微塑料暴露的经验加剧了腹性贝类毒素 (DST) 在厚贝Mytilus coruscus中的积累,通过损害排毒过程
Kuan-Kuan Yuan1, Ying-Ying Yu2, Yu-Jie Liu1
1Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institute, College of Life Science and Technology, Jinan University, Guangzhou 510632, China.
Journal of hazardous materials
|December 7, 2024
概括
微塑料暴露会增加类贝类毒素 (DST) 在鱼中的积累,因为它会损害排毒. 这种污染对人类消费者构成重大威胁,凸显了迫切需要关注微塑料污染的问题.
科学领域:
- 海洋生物学 海洋生物学
- 环境毒理学环境毒理学
- 生态毒理学 生态毒理学
背景情况:
- 作为过器食者,双动物易于积累盆地毒素,如腹性贝类毒素 (DST).
- 微塑料 (MP) 污染在水生环境中普遍存在,引发了人们对其与海洋生物的相互作用和毒素暴露的担忧.
- 之前接触微塑料对双敏感性对DST的影响在很大程度上仍未得到研究.
研究的目的:
- 为了研究聚乙烯微塑料 (PS-MP) 暴露对厚贝 (Mytilus coruscus) 中DST积累的影响.
- 评估微塑料和产生DST的微藻 (Prorocentrum lima) 对鱼健康的综合影响,重点是排毒,氧化应激和组织损伤.
主要方法:
- 贝类 (Mytilus coruscus) 被暴露在聚烯微塑料 (PS-MPs) 中.
- 随后对产生DST的Prorocentrum lima进行了暴露,以评估毒素积累.
- 分析了累积的DST水平,解毒酶活性,氧化应激标志物和消化腺体的组织学变化.
主要成果:
- 以前接触过MP的鱼在他们的消化腺中积累了显著更高水平的DST.
- 暴露于MP和P. lima都引起了氧化应激和消化腺体的组织病变.
- 在MP暴露后暴露于P. lima的鱼表现出最高水平的氧化应激和组织学损伤.
- 暴露于MP的鱼中受损的排毒机制可能有助于增加DST的积累.
结论:
- 之前的微塑料暴露显著增加了双体中DST的积累,增加了健康风险.
- 微塑料和产生DST的藻类协同加剧了中的氧化应激和组织损伤.
- 微塑料的广泛存在放大了贝类中DST污染的威胁,对人类消费者构成风险.
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