Antidiabetic sulphonylureas activate mitochondrial permeability transition in rat skeletal muscle
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چکیده
منابع مشابه
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...
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Cells degrade excess and effete organelles by the process of autophagy. Autophagic stimulation of rat hepatocytes by serum deprivation and glucagon (1 M) caused a fivefold increase of spontaneously depolarizing mitochondria to about 1.5% of total mitochondria after 90 min. Cyclosporin A (CsA, 5 M), an immunosuppressant that blocks the mitochondrial permeability transition (MPT), prevented this ...
متن کاملPostconditioning 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...
متن کاملThe 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...
متن کاملNIM811, a mitochondrial permeability transition inhibitor, prevents mitochondrial depolarization in small-for-size rat liver grafts.
ATP decreases markedly in small-for-size liver grafts. This study tested if the mitochondrial permeability transition (MPT) underlies dysfunction of small-for-size livers. Half-size livers were implanted into recipients of about twice the donor weight, resulting in quarter-size liver grafts. NIM811 (5 microM), a nonimmunosuppressive MPT inhibitor was added to the storage solutions. Mitochondria...
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ژورنال
عنوان ژورنال: British Journal of Pharmacology
سال: 2005
ISSN: 0007-1188
DOI: 10.1038/sj.bjp.0706214