Effects of prolonged anoxia on electrical activity of the heart in Crucian carp (Carassius carassius)
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منابع مشابه
Effects of prolonged anoxia on electrical activity of the heart in crucian carp (Carassius carassius).
The effects of sustained anoxia on cardiac electrical excitability were examined in the anoxia-tolerant crucian carp (Carassius carassius). The electrocardiogram (ECG) and expression of excitation-contraction coupling genes were studied in fish acclimatised to normoxia in summer (+18°C) or winter (+2°C), and in winter fish after 1, 3 and 6 weeks of anoxia. Anoxia induced a sustained bradycardia...
متن کاملThermal adaptation of the crucian carp ( Carassius carassius ) cardiac delayed
6 7 8 Minna Hassinen, Salla Laulaja, Vesa Paajanen, Jaakko Haverinen and Matti Vornanen 9 University of Eastern Finland, Department of Biology, P.O. Box 111, 80101 Joensuu, Finland 10 11 12 13 Short title: Thermal adaptation of cardiac potassium current in crucian carp 14 15 16 17 Address for correspondence: 18 Matti Vornanen 19 University of Eastern Finland 20 Department of Biology, P.O. box 1...
متن کاملSeasonality of dihydropyridine receptor binding in the heart of an anoxia-tolerant vertebrate, the crucian carp (Carassius carassius L.).
Prolonged anoxia tolerance of facultative anaerobes is based on metabolic depression and thus on controlled reduction of energy-utilizing processes. One proposed survival mechanism is the closing of ion channels to decrease energetic cost of ion pumping (Hochachka PW. Science 231: 234-241, 1986). To test this hypothesis, the involvement of L-type Ca2+ channels in seasonal anoxia tolerance of th...
متن کاملLife without Oxygen: Gene Regulatory Responses of the Crucian Carp (Carassius carassius) Heart Subjected to Chronic Anoxia
Crucian carp are unusual among vertebrates in surviving extended periods in the complete absence of molecular oxygen. During this time cardiac output is maintained though these mechanisms are not well understood. Using a high-density cDNA microarray, we have defined the genome-wide gene expression responses of cardiac tissue after exposing the fish at two temperatures (8 and 13 °C) to one and s...
متن کاملIntrinsic contractile properties of the crucian carp (Carassius carassius) heart during anoxic and acidotic stress.
The crucian carp (Carassius carassius) seems unique among vertebrates in its ability to maintain cardiac performance during prolonged anoxia. We investigated whether this phenomenon arises in part from a myocardium tolerant to severe acidosis or because the anoxic crucian carp heart may not experience a severe extracellular acidosis due to the fish's ability to convert lactate to ethanol. Spont...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 2016
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.145177