Cigarette Smoke Inhibits Brain Mitochondrial Adaptations of Exercised Mice
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Abstract
Physical exercise and smoking are environmental factors that generally cause opposite health-promoting adaptations. Both physical exercise and smoking converge on mitochondrial adaptations in various tissues, including the pro-oxidant nervous system. Here, we analyzed the impact of cigarette smoking on exercise-induced brain mitochondrial adaptations in the hippocampus and pre-frontal cortex of adult mice. The animals were exposed to chronic cigarette smoke followed by 8 weeks of moderate-intensity physical exercise that increased mitochondrial activity in the hippocampus and pre-frontal cortex in the non-smoker mice. However, mice previously exposed to cigarette smoke did not present these exercise-induced mitochondrial adaptations. Our results suggest that smoking can inhibit some brain health-promoting changes induced by physical exercise.
Keywords
Exercise Cigarette smoke Mitochondria Cortex HippocampusReferences
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