کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1974108 1060337 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Time course of ROS production in skeletal muscle mitochondria from chronic heat-exposed broiler chicken
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Time course of ROS production in skeletal muscle mitochondria from chronic heat-exposed broiler chicken
چکیده انگلیسی

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 °C) or kept at control temperature (24 °C) for 14 days. 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 9 days 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 5 days, but was not at day 14. Mitochondrial oxygen consumption rate in state 3 was increased after 3 and 5 days, 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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology - Volume 157, Issue 3, November 2010, Pages 266–271
نویسندگان
, , , , ,