Control of red blood cell metabolism in rainbow trout after exhaustive exercise
نویسندگان
چکیده
منابع مشابه
Control of red blood cell metabolism in rainbow trout after exhaustive exercise.
Metabolic responses (rates of CO2 production from 14C-labelled glucose or lactate, and total O2 consumption) of red blood cells were monitored in rainbow trout (Oncorhynchus mykiss) at rest and during 12 h of recovery from exhaustive exercise. Extracellular acid-base status, red blood cell intracellular pH (pHi), and plasma metabolite and catecholamine levels were recorded simultaneously. Despi...
متن کاملCharacterization of red blood cell metabolism in rainbow trout.
Red blood cell metabolism was studied in vitro using whole blood obtained by catheter from resting rainbow trout (Oncorhynchus mykiss). Preparations were viable as shown by stable NTP, metabolite and catecholamine levels and acid-base status, all of which remained at in vivo levels over the 2 h incubation period. Enzymes diagnostic of glycolysis, the tricarboxylic acid (TCA) cycle and phosphage...
متن کاملMetabolic Recovery from Exhaustive Exercise in Rainbow Trout
Exercise to exhaustion results in severe metabolic, acid-base, and endocrine disturbances to fish. Recovery metabolism from this type of activity may place limits on performance, since the time requirements for restoration of high energy stores (e.g. glycogen, high energy phosphates) will ultimately determine the frequency of maximal performance. This article reviews the types of metabolic, aci...
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The effects of cell age on metabolism in the nucleated red blood cells of rainbow trout (Oncorhynchus mykiss) were examined. Red blood cells were separated according to age using fixed-angle centrifugation. The mean erythrocyte haemoglobin concentration in old red blood cells was found to be 120 % of that in young red blood cells. In young red blood cells, the activities of the mitochondrial en...
متن کاملAcid-base and Ionic Exchanges at Gills and Kidney after Exhaustive Exercise in the Rainbow Trout
Unidirectional Na and Cl~ fluxes, net fluxes of Na, Cl~, other ions, titratable acid (TA), ammonia and acidic equivalents (net H) across the gills, together with the comparable renal fluxes, were monitored throughout a 24-h period after exhaustive exercise (simple chasing) in the rainbow trout. The gills were the major site of flux. The renal excretion of [TA—HCO3~], ammonia, lactate and most e...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 1990
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.154.1.491