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- W2170852425 abstract "Urocortin is a novel cardioprotective agent that can protect cardiac myocytes from the damaging effects of ischemia/reperfusion both in culture and in the intact heart and is effective when given at reperfusion.We have analyzed global changes in gene expression in cardiac myocytes after urocortin treatment using gene chip technology. We report that urocortin specifically induces enhanced expression of the Kir 6.1 cardiac potassium channel subunit. On the basis of this finding, we showed that the cardioprotective effect of urocortin both in isolated cardiac cells and in the intact heart is specifically blocked by both generalized and mitochondrial-specific K(ATP) channel blockers, whereas the cardioprotective effect of cardiotrophin-1 is unaffected. Conversely, inhibiting the Kir 6.1 channel subunit greatly enhances cardiac cell death after ischemia.This is, to our knowledge, the first report of the altered expression of a K(ATP) channel subunit induced by a cardioprotective agent and demonstrates that K(ATP) channel opening is essential for the effect of this novel cardioprotective agent." @default.
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- W2170852425 date "2002-09-17" @default.
- W2170852425 modified "2023-09-27" @default.
- W2170852425 title "K <sub>ATP</sub> Channel Gene Expression Is Induced by Urocortin and Mediates Its Cardioprotective Effect" @default.
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- W2170852425 doi "https://doi.org/10.1161/01.cir.0000028424.02525.ae" @default.
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