Apaf-1 Pyroptosome Senses Mitochondrial Permeability Transition

Mitochondrial Permeability Transition in Rat

42 Onset of the mitochondrial permeability transition (MPT) is the penultimate event 43 leading to lethal cellular ischemia/reperfusion injury, but the mechanisms precipitating 44 the MPT after reperfusion remain unclear. Here, we investigated the role of 45 mitochondrial free Ca and reactive oxygen species (ROS) in pHand MPT-dependent 46 reperfusion injury to hepatocytes. Cultured rat hepatocy...

Postconditioning inhibits mitochondrial permeability transition.

BACKGROUND Brief periods of ischemia performed just at the time of reperfusion can reduce infarct size, a phenomenon called "postconditioning." After reflow, opening of the mitochondrial permeability transition pore (mPTP) has been involved in lethal reperfusion injury. We hypothesized that postconditioning may modulate mPTP opening. METHODS AND RESULTS Anesthetized open-chest rabbits underwe...

The mitochondrial permeability transition pore.

This chapter reviews recent advances in the identification of the structural elements of the permeability transition pore. The discovery that cyclosporin A (CsA) inhibits the pore proved instrumental. Various approaches indicate that CsA blocks the pore by binding to cyclophilin (CyP)-D. In particular, covalent labelling of CyP-D in situ by a photoactive CsA derivative has shown that pore ligan...

Mitochondrial Transition Pore and Preconditioning 1 Preconditioning Protects by Inhibiting the Mitochondrial Permeability Transition

Mitochondrial permeability transition pore: an enigmatic gatekeeper

Mitochondrial permeability transition pore (MPTP) is a transient structure formed in the inner mitochondrial membrane (IMM) upon oxidative challenge of the organelle. The transition is a Ca 2+ -dependent increase of permeability of IMM leading to loss of transmembrane potential (∆ψm), mitochondrial swelling and, finally, rupture of outer mitochondrial membrane leading to release of factors caus...