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- W1980748254 abstract "Low nephron number is a recently identified cause of arterial hypertension. We set out to test the effect of nephron number dosing on blood pressure and cardiorenal damage including left ventricular (LV) remodeling and function. Because exact determination of nephron number in vivo is currently not possible, we combined the Munich Wistar Frömter (MWF) genetic rat model of inborn nephron deficit with the 5/6 renal ablation model (Nx).To obtain distinct levels of nephron number dose (NND), rats underwent either sham-operation (Wistar-Sham NND 1.0, and MWF-Sham NND 0.6, n = 15, respectively) or 5/6 renal ablation (Nx, Wistar-Nx NND 0.17, and MWF-Nx NND 0.1, n = 20, respectively). Two additional groups were treated orally for 4 weeks with 1 mg/kg/day ramipril (Wistar-Nx-ACEI and MWF-Nx-ACEI, n = 15, respectively).Systolic blood pressure (SBP), LV hypertrophy, mRNA expression of atrial natriuretic factor, LV contractility, and relaxation were exponentially correlated with NND (P < 0.0001, respectively). Creatinine clearance (Cl(Cr)) decreased, albuminuria, renal interstitial fibrosis, tubulointerstitial damage, and glomerulosclerosis index increased with lowering NND in both Wistar-Nx (NND 0.17) and MWF-Nx (NND 0.1) animals. LV perivascular and interstitial fibrosis and sarcoplasmic reticular (SR) Ca(2+) cycling were not directly related to NND. Angiotensin-converting enzyme (ACE) inhibition with ramipril demonstrated strong cardio- and renoprotective effects even in the setting of very low NND of 0.1 in MWF-Nx animals.These data demonstrate that reduced nephron number is a significant, independent determinant of blood pressure, cardiorenal damage, and LV dysfunction in a direct dose-dependent way." @default.
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- W1980748254 date "2011-04-01" @default.
- W1980748254 modified "2023-10-01" @default.
- W1980748254 title "Impact of Nephron Number Dosing on Cardiorenal Damage and Effects of ACE Inhibition" @default.
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- W1980748254 doi "https://doi.org/10.1038/ajh.2010.206" @default.
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