多乳酸マイクロプラスチックによる肝毒性:腸内微生物群と尿酸代謝の媒介的な役割
Yanhong Deng1, Zhiming Li1, Yuji Huang2
1National Medical Products Administration (NMPA) Key Laboratory for Safety Evaluation of Cosmetics, Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Toxicology, School of Public Health, Southern Medical University, Guangzhou, China.
Journal of advanced research
|September 6, 2025
まとめ
生物分解性マイクロプラスチック (MPs) は腸内細菌を破壊し,尿酸を増やし,肝臓にダメージを与える. 腸内微生物の除去はPLA MPによる肝損傷を軽減します
科学分野:
- 環境 健康
- 毒理学について
- 微生物学
背景:
- 生物分解性マイクロプラスチック (MPs) の消費は増加しており,健康に潜在的な危険性があります.
- 肝臓は消化と吸収における役割のために,吸収されたMPsの主な標的である.
研究 の 目的:
- 生物分解性MPの肝臓に対する毒性効果とメカニズムを調査する.
- MP誘発性肝毒性における腸内微生物の役割を理解する.
主な方法:
- ポリラクティック酸 (PLA) ポリマーおよびオリゴマーを用いた in vivo マルチオミックおよび in vitro 研究
- マウスの28日間の重複投与は,環境的に重要な濃度で実施された.
- ヘプG2細胞は,PLA MPsと尿酸にさらされます.
主要な成果:
- プラズマと尿酸を増加させた
- 尿酸が上昇するとHsd17b13が増加し,肝臓のトリグリセリドの蓄積,炎症,および線維症を引き起こします.
- 腸内微生物群の緩和により,PLA MPによる肝損傷が減少した.
- 尿酸は,PLA MPs 単体ではなく,HSD17B13とHepG2細胞における脂質滴の形成を上位に調節した.
結論:
- 腸内微生物群による尿酸の上昇によって媒介される.
- 系統的要因,特に腸内微生物群は,PLA MPの肝毒性を評価する上で極めて重要です.
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