贝Mytilus trossulus的氧化应激是由不同尺寸的塑料引起的
Nadezhda Vladimirovna Dovzhenko1, Valentina Vladimirovna Slobodskova1, Andrey Alexandrovich Mazur1
1Il'ichev Pacific Oceanological Institute, Far Eastern Branch, Russian Academy of Sciences, 690041 Vladivostok, Russia.
Journal of xenobiotics
|November 25, 2024
概括
塑料污染损害了海洋生物. 微塑料聚乙烯和巨型塑料聚乙烯都会在中引起氧化应激和DNA损伤,影响它们的健康和生存.
科学领域:
- 环境科学 环境科学
- 海洋生物学 海洋生物学
- 毒理学 毒理学 毒理学
背景情况:
- 聚乙烯和聚烯是海洋生态系统中普遍存在的塑料污染物.
- 塑料碎片分解成微塑料,对海洋生物构成风险.
- 像Mytilus trossulus这样的双贝类软体对环境污染物很敏感.
研究的目的:
- 研究聚乙烯微塑料和聚乙烯宏观碎片对海洋双鱼Mytilus trossulus的有毒影响.
- 为了比较暴露于不同尺寸和类型的塑料污染物的的生物化学反应.
主要方法:
- 将Mytilus trossulus暴露在0.9微米的聚烯微粒和10厘米的聚乙烯碎片中.
- 评估氧化应激生物标志物,溶酶体稳定性,DNA损伤和甲水平.
- 在特定的贝组织中分析总的抗激素活性.
主要成果:
- 聚乙烯微塑料和聚乙烯宏观碎片都在中诱导了显著的氧化应激.
- 贝类血细胞的溶解体稳定性下降,表明细胞受损.
- 在和消化腺中观察到DNA损伤增加和度增加.
- 总的抗激素活性显示了特定组织的变化.
结论:
- 海洋塑料污染,无论聚合物类型或大小,对Mytilus trossulus有毒.
- 摄入的微塑料和从巨型塑料中出的化学物质都会导致贝的毒性.
- 该研究强调了塑料垃圾对海洋无脊椎动物健康的有害影响.
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