title: Changes of cholinesterase activities in the rat blood and brain after sarin intoxication pretreated with butyrylcholinesterase.
abstract: After sarin inhalation exposure of rats pretreated with equine serum butyrylcholinesterase (EqBuChE), cholinesterase activities of the whole blood, acetylcholinesterase (AChE) in erythrocytes, pontomedullar area, frontal cortex, and striatum of the brain, and plasma butyrylcholinesterase (BuChE) were determined. Using different doses of EqBuChE as a pretreatment (intraperitoneal injection), dose-dependent increases in plasma BuChE activity and no changes in the erythrocyte and brain AChE activities were demonstrated. Decreases in plasma BuChE activity and red blood cells (RBC) and brain AChE activities were observed in control rats after sarin inhalation exposure without EqBuChE pretreatment. In rats pretreated with EqBuChE, this inhibition was lower compared with control animals not only in the blood but also in the brain structures studied. These results demonstrate protective effects of EqBuChE pretreatment in rats intoxicated with sublethal concentrations of sarin by inhalation.
authors.affiliation: Department of Toxicology, Faculty of Military Health Sciences, University of Defence, Hradec Kralove, Czech Republic. bajgar@pmfhk.cz
authors.forename: Jiri
authors.initials: J
authors.lastname: Bajgar
authors.forename: Lucie
authors.initials: L
authors.lastname: Bartosova
authors.forename: Kamil
authors.initials: K
authors.lastname: Kuca
authors.forename: Daniel
authors.initials: D
authors.lastname: Jun
authors.forename: Josef
authors.initials: J
authors.lastname: Fusek
mesh_terms: D000110:Acetylcholinesterase / Q000097:blood / Q000378:metabolism; D000818:Animals; D001921:Brain / Q000187:drug effects* / Q000201:enzymology; D002091:Butyrylcholinesterase / Q000008:administration & dosage / Q000097:blood / Q000627:therapeutic use; D002619:Chemical Warfare Agents / Q000633:toxicity*; D004305:Dose-Response Relationship, Drug; D005260:Female; D019570:Inhalation Exposure; D020011:Protective Agents / Q000008:administration & dosage / Q000627:therapeutic use; D051381:Rats; D017208:Rats, Wistar; D012524:Sarin / Q000633:toxicity*
chemical_list: D002619:Chemical Warfare Agents; D020011:Protective Agents; D012524:Sarin; D000110:Acetylcholinesterase; D002091:Butyrylcholinesterase