Time course of ROS production in skeletal muscle mitochondria from chronic heat-exposed broiler chicken

Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
M A K AzadM Toyomizu

Abstract

This study was designed to elucidate physiological changes of skeletal muscle mitochondria from broiler chickens (Gallus gallus) during chronic heat exposure. Chickens (19-day-old) were exposed to either constant heat stress (34 degrees C) or kept at control temperature (24 degrees C) for 14days. Mitochondrial ROS production for control group showed little changes during the experimental periods, whereas that for the heat-stressed group was increased after 3, 5 and 9days of heat exposure and returned to original levels at day 14. Mitochondrial membrane potential in state 4 for heat-stressed birds was higher than those of control birds after 3 and 5days, but was not at day 14. Mitochondrial oxygen consumption rate in state 3 was increased after 3 and 5days, and also returned to original levels by day 14. These results suggest that chronic heat stress induces increased ROS production in skeletal muscle mitochondria, probably via elevation of the membrane potential in state 4, resulting from enhanced oxygen consumption in the initial stage of heat exposure. These physiological changes were no longer observed at day 14, possibly because the animals had acclimatized to environmental heat stress.

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Dec 29, 2009·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·M A K AzadM Toyomizu

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Citations

Jan 7, 2014·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Vishwajit S ChowdhuryMitsuhiro Furuse
Nov 30, 2011·Experimental Gerontology·Magdalene K MontgomeryWilliam A Buttemer
Feb 9, 2011·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Masaaki ToyomizuTaku Amo
Nov 9, 2012·Environmental Toxicology and Chemistry·Michael J HooperKent E Pinkerton
Jun 30, 2016·Journal of Animal Science and Biotechnology·Abdollah AkbarianStefaan De Smet
Jun 25, 2017·Physiological Reports·Alexandra J BrownsteinJoshua T Selsby
Jan 16, 2020·Animals : an Open Access Journal From MDPI·Adnan KhanYachun Wang
Apr 1, 2014·Temperature : Multidisciplinary Biomedical Journal·Sandra I Rosado MontillaJoshua T Selsby
Feb 26, 2020·Journal of Animal Science and Biotechnology·Adnan KhanHuabin Zhu
Oct 25, 2017·Cell Stress & Chaperones·Daniel J BolusNamakkal S Rajasekaran
Jan 13, 2021·Journal of Animal Science and Biotechnology·Akshat GoelYang-Ho Choi
May 29, 2018·Journal of Thermal Biology·Shanthi GanesanJoshua T Selsby
May 22, 2021·Journal of Thermal Biology·Abdel-Moneim Eid Abdel-MoneimTarek A Ebeid

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