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High-protein diet induces oxidative stress in rat brain: protective action of high-intensity exercise against lipid
Daniel Camiletti-Moirón1, Virginia Arianna Aparicio2, Elena Nebot3
1Department of Physiology. Faculty of Pharmacy, Faculty of Sport Sciences, and Institute of Nutrition and Food Technology, The Joint Institute for Sport and Health. University of Granada. Spain.. dcamiletti@ugr.es.
Introduction:
It is well established that soy protein diets as well as aerobic exercise could promote antioxidant capacity and consequently reduce free radicals overproduction on brain. However, little is know regarding to the high-protein diets and high intensity exercise on oxidative stress production. The aim of this study was to analyse the effects of high-protein diets and high-intensity exercise (HIE) on brain oxidative stress markers.
Materials And Methods:
A total of 40 male Wistar rats were randomly distributed in 4 experimental groups (n=10): normal-protein or high-protein diets with or without HIE for an experimental period of 12 weeks. Main oxidative damage markers in brain such as thiobarbituric acid-reactive substances (TBARs) and protein carbonyl content (PCC) were assessed. In addition, brain manganese superoxide dismutase (Mn-SOD), cooper/ zinc superoxide dismutase (CuZn-SOD) and catalase (CAT) antioxidant enzymes activity, and protein level of Nuclear factor erythroid 2 related factor 2 (Nrf2) were measured.
Results And Discussion:
Brain TBARs, PCC, tSOD, Mn-SOD, CuZn-SOD and CAT levels were higher in the high-protein compared to the normal-protein groups (all, p.
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