• Corpus ID: 51774934

Temperature and pH effects on calcium-sensitivity of cardiac myofibrils of rat and trout

  title={Temperature and pH effects on calcium-sensitivity of cardiac myofibrils of rat and trout},
  author={Carmen S. Churcott},
The hearts of cold water fish function at lower physiological temperatures than mammals (37OC for mammals and approximately 4 18% for trout). The purpose of this study was to investigate possible differences in the contractile element that could explain how trout heart can function at temperatures which are cardioplegic for mammals. From this perspective, it was postulated that myofibrillar ATPase Ca2+sensitivity in the trout heart might: 1) be greater over the range of physiological… 
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We have developed a method that allows a detailed analysis of the electrical phenomena during the cardiac cycle of fish, including the 3 bipolar and monopolar leads of standard electrocardiography.



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