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New data from studies bolsters case for using aldosterone antagonists in heart failure
Date:9/19/2011

t will discuss the Treatment of Preserved Cardiac Function Heart Failure with an Aldosterone Antagonist (TOPCAT) study, a multi-center, international trial of spironolactone that began in 2006 and is still recruiting treatment centers and enrolling participants. Patients in this study have heart failure but have not experienced disturbed function in the heart's ventricles.

Hyperkalemia Remains a Concern

Although there is substantial evidence of the benefits of aldosterone antagonists, hyperkalemia remains a concern. To that end, researchers are currently investigating a compound called RLY5016 that is designed to prevent or treat hyperkalemia by binding to potassium and pulling it out of the blood. However, the compound is only in Phase II clinical trials and will not be ready for review by the Food and Drug Administration for several years.

Dr. Pitt is cautiously hopeful. "Many of the people who are at risk for cardiovascular death, such as those with a history of diabetes or high blood pressure, are not treated with these drugs because of the risk of hyperkalemia," he said. "Ideally this compound would allow us to continue to use aldosterone antagonists in these patient groups, and in people with compromised renal and uretal function, who are at increased risk of hyperkalemia. But it is very early in the investigation and not proven by any means."


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Contact: Donna Krupa
dkrupa@the-aps.org
301-634-7209
American Physiological Society
Source:Eurekalert

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