胎児の発達中のペル-およびポリフルオアルキル物質への曝露と成人期における胞生殖細胞癌のリスク
Cecilie S Uldbjerg1, Youn-Hee Lim2, Astrid L Beck1
1Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, University of Copenhagen, Denmark; International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.
Environment international
|September 3, 2025
まとめ
胎児のペルおよびポリフルオアルキル物質 (PFAS) への曝露は,成人の丸がんリスクと限られた関連性を示した. パルフロアルキル硫酸は,特にセミノーマのリスクを増加させる可能性があるという証拠があり,さらなる研究が必要である.
科学分野:
- 環境疫学
- 生殖毒学
- 癌の原因
背景:
- 精巣の生殖細胞がん (TGCC) は胎児の生涯で発症する.
- 胎児が内分泌系を乱すペルおよびポリフルオアルキル物質 (PFAS) といった環境化学物質に曝露すると,TGCCに寄与する可能性があります.
- 胎児のPFAS暴露とTGCCリスクに関する疫学的なデータは限られている.
研究 の 目的:
- 各種のPFASへの産前暴露と成人期におけるTGCCの発症リスクとの関連を調査する.
- 特定のPFAS化合物,その混合物,およびTGCCリスクとの潜在的な関連を調査する.
- TGCCの組織学的なサブタイプによって関連が異なるかどうかを調べる.
主な方法:
- 549匹の母子 (103匹のTGCC,446匹の対照群) を対象としたネストケース・コントロール研究.
- バイオバンクから採取した母親の血清サンプルを1985年から1994年までの期間で利用した.
- 8つのPFASを母体血清で定量化し,コックス回帰と定量g計算を用いてTGCCリスクとの関連を分析した.
主要な成果:
- 個々のPFASは,TGCCリスクと軽微な関連性を示した.
- パルフロアルキル硫酸 (例えば,PFOS) はTGCCのリスクが高く,パルフロアルキルカルボキシル酸はリスクが低いことを示した.
- 混合物の分析では,硫酸の共同作用によるTGCCリスクが高かった (HR1. 13).
- すべてのPFASにおいて,非セミノーマと比較して,より高いリスクが観察されました.
結論:
- 胎児のPFAS曝露と成人のTGCCリスクとの間の関連性は限られた証拠で示されています.
- パルフッロアルキル硫酸は,TGCCの発達,特にセミノーマに有害な影響を及ぼす可能性があります.
- これらの発見を確認し,メカニズムを明らかにするためにさらなる研究が必要です.
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