期刊
BIOELECTROCHEMISTRY
卷 52, 期 2, 页码 127-131出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/S0302-4598(00)00111-2
关键词
sickle; red cells; temperature; KCCl
The maintenance of red blood cell volume is important in the pathophysiology of sickle cell disease. The KCl cotransporter (KCCl) is capable of mediating sickle cell dehydration. In this study, we have determined the effect of increased temperature lover the range 37-41 degreesC) on basal K+ transport and K+ transport following activation of KCCl by urea or N-ethylmaleimide (NEM). An increased temperature was found to have only a small effect (approximately a 20% increase) on basal K+ transport. In contrast, the increase was much greater (about 60%) after activation of KCCl by urea, Following activation of KCCl by NEM, the increase in K+ transport with increasing temperature was small (about 10%). This suggests that it is the signalling system rather than the transporter itself that is sensitive to temperature. (C) 2000 Elsevier Science S.A. All rights reserved.
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