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臨床症状

Angélica Zuno-Reyes1, Karina Pérez-Rubio1, Ricardo Jáuregui Torres1

  • 1Instituto de Neurociencias, CUCBA, Universidad de Guadalajara, Guadalajara, JA, Mexico.

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まとめ

APPV717I常染色体優性アルツハイマー病の前臨床保有者は、記憶は正常であったが、認知柔軟性には低下が見られた。就学年数は、これらの個人における認知柔軟性のパフォーマンスに積極的に影響を与えた。

キーワード:
常染色体優性アルツハイマー病APP<sub>V717I</sub>前臨床認知柔軟性記憶就学年数

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科学分野:

  • 神経科学; 遺伝学; 心理学

背景:

  • 常染色体優性アルツハイマー病（ADAD）は、アミロイド前駆体タンパク質（APP）遺伝子の変異に関連している。; APPV717IはADADに関連する一般的な変異であり、保有者は臨床症状が現れる前に認知変化を経験する可能性がある。; 前臨床保有者における認知変化の早期検出は、疾患の進行を理解し、介入を開発するために重要である。

研究 の 目的:

  • APPV717I変異の前臨床保有者（PC）の記憶および実行機能（EF）を評価すること。; PCにおける年齢と就学年数（YoS）が認知パフォーマンスに及ぼす影響を決定すること。; APPV717I変異のEFを前臨床段階で研究する先例を確立すること。

主な方法:

  • APPV717I変異保有者の非保有者（NC）である家族メンバー15名と24名を評価した。; 認知柔軟性と記憶は、CERAD神経心理学プロトコルのメキシコ標準化（CERAD-MX）を使用して評価された。; 統計分析には、グループ比較のためのt検定、および年齢とYoSの影響のための相関/回帰分析が含まれた。

主要な成果:

  • PCは、NCと比較して、MWCST（認知柔軟性を評価）において有意に低いパフォーマンスを示した。; PC群とNC群の間で記憶課題のパフォーマンスに有意な差は認められなかった。; 就学年数（YoS）は認知柔軟性とパフォーマンスの予測因子と強い正の相関を示したが、年齢は示さなかった。

結論:

  • APPV717I変異を有する個人は、記憶ではなく認知柔軟性に前臨床的な低下を示し、他のADAD変異の保有者とは区別される。; 就学年数は認知柔軟性に有意に影響を与え、代償的な役割を示唆している。; 本研究は、APPV717I変異の前臨床段階における実行機能の研究を開拓し、早期ADAD進行に関する貴重な洞察を提供する。