微塑料会导致污染诱发的神经毒性吗？一项针对真实环境中野生鱼类的初步研究。
Are microplastics contributing to pollution-induced neurotoxicity? A pilot study with wild fish in a real scenario.
作者信息
Barboza Luís Gabriel A, Otero Xosé L, Fernández Ezequiel V, Vieira Luís R, Fernandes José O, Cunha Sara C, Guilhermino Lúcia
机构信息
CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Research Team of Ecotoxicology, Stress Ecology and Environmental Health (ECOTOX), Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, s/n, 4450-208, Matosinhos, Portugal.
ICBAS - School of Medicine and Biomedical Sciences, University of Porto, Department of Populations Study, Laboratory of Ecotoxicology and Ecology (ECOTOX), Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.
出版信息
Heliyon. 2023 Jan 20;9(1):e13070. doi: 10.1016/j.heliyon.2023.e13070. eCollection 2023 Jan.
Pollution-induced neurotoxicity is of high concern. This pilot study investigated the potential relationship between the presence of microplastics (MPs) in the brain of 180 wild fish (, ) from a contaminated estuary and the activity of the acetylcholinesterase (AChE) enzyme. MPs were found in 9 samples (5% of the total), all of them from collected in the summer, which represents 45% of the samples of this species collected in that season (20). Seventeen MPs were recovered from brain samples, with sizes ranging from 8 to 96 μm. Polyacrylamide, polyacrylic acid and one biopolymer (zein) were identified by Micro-Raman spectroscopy. Fish with MPs showed lower (p ≤ 0.05) AChE activity than those where MPs were not found. These findings point to the contribution of MPs to the neurotoxicity induced by long-term exposure to pollution, stressing the need of further studies on the topic to increase 'One Health' protection.
污染诱导的神经毒性备受关注。这项初步研究调查了来自受污染河口的180条野生鱼类大脑中微塑料（MPs）的存在与乙酰胆碱酯酶（AChE）活性之间的潜在关系。在9个样本（占总数的5%）中发现了微塑料，所有这些样本均来自夏季采集的鱼，占该季节采集的该物种样本的45%（20个）。从脑样本中回收了17个微塑料，尺寸范围为8至96微米。通过显微拉曼光谱鉴定出了聚丙烯酰胺、聚丙烯酸和一种生物聚合物（玉米醇溶蛋白）。有微塑料的鱼的AChE活性低于未发现微塑料的鱼（p≤0.05）。这些发现表明微塑料对长期接触污染所致神经毒性有影响，强调需要对该主题进行进一步研究以加强“同一健康”保护。
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