reperfusion of rat heart with ca2+-containing medium for 1 to 10 min after a 5 min perfusion with ca2+-free medium resulted in a generalized disruption of myocardial ultrastructure including swelling of sarcoplasmic reticulum and mitochondria , depletion of creatine phosphate and adenosine triphosphate stores , reduction of the microsomal but augmentation of the mitochondrial ca2+ uptake activities and elevation of the cardiac na+ as well as ca2+ contents .
C0027061
myocardial
C0018787
cardiac