Effect of the endothelin receptor antagonist CPU0213, and its modulation by rifampin, on cardiac and vascular tissue following chronic isoproterenol treatment

Clinical and Experimental Pharmacology & Physiology
Lu LuoYin Dai

Abstract

1. The aim of the present study was to investigate the effects of the endothelin (ET) receptor antagonist CPU0213 on cardiac and vascular tissues after impairment by chronic isoproterenol treatment. Because rifampin reduces plasma concentrations of CPU0213, the modulation of the effects of CPU0213 by rifampin was also investigated. 2. Thirty rats were randomly divided into five groups as follows: (i) control; (ii) isoproterenol treated (1 mg/kg, s.c., for 10 days); (iii) isoproterenol treated with a single injection of CPU0213 (30 mg/kg, s.c., on Day 11); (iv) isoproterenol treated with a single injection of rifampin (50 mg/kg, p.o., on Day 11); and (v) isoproterenol treated with rifampin gvien 3 h before CPU0213 on Day 11. Serum concentrations of CPU0213, haemodynamic and biochemical parameters, mRNA and protein expression levels of the ET(A) receptor (ET(A)R), calstabin 2 (FKBP12.6) and sarcoplasmic/endoplasmic reticulum calcium ATPase (SERCA2a), and vasoactivity of the thoracic aorta were determined. 3. Haemodynamic parameters, serum creatine phosphokinase, lactate dehydrogenase and malondialdehyde levels, mRNA and protein expression of FKBP12.6, SERCA2a and vascular responses were altered following isoproterenol treatment f...Continue Reading

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Citations

Sep 23, 2010·Vascular Health and Risk Management·De-Zai Dai, Yin Dai
Sep 22, 2016·Iranian Red Crescent Medical Journal·Hadi Ansarihadipour, Mohamadreza Bayatiani

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