Effects of [Ca2+]o on contractility in the anoxic cardiac muscle of mammal and fish.
Electrically paced atrial strips of hearts from rat and rainbow trout were exposed to increasing extracellular Ca2+ concentration, [Ca2+]o. This resulted in increases in the peak force in oxygenated atria from both species. During anoxia this response was suppressed for the rat, but accentuated for trout atrium.
D000818:Animals; D002118:Calcium / Q000494:pharmacology*; D006321:Heart / Q000503:physiopathology*; D006325:Heart Atria / Q000503:physiopathology; D000860:Hypoxia / Q000503:physiopathology*; D009200:Myocardial Contraction / Q000187:drug effects*; D051381:Rats; D013268:Stimulation, Chemical; D014337:Trout
D002118:Calcium