Viagra May Shield Heart From Blood Pressure Damage

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"The evidence is piling up that unbridled Gq signaling is driving a central biological chain reaction in heart failure, and that by extending the protective effects of RGS2 or by developing a test for its presence, researchers can develop new therapies or improve existing ones, including ACE inhibitors and possibly sildenafil, for people with heart failure who will benefit most," Kass said.

Doctors currently use so-called ACE inhibitor and ARB inhibitor drugs to block Gq signaling. These drugs are the most common treatment for heart failure, which afflicts more than 5 million Americans each year, killing more than a quarter million of them, according to the study.

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For more on the symptoms of heart failure, go to American Heart Association.

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-- HealthDay staff