精神病を患っていない個人の検査測定および自己申告による認知パフォーマンスを予測する統合失調症のリスク
Elena Rosenqvist1, Leo-Pekka Lyytikäinen2,3,4, Elina Sormunen5
1Department of Psychology, Faculty of Medicine, University of Helsinki, P.O. Box 21, Haartmaninkatu 3, Helsinki, 00014, Finland.
BMC psychiatry
|January 12, 2026
まとめ
統合失調症の高リスク多因子リスク(PRSSCZ)は、精神病を患っていない個人の認知パフォーマンスの低下と関連している。これらの発見は、疾患だけでなく遺伝的素因も認知の困難に影響することを示唆している。
科学分野:
- 精神医学
- 遺伝学
- 認知神経科学
背景:
- 統合失調症は認知障害と関連しており、その一部は薬剤の副作用などの二次的要因によるものである。
- リスク多因子スコア(PRS)は、複雑な疾患の遺伝的素因に関する洞察を提供する。
研究 の 目的:
- 統合失調症のリスク多因子スコア(PRSSCZ)と認知パフォーマンスとの関連を調査すること。
- 遺伝的に影響される認知パフォーマンスと疾患関連要因を区別すること。
主な方法:
- 精神病患者を除外し、人口ベースのYoung Finns Study(n=2217)のデータを使用した。
- ゲノムワイド関連研究データを使用してPRSSCZを計算した。
- Cambridge Neuropsychological Test Automated Batteryおよび自己申告による実行機能を通じて認知機能を評価した。
主要な成果:
- より高いPRSSCZは、テストされたすべての認知領域(視空間学習、反応時間、注意、実行機能)で低いスコアと相関していた。
- これらの関連は、健康行動および社会経済的要因を制御した後も有意であった。
- PRSSCZは、時間経過に伴う硬直性の増加と関連していたが、自己申告による注意散漫やタスク指向性とは関連していなかった。
結論:
- 統合失調症の高い多因子リスクを持つ個人は、診断された患者と同様の認知障害を示す。
- 認知の困難は、疾患またはその結果だけでなく、遺伝的素因に部分的に起因する可能性がある。
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