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Molecular and genetical approach to neurodegenerative disease. Tadashi MIYATAKE 1 , Satoshi NARUSE 1 , Hisashi KOBAYASHI 1 , Shoji TSUJI 2 1Department of Neurology, Tokyo Medical and Dental University 2Department of Neurology, Brain Research Institute, Niigata University pp.1015-1022
Published Date 1993/12/10
DOI https://doi.org/10.11477/mf.1431900395

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  • Abstract
  • Look Inside

In 1991, Goate et al have identified a Val to Ile mis-sense mutation in the exon 17 of the amyloid precursor protein (APP) gene in 2 early onset familial Alzheimer's disease (FAD) families. Up to the present, 5 kinds of mis-sense mutations have been reported in a few early onset FAD families. These APP gene mutations have been found to be the rare disorder according to the past studies, while it seems more common in Japanese FAD patients. Using the direct sequencing method, the entire coding region of the APP gene were sequenced in 11 unrelated patients with Japanese FAD to determine the exact frequency of known APP gene mutations and also to search for novel mutation responsible for FAD. Three of 11 FAD families showed the known Val to Ile mis-sense mutation at codon 717, whereas no other mutations were detected through the entire coding region. The other approach in our laboratory is focused on growth inhibitory factor (GIF) which was found to be decreased in the brain of Alzheimer's disease (AD) by Uchida et al. We have cloned a full-length cDNA for human GIF gene and found a striking homology to metallothioneins (MTs). In contrast to MT gene, the GIF gene expression is found exclusively in the nervous system. Northern blot analysis revealed that the GIF mRNA expression is drastically decreased in AD brains. The result raises a possibility that down regulation of the GIF gene plays an important role for the pathogenesis of AD.


Copyright © 1993, 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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