no losartan a

Angiotensin II is a hormone that plays an important role in regulating blood pressure. Elevated levels of angiotensin II are implicated in inducing and maintaining hypertension, and also in the development of atherosclerosis. Both of these effects are mediated by the angiotensin II type 1 (AT1) receptor. Losartan is a mammalian AT1 receptor antagonist with a Ki value of 5-20 nM. In humans, losartan effectively controls hypertension while protecting renal function. Nitric oxide (NO) causes vasodilation and also inhibits platelet and neutrophil aggregation in the endothelium. NO-losartan A possesses similar anti-hypertensive effects to losartan, with the addition of the vasodilating effects of NO release.

Losartan Carboxylic Acid (E-3174) 是 Losartan 的活性羧酸代谢产物，是血管紧张素Ⅱ受体 1 型(AT1)拮抗剂。它能够阻断血管紧张素 II 诱导的血管平滑肌细胞反应，可以提高血浆肾素活性，降低平均动脉压。

Losartan potassium impurity E is a compound of Valsartan impurity.