4.5 Article

Protective effects of adenosine on the diabetic myocardium against ischemia-reperfusion injury: Role of calpain

Journal

MEDICAL HYPOTHESES
Volume 79, Issue 4, Pages 462-464

Publisher

CHURCHILL LIVINGSTONE
DOI: 10.1016/j.mehy.2012.06.022

Keywords

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Funding

  1. National Natural Science Foundation of China [81102687, 30971196]
  2. Xijing Hospital [XJZT10M12]
  3. Social Development Project of Shaanxi Province [2012k15-02-01]

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Myocardial ischemia/reperfusion injury (I/RI) is the principal cause of mortality and morbidity in diabetic patients undergoing cardiac surgery. However, there is no specific measure available to protect diabetic hearts in this clinical setting. Our clinical studies showed that adenosine pre-treatment or post-treatment and adding adenosine to cardioplegia solution had significant myocardial protective effects in patients undergoing cardiac surgery. However, the specific protective effects and mechanisms of adenosine in diabetic myocardial I/RI are not clear. Calpain is an important proteolytic enzyme in the myocardium. Studies show that the activation of calpain is an injury factor in not only the diabetic myocardium but also myocardial I/RI progression. We therefore hypothesize that adenosine play a protective role in diabetic myocardial I/RI through the inhibition of calpain. (C) 2012 Elsevier Ltd. All rights reserved.

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