and currently available oximes (trimedoxime, obidoxime, HI-6) in combination with atropine in rats poisoned with soman were studied. The soman-induced neurotoxicity was monitored using a functional observational battery at 24 h following soman challenge. The results indicate that the potency of a newly-developed oxime K203 to counteract soman-induced neurotoxicity is very low and roughly corresponds to the neuroprotective efficacy of currently available oximes. Among tested oximes, the oxime HI-6 seems to be the most efficacious to counteract acute neurotoxicity of soman, although the differences in neuroprotective efficacy of chosen oximes are not significant. Thus, the oxime K203 does not provide any beneficial effect for the antidotal treatment of acute poisoning with soman and the oxime HI-6 should be still considered to be the best oxime for antidotal treatment of acute soman poisonings.
authors.affiliation: Department of Toxicology, Faculty of Military Health Sciences, Hradec Kralove, Czech Republic. kassa@pmfhk.cz
authors.forename: Jiri
authors.initials: J
authors.lastname: Kassa
authors.forename: Jana Zdarova
authors.initials: JZ
authors.lastname: Karasova
authors.forename: Sandra
authors.initials: S
authors.lastname: Tesarova
authors.forename: Kamil
authors.initials: K
authors.lastname: Kuca
authors.forename: Kamil
authors.initials: K
authors.lastname: Musilek
mesh_terms: D000818:Animals; D001285:Atropine / Q000494:pharmacology; D001522:Behavior, Animal / Q000187:drug effects / Q000502:physiology; D002619:Chemical Warfare Agents / Q000633:toxicity*; D004359:Drug Therapy, Combination; D008297:Male; D009043:Motor Activity / Q000187:drug effects / Q000502:physiology; D018696:Neuroprotective Agents / Q000494:pharmacology*; D020258:Neurotoxicity Syndromes / Q000188:drug therapy* / Q000503:physiopathology; D010091:Oximes / Q000494:pharmacology*; D011726:Pyridinium Compounds / Q000494:pharmacology*; D051381:Rats; D017208:Rats, Wistar; D012999:Soman / Q000633:toxicity*
chemical_list: C524716:1-(4-carbamoylpyridinium)-4-(4-hydroxyiminomethylpyridinium)but-2-ene; D002619:Chemical Warfare Agents; D018696:Neuroprotective Agents; D010091:Oximes; D011726:Pyridinium Compounds; D001285:Atropine; D012999:Soman; C022870:asoxime chloride