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KMID : 1101720140180020225
Physical Activity and Nutrition
2014 Volume.18 No. 2 p.225 ~ p.233
The effect of treadmill exercise on inflammatory responses in rat model of streptozotocin-induced experimental dementia of Alzheimer¡¯s type
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
Abstract
[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.
KEYWORD
Streptozotocin, Alzheimer¡¯s disease, Treadmill exercise, Amyloid-beta, Inflammatory
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