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目前对高血压时质膜上Ca~(2+)Mg~(2+)-ATP酶(钙泵)功能降低的机制一直不清楚。我们最近的实验表明,胞内高钙浓度本身可进一步抑制钙泵活性,即钙泵活性下降既是高血压的结果,又是其发生,发展和持续的一个重要原因;另一方面可能是钙泵对其内源性特异激动剂(例钙调素,CaM)的亲和力下降及/或对某些抑制剂(例三氟拉嗪,TFP)的敏感性增
At present, the mechanism of decreasing the function of Ca2 + -added Mg2 + -ATPase (calcium pump) on the plasma membrane in hypertension is still unclear. Our recent experiments show that intracellular high calcium concentration itself can further inhibit calcium pump activity, that is, the decline of calcium pump is not only the result of hypertension, but also its occurrence, development and sustained an important reason; on the other hand may be calcium pump Decreased affinity for endogenous specific agonists (eg calmodulin, CaM) and / or increased susceptibility to certain inhibitors (eg trifluoperazine, TFP)