Effects of temperature and calcium availability on ventricular myocardium from rainbow trout.

@article{Coyne2000EffectsOT,
  title={Effects of temperature and calcium availability on ventricular myocardium from rainbow trout.},
  author={Mary D. Coyne and Chong Soon Kim and John S. Cameron and Judith K. Gwathmey},
  journal={American journal of physiology. Regulatory, integrative and comparative physiology},
  year={2000},
  volume={278 6},
  pages={R1535-44}
}
We studied the mechanical and electrophysiological properties of ventricular myocardium from rainbow trout (Oncorhynchus mykiss) in vitro at 4, 10, and 18 degrees C from fish acclimated at 10 degrees C. Temperature alone did not significantly alter the contractile force of the myocardium, but the time to peak tension and time to 80% relaxation were prolonged at 4 degrees C and shortened at 18 degrees C. The duration of the action potential was also prolonged at 4 degrees C and progressively… CONTINUE READING