PMID: 7543452Aug 1, 1995Paper

Nitric oxide synthase inhibition in spontaneously hypertensive rats. Systemic, renal, and glomerular hemodynamics

Hypertension
Hidehiko OnoE D Frohlich

Abstract

To investigate the prolonged effects of nitric oxide inhibition on systemic, renal, and glomerular hemodynamics, the effects of the nitric oxide synthase inhibitor N omega-nitro-L-arginine methyl ester (L-NAME) on cardiac index, renal micropuncture results, urinary excretion, and histology were obtained in 20-week-old male spontaneously hypertensive rats (SHR) that were divided into two groups: untreated and L-NAME-treated (50 mg/L), each followed for 3 weeks. Cardiac index and effective renal plasma flow decreased (P < .01) in L-NAME-treated SHR, exhibiting a positive correlation (r = .816; P < .0001). Single-nephron plasma flow (123 +/- 8 versus 80 +/- 12 nL/min per gram; P < .01) and ultrafiltration coefficient (P < .05) were also reduced in L-NAME-treated SHR versus controls. Most notably, the L-NAME-treated SHR had increased afferent (4.4 +/- 0.3 versus 9.5 +/- 1.3 U; P < .01) and efferent (1.4 +/- 0.1 versus 2.7 +/- 0.3 U; P < .01) glomerular arteriolar resistances versus controls. These functional changes were associated with significantly altered afferent arteriolar (P < .001) and glomerular (P < .005) histological injury scores accompanied by marked proteinuria (P < .001). Because of the intense afferent glomerular art...Continue Reading

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Citations

May 5, 2006·Current Hypertension Reports·Xiaoyan ZhouEdward D Frohlich
Feb 26, 2000·Acta Physiologica Scandinavica·D CasellasA Artuso
Apr 1, 2004·Clinical and Experimental Pharmacology & Physiology·Nan-Kuang HsiehHsing I Chen
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May 12, 2009·The Medical Clinics of North America·Edward D Frohlich
Apr 20, 2004·Journal of Cellular and Molecular Medicine·Noemi BarbutoCarlos Alberto Mandarim-de-Lacerda
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Aug 29, 2003·The American Journal of Cardiology·Edward David Frohlich
Dec 6, 2008·American Journal of Hypertension·Wesley W BrooksOscar H L Bing
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Dec 16, 1998·Kidney International·D Rodríguez-Puyol

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