双甲 (双酸) 破坏肠道微生物群的恒常性,并诱导斑马鱼的肠道毒性
Yang Lyu1, Xiao Wang1, Yan Wang1
1Key Laboratory of Pollution Processes and Environmental Criteria of Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering of Nankai University, Tianjin 300350, China.
Environmental pollution (Barking, Essex : 1987)
|October 9, 2025
概括
双甲二酸 (BDP) 是一种阻燃剂,通过改变肠道细菌并破坏肠道屏障,导致斑马鱼的肠道受损. 这些影响表明,暴露于BDP的生物体存在潜在风险.
科学领域:
- 环境毒理学环境毒理学
- 有机阻燃剂 阻燃剂
- 肠道微生物群研究 研究
背景情况:
- 双甲二酸 (BDP) 是一种常见的阻燃剂,在环境中广泛存在.
- 它的毒性,尤其是对肠道的毒性,尚不清楚.
- 肠道在免疫系统中起着至关重要的作用,易受环境污染物的影响.
研究的目的:
- 为了研究斑马鱼中BDP的肠道毒性.
- 检查BDP对肠道微生物群组成和肠道屏障功能的影响.
- 评估BDP暴露引起的氧化应激和炎症.
主要方法:
- 斑马鱼在21天内暴露于不同度的BDP (0,10,100μg/L),随后有21天的恢复期.
- 分析了肠道微生物群的组成.
- 评估了肠道组织病理学,屏障完整性 (Claudin-1, Mucin 2表达),氧化应激标志物 (SOD,MDA) 和炎症类细胞因子 (IL-1β,TNF-α,TGF-β).
主要成果:
- 暴露于BDP显著改变了肠道微生物群,增加了蛋白质细菌和菌,以及特定的属,导致了失生症.
- 在肠道中观察到组织病理性损伤.
- BDP降低了Claudin-1和Mucin 2的表达,表明肠道屏障完整性的持续破坏.
- 氧化应激和炎症标志物 (SOD,MDA,IL-1β,TNF-α,TGF-β) 剂量取决于增加.
- 在微生物群变化和肠道损伤之间发现了相关性.
结论:
- 在斑马鱼中,BDP通过肠道微生物群失调,屏障破坏,氧化应激和炎症诱导肠道毒性.
- 观察到的干扰甚至在恢复期之后仍然存在.
- 由于其对肠道的不良影响,BDP对生物体构成潜在风险.
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