Remote ischemic preconditioning of the heart: protective responses in functional and biophysical properties of cardiac mitochondria

Title:

Remote ischemic preconditioning of the heart: protective responses in functional and biophysical properties of cardiac mitochondria

Creator:

Miroslav Ferko, Kancirová, I., Jašová, M., Slávka Čarnická, Muráriková, M., Waczulíková, I., Sumbalová, Z., Jarmila Kucharská, Oľga Uličná, Ravingerová, T., and Atila Ziegelhöffer

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:79142ece-b9cf-4c4a-86bd-7834b93100f0
uuid:79142ece-b9cf-4c4a-86bd-7834b93100f0
issn:0862-8408

Subject:

Fyziologie člověka a srovnávací fyziologie, ischemie, mitochondrie, ischemia, mitochondrias, rat heart, remote preconditioning, reperfusion injury, heart mitochondria, oxygen consumption, respiratory chain, mitochondrial membrane fluidity, 14, and 612

Type:

article, články, model:article, and TEXT

Format:

print, bez média, and svazek

Description:

Remote ischemic preconditioning (RIP)-induced protection of myocardial energetics was well documented on the level of tissue, but data concerning the involvement of mitochondria were missing. We aimed at the identification of changes in membrane properties and respiratory functions induced in rat heart mitochondria by RIP. Experiments were performed on 46 male Wistar rats divided into control and RIP-treated groups of 21 animals each. Blood flow in the occluded area was recorded by MRI angiography in four animals. RIP protocol comprised of three successive 5-min occlusions each followed by 5-min reperfusions of descending branches of the right hind limb femoral artery. The efficacy of RIP was evaluated as the extent of RIP-induced protection against damage to the functions of mitochondria isolated by differential centrifugation after 30-min global ischemia followed by 40-min reperfusion of the hearts in Langendorff mode. Assessments: mitochondrial membrane fluidity with a fluorescent probe DPH, CoQ9 and CoQ10 with HPLC, mitochondrial respiration with the Oxygraph-2k (Oroboros). Results revealed that RIP was affecting the mitochondria. The immediate protection conferred by RIP involves beneficial and prognostically significant effects: a total elimination of ischemia/reperfusion-induced depression of mitochondrial membrane fluidity and a trend for better preservation of mitochondrial state 3 respiration., M. Ferko, I. Kancirová, M. Jašová, S. Čarnická, M. Muráriková, I. Waczulíková, Z. Sumbalová, J. Kucharská, O. uličná, T. Ravingerová, A. Ziegelhöffer., and Obsahuje bibliografii

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Physiological research | 2014 Volume:63 | Number:Suppl 4

Harvested from:

CDK

Metadata only:

false