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L-type Ca2+ current in fish cardiac myocytes: effects of thermal acclimation and beta-adrenergic stimulation.
  • M. Vornanen
  • Biology, Medicine
  • The Journal of experimental biology
  • 15 February 1998
TLDR
The patch-clamp analysis of L-type Ca2+ current in ventricular myocytes of cold- and warm-acclimated rainbow trout and crucian carp hearts concluded that sarcolemmal Ca2- current is not increased after acclimation to cold, and that ss-adrenergic stimulation of Ca2+. Expand
Sarcolemmal Ca influx through L-type Ca channels in ventricular myocytes of a teleost fish.
  • M. Vornanen
  • Chemistry, Medicine
  • The American journal of physiology
  • 1 May 1997
TLDR
The findings imply that Ca influx through L-type Ca channels can contribute significantly to the activation of contraction in the ventricular myocytes of fish heart. Expand
Plasticity of excitation-contraction coupling in fish cardiac myocytes.
TLDR
Exitation-contraction coupling of the fish cardiac myocytes is not a fixed entity, but rather a highly variable and malleable process that enables fish to have an appropriate cardiac scope to exploit a diverse range of environments. Expand
Steady-state effects of temperature acclimation on the transcriptome of the rainbow trout heart.
TLDR
Temperature-related changes in transcripts of metabolic enzymes suggest that at mRNA level, glycolytic energy production from carbohydrates is compensated in the heart of CA rainbow trout, while metabolic compensation is absent in mitochondria. Expand
Tension-voltage relations of single myocytes reflect Ca release triggered by Na/Ca exchange at 35 degrees C but not 23 degrees C.
TLDR
The results suggest that fast contractions due to sarcoplasmic reticulum Ca release can be triggered by Ca influx through either Ca current (ICa) or Na/Ca exchange and that those triggered through exchange are much more temperature sensitive than those triggered by ICa. Expand
Phenotypic plasticity and predator effects on morphology and physiology of crucian carp in nature and in the laboratory
TLDR
It is concluded that the deep-body form of crucian carp in the low density populations of multispecies fish communities is the normal condition. Expand
The force-frequency relationship in fish hearts--a review.
1. IntroductionThe relationship between the strength of con-traction and the interval between contractions wasfirst recognised as an important intrinsic controlsystem of the heart when Bowditch (1871Expand
Ca2+-ATPase activity and Ca2+ uptake by sarcoplasmic reticulum in fish heart: effects of thermal acclimation.
  • E. Aho, M. Vornanen
  • Medicine, Biology
  • The Journal of experimental biology
  • 15 February 1998
TLDR
It is shown that SR Ca2+ uptake is slower in fish than in mammalian hearts and that marked species-specific differences exist among teleost fish in this respect. Expand
Cold acclimation increases basal heart rate but decreases its thermal tolerance in rainbow trout (Oncorhynchus mykiss)
  • E. Aho, M. Vornanen
  • Biology, Medicine
  • Journal of Comparative Physiology B
  • 26 February 2001
TLDR
It is indicated that adaptation to cold increases basal heart rate but decreases its thermal tolerance in rainbow trout, and β-adrenoceptor activation seems to provide cardioprotection against high temperatures in the cold-adapted rainbow trout. Expand
Effect of Season and Temperature Acclimation on the Function of Crucian Carp (Carassius Carassius) Heart
TLDR
The results show that acclimation to cold does not induce positive compensatory changes in function or size of crucian carp heart, as happens in many other teleost fishes, and an inverse or noncompensatory acclimations was found. Expand
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