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nano-TiO2 reduces bioavailability and biotransformation responses to crude oil WAF-associated PAHs in the European sea bass Dicentrachus labrax
Marine Pollution Bulletin ( IF 5.3 ) Pub Date : 2024-11-12 , DOI: 10.1016/j.marpolbul.2024.117265
M.L. Vannuccini, C. Della Torre, G. Grassi, C. Zambonin, P. Cotugno, M.J. Leaver, I. Corsi

The present study investigates the potential interaction between nano‑titanium dioxide (nano-TiO2) and the water accommodated fraction (WAF) of crude oil and associated chemicals on bioavailability and biotransformation responses in the European sea bass (Dicentrarchus labrax). An in vivo (48-h) waterborne exposure with nano-TiO2 (10 mgL−1), crude oil WAF (0.068 gL−1), alone and in combination was performed. Combined exposure significantly reduced levels of polycyclic aromatic hydrocarbons (PAH) in either seawater and fish fillets compared to WAF alone. A significant reduction in the expression of several biotransformation genes (cyp1a, gsta, erβ2, elmod2, abcb1 and abcc1) when nano-TiO2 was combined with WAF was observed in fish liver, compared to WAF alone. EROD and GST enzyme activities were also significantly reduced. Nano-TiO2 can reduce PAHs bioavailability in seawater and biological responses in European sea bass, suggesting a potential safe application of nano-TiO2 for the remediation of crude oil WAF in the marine environment.

中文翻译:


纳米 TiO2 降低了欧洲鲈鱼 Dicentrachus labrax 对原油 WAF 相关多环芳烃的生物利用度和生物转化反应



本研究调查了纳米二氧化钛 (nano-TiO2) 与原油和相关化学品的水容纳馏分 (WAF) 之间对欧洲鲈鱼 (Dicentrarchus labrax) 生物利用度和生物转化反应的潜在相互作用。使用纳米 TiO 2 (10 mgL-1)、原油 WAF (0.068 gL-1) 单独和组合进行体内 (48 小时) 水生暴露。与单独使用 WAF 相比,联合暴露显著降低了海水和鱼片中多环芳烃 (PAH) 的水平。与单独使用 WAF 相比,当纳米 TiO2 与 WAF 结合时,在鱼肝脏中观察到几种生物转化基因 (cyp1a、gsta、erβ2、elmod2、abcb1 和 abcc1) 的表达显著降低。EROD 和 GST 酶活性也显著降低。纳米 TiO2 可以降低 PAHs 在海水中的生物利用度和欧洲鲈鱼的生物反应,这表明纳米 TiO2 在海洋环境中修复原油 WAF 具有潜在的安全应用。
更新日期:2024-11-12
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