Cerebral ischemia is a major health risk that requires preventive approaches in addition to drug therapy.Physical exercise enhances neurogenesis and synaptogenesis,and has been widely used for functional rehabilitatio...Cerebral ischemia is a major health risk that requires preventive approaches in addition to drug therapy.Physical exercise enhances neurogenesis and synaptogenesis,and has been widely used for functional rehabilitation after stroke.In this study,we determined whether exercise training before disease onset can alleviate the severity of cerebral ischemia.We also examined the role of exercise-induced circulating factors in these effects.Adult mice were subjected to 14 days of treadmill exercise training before surgery for middle cerebral artery occlusion.We found that this exercise pre-conditioning strategy effectively attenuated brain infarct area,inhibited gliogenesis,protected synaptic proteins,and improved novel object and spatial memory function.Further analysis showed that circulating adiponectin plays a critical role in these preventive effects of exercise.Agonist activation of adiponectin receptors by Adipo Ron mimicked the effects of exercise,while inhibiting receptor activation abolished the exercise effects.In summary,our results suggest a crucial role of circulating adiponectin in the effects of exercise pre-conditioning in protecting against cerebral ischemia and supporting the health benefits of exercise.展开更多
Dear Editor,Aerobic exercise is well known to improve cognitive functions including hippocampus-dependent spatial memory[1]and object recognition[2].Regarding the molecular mechanisms,the indispensable role of brain-d...Dear Editor,Aerobic exercise is well known to improve cognitive functions including hippocampus-dependent spatial memory[1]and object recognition[2].Regarding the molecular mechanisms,the indispensable role of brain-derived neurotrophic factor(BDNF)in governing exercise-induced neural plasticity has been demonstrated for the improvement of learning and memory[3].Our recent study further demonstrated the activation of mechanistic target of rapamycin pathways downstream of BDNF to drive synaptic protein synthesis upon persistent exercise[4],but leaving the effect of exercise on the post-translational modification of proteins largely unknown.展开更多
基金supported by STI2030-Major Projects,No.2022ZD0207600(to LZ)the National Natural Science Foundation of China,Nos.32070955(to LZ),U22A20301(to KFS)+3 种基金the Natural Science Foundation of Guangdong Province,No.2021A1515012197(to HO)Guangzhou Core Medical Disciplines Project,No.2021-2023(to HO)Key Research and Development Plan of Ningxia Hui Automomous Region,No.2022BEG01004(to KFS)Science and Technology Program of Guangzhou,China,No.202007030012(to KFS and LZ)。
文摘Cerebral ischemia is a major health risk that requires preventive approaches in addition to drug therapy.Physical exercise enhances neurogenesis and synaptogenesis,and has been widely used for functional rehabilitation after stroke.In this study,we determined whether exercise training before disease onset can alleviate the severity of cerebral ischemia.We also examined the role of exercise-induced circulating factors in these effects.Adult mice were subjected to 14 days of treadmill exercise training before surgery for middle cerebral artery occlusion.We found that this exercise pre-conditioning strategy effectively attenuated brain infarct area,inhibited gliogenesis,protected synaptic proteins,and improved novel object and spatial memory function.Further analysis showed that circulating adiponectin plays a critical role in these preventive effects of exercise.Agonist activation of adiponectin receptors by Adipo Ron mimicked the effects of exercise,while inhibiting receptor activation abolished the exercise effects.In summary,our results suggest a crucial role of circulating adiponectin in the effects of exercise pre-conditioning in protecting against cerebral ischemia and supporting the health benefits of exercise.
基金by the National Key Research and Development Program of China(2016YFC1306702 and 2020YFA0113600)the National Natural Science Foundation of China(81771455,81971067,and 32070955)+3 种基金the Science and Technology Program of Guangdong Province,China(2018B030334001)the Outstanding Scholar Program of Bioland Laboratory(Guangzhou Regenerative Medicine and Health Guangdong Laboratory)(2018GZR110102002)the Science and Technology Program of Guangzhou,China(202007030012)the Natural Science Foundation of Guangdong Province,China(2019A1515011772).
文摘Dear Editor,Aerobic exercise is well known to improve cognitive functions including hippocampus-dependent spatial memory[1]and object recognition[2].Regarding the molecular mechanisms,the indispensable role of brain-derived neurotrophic factor(BDNF)in governing exercise-induced neural plasticity has been demonstrated for the improvement of learning and memory[3].Our recent study further demonstrated the activation of mechanistic target of rapamycin pathways downstream of BDNF to drive synaptic protein synthesis upon persistent exercise[4],but leaving the effect of exercise on the post-translational modification of proteins largely unknown.
