ルイ体の認知症における不安の神経基礎

Naohiro Kimura^1,2, Yoshihiro Chadani¹, Ryo Kawai¹

¹Department of Neuropsychiatry, Kochi Medical School, Kochi University, Nankoku, Japan.

International journal of geriatric psychiatry

|September 3, 2025

まとめ

ルイ体の認知症 (DLB) の不安は,認知の変動と関連しています. 脳のイメージングは右側上辺回路の血流の減少を明らかにし DLBの不安への関わりを示唆しています

科学分野:

神経科学
神経イメージング
精神科

背景:

不安は,ルイ体の認知症 (DLB) の一般的な症状です.
DLBにおける不安の臨床的相関および神経的基盤は,まだ十分に理解されていません.
DLBにおける不安に関連した主要な臨床的特徴と特定の脳領域は調査が必要です.

研究の目的:

DLB患者における主要な臨床特徴と不安の関連性を調査する.
統計画像分析を用いて,DLBにおける不安の神経基盤を特定する.

主な方法:

レヴィーの体を持つ認知症に関する日本での多センター研究から得られたデータです.
DLBの可能性のある患者40人 (CDR0. 5または1) を含む.
神経精神科インベントリー (NPI) を使って不安を評価し,単光子放出コンピュータトモグラフィー (SPECT) を使って脳領域を検査した.

主要な成果:

DLBと不安のある患者は,不安のない患者と比較して,認知の変動の有意に高い発生率を示しました.
NPIの不安スコアと右側上回における地域的な脳血流の間で有意な負の相関が認められた.

結論:

認知の変動は,DLBにおける不安に関連した重要な臨床的特徴です.
DLBの神経機能プロファイル内の不安に関与する重要な脳領域である可能性があります.

キーワード:

心配する認知症の行動的および心理的な症状ルイ体の認知症認知の変動右上辺回関節統計パラメータマッピング支持する臨床的特徴

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