Effects of seasonal acclimatization on action potentials and sarcolemmal K+ currents in roach (Rutilus rutilus) cardiac myocytes.

@article{Badr2017EffectsOS,
  title={Effects of seasonal acclimatization on action potentials and sarcolemmal K+ currents in roach (Rutilus rutilus) cardiac myocytes.},
  author={Ahmed Badr and Minna Hassinen and Mohamed Abdel-Fattah El-Sayed and Matti Vornanen},
  journal={Comparative biochemistry and physiology. Part A, Molecular \& integrative physiology},
  year={2017},
  volume={205},
  pages={
          15-27
        }
}
  • A. Badr, M. Hassinen, +1 author M. Vornanen
  • Published 1 March 2017
  • Biology, Medicine
  • Comparative biochemistry and physiology. Part A, Molecular & integrative physiology
Temperature sensitivity of electrical excitability is a potential limiting factor for high temperature tolerance of ectotherms. The present study examines whether heat resistance of electrical excitability of cardiac myocytes is modified by seasonal thermal acclimatization in roach (Rutilus rutilus), a eurythermal teleost species. To this end, temperature dependencies of ventricular action potentials (APs), and atrial and ventricular K+ currents were measured from winter-acclimatized (WiR) and… Expand
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