Phosphodiesterase-5 inhibitors and the heart: compound cardioprotection?
Phosphodiesterase-5 inhibitors and the heart: compound cardioprotection?
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DOI:
10.1136/heartjnl-2017-312865
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发表时间:
2018-08
期刊:
影响因子:
--
通讯作者:
Trafford AW
中科院分区:
文献类型:
--
作者:
Hutchings DC;Anderson SG;Caldwell JL;Trafford AW
Novel cardioprotective agents are needed in both heart failure (HF) and myocardial infarction. Increasing evidence from cellular studies and animal models indicate protective effects of phosphodiesterase-5 (PDE5) inhibitors, drugs usually reserved as treatments of erectile dysfunction and pulmonary arterial hypertension. PDE5 inhibitors have been shown to improve contractile function in systolic HF, regress left ventricular hypertrophy, reduce myocardial infarct size and suppress ischaemia-induced ventricular arrhythmias. Underpinning these actions are complex but increasingly understood cellular mechanisms involving the cyclic GMP activation of protein kinase-G in both cardiac myocytes and the vasculature. In clinical trials, PDE5 inhibitors improve symptoms and ventricular function in systolic HF, and accumulating epidemiological data indicate a reduction in cardiovascular events and mortality in PDE5 inhibitor users at high cardiovascular risk. Here, we focus on the translation of underpinning basic science to clinical studies and report that PDE5 inhibitors act through a number of cardioprotective mechanisms, including a direct myocardial action independent of the vasculature. We conclude that future clinical trials should be designed with these mechanisms in mind to identify patient subsets that derive greatest treatment benefit from these novel cardioprotective agents.
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DOI:
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发表时间:
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期刊:
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影响因子:
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