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The prediction in the mild cognitive impairment stage of Alzheimer's disease Masahiro Maruyama 1 , Naoki Tomita 1 , Miyako Nemoto 1 , Hironori Fujiwara 2 , Takashi Seki 2 , Koh Iwasaki 2 , Nobuyuki Okamura 3 , Shozo Furumoto 4 , Yukitsuka Kudo 4 , Hiroyuki Arai 2 , Hidetada Sasaki 1 1Department of Geriatric and Respiratory Medicine, Tohoku University School of Medicine 2Department of Geriatric and Complementary Medicine, Tohoku University School of Medicine 3Department of Pharmacology, Tohoku University School of Medicine 4Biomedical Engineering Research Organization, Tohoku University School of Medicine Keyword: アルツハイマー病の早期診断 , mild cognitive impairment , CSF-tau pp.402-410
Published Date 2005/6/10
DOI https://doi.org/10.11477/mf.1431100057

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  • Abstract
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Recently, it has become important to diagnose Alzheimer's disease(AD)at an early stage due to the development of AD therapy. Also, there is increasing recognition of a class of elderly people with complaints of memory loss but who nevertheless do not meet the criteria for dementia.“Mild cognitive inpairment”(MCI)is the term used for this disorder, and amnestic MCI is highly converted to AD.

 We evaluated the accuracy of diagnosis of amnestic MCI by cerebrospinal fluid total-tau protein(CSF-tau), cerebrospinal fluid amyloid beta 1-42 protein(CSF/Aβ1-42), and cerebral blood flow in the posterior cingulated cortex using SPECT. CSF-tau was the most appropriate to discriminate between normal cognitive individuals and those eith amnestic MCI.

 We also evaluated the CSF/total-tau and MRI images between patients with stable MCI and those with progressive MCI,including those who converted to AD in the following two years. The stable type was characterized by normal CSF-tau levels and relatively high grade periventricular white matter lesions(PWML). Conversely, the progressive type was characterized by high CSF-tau levels and relatively low grade PWML, We speculate that stable MCI is due to ischemic change with in the white matter lesion, while progressive MCI may represent a previous stage of AD.


Copyright © 2005, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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