title: Exposure to the chlorofluorocarbon substitute 2,2-dichloro-1,1,1- trifluoroethane and the anesthetic agent halothane is associated with transient protein adduct formation in the heart.
abstract: Hydrochlorofluorocarbons (HCFCs) that are structural analogues of the anesthetic agent halothane may follow a common pathway of bioactivation and formation of adducts to cellular targets of distinct tissues. Exposure of rats to a single dose of HCFC 123 (2,2-dichloro- 1,1,1-trifluoroethane) or its structural analogue halothane (2-bromo-2-chloro-1,1,1-trifluoroethane) in vivo resulted in the formation of one prominent trifluoroacetylated protein adduct (TFA-protein adduct) in the heart. In contrast, a variety of distinct TFA-protein adducts were formed in the liver and the kidney of the same animals. The TFA-protein adduct in the heart was processed rapidly; t1/2 of the intact TFA-protein adduct was less than 12 h.
authors.affiliation: Dept. of Pharmacology, Biocenter of the University, Basel, Switzerland.
authors.forename: J
authors.initials: J
authors.lastname: Huwyler
authors.forename: J
authors.initials: J
authors.lastname: Gut
mesh_terms: D000818:Animals; D000906:Antibodies / Q000302:isolation & purification; D001711:Biotransformation; D017402:Chlorofluorocarbons; D064227:Chlorofluorocarbons, Ethane; D005617:Chlorofluorocarbons, Methane / Q000378:metabolism*; D002846:Chromatography, Affinity; D004591:Electrophoresis, Polyacrylamide Gel; D006221:Halothane / Q000378:metabolism*; D006846:Hydrocarbons, Halogenated / Q000378:metabolism*; D015151:Immunoblotting; D008297:Male; D009206:Myocardium / Q000378:metabolism*; D011485:Protein Binding; D011506:Proteins / Q000302:isolation & purification / Q000378:metabolism*; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: D000906:Antibodies; D017402:Chlorofluorocarbons; D064227:Chlorofluorocarbons, Ethane; D005617:Chlorofluorocarbons, Methane; D006846:Hydrocarbons, Halogenated; D011506:Proteins; C067411:2,2-dichloro-1,1,1-trifluoroethane; D006221:Halothane