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- W2004428815 abstract "Cardiolipin peroxidation plays a critical role in mitochondrial cytochrome c release and subsequent apoptotic process. Mitochondrial pore transition (MPT) is considered as an important step in this process. In this work, the effect of peroxidized cardiolipin on MPT induction and cytochrome c release in rat heart mitochondria was investigated. Treatment of mitochondria with micromolar concentrations of cardiolipin hydroperoxide (CLOOH) resulted in a dose-dependent matrix swelling, DeltaPsi collapse, release of preaccumulated Ca2+ and release of cytochrome c. All these events were inhibited by cyclosporin A and bongkrekic acid, indicating that peroxidized cardiolipin behaves as an inducer of MPT. Ca2+ accumulation by mitochondria was required for this effect. ANT (ADP/ATP translocator) appears to be involved in the CLOOH-dependent MPT induction, as suggested by the modulation by ligands and inhibitors of adenine nucleotide translocator (ANT). Together, these results indicate that peroxidized cardiolipin lowers the threshold of Ca2+ for MPT induction and cytochrome c release. This synergistic effect of Ca2+ and peroxidized cardiolipin on MPT induction and cytochrome c release in mitochondria, might be important in regulating the initial phase of apoptosis and also may have important implications in those physiopathological situations, characterized by both Ca2+ and peroxidized cardiolipin accumulation in mitochondria, such as aging, ischemia/reperfusion and other degenerative diseases." @default.
- W2004428815 created "2016-06-24" @default.
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- W2004428815 date "2006-10-27" @default.
- W2004428815 modified "2023-09-23" @default.
- W2004428815 title "Interaction of peroxidized cardiolipin with rat-heart mitochondrial membranes: Induction of permeability transition and cytochrome<i>c</i>release" @default.
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- W2004428815 doi "https://doi.org/10.1016/j.febslet.2006.10.036" @default.
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