Effect of different kinds of anoxia/reoxygenation on the mitochondrial function and the free radicals production of cultured primary equine skeletal myoblasts.

Autor: Ceusters JD; Center for Oxygen Research and Development, Institute of Chemistry B6a, University of Liège, Sart Tilman, 4000 Liège, Belgium. Electronic address: j.ceusters@ulg.ac.be., Mouithys-Mickalad AA, Franck TJ, Deby-Dupont GP, Derochette S, Serteyn DA
Jazyk: angličtina
Zdroj: Research in veterinary science [Res Vet Sci] 2013 Dec; Vol. 95 (3), pp. 870-8. Date of Electronic Publication: 2013 Sep 18.
DOI: 10.1016/j.rvsc.2013.09.004
Abstrakt: Horses are outstanding athletes, performing in many different disciplines involving different kinds of efforts and metabolic responses. Depending on exercise intensity, their skeletal muscle oxygenation decreases, and the reperfusion at cessation of the exercise can cause excessive production of free radicals. This study on cultured primary equine myoblasts investigated the effect of different kinds of anoxia/reoxygenation (A/R) on routine respiration, mitochondrial complex I specific activity and free radicals production. Our data revealed that short cycles of A/R caused a decrease of all the parameters, opposite to what a single long period of anoxia did. A preconditioning-like effect could explain our first pattern of results whereas mild uncoupling could be more appropriate for the second one. Anyway, it seems that mitochondrial complex I could play a major role in the regulation of the balance between metabolic and antioxidant protection of the muscular function of athletic horses.
(Copyright © 2013 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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