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[缺血及给予钙调蛋白抑制剂、AMP和NAD后大鼠肾脏的糖酵解]

[Glycolysis in the rat kidney shortly after ischemia and administration of calmodulin inhibitors, AMP and NAD].

作者信息

Tamarina N Z, Lystsova G V, Chumakov V N

出版信息

Ukr Biokhim Zh (1978). 1986 Nov-Dec;58(6):42-6.

PMID:3798579
Abstract

It is shown in experiments on rats that the early postischemic period after 1- and 1.5-hour ischemia of kidneys is characterized by a decrease in the damage of the glycolytic system site which induces glucose-6-phosphate transformation into lactate and by an increase in the inhibition intensity of the initial hexokinase reaction of glycolysis. In the postischemic period after more prolonged (2-, 3-hour) ischemia the damage of the glycolytic system develops also at the site of glucose-6-phosphate transformation into lactate. Administration either of the nucleotide complex (NAD and AMP) or calmodulin inhibitors (aminazine and zinc sulphate) to rats prior to two-hour occlusion of kidneys vessels promotes a decrease in the inhibition of the glycolytic system activity in the postischemic period. At the same time the separate and combined application of zinc sulphate and triftazin (the most intensive calmodulin inhibitor) is not efficient. The positive effect of NAD, AMP and aminazine on the state of the glycolytic kidney system in the postischemic period correlates with the improvement of the blood microcirculation processes in them.

摘要

在大鼠实验中表明,肾脏缺血1小时和1.5小时后的缺血后早期,糖酵解系统中诱导6-磷酸葡萄糖转化为乳酸的部位损伤减少,糖酵解初始己糖激酶反应的抑制强度增加。在更长时间(2小时、3小时)缺血后的缺血后时期,6-磷酸葡萄糖转化为乳酸的部位也会出现糖酵解系统损伤。在大鼠肾血管闭塞两小时前给予核苷酸复合物(NAD和AMP)或钙调蛋白抑制剂(氯丙嗪和硫酸锌),可促进缺血后时期糖酵解系统活性抑制的降低。同时,硫酸锌和三氟拉嗪(最强效的钙调蛋白抑制剂)单独或联合应用均无效。NAD、AMP和氯丙嗪对缺血后时期肾脏糖酵解系统状态的积极作用与它们中血液微循环过程的改善相关。

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