Monoamine oxidases (MAO) in the pathogenesis of heart failure and ischemia/reperfusion injury.
Monoamine oxidases (MAO) in the pathogenesis of heart failure and ischemia/reperfusion injury.
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单胺氧化酶(MAO)在心力衰竭和缺血/再灌注损伤发病机制中的作用。
DOI:
10.1016/j.bbamcr.2010.09.010
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发表时间:
2011-07
期刊:
影响因子:
--
通讯作者:
Paolocci N
中科院分区:
文献类型:
--
作者:
Kaludercic N;Carpi A;Menabò R;Di Lisa F;Paolocci N
Recent evidence highlights monoamine oxidases (MAO) as another prominent source of oxidative stress. MAO are a class of enzymes located in the outer mitochondrial membrane, deputed to the oxidative breakdown of key neurotransmitters such as norepinephrine, epinephrine and dopamine, and in the process generate H2O2. All these monoamines are endowed with potent modulatory effects on myocardial function. Thus, when the heart is subjected to chronic neuro-hormonal and/or peripheral hemodynamic stress, the abundance of circulating/tissue monoamines can make MAO-derived H2O2 production particularly prominent. This is the case of acute cardiac damage due to ischemia/reperfusion injury or, on a more chronic stand, of the transition from compensated hypertrophy to overt ventricular dilation/pump failure. Here, we will first briefly discuss mitochondrial status and contribution to acute and chronic cardiac disorders. We will illustrate possible mechanisms by which MAO activity affects cardiac biology and function, along with a discussion as to their role as a prominent source of reactive oxygen species. Finally, we will speculate on why MAO inhibition might have therapeutic value for treating cardiac affections of ischemic and non-ischemic origin.
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DOI:
10.1073/pnas.0603615103
发表时间:
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影响因子:
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