BPA及其替代品暴露诱导的肠道菌群紊乱及代谢干扰机制研究进展

    Research advances in gut microbiota dysbiosis and mechanism of metabolic disruption induced by exposure to BPA and its substitutes

    • 摘要: 双酚A(bisphenol A, BPA)及其替代品作为环境内分泌干扰物, 广泛存在于环境介质及人体生物样本中, 其暴露引发的健康风险备受关注。本文系统综述了BPA及其替代品通过扰乱肠道菌群-宿主代谢轴诱导机体发生代谢紊乱的作用机制。研究表明, 此类化合物通过抑制短链脂肪酸(short-chain fatty acids, SCFAs)生成、干扰胆汁酸代谢重编程及破坏色氨酸-犬尿氨酸平衡, 导致肠屏障损伤、系统性炎症及多器官毒性。肠道菌群作为关键靶点, 其多样性降低与促炎菌/抗炎菌比例失衡直接相关, 并通过代谢物介导肠-肝轴、肠-脑轴等跨器官毒性效应。值得注意的是, 部分替代物(如bisphenol AF, BPAF)表现出较BPA更强的生物蓄积性与代谢干扰潜力。现有证据提示, 靶向菌群调控(如益生菌干预、膳食纤维补充)或可通过恢复SCFAs平衡、修复胆汁酸-FXR/TGR5信号轴缓解毒性效应。未来需整合多组学技术与跨物种模型, 建立基于"菌群敏感性"的替代品风险评估框架, 为环境健康风险分层管理提供新策略。本研究为揭示双酚类化合物肠道毒性机制及开发微生态干预措施奠定了理论基础。

       

      Abstract: Bisphenol A (BPA) and its substitutes, acting as environmental endocrine disruptors, are ubiquitously present in environmental matrices and human biological samples. The associated health risks from exposure to these compounds are a subject of considerable concern. This article systematically reviews the mechanisms by which BPA and its substitutes disrupt the gut microbiota-host metabolic axis to induce metabolic disorders. Research has revealed that these compounds impair short-chain fatty acid (SCFA) production, interfere with bile acid metabolic reprogramming, and disrupt tryptophan-kynurenine balance, triggering intestinal barrier damage, systemic inflammation, and multi-organ toxicity. Gut microbiota serve as a critical therapeutic target, with its reduced diversity directly associated with an imbalance in pro-inflammatory/anti-inflammatory bacteria ratios, which in turn mediates trans-organ toxicities via metabolites affecting the gut-liver axis, gut-brain axis, and other pathways. Notably, some substitutes like bisphenol AF (BPAF) exhibit heightened bioaccumulation and metabolic interference potential compared to BPA. Existing evidence suggests that targeted modulation of the gut microbiota (such as probiotic intervention and dietary fiber supplementation) demonstrates promise in restoring SCFA balance and repairing the bile acid-FXR/TGR5 signaling axis, thereby mitigating toxicity. Future research may integrate multi-omics technologies with cross-species models to establish microbiota sensitivity-based risk assessment frameworks for substitutes, thereby providing a new strategy for stratified environmental health risk management. This study has laid the foundation for understanding the mechanism of enterotoxic effects of bisphenols and the development of microbiota-based intervention measures.

       

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