4 results match your criteria: "Beijing Chaoyang Hospital-Affiliate of Beijing Capital Medical University[Affiliation]"

Aging aggravates nitrate-mediated ROS/RNS changes.

Oxid Med Cell Longev

December 2014

Department of Cardiology, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, Beijing 100029, China.

Nitrates are the most frequently prescribed and utilized drugs worldwide. The elderly are a major population receiving nitrate therapy. Both nitrates and aging can increase in vivo reactive oxygen species (ROS) and reactive nitrogen species (RNS).

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Inhibition of Fas-associated death domain-containing protein (FADD) protects against myocardial ischemia/reperfusion injury in a heart failure mouse model.

PLoS One

June 2014

Center for Translational Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania, United States of America ; Department of Gerontology, Beijing Chaoyang Hospital-Affiliate of Beijing Capital Medical University, Beijing, China.

Aim: As technological interventions treating acute myocardial infarction (MI) improve, post-ischemic heart failure increasingly threatens patient health. The aim of the current study was to test whether FADD could be a potential target of gene therapy in the treatment of heart failure.

Methods: Cardiomyocyte-specific FADD knockout mice along with non-transgenic littermates (NLC) were subjected to 30 minutes myocardial ischemia followed by 7 days of reperfusion or 6 weeks of permanent myocardial ischemia via the ligation of left main descending coronary artery.

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Previous studies indicate aging results in significantly decreased cardiac function and increased myocardial apoptosis after myocardial ischemia/reperfusion (MI/R) in humans or rats. The underlying mechanisms of aging-exacerbated effects remain unknown. Reactive oxygen species (ROS) and reactive nitrogen species (RNS) are known to play vital roles in aging-related MI/R injury.

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Article Synopsis
  • The study investigates how postconditioning (postcon) protects the heart from damage after an acute myocardial infarction (AMI) by lowering levels of peroxynitrite (ONOO-) and reducing oxidative stress caused by inducible nitric oxide synthase (iNOS).
  • In clinical trials on AMI patients, postcon was shown to decrease iNOS activity and plasma nitrotyrosine levels, leading to improved heart function compared to control subjects.
  • Animal experiments confirmed these findings, showing that postcon lowered both iNOS activity and myocardial infarct size, while using an iNOS inhibitor mimicked postcon's effects, and an ONOO- donor negated its benefits, indicating that the cardioprotective mechanism involves
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