scholarly journals Superoxide radical production in chicken skeletal muscle induced by acute heat stress

2005 ◽  
Vol 84 (2) ◽  
pp. 307-314 ◽  
Author(s):  
A. Mujahid ◽  
Y. Yoshiki ◽  
Y. Akiba ◽  
M. Toyomizu
Keyword(s):  
Skeletal Muscle ◽  
Heat Stress ◽  
Superoxide Radical ◽  
Radical Production ◽  
Acute Heat Stress ◽  
Chicken Skeletal Muscle

scholarly journals Mitochondrial Oxidative Damage in Chicken Skeletal Muscle Induced by Acute Heat Stress

2007 ◽  
Vol 44 (4) ◽  
pp. 439-445 ◽  
Author(s):  
Ahmad Mujahid ◽  
Neil R. Pumford ◽  
Walter Bottje ◽  
Kiyotaka Nakagawa ◽  
Teruo Miyazawa ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Heat Stress ◽  
Oxidative Damage ◽  
Acute Heat Stress ◽  
Mitochondrial Oxidative Damage ◽  
Chicken Skeletal Muscle

scholarly journals Acute heat stress prior to downhill running may enhance skeletal muscle remodeling

2012 ◽  
Vol 17 (6) ◽  
pp. 693-705 ◽  
Author(s):  
Chad D. Touchberry ◽  
Anisha A. Gupte ◽  
Gregory L. Bomhoff ◽  
Zachary A. Graham ◽  
Paige C. Geiger ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Heat Stress ◽  
Downhill Running ◽  
Acute Heat Stress ◽  
Muscle Remodeling

scholarly journals Effects of acute heat stress on skeletal muscle gene expression associated with energy metabolism in rats

2009 ◽  
Vol 23 (S1) ◽  
Author(s):  
Sara R Sanders ◽  
Lori C Cole ◽  
Kyle L Flann ◽  
Lance H Baumgard ◽  
Robert P Rhoads
Keyword(s):  
Gene Expression ◽  
Skeletal Muscle ◽  
Heat Stress ◽  
Energy Metabolism ◽  
Muscle Gene Expression ◽  
Acute Heat Stress ◽  
Muscle Gene

scholarly journals Olive oil-supplemented diet alleviates acute heat stress-induced mitochondrial ROS production in chicken skeletal muscle

2009 ◽  
Vol 297 (3) ◽  
pp. R690-R698 ◽  
Author(s):  
Ahmad Mujahid ◽  
Yukio Akiba ◽  
Masaaki Toyomizu
Keyword(s):  
Skeletal Muscle ◽  
Heat Stress ◽  
Membrane Potential ◽  
Oxidative Damage ◽  
Olive Oil ◽  
Ros Production ◽  
Muscle Mitochondria ◽  
Skeletal Muscle Mitochondria ◽  
Mitochondrial Ros ◽  
Acute Heat Stress

We have previously shown that avian uncoupling protein (avUCP) is downregulated on exposure to acute heat stress, stimulating mitochondrial reactive oxygen species (ROS) production and oxidative damage. In this study, we investigated whether upregulation of avUCP could attenuate oxidative damage caused by acute heat stress. Broiler chickens ( Gallus gallus) were fed either a control diet or an olive oil-supplemented diet (6.7%), which has been shown to increase the expression of UCP3 in mammals, for 8 days and then exposed either to heat stress (34°C, 12 h) or kept at a thermoneutral temperature (25°C). Skeletal muscle mitochondrial ROS (measured as H2O2) production, avUCP expression, oxidative damage, mitochondrial membrane potential, and oxygen consumption were studied. We confirmed that heat stress increased mitochondrial ROS production and malondialdehyde levels and decreased the amount of avUCP. As expected, feeding birds an olive oil-supplemented diet increased the expression of avUCP in skeletal muscle mitochondria and decreased ROS production and oxidative damage. Studies on mitochondrial function showed that heat stress increased membrane potential in state 4, which was reversed by feeding birds an olive oil-supplemented diet, although no differences in basal proton leak were observed between control and heat-stressed groups. These results show that under heat stress, mitochondrial ROS production and olive oil-induced reduction of ROS production may occur due to changes in respiratory chain activity as well as avUCP expression in skeletal muscle mitochondria.

Maturation increases superoxide radical production without increasing oxidative damage in the skeletal muscle of hooded seals (Cystophora cristata)

2011 ◽  
Vol 89 (3) ◽  
pp. 206-212 ◽  
Author(s):  
J. P. Vázquez-Medina ◽  
N. O. Olguín-Monroy ◽  
P. D. Maldonado ◽  
A. Santamaría ◽  
M. Königsberg ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Oxidative Damage ◽  
Protein Content ◽  
Superoxide Radical ◽  
Ros Production ◽  
Sod Activity ◽  
Hooded Seal ◽  
Cystophora Cristata ◽  
Radical Production ◽  
And Oxidative Stress

Diving vertebrates represent unique models for the study of the physiological responses to reactive oxygen species (ROS) production and oxidative stress because of their adaptability to cope with dive-derived ROS production. We hypothesized that in the skeletal muscle of a diving mammal, the hooded seal ( Cystophora cristata (Erxleben, 1777)), ROS production increases with maturation but the accumulation of oxidative damage does not. To test this, we analyzed the tissue capacity to produce ROS, the accumulation of oxidative damage, and the activity and protein content of the cooper, zinc, and manganese dependent superoxide dismutases (Cu,ZnSOD, MnSOD) in skeletal muscle from neonates, weaned pups, and adult hooded seals. Our results showed higher tissue capacity to produce ROS, higher Cu,ZnSOD and MnSOD activities, and higher MnSOD protein content in adult seals than in pups. No differences in oxidative damage to lipids, proteins, or DNA were detected among groups. Results suggest that increased SOD activity likely counters the oxidative damage commonly associated with increased ROS production. These findings highlight the unusual tolerance of skeletal muscle of seals to increased ROS production.

scholarly journals Acute heat stress activated inflammatory signaling in porcine oxidative skeletal muscle

2017 ◽  
Vol 5 (16) ◽  
pp. e13397 ◽  
Author(s):  
Shanthi Ganesan ◽  
Olga Volodina ◽  
Sarah C. Pearce ◽  
Nicholas K. Gabler ◽  
Lance H. Baumgard ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Heat Stress ◽  
Inflammatory Signaling ◽  
Acute Heat Stress
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