PMID: 11922906Mar 30, 2002Paper

Chronic endothelin receptor blockade prevents renal vasoconstriction and sodium retention in rats with chronic heart failure

Cardiovascular Research
Shuang-Shuang DingMartine Clozel

Abstract

Importance of endothelin in mediating the chronic renal alterations of chronic heart failure was studied in rats chronically treated with bosentan after myocardial infarction. Rats were subjected to coronary artery ligation and were treated for 8 weeks with placebo or bosentan, a dual ET(A) and ET(B) receptor antagonist, (approximately 100 mg/kg/day) as food admix. Sham-operated rats served as normal controls. Cardiac and renal functions were measured at the end of 8-week treatment. Bosentan significantly reduced the elevated left ventricular end-diastolic pressure (from 26.6+/-3.3 to 11.4+/-2.2 mmHg, P<0.001) and the increased heart-to-body-weight ratio seen in untreated rats with myocardial infarction. Bosentan prevented the marked increase in renal vascular resistance (bosentan, 7.7+/-0.6; untreated, 15.6+/-2.5 mmHg/ml/min; P<0.001). This led to a significant increase in renal plasma flow resulting in a decrease in filtration fraction. Bosentan furthermore increased urinary sodium excretion. Prolonged ET receptor blockade in rats with myocardial infarction has chronic renal vasodilatory effect and improves renal sodium excretory function. Thus, dual ET antagonists such as bosentan might be useful in the treatment of the prog...Continue Reading

Citations

Dec 29, 2010·International Journal of Nephrology·Irmgard MühlbergerPaul Perco
Nov 18, 2009·Progress in Cardiovascular Diseases·Stefano F RimoldiFranz Messerli
Oct 19, 2006·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Maria Cristina BrenoNorma Yamanouye
Aug 22, 2006·European Journal of Clinical Investigation·W Neuhofer, D Pittrow
Nov 14, 2003·American Journal of Physiology. Heart and Circulatory Physiology·Sophie MotteKathleen McEntee
Aug 24, 2012·American Journal of Physiology. Renal Physiology·Lennart G BongartzJaap A Joles

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