Temperature effects on Ca2+ cycling in scombrid cardiomyocytes: a phylogenetic comparison.

  title={Temperature effects on Ca2+ cycling in scombrid cardiomyocytes: a phylogenetic comparison.},
  author={Gina L J Galli and Michael S Lipnick and Holly A Shiels and Barbara A Block},
  journal={The Journal of experimental biology},
  volume={214 Pt 7},
Specialisations in excitation-contraction coupling may have played an important role in the evolution of endothermy and high cardiac performance in scombrid fishes. We examined aspects of Ca(2+) handling in cardiomyocytes from Pacific bonito (Sarda chiliensis), Pacific mackerel (Scomber japonicus), yellowfin tuna (Thunnus albacares) and Pacific bluefin tuna (Thunnus orientalis). The whole-cell voltage-clamp technique was used to measure the temperature sensitivity of the L-type Ca(2+) channel… CONTINUE READING


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