Dirks J H, Quamme G A
Adv Exp Med Biol. 1980;128:41-9. doi: 10.1007/978-1-4615-9167-2_5.
Magnesium reabsorption occurs throughout the proximal, loop and distal segments of the nephron. The proximal tubule is less permeable to magnesium than calcium and sodium and most of the filtered load is reclaimed in the thick ascending limb of the loop of Henle. Thus one would expect that factors which regulate magnesium reabsorption should act within this important segment. No single hormone or agent appears to regulate magnesium reabsorption sufficiently to account for urinary changes; rather it appears to be a number of intracellular and extracellular factors acting in concert to effect day to day magnesium homeostasis.
镁的重吸收发生在整个肾单位的近端、髓袢和远端节段。近端小管对镁的通透性低于钙和钠，大部分滤过的镁负荷在髓袢升支粗段被重吸收。因此，可以预期调节镁重吸收的因素应该在这个重要节段内起作用。似乎没有单一的激素或物质能够充分调节镁的重吸收以解释尿液变化；相反，似乎是多种细胞内和细胞外因素共同作用以实现日常的镁稳态。
