The effects of thermal acclimation upon ion transport in erythrocytes |
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Authors: | P.K. Bourne A.R. Cossins |
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Affiliation: | Dept. of Zoology, Univ. of Liverpool, P.O. Box 247, Liverpool L69 3BX, U.K. |
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Abstract: | The different components of 86Rb+ influx (a marker for K+ influx) were measured in erythrocytes of 10°C and 30°C-acclimated carp. Passive influx was similar in both acclimation groups and was stimulated by increased temperature. The active and facilitated components of 86Rb+ influx plateaued above 15°C in 10°C-acclimated carp and above 25°C in 30°C-acclimated carp. The furosemide-sensitive component, an ill-defined facilitated mechanism, was particularly affected by high temperatures. The influx rates of each acclimation group at 50°C were almost identical but at higher temperatures, the influx rates for 30°C-acclimated carp were substantially greater than for the 10°C-acclimated fish. |
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Keywords: | Carp erythrocytes K+ influx ouabain furosemide temperature acclimation |
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