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논문 기본 정보

자료유형
학술저널
저자정보
백성수 (상명대학교) 김상훈 (상명대학교 자연과학대학)
저널정보
한국운동재활학회 Journal of exercise rehabilitation Journal of exercise rehabilitation Vol.12 No.6
발행연도
2016.1
수록면
526 - 534 (9page)

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Alzheimer disease (AD) is a most common form of dementia and even-tually causes impairments of learning ability and memory function. In the present study, we investigated the effects of treadmill exercise on the symptoms of AD focusing on the microglial activation-induced apoptosis. AD was made by bilateral intracerebroventricular injection of streptozotocin. The rats in the exercise groups were made to run on a treadmill once a day for 30 min during 4 weeks. The distance and la-tency in the Morris water maze task and the latency in the step-down avoidance task were increased in the AD rats, in contrast, treadmill ex-ercise shortened these parameters. The numbers of terminal deoxynu-cleotidyl transferase-mediated dUTP nick end labeling-positive and caspase-3-positive cells in the hippocampal dentate gyrus were de-creased in the AD rats, in contrast, treadmill exercise suppressed these numbers. Expressions of glial fibrillary acidic protein (GFAP) and cluster of differentiation molecule 11B (CD11b) in the hippocampal dentate gy-rus were increased in the AD rats, in contrast, treadmill exercise sup-pressed GFAP and CD11b expressions. Bax expression was increased and Bcl-2 expression was decreased in the hippocampus of AD rats, in contrast, treadmill exercise decreased Bax expression and increased Bcl-2 expression. The present results demonstrated that treadmill exer-cise ameliorated AD-induced impairments of spatial learning ability and short-term memory through suppressing apoptosis. The antiapoptotic effect of treadmill exercise might be ascribed to the inhibitory effect of treadmill exercise on microglial activation.

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