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World J Gastroenterol. Jan 14, 2023; 29(2): 332-342
Published online Jan 14, 2023. doi: 10.3748/wjg.v29.i2.332
Figure 4
Figure 4 Ovarian cancer G protein-coupled receptor 1 and acid-sensing ion-channel 1a modulate intestinal magnesium absorption. Activation of ovarian cancer G protein-coupled receptor 1 (OGR1) triggers the phospholipase C (PLC)–protein kinase C (PKC) signaling pathway to activate intestinal magnesium (Mg2+) absorption. Activation of acid-sensing ion-channel 1a (ASIC1a) activates intracellular calcium (Ca2+) signaling to induce mucosal bicarbonate secretion in a cystic fibrosis transmembrane conductance regulator (CFTR)-dependent mechanism. Secreted bicarbonate (HCO3) reduces free soluble Mg2+ and suppresses intestinal Mg2+ absorption. H: Hydrogen.