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10.1016/s0014-2999(02)02272-0 http://scihub22266oqcxt.onion/10.1016/s0014-2999(02)02272-0 12231382!ä!12231382 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 247.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       Eur+J+Pharmacol 2002 ; 451 (2): 133-9 Nephropedia Template TP {{tp|p=12231382|t=2002. Up-regulation of Na+-dependent Mg2+ transport by nitric oxide and cyclic GMP pathway in renal epithelial cells |pdf=|usr=}}{{12231382}} gab.com Text Up-regulation of Na+-dependent Mg2+ transport by nitric oxide and cyclic GMP pathway in renal epithelial cells JO: Eur J Pharmacol http://www.kidney.de/pget.php?&tw=1&pmid=12231382 #FOAvip A putative, Na(+)-dependent Mg(2+) transport pathway controls the intracellular free Mg(2+) concentration ([Mg(2+)](i)) in various mammalian cells. The characteristics of this Mg(2+) transport pathway have not been clarified. Herein, we examined the regulatory mechanism of Na(+)-dependent Mg(2+) efflux in renal epithelial NRK-52E cells. Mg(2+) removal from the extracellular bathing solution induced an Na(+)-dependent [Mg(2+)](i) decrease in Mg(2+) (5 mM)-loaded cells but not in control cells. Amiloride inhibited the [Mg(2+)](i) decrease in a dose-dependent manner (IC(50) = 3 microM). Similarly, atomic absorption spectrophotometry showed that Mg(2+) removal decreased intracellular Mg(2+) content, while it increased Na(+) content. Calphostin C (1 microM), a protein kinase C inhibitor, and genistein, a tyrosine kinase inhibitor (10 microM), blocked the [Mg(2+)](i) decrease. The [Mg(2+)](i) decrease was accompanied by an increase in intracellular nitric oxide (NO) and cyclic GMP contents. (E)-4-methyl-2-[(E)-hydoxyimino]-5-nitro-6-methoxy-3-hexenamide (0.1 mM), an NO donor, and 8-bromo-cyclic GMP (0.1 mM), a membrane-permeable cyclic GMP analogue, accelerated the [Mg(2+)](i) decrease. In contrast, N(G)-monomethyl-L-arginine (L-NMMA, 0.1 mM), an NO competitive inhibitor, and 1H-[1,2,4]oxadiazolo[4,3-a]quinoxaline-1-one (ODQ, 10 microM), an NO-sensitive guanylate cyclase inhibitor, significantly blocked the [Mg(2+)](i) decrease. These results indicate that a decrease in extracellular Mg(2+) concentration induces the production of NO and cyclic GMP, which leads to the up-regulation of Na(+)-dependent Mg(2+) efflux. Twit Text FOAVip Up-regulation of Na+-dependent Mg2+ transport by nitric oxide and cyclic GMP pathway in renal epithelial cells ????Eur J Pharmacol http://www.kidney.de/pget.php?&tw=1&pmid=12231382 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=12231382 #FOAvip English Wikipedia <ref>{{Cite pmid|12231382}}</ref> Up-regulation of Na+-dependent Mg2+ transport by nitric oxide and cyclic GMP pathway in renal epithelial cells #MMPMID12231382 Ikari A; Nakajima K; Taki S; Suketa Y Eur J Pharmacol 2002[Sep]; 451 (2): 133-9 PMID12231382show ga A putative, Na(+)-dependent Mg(2+) transport pathway controls the intracellular free Mg(2+) concentration ([Mg(2+)](i)) in various mammalian cells. The characteristics of this Mg(2+) transport pathway have not been clarified. Herein, we examined the regulatory mechanism of Na(+)-dependent Mg(2+) efflux in renal epithelial NRK-52E cells. Mg(2+) removal from the extracellular bathing solution induced an Na(+)-dependent [Mg(2+)](i) decrease in Mg(2+) (5 mM)-loaded cells but not in control cells. Amiloride inhibited the [Mg(2+)](i) decrease in a dose-dependent manner (IC(50) = 3 microM). Similarly, atomic absorption spectrophotometry showed that Mg(2+) removal decreased intracellular Mg(2+) content, while it increased Na(+) content. Calphostin C (1 microM), a protein kinase C inhibitor, and genistein, a tyrosine kinase inhibitor (10 microM), blocked the [Mg(2+)](i) decrease. The [Mg(2+)](i) decrease was accompanied by an increase in intracellular nitric oxide (NO) and cyclic GMP contents. (E)-4-methyl-2-[(E)-hydoxyimino]-5-nitro-6-methoxy-3-hexenamide (0.1 mM), an NO donor, and 8-bromo-cyclic GMP (0.1 mM), a membrane-permeable cyclic GMP analogue, accelerated the [Mg(2+)](i) decrease. In contrast, N(G)-monomethyl-L-arginine (L-NMMA, 0.1 mM), an NO competitive inhibitor, and 1H-[1,2,4]oxadiazolo[4,3-a]quinoxaline-1-one (ODQ, 10 microM), an NO-sensitive guanylate cyclase inhibitor, significantly blocked the [Mg(2+)](i) decrease. These results indicate that a decrease in extracellular Mg(2+) concentration induces the production of NO and cyclic GMP, which leads to the up-regulation of Na(+)-dependent Mg(2+) efflux. |Animals[MESH] |Biological Transport/drug effects/physiology[MESH] |Cell Line[MESH] |Cyclic GMP/*metabolism[MESH] |Epithelial Cells/drug effects/*metabolism[MESH] |Kidney/cytology/drug effects/metabolism[MESH] |Magnesium/*metabolism[MESH] |Nitric Oxide/*metabolism[MESH] |Rats[MESH] |Signal Transduction/drug effects/physiology[MESH] |Sodium/*metabolism[MESH]Up-regulation of Na+-dependent Mg2+ transport by nitric oxide and cycl(epmc).pdf DeepDyve Pubget Overpricing