But, as I mentioned earlier, this renin angiotensin aldosterone system is stimulated by low salt intake.

但是，正如之前提到的，低盐饮食会导致 RAA 系统活跃。

And to our surprise, they doubled and tripled the concentration of angiotensin in the blood.

令惊讶的是，它使液中管紧张素的浓度翻倍甚至增至三倍。

And then we decided to look at, are these neurons actually capable to transmit information from angiotensin.

于是定探究，这些神经元是否真的能够传递来自管紧张素的信息。

[Elena Gracheva] The next step was to check if neurons that detect angiotensin, are they actually sensitive to this hormone?

下一步是测管紧张素的神经元是否真的对这种激素敏感？

[Elena Gracheva] So, despite that they're sensitive to angiotensin, they cannot transmit this information downstream to different brain regions.

却无法将这一信息传递至下游的不同脑区。

This is going to trigger the production of this hormone, angiotensin 2, along with its sidekick, aldosterone, which can stimulate sodium appetite.

这将触发这种激素——管紧张素2的生成，以及它的搭档——醛固酮的生成，后者可以刺激对钠的需求。

[Maddy Junkins] And this suggests that they're detecting aldosterone and responding with sodium appetite, but they're not detecting angiotensin and responding with thirst.

这表明它能够测到醛固酮并产生对钠的需求，但它无法测到管紧张素并产生口渴反应。

This system begins with your liver releasing angiotensinogen, and, after a series of steps that you can read about in an endocrinology textbook, angiotensin I is produced.

该系统开始从肝脏释放管紧张素原，经过一系列步骤（请参考内分泌相关教材）之后，I 型管紧张素产生了。

Your kidneys cook up hormones like renin and angiotensin which help regulate levels of sodium and fluids in your body, and also help expand and constrict blood vessels.

你的肾脏会分泌肾素和管紧张素等荷尔蒙，这些荷尔蒙有助于调节体内钠和液体的水平，也有助于扩张和收缩管。

Along the same lines, drugs that reduce the effect of aldosterone can also cause hyperkalemia, and these are drugs like renin inhibitors, ACE inhibitors, angiotensin II receptor antagonists, selective aldosterone blockers, and potassium-sparing diuretics.

同理，可以降低醛固酮效能的药物也可以导致高钾症，例如肾素抑制剂、ACE抑制剂、管紧张素II受体拮抗剂、选择性醛固酮受体阻滞剂以及保钾利尿剂等。