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KMID : 1139220200160020132
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Journal of Exercise Rehabilitation
2020 Volume.16 No. 2 p.132 ~ p.140
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Swimming exercise ameliorates mood disorder and memory impairment by enhancing neurogenesis, serotonin expression, and inhibiting apoptosis in social isolation rats during adolescence
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Park Hye-Sang
Kim Tae-Woon
Park Sang-Seo
Lee Sam-Jun
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Abstract
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Social isolation during adolescence is associated with anxiety, depression, and memory impairment. Exercise has been reported as a positive effect on brain function, especially hippocampus. The present study examined the effect of swimming exercise on apoptosis, cell proliferation, and serotonin expression in social isolation rats during adolescence stage. Social isolation started at postnatal day 21 and continued for 6 weeks. The rats in the swimming group were forced to swim for 60 min once daily during 6 days per week for 6 consecutive weeks. The rats in the social isolation during adolescence showed anxiety, depression, short-term memory impairment. Social isolation facilitated apoptosis and inhibited cell proliferation and differentiation. Social isolation suppressed expression of serotonin, brain-derived neurotrophic factor, and tyrosine kinase B. Swimming exercise alleviated anxiety, depression, short-term impairment. Swimming exercise suppressed apoptosis, enhanced neurogenesis, and increased serotonin expression. In our study, swimming exercise ameliorates mood disorder and memory impairment by enhancing neurogenesis and serotonin expression and inhibiting apoptosis in social isolation.
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KEYWORD
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Social isolation, Adolescence, Anxiety, Depression, Short-term memory, Swimming
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