空気汚染と骨の健康への影響:妊娠から子供期までの感受性期間
Lieke E J M Scheepers1, Anne-Claire Binter2, Susana Santos3
1University of Tasmania, Menzies Institute for Medical Research, Hobart, Australia.
Environment international
|September 2, 2025
まとめ
細粒子物質 (PM2.5) や窒素二酸化物 (NO2) を含む大気汚染への子供時代の曝露は,6歳までに骨のミネラル密度と含有量の低下と関連しています. 感受性の窓は幼少期に存在し,影響は男の子に潜在的により顕著です.
科学分野:
- 環境 健康
- 小児科
- 骨格生物学
背景:
- 早期の環境曝露は骨格の発達に大きく影響する.
- 骨の健康には 発達初期における大気汚染への感受性の 臨界点を理解することが重要です
- この研究は,空気の汚染が子供の骨の健康に及ぼす影響を調査しています.
研究 の 目的:
- 幼児の骨の健康に及ぼす大気汚染の影響に最も脆弱な時期を特定する.
- 6歳の時に様々な大気汚染物質と骨のミネラル密度および含有量との関連を調べる.
主な方法:
- オランダの集団ベースのGeneration Rコホート研究から得られたデータを使用した.
- 土地利用の回帰モデルを用いた,大気汚染物質 (NO2,PM10,PM2.5,PM2.5) の日均濃度推定.
- 骨のミネラル密度と含有量を6歳の時に二重エネルギーX線吸収測定法で評価し,感受性の窓を特定するために分散レイグモデリングを使用した.
主要な成果:
- PM2.5とPM2.5の吸収性について,約1〜4歳の感受性ウィンドウが特定され,骨のミネラル密度に悪影響を及ぼします.
- 測定されたすべての大気汚染物質は 幼児期における骨のミネラル含有量減少と関連しています
- 妊娠中のNO2とPM2. 5の吸収は,骨のミネラル含有量の上昇と関連しており,主な影響は男の子にみられた.
結論:
- 幼児期における大気汚染物質への曝露は 骨の健康状態の悪化と関連しています
- 幼少期の感受性の特定の窓は,環境要因が骨格の発達に及ぼす重大な影響を強調しています.
- 発見は骨の健康を守るため,人生の初期に大気汚染の影響を軽減するための介入の必要性を強調しています.
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