J Spaan Julia, A Brown Mark
Departments of Medicine and Renal Medicine, St George Hospital, University of NSW, Kogarah, NSW, Australia.
Obstet Med. 2012 Dec;5(4):147-153. doi: 10.1258/om.2012.120007. Epub 2012 Dec 6.
This review presents an update of the role of the renin-angiotensin system in normal pregnancy and pre-eclampsia. We have known for years that the circulatory renin-angiotensin system in pre-eclampsia is suppressed. We now know that the circulating renin-angiotensin system does not only have a vasoconstrictor arm, but also a vasodilator arm, which is upregulated in normal pregnancy; this balance is probably disturbed in pre-eclampsia. Recent studies show the importance of the local renin-angiotensin system in the uteroplacental unit for early placentation and regulation of placental blood flow. We discuss the possible role of autoantibodies against the AT1-receptor in pre-eclampsia and the suggestion that activation of the AT1-receptor in the placenta may lead to placental dysfunction and the clinical syndrome of pre-eclampsia.
本综述介绍了肾素-血管紧张素系统在正常妊娠和子痫前期中的作用的最新情况。多年来我们已经知道子痫前期的循环肾素-血管紧张素系统受到抑制。现在我们知道循环肾素-血管紧张素系统不仅有血管收缩分支,还有血管舒张分支,后者在正常妊娠中上调;这种平衡在子痫前期可能受到干扰。最近的研究表明局部肾素-血管紧张素系统在子宫胎盘单位对早期胎盘形成和胎盘血流调节的重要性。我们讨论了抗AT1受体自身抗体在子痫前期中的可能作用,以及胎盘AT1受体激活可能导致胎盘功能障碍和子痫前期临床综合征的观点。