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10.1152/ajpheart.2000.279.5.H2143 http://scihub22266oqcxt.onion/10.1152/ajpheart.2000.279.5.H2143 11045947!ä!11045947 Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\11045947.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117       Am+J+Physiol+Heart+Circ+Physiol 2000 ; 279 (5): H2143-50 Nephropedia Template TP {{tp|p=11045947|t=2000. Inhibition of NHE protects reoxygenated cardiomyocytes independently of anoxic Ca(2+) overload and acidosis |pdf=|usr=}}{{11045947}} gab.com Text Inhibition of NHE protects reoxygenated cardiomyocytes independently of anoxic Ca(2+) overload and acidosis JO: Am J Physiol Heart Circ Physiol http://www.kidney.de/pget.php?&tw=1&pmid=11045947 #FOAvip We investigated the question of whether inhibition of the Na(+)/H(+) exchanger (NHE) during ischemia is protective due to reduction of cytosolic Ca(2+) accumulation or enhanced acidosis in cardiomyocytes. Additionally, the role of the Na(+)-HCO(3)(-) symporter (NBS) was investigated. Adult rat cardiomyocytes were exposed to simulated ischemia and reoxygenation. Cytosolic pH [2', 7'-bis(2-carboxyethyl)-5(6)-carboxyfluorescein (BCECF)], Ca(2+) (fura 2), Na(+) [sodium-binding benzolfuran isophthatlate (SBFI)], and cell length were measured. NHE was inhibited with 3 micromol/l HOE 642 or 1 micromol/l 5-(N-ethyl-N-isopropyl)-amiloride (EIPA), and NBS was inhibited with HEPES buffer. During anoxia in bicarbonate buffer, cells developed acidosis and intracellular Na and Ca (Na(i) and Ca(i), respectively) overload. During reoxygenation cells underwent hypercontracture (44.0 +/- 4.1% of the preanoxic length). During anoxia in bicarbonate buffer, inhibition of NHE had no effect on changes in intracellular pH (pH(i)), Na(i), and Ca(i), but it significantly reduced the reoxygenation-induced hypercontracture (HOE: 61.0 +/- 1.4%, EIPA: 68.2 +/- 1.8%). The sole inhibition of NBS during anoxia was not protective. We conclude that inhibition of NHE during anoxia protects cardiomyocytes against reoxygenation injury independently of cytosolic acidification and Ca(i) overload. Twit Text FOAVip Inhibition of NHE protects reoxygenated cardiomyocytes independently of anoxic Ca(2+) overload and acidosis ????Am J Physiol Heart Circ Physiol http://www.kidney.de/pget.php?&tw=1&pmid=11045947 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=11045947 #FOAvip English Wikipedia <ref>{{Cite pmid|11045947}}</ref> Inhibition of NHE protects reoxygenated cardiomyocytes independently of anoxic Ca(2+) overload and acidosis #MMPMID11045947 Schafer C; Ladilov YV; Schafer M; Piper HM Am J Physiol Heart Circ Physiol 2000[Nov]; 279 (5): H2143-50 PMID11045947show ga We investigated the question of whether inhibition of the Na(+)/H(+) exchanger (NHE) during ischemia is protective due to reduction of cytosolic Ca(2+) accumulation or enhanced acidosis in cardiomyocytes. Additionally, the role of the Na(+)-HCO(3)(-) symporter (NBS) was investigated. Adult rat cardiomyocytes were exposed to simulated ischemia and reoxygenation. Cytosolic pH [2', 7'-bis(2-carboxyethyl)-5(6)-carboxyfluorescein (BCECF)], Ca(2+) (fura 2), Na(+) [sodium-binding benzolfuran isophthatlate (SBFI)], and cell length were measured. NHE was inhibited with 3 micromol/l HOE 642 or 1 micromol/l 5-(N-ethyl-N-isopropyl)-amiloride (EIPA), and NBS was inhibited with HEPES buffer. During anoxia in bicarbonate buffer, cells developed acidosis and intracellular Na and Ca (Na(i) and Ca(i), respectively) overload. During reoxygenation cells underwent hypercontracture (44.0 +/- 4.1% of the preanoxic length). During anoxia in bicarbonate buffer, inhibition of NHE had no effect on changes in intracellular pH (pH(i)), Na(i), and Ca(i), but it significantly reduced the reoxygenation-induced hypercontracture (HOE: 61.0 +/- 1.4%, EIPA: 68.2 +/- 1.8%). The sole inhibition of NBS during anoxia was not protective. We conclude that inhibition of NHE during anoxia protects cardiomyocytes against reoxygenation injury independently of cytosolic acidification and Ca(i) overload. |Amiloride/*analogs & derivatives/pharmacology[MESH] |Animals[MESH] |Anti-Arrhythmia Agents/pharmacology[MESH] |Calcium/*metabolism[MESH] |Carrier Proteins/antagonists & inhibitors/metabolism[MESH] |Cell Hypoxia/drug effects[MESH] |Cells, Cultured[MESH] |Cytosol/metabolism[MESH] |Fluorescent Dyes[MESH] |Guanidines/pharmacology[MESH] |Hydrogen-Ion Concentration/drug effects[MESH] |Magnesium/metabolism[MESH] |Male[MESH] |Myocardial Contraction/drug effects[MESH] |Myocardial Ischemia/*metabolism[MESH] |Myocardium/cytology/*metabolism[MESH] |Oxygen/*metabolism/pharmacology[MESH] |Rats[MESH] |Rats, Wistar[MESH] |Sodium-Bicarbonate Symporters[MESH] |Sodium-Hydrogen Exchangers/*antagonists & inhibitors/metabolism[MESH] |Sodium/metabolism[MESH]Inhibition of NHE protects reoxygenated cardiomyocytes independently o(epmc).pdf DeepDyve Pubget Overpricing