对微塑料和的同时暴露会导致Laeonereis culveri (Annelida, Polychaeta) 的氧化情况
Larissa Müller1,2, Nágila Villar1,2, Gabriela Côrrea Soares1,2
1Instituto de Ciências Biológicas (ICB), Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil. Av. Itália, km 8, Campus Carreiros, Rio Grande, Rio Grande do Sul, 96203-900, Brazil.
Toxicology research
|July 11, 2025
概括
微塑料 (MP) 和 (As) 的同时暴露会对Laeonereis culveri.的多基体产生负面影响. 这种组合诱导了氧化应激和改变了能量代谢,可能会损害长期的生理功能.
科学领域:
- 环境毒理学环境毒理学
- 海洋生物学 海洋生物学
- 生态毒理学 生态毒理学
背景情况:
- 微塑料 (MP) 可以吸附和运输环境污染物.
- (As) 是一种有毒的金属化物,具有已知的不良健康影响.
- 没有完全理解MP和As的联合毒理效应.
研究的目的:
- 为了研究微塑料和对海洋多叶藻 Laeonereis culveri.的联合影响.
- 评估对氧化应激生物标志物和能量代谢的影响.
- 为了确定MP是否影响的积累和代谢.
主要方法:
- 暴露Laeonereis culveri在微塑料 (聚乙烯,1.1μm) 和/或 () () 中7天.
- 对氧化应激标志物 (GPx,GST,GSH) 和能量代谢指标 (葡萄糖,乳酸,LDH) 的分析.
- 总含量量和特异性的量化.
主要成果:
- 同时暴露于MP和As减少了GPx和GST活动;仅在MP组中减少了GSH水平.
- MP没有改变A的积累或代谢.
- 联合As和MP暴露增加了葡萄糖,乳酸和LDH活性.
结论:
- 对和微塑料的同时暴露会在Laeonereis culveri.中诱导一种氧化环境.
- As和MP的组合可能会对能量代谢产生负面影响.
- 这些发现表明,对海洋生物有潜在的长期生理后果.
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