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자료유형
학술저널
저자정보
저널정보
한국운동생리학회 운동과학 운동과학 제29권 제2호
발행연도
2020.1
수록면
178 - 187 (10page)

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PURPOSE: The purpose of this study was to analyze the effects of aerobic exercise on the expression of synaptic vesicle transporter and antioxidant enzymes in obesity and to investigate the feasibility of exercise training to reduce AD pathogenesis in the 3xTg-AD mice fed a high fat diet. METHODS: Male 3 month old 3xTg-AD mice were divided into standard chow(SC, n=10), standard chow+exercise (SC-EXE, n=10), high fat diet (HFD, n=10), and high fat diet+exercise (HFD-EXE, n=10) groups. EXE mice were subjected to treadmill running at a moderate intensity with duration of 30 minutes per day and frequency of 5 days per week for 12 weeks. HFD mice were fed a 60% fat HFD during the same period. Mice were sacrificed and immunohistology and western blot analysis were performed. RESULTS: Compared with the SC mice, the HFD mice had significantly higher levels of Aβ (p<.01), p-tau/t-tau (p<.01) and defects of Vglut1 (p<.05), VGAT (p<.05), postsynaptic density 95 (p<.01) and GPX (p<.05) in the hippocampus. On the other hand, we found that treadmill running attenuated HFD-induced exacerbations of Aβ (p<.01), p-tau/t-tau (p<.05) and defects of Vglut1 (p<.01), Synaptophysin (p<.05), SOD1 (p<.05) in the hippocampus. CONCLUSIONS: High fat diet-induced obesity resulted in increased AD neuropathology and decreased synaptic vesicle transporter and antioxidant enzyme in the hippocampus of 3xTg-AD mice. However, aerobic exercise delayed AD-like disease progression, alleviated impaired synaptic function and the decreased expression of antioxidant enzymes in the hippocampus.

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