Journal article

Chronic urotensin II receptor antagonist treatment does not alter hypertrophy or fibrosis in a rat model of pressure-overload hypertrophy

Andrew R Kompa, Bing H Wang, Arintaya Phrommintikul, Pei Y Ho, Darren J Kelly, David J Behm, Stephen A Douglas, Henry Krum



Urotensin II (UII) is a potential mediator in the pathogenesis of cardiovascular disease, and inhibition of its actions at the urotensin receptor (UT) has been shown to improve cardiac function and structural changes of the myocardium in a model of myocardial infarction. In this study we utilized a model of pressure-overload hypertrophy induced by abdominal aortic constriction (AAC) which resulted in hypertrophy, increased fibrosis and impaired diastolic and systolic function. These changes were associated with a 4-fold increase in UII protein expression in the myocardium. Treatment of animals with a selective UT (SB-657510) antagonist for 20 weeks at a dose of 1500 ppm did not improve cardi..

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