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10.1073/pnas.1200947109 http://scihub22266oqcxt.onion/10.1073/pnas.1200947109 22550170!3356635!22550170     free     free     free Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       Proc+Natl+Acad+Sci+U+S+A 2012 ; 109 (20): 7929-34 Nephropedia Template TP {{tp|p=22550170|t=2012. Activation of the renal Na+:Cl- cotransporter by angiotensin II is a WNK4-dependent process |pdf=|usr=}}{{22550170}} gab.com Text Activation of the renal Na+:Cl- cotransporter by angiotensin II is a WNK4-dependent process JO: Proc Natl Acad Sci U S A http://www.kidney.de/pget.php?&tw=1&pmid=22550170 #FOAvip Pseudohypoaldosteronism type II is a salt-sensitive form of hypertension with hyperkalemia in humans caused by mutations in the with-no-lysine kinase 4 (WNK4). Several studies have shown that WNK4 modulates the activity of the renal Na(+)Cl(-) cotransporter, NCC. Because the renal consequences of WNK4 carrying pseudoaldosteronism type II mutations resemble the response to intravascular volume depletion (promotion of salt reabsorption without K(+) secretion), a condition that is associated with high angiotensin II (AngII) levels, it has been proposed that AngII signaling might affect WNK4 modulation of the NCC. In Xenopus laevis oocytes, WNK4 is required for modulation of NCC activity by AngII. To demonstrate that WNK4 is required in the AngII-mediated regulation of NCC in vivo, we used a total WNK4-knockout mouse strain (WNK4(-/-)). WNK4 mRNA and protein expression were absent in WNK4(-/-) mice, which exhibited a mild Gitelman-like syndrome, with normal blood pressure, increased plasma renin activity, and reduced NCC expression and phosphorylation at T-58. Immunohistochemistry revealed normal morphology of the distal convoluted tubule with reduced NCC expression. Low-salt diet or infusion of AngII for 4 d induced phosphorylation of STE20/SPS1-related proline/alanine-rich kinase (SPAK) and of NCC at S-383 and T-58, respectively, in WNK4(+/+) but not WNK4(-/-) mice. Thus, the absence of WNK4 in vivo precludes NCC and SPAK phosphorylation promoted by a low-salt diet or AngII infusion, suggesting that AngII action on the NCC occurs via a WNK4-SPAK-dependent signaling pathway. Additionally, stimulation of aldosterone secretion by AngII, but not by a high-K(+) diet, was impaired in WNK4(-/-) mice. Twit Text FOAVip Activation of the renal Na+:Cl- cotransporter by angiotensin II is a WNK4-dependent process ????Proc Natl Acad Sci U S A http://www.kidney.de/pget.php?&tw=1&pmid=22550170 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=22550170 #FOAvip English Wikipedia <ref>{{Cite pmid|22550170}}</ref> Activation of the renal Na+:Cl- cotransporter by angiotensin II is a WNK4-dependent process #MMPMID22550170 Castaneda-Bueno M; Cervantes-Perez LG; Vazquez N; Uribe N; Kantesaria S; Morla L; Bobadilla NA; Doucet A; Alessi DR; Gamba G Proc Natl Acad Sci U S A 2012[May]; 109 (20): 7929-34 PMID22550170show ga Pseudohypoaldosteronism type II is a salt-sensitive form of hypertension with hyperkalemia in humans caused by mutations in the with-no-lysine kinase 4 (WNK4). Several studies have shown that WNK4 modulates the activity of the renal Na(+)Cl(-) cotransporter, NCC. Because the renal consequences of WNK4 carrying pseudoaldosteronism type II mutations resemble the response to intravascular volume depletion (promotion of salt reabsorption without K(+) secretion), a condition that is associated with high angiotensin II (AngII) levels, it has been proposed that AngII signaling might affect WNK4 modulation of the NCC. In Xenopus laevis oocytes, WNK4 is required for modulation of NCC activity by AngII. To demonstrate that WNK4 is required in the AngII-mediated regulation of NCC in vivo, we used a total WNK4-knockout mouse strain (WNK4(-/-)). WNK4 mRNA and protein expression were absent in WNK4(-/-) mice, which exhibited a mild Gitelman-like syndrome, with normal blood pressure, increased plasma renin activity, and reduced NCC expression and phosphorylation at T-58. Immunohistochemistry revealed normal morphology of the distal convoluted tubule with reduced NCC expression. Low-salt diet or infusion of AngII for 4 d induced phosphorylation of STE20/SPS1-related proline/alanine-rich kinase (SPAK) and of NCC at S-383 and T-58, respectively, in WNK4(+/+) but not WNK4(-/-) mice. Thus, the absence of WNK4 in vivo precludes NCC and SPAK phosphorylation promoted by a low-salt diet or AngII infusion, suggesting that AngII action on the NCC occurs via a WNK4-SPAK-dependent signaling pathway. Additionally, stimulation of aldosterone secretion by AngII, but not by a high-K(+) diet, was impaired in WNK4(-/-) mice. |Aldosterone/metabolism[MESH] |Angiotensin II/administration & dosage/*metabolism[MESH] |Animals[MESH] |Blood Pressure[MESH] |DNA Primers/genetics[MESH] |Diet, Sodium-Restricted[MESH] |Immunoblotting[MESH] |Immunohistochemistry[MESH] |Infusion Pumps, Implantable[MESH] |Kidney/*metabolism[MESH] |Mice[MESH] |Mice, Knockout[MESH] |Phosphorylation[MESH] |Protein Serine-Threonine Kinases/genetics/*metabolism[MESH] |Pseudohypoaldosteronism/*metabolism[MESH] |Real-Time Polymerase Chain Reaction[MESH] |Renin/blood[MESH] |Sodium Chloride Symporters/*metabolism[MESH]Activation of the renal Na+:Cl- cotransporter by angiotensin II is a (epmc).pdf DeepDyve Pubget Overpricing