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10.1152/ajprenal.00288.2012 http://scihub22266oqcxt.onion/10.1152/ajprenal.00288.2012 23427142!ä!23427142 Deprecated: Implicit conversion from float 227.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 227.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 227.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 227.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 227.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 227.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 227.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       Am+J+Physiol+Renal+Physiol 2013 ; 304 (9): F1198-209 Nephropedia Template TP {{tp|p=23427142|t=2013. Loss of WNK3 is compensated for by the WNK1/SPAK axis in the kidney of the mouse |pdf=|usr=}}{{23427142}} gab.com Text Loss of WNK3 is compensated for by the WNK1/SPAK axis in the kidney of the mouse JO: Am J Physiol Renal Physiol http://www.kidney.de/pget.php?&tw=1&pmid=23427142 #FOAvip WNK3 kinase is expressed throughout the nephron and acts as a positive regulator of NKCC2 and NCC in vitro. Here we addressed the in vivo relevance of WNK3 using WNK3-deficient mice. WNK3-/- mice were viable and showed no gross abnormalities. The net tubular function was similar in wild-type (WT) and WNK3-/- mice as assessed by determination of 24-h urine output (1.63 +/- .06 in WT and 1.55 +/- .1 ml in WNK3-/-, n=16; P=0.42) and ambient urine osmolarity (1,804 +/- 62 in WT vs. 1,819 +/- 61 mosmol/kg in WNK3-/-, n=40; P=0.86). Water restriction (48 h) increased urine osmolarity similarly in both genotypes to 3,440 +/- 220 and 3,200 +/- 180 mosmol/kg in WT and WNK3-/- mice, respectively (n=11; P=0.41). The glomerular filtration rate (343 +/- 22 vs. 315 +/- 13 ml/min), renal blood flow (1.35 +/- 0.1 vs. 1.42 +/- 0.04 ml), and plasma renin concentration (94 +/- 18 vs. 80 +/- 13 ng ANG I.ml(-1).h(-1)) were similar between WT and WNK3-/- mice (n=13; P=0.54). WNK1 was markedly upregulated in WNK3-deficient mice, whereas the expression of WNK4 was similar in both genotypes. When the mice were fed a salt-restricted diet [0.02% NaCl (wt/wt)] the levels of pSPAK/OSR1, pNKCC2, and pNCC were enhanced in both genotypes compared with the baseline conditions, with the levels in WNK3-/- exceeding those in WT mice. The upregulation of pSPAK/OSR1, pNKCC2, and pNCC in WNK3-/- mice relative to the levels in WT mice when fed a low-salt diet was paralleled by an increased diuresis in response to hydrochlorothiazide. In summary, the overall relevance of WNK3 for the renal reabsorption of NaCl appears to be limited and can be largely compensated for by the activation of WNK3-independent pathways. Consequently, our data suggest that WNK3 may serve as a member of a kinase network that facilitates the fine-tuning of renal transepithelial NaCl transport. Twit Text FOAVip Loss of WNK3 is compensated for by the WNK1/SPAK axis in the kidney of the mouse ????Am J Physiol Renal Physiol http://www.kidney.de/pget.php?&tw=1&pmid=23427142 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=23427142 #FOAvip English Wikipedia <ref>{{Cite pmid|23427142}}</ref> Loss of WNK3 is compensated for by the WNK1/SPAK axis in the kidney of the mouse #MMPMID23427142 Mederle K; Mutig K; Paliege A; Carota I; Bachmann S; Castrop H; Oppermann M Am J Physiol Renal Physiol 2013[May]; 304 (9): F1198-209 PMID23427142show ga WNK3 kinase is expressed throughout the nephron and acts as a positive regulator of NKCC2 and NCC in vitro. Here we addressed the in vivo relevance of WNK3 using WNK3-deficient mice. WNK3-/- mice were viable and showed no gross abnormalities. The net tubular function was similar in wild-type (WT) and WNK3-/- mice as assessed by determination of 24-h urine output (1.63 +/- .06 in WT and 1.55 +/- .1 ml in WNK3-/-, n=16; P=0.42) and ambient urine osmolarity (1,804 +/- 62 in WT vs. 1,819 +/- 61 mosmol/kg in WNK3-/-, n=40; P=0.86). Water restriction (48 h) increased urine osmolarity similarly in both genotypes to 3,440 +/- 220 and 3,200 +/- 180 mosmol/kg in WT and WNK3-/- mice, respectively (n=11; P=0.41). The glomerular filtration rate (343 +/- 22 vs. 315 +/- 13 ml/min), renal blood flow (1.35 +/- 0.1 vs. 1.42 +/- 0.04 ml), and plasma renin concentration (94 +/- 18 vs. 80 +/- 13 ng ANG I.ml(-1).h(-1)) were similar between WT and WNK3-/- mice (n=13; P=0.54). WNK1 was markedly upregulated in WNK3-deficient mice, whereas the expression of WNK4 was similar in both genotypes. When the mice were fed a salt-restricted diet [0.02% NaCl (wt/wt)] the levels of pSPAK/OSR1, pNKCC2, and pNCC were enhanced in both genotypes compared with the baseline conditions, with the levels in WNK3-/- exceeding those in WT mice. The upregulation of pSPAK/OSR1, pNKCC2, and pNCC in WNK3-/- mice relative to the levels in WT mice when fed a low-salt diet was paralleled by an increased diuresis in response to hydrochlorothiazide. In summary, the overall relevance of WNK3 for the renal reabsorption of NaCl appears to be limited and can be largely compensated for by the activation of WNK3-independent pathways. Consequently, our data suggest that WNK3 may serve as a member of a kinase network that facilitates the fine-tuning of renal transepithelial NaCl transport. |Animals[MESH] |Biological Transport/physiology[MESH] |Female[MESH] |Glomerular Filtration Rate/physiology[MESH] |Kidney/blood supply/*physiology[MESH] |Male[MESH] |Mice[MESH] |Mice, Inbred C57BL[MESH] |Mice, Knockout[MESH] |Minor Histocompatibility Antigens[MESH] |Models, Animal[MESH] |Protein Serine-Threonine Kinases/*deficiency/genetics/*physiology[MESH] |Regional Blood Flow/physiology[MESH] |Signal Transduction/*physiology[MESH] |Sodium Chloride/metabolism[MESH] |Sodium-Potassium-Chloride Symporters/physiology[MESH] |Solute Carrier Family 12, Member 1[MESH]Loss of WNK3 is compensated for by the WNK1/SPAK axis in the kidney of(epmc).pdf DeepDyve Pubget Overpricing