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The Roles of Aβ in Alzheimer's Disease: In Light of the Latest Findings Kenjiro Ono 1 , Hiroko Shiina 2 , Mariko Matsumoto 2 , Yosuke Nakamura 2 1Department of Neurology, Kanazawa University Graduate School of Medical Sciences 2Eisai Co., Ltd., Medical Headquarters Keyword: アルツハイマー病 , アミロイドβ , オリゴマー , プロトフィブリル , レカネマブ , Alzheimer's disease , amyloid β , oligomer , protofibril , lecanemab pp.399-408
Published Date 2024/4/1
DOI https://doi.org/10.11477/mf.1416202619
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Abstract

The ‘amyloid hypothesis’, initially put forward in 1992, posits that amyloid β protein (Aβ) contributes to neurodegeneration through aberrant aggregation. In the process of this aberrant aggregation, Aβ forms oligomers, protofibrils, and mature fibrils, ultimately developing plaques. These mature fibrils and plaques were believed to be the culprits behind the neurotoxicity and neurodegeneration seen in Alzheimer's disease (AD). However, growing evidence in recent years has led to the ‘Aβ oligomer hypothesis’, which suggests that the intermediate forms of aggregates, such as oligomers and protofibrils, exhibit stronger neurotoxicity than the mature forms. Consequently, efforts have been made to develop anti-Aβ antibody drugs that specifically target these intermediate aggregates. Such interventions hold promise as disease-modifying treatments for AD.


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電子版ISSN 1344-8129 印刷版ISSN 1881-6096 医学書院

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