Cerebral glucose utilization and glucose transporter expression: response to water deprivation and restoration.
Cerebral glucose utilization and glucose transporter expression: response to water deprivation and restoration.
复制标题
大脑葡萄糖利用和葡萄糖转运蛋白表达：对缺水和恢复的反应。
DOI：
10.1097/00004647-200001000-00024
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
Simpson,IA
中科院分区：
文献类型：
--
作者：
Koehler-Stec,EM;Li,K;Maher,F;Vannucci,SJ;Smith,CB;Simpson,IA
The relationship between local rates of cerebral glucose utilization (lCMRglc) and glucose transporter expression was examined during physiologic activation of the hypothalamoneurohypophysial system. Three days of water deprivation, which is known to activate the hypothalamoneurohypophysial system, resulted in increased lCMRglcand increased concentrations of GLUT1 and GLUT3 in the neurohypophysis; mRNA levels of GLUT1 and GLUT3 were decreased and increased, respectively. Water deprivation also increased lCMRglcin the hypothalamic supraoptic and paraventricular nuclei; mRNA levels of GLUT1 and GLUT3 appeared to increase in these nuclei, but the changes did not achieve statistical significance. Restoration of water for 3 to 7 days reversed all observed changes in GLUT expression (protein and mRNA); restoration of water also reversed changes in lCMRglcin both the neurohypophysis and the hypothalamic nuclei. These results indicate that under conditions of neural activation and recovery, changes in lCMRglcand the levels of GLUT1 and GLUT3 are temporally correlated in the neurohypophysis and raise the possibility that GLUT1 and GLUT3 transporter expression may be regulated by chronic changes in functional activity. In addition, increases in the expression of GLUT5 mRNA in the neurohypophysis after dehydration provide evidence for involvement of microglial activation.
