早期のフタル酸エステルおよび代替可塑剤曝露と、幼児期の脳機能的接続および構造形態の変化
Stephanie M Engel1, Tengfei Li2, Emily J Werder3
1Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.
Environment international
|February 11, 2026
まとめ
早期のフタル酸エステルおよび代替可塑剤(PRP)への曝露は、脳の発達に影響を与える。男児では機能的接続の低下が見られ、女児ではPRP曝露による接続の増加と皮質菲薄化が示された。
科学分野:
- 神経科学
- 環境保健
- 発生生物学
背景:
- フタル酸エステルおよび代替可塑剤(PRP)は一般的な環境曝露である。
- PRPへの周産期および幼児期の曝露は、認知および行動発達の問題に関連している。
- 重要な発達期間中の脳構造および機能への潜在的な影響は、まだ完全には理解されていない。
研究 の 目的:
- 早期のPRP曝露と小児の脳発達との関連を調査すること。
- 安静時ネットワークの機能的接続および皮質領域の構造形態への影響を調べること。
- これらの関連における性別特異的な違いを特定すること。
主な方法:
- 2週齢から5歳までの小児を対象とした縦断研究(ベビーコネクトームプロジェクト)。
- 自然睡眠中の非鎮静下での構造的および安静時機能的MRIの取得。
- カーネル重み付け推定方程式および一般化線形モデルを用いた17のPRP代謝物の尿サンプル分析。
主要な成果:
- 複数のPRP代謝物が、実行制御および背側注意ネットワークにおける機能的接続の変化と関連していた。
- PRP曝露は、男児では機能的接続の低下、女児では機能的接続の増加と関連していた。
- 女児におけるMiBP代謝物の濃度は、側頭葉領域における皮質菲薄化と関連していた。
結論:
- 早期のPRP曝露は、脳成熟の軌跡に測定可能な影響を与える。
- PRP曝露が脳発達に与える影響には、有意な性差が存在する。
- これらの所見は、早期発達における環境曝露の重要性を強調している。
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