データベースのアプローチを用いた精神病のサブタイプ化により,皮質と細胞のシグネチャーが異なることが明らかになる
bioRxiv : the preprint server for biology
|September 5, 2025
まとめ
精神病のサブタイプは 脳の構造に 明確な違いがあります 1つのサブタイプは前頭部と頭頂部が大きくなり,もう1つのサブタイプは前頭部,側頭部,皮質下部の領域が縮小し,臨床症状に影響を与えています.
科学分野:
- 神経イメージングと計算精神科
- 精神疾患における脳構造と機能
- 神経解剖学の細胞相関
背景:
- 脳の構造的異常は 精神病ではよく見られるが 非常に変化する
- この異質性は,病理生理学と治療の開発の理解を複雑にする.
- 神経生物学的サブタイプを特定することは 精神病の研究を進めるために不可欠です
研究 の 目的:
- データを駆使したアプローチを使用して,幅広い精神病コホート内の解剖学的に派生したサブタイプを特定し,特徴づけること.
- これらのサブタイプの神経構造の違いと臨床表現との関係を調査する.
- 精神病の構造的変異の 細胞基礎を調査する
主な方法:
- 統合失調症スペクトル障害 (SSD) と双極性障害 (BD) の患者の構造神経イメージングデータに類似性ネットワーク融合 (SNF) を適用した.
- 皮質の表面積と皮質下部の量を分析し,トランス診断のサブタイプを特定した.
- 遺伝子発現データを統合して 特定の細胞の種類と 脳の構造を関連付けます
主要な成果:
- 脳の構造の異常が 異なる2つの精神病のサブタイプを特定しました
- サブタイプ1は,前頭部/上頭部表面積の拡大と,より大きなストライタル体積を示した.
- サブタイプ2は,前頭部/頭蓋骨の表面積の減少と皮質下部の体積の減少を示し,より重度の否定的な症状と認知障害と相関していました.
- 表面積の減少は層5のグルタマタージックニューロンと関連しており,皮質の厚さの減少は亜型2のグリアとインターニューロンと相関していた.
結論:
- 精神病における神経構造的異質性は 異なるトランス診断サブタイプに分けることができます
- 特定のニューロンタイプに関連した表面積の地域的変動は,精神病の病理学的生物マーカーとして機能する可能性があります.
- これらの発見は 精神病の様々な生物学的基盤について 新たな洞察を与えてくれます
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