Difference between revisions of "Pasdois 2006 J Bioenerg Biomembr"
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|organism=Rat | |organism=Rat | ||
|tissues=Cardiac Muscle | |tissues=Cardiac Muscle | ||
|preparations=Permeabilized | |preparations=Permeabilized Tissue | ||
|topics=Respiration; OXPHOS; ETS Capacity | |topics=Respiration; OXPHOS; ETS Capacity | ||
|discipline=Biomedicine | |discipline=Biomedicine | ||
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Revision as of 15:34, 26 March 2012
| Pasdois P, Beauvoit B, Tariosse L, Vinassa B, Bonoron-Adèle S, Santos PD (2006) MitoK(ATP)-dependent changes in mitochondrial volume and in complex II activity during ischemic and pharmacological preconditioning of Langendorff-perfused rat heart. J Bioenerg Biomembr 38: 101-112. |
Pasdois P, Beauvoit B, Tariosse L, Vinassa B, Bonoron-Adele S, Santos PD (2006) J. Bioenerg. Biomembr.
Abstract: It has been proposed that activation of the mitochondrial ATP-sensitive potassium channel (mitoKATP) is part of signaling pathways triggering the cardioprotection afforded by ischemic preconditioning of the heart. This work was to analyze the mitochondrial function profile of Langendorff-perfused rat hearts during the different phases of various ischemia-reperfusion protocols. Specifically, skinned fibers of ischemic preconditioned hearts exhibit a decline in the succinate-supported respiration and complex II activity during ischemia, followed by a recovery during reperfusion. Meanwhile, the apparent affinity of respiration for ADP (which reflects the matrix volume expansion) is increased during preconditioning stimulus and, to a larger extent, during prolonged ischemia. This evolution pattern is mimicked by diazoxide and abolished by 5-hydroxydecanoate. It is concluded that opening the mitoKATP channel mediates the preservation of mitochondrial structure-function via a mitochondrial matrix shrinkage and a reversible inactivation of complex II during prolonged ischemic insult. • Keywords: MitokATP, Diazoxide, Ischemic preconditioning, Succinate dehydrogenase, Complex II
• O2k-Network Lab: FR_Pessak_Beauvoit B
Labels:
Stress:Ischemia-Reperfusion; Preservation"Ischemia-Reperfusion; Preservation" is not in the list (Cell death, Cryopreservation, Ischemia-reperfusion, Permeability transition, Oxidative stress;RONS, Temperature, Hypoxia, Mitochondrial disease) of allowed values for the "Stress" property. Organism: Rat Tissue;cell: Cardiac Muscle"Cardiac Muscle" is not in the list (Heart, Skeletal muscle, Nervous system, Liver, Kidney, Lung;gill, Islet cell;pancreas;thymus, Endothelial;epithelial;mesothelial cell, Blood cells, Fat, ...) of allowed values for the "Tissue and cell" property. Preparation: Permeabilized Tissue"Permeabilized Tissue" is not in the list (Intact organism, Intact organ, Permeabilized cells, Permeabilized tissue, Homogenate, Isolated mitochondria, SMP, Chloroplasts, Enzyme, Oxidase;biochemical oxidation, ...) of allowed values for the "Preparation" property.
Regulation: Respiration; OXPHOS; ETS Capacity"Respiration; OXPHOS; ETS Capacity" is not in the list (Aerobic glycolysis, ADP, ATP, ATP production, AMP, Calcium, Coupling efficiency;uncoupling, Cyt c, Flux control, Inhibitor, ...) of allowed values for the "Respiration and regulation" property.
HRR: Oxygraph-2k
