title: Creatine phosphokinase activities in rainbow trout, Salmo gairdneri, associated with rapid decompression.
abstract: Serum creatine phosphokinase (CPK) activity levels were monitored in rainbow trout following rapid decompression. Serum activity was elevated 8.5-fold at 24 h and 15-fold at 48 h after decompression from 100-feet sea water (fsw) dives of 1 1/2 h duration. Serum enzyme activity was unchanged in the 66-fsw group. Stress results indicated a proportional relationship exists between serum CPK activity and muscular activity. CPK activities were found to be 1,023 in skeletal (white) muscle and 255 mumol . min-1 . g-1 in heart ventricle. Elevated CPK activity was not associated with tissue necrosis and is considered a consequence of increased anaerobic respiration stimulated by muscular activity and pressure-induced peripheral hypoxia.
mesh_terms: D000818:Animals; D003402:Creatine Kinase / Q000097:blood*; D003664:Decompression / Q000662:veterinary*; D009132:Muscles / Q000201:enzymology; D009206:Myocardium / Q000201:enzymology; D012487:Salmonidae / Q000097:blood*; D013312:Stress, Physiological / Q000201:enzymology; D014337:Trout / Q000097:blood*
chemical_list: D003402:Creatine Kinase