KMID : 1101720140180020225
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Physical Activity and Nutrition 2014 Volume.18 No. 2 p.225 ~ p.233
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The effect of treadmill exercise on inflammatory responses in rat model of streptozotocin-induced experimental dementia of Alzheimer¡¯s type
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Choi Dong-Hun
Kwon In-Su Koo Jung-Hoon Jang Yong-Chul Kang Eun-Bum Byun Jung-Eun Um Hyun-Sub Park Hoo-Seong Yeom Dong-Cheol Cho In-Ho Cho Joon-Yong
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Abstract
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[Purpose] The aim of this study was to investigate the effect of treadmill exercise on inflammatory response in streptozotocin (STZ)-induced animal model of Alzheimer¡¯s disease (AD).
[Methods] To induce the animal model of AD, Sprague-Dawley rats were injected into intracerebroventricular (ICV) injection with 1.5 mg/kg of STZ. Rats were divided into three groups as Sham-con group (n = 7), STZ-con group (n = 7) and STZ-exe group (n = 7). Exercise group ran on the treadmill for 30 min/day, 5 days/week during 6 weeks.
[Results] The results of this study were as follows: First, STZ-exe group was improved on cognitive function when compared to STZ-con group in water maze test. Second, STZ-exe group help reduce the expression level of amyloid-beta (A¥â). In addition, Toll-like receptors-4 (TLR4), Nuclear factor-kB (NF-kB), Tumor necrosis factor-¥á (TNF-¥á) and Interleukin-1¥á (IL-1¥á) level of STZ-exe group was significantly decreased when compared to STZ-con group.
[Conclusion] These results show that treadmill exercise had positive effect on cognitive function and reduced inflammatory response in STZ-induced animal model of AD.
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KEYWORD
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Streptozotocin, Alzheimer¡¯s disease, Treadmill exercise, Amyloid-beta, Inflammatory
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