Potassium, magnesium and membranes. Review of present status and new findings.
The interactions between magnesium, potassium and various membranes were examined. The different membranes chosen were: artificial, erythrocyte, cardiac, muscular, nervous, gallbladder, urinary bladder, mitochondrial and human amniotic. In general, Mg++ and K+ act on the cellular adhesion and on the stability of the membrane by forming bonds between the charges of the lipids and the proteins. Mg++ acts on the passive K+ transfer either by activation or inhibition. In addition, Mg++ acts on the K+ active transfer: the presence of Mg++ is essential to maintain the activity of the membrane (Na+K) adenosine triphosphatase (ATPase).
D000650:Amnion / Q000378:metabolism; D000818:Animals; D002462:Cell Membrane / Q000378:metabolism*; D004910:Erythrocyte Membrane / Q000378:metabolism; D005260:Female; D005704:Gallbladder / Q000378:metabolism; D006801:Humans; D007425:Intracellular Membranes / Q000378:metabolism*; D007700:Kinetics; D008051:Lipid Bilayers; D008081:Liposomes; D008274:Magnesium / Q000378:metabolism*; D008567:Membranes, Artificial; D008928:Mitochondria / Q000378:metabolism; D008954:Models, Biological; D009132:Muscles / Q000378:metabolism; D009206:Myocardium / Q000378:metabolism; D009420:Nervous System / Q000378:metabolism; D011188:Potassium / Q000378:metabolism*; D011247:Pregnancy; D011690:Purkinje Fibers / Q000378:metabolism; D001743:Urinary Bladder / Q000378:metabolism
D008051:Lipid Bilayers; D008081:Liposomes; D008567:Membranes, Artificial; D008274:Magnesium; D011188:Potassium