Intracellular magnesium homeostasis

Intracellular magnesium homeostasis is the physiological system responsible for maintaining the concentration of magnesium ions (Mg2+) within the cellular environment (Jahnen-Dechent & Ketteler, 2012). As the second most abundant intracellular cation, magnesium serves as a critical cofactor for more than 300 enzymes, particularly those involved in ATP-dependent reactions, DNA synthesis, and protein production (de Baaij et al., 2015). This homeostasis is regulated by a variety of specialized transport proteins, including the TRPM6 and TRPM7 channels, as well as the SLC41A1 and MagT1 transporters, which coordinate the movement of Mg2+ across the plasma membrane and into organelles like the mitochondria (Romani, 2011). Dysregulation of this system is associated with a wide range of pathologies, including cardiac arrhythmias, hypertension, type 2 diabetes, and neurological disorders (de Baaij et al., 2015). Therapeutic strategies primarily focus on magnesium supplementation using various salts to correct deficiencies or managing the side effects of drugs like proton pump inhibitors and diuretics that can deplete magnesium levels (StatPearls, 2023). Ensuring proper magnesium balance is essential for maintaining cellular stability, signaling pathways, and overall metabolic health.

Other names

Magnesium homeostasisCellular magnesium regulationMg2+ homeostasisMagnesium balance

Restoration of physiological magnesium levels through exogenous supplementation or inhibition of renal excretion to maintain enzymatic and electrical stability (StatPearls, 2023).