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- W2034002539 abstract "Acute ischemia followed by prolonged reperfusion has been shown to induce cardiomyocyte apoptosis. In this report, we demonstrate that myocardial adaptation to ischemia induced by repeated cyclic episodes of short‐term ischemia each followed by another short duration of reperfusion reduced cardiomyocyte apoptosis and DNA fragmentation. This was associated with the induction of the expression of Bcl‐2 mRNA and translocation and activation of NF‐κB. Another transcription factor, AP‐1, remained unaffected by repeated ischemia and reperfusion, but exhibited significant upregulation by a single episode of 30 min ischemia followed by 2 h of reperfusion. This activation of AP‐1 was inhibited by a scavenger of oxygen free radicals, DMTU. Thirty minutes ischemia and 120 min reperfusion downregulated the induction of the expression of Bcl‐2 mRNA, but moderately activated NF‐κB binding activity. This was associated with an increased number of apoptotic cells and DNA fragmentation in cardiomyocytes which were attenuated by DMTU. The results of this study indicate that Bcl‐2, AP‐1 and NF‐κB differentially regulate cardiomyocyte apoptosis mediated by acute ischemia and prolonged reperfusion." @default.
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- W2034002539 date "1999-01-29" @default.
- W2034002539 modified "2023-10-15" @default.
- W2034002539 title "Differential regulation of Bcl-2, AP-1 and NF-κB on cardiomyocyte apoptosis during myocardial ischemic stress adaptation" @default.
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- W2034002539 doi "https://doi.org/10.1016/s0014-5793(98)01719-0" @default.
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