Biological and Pharmaceutical Bulletin
Online ISSN : 1347-5215
Print ISSN : 0918-6158
ISSN-L : 0918-6158
The Effects of Choto-san on the mRNA Expression of Alzheimer's Disease Related Factors in the Permanent Ischemic Rat Brain
Hisae HayashiMichihisa TohdaHiroshi WatanabeYukihisa MurakamiKinzo Matsumoto
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2005 Volume 28 Issue 4 Pages 744-746


Choto-san is a Kampo medicines that has been used clinically for the treatment of dementia. We measured the mRNA expressions of some factors related to Alzheimer's disease in a dementia model rat brain. The expressions of β-amyloid precursor protein, γ-secretase, α7 nicotinic acetylcholine receptor, neprilysin, and insulin degrading enzyme (IDE) were significantly increased on day 4 after permanent occlusion of the bilateral common carotid arteries (2VO). Choto-san inhibited the enhancement of IDE expression caused by 2VO, although it failed to show any effects on the expressions of the other molecules. These results suggest that Choto-san may produce a state in which it is not necessary to induce IDE expression to demonstrate the anti-dementia effects.

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© 2005 The Pharmaceutical Society of Japan
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