越南红河三角洲与微塑料相关的产广谱β-内酰胺酶(ESBL)细菌的首次证据

IF 6.6 Q1 ENGINEERING, ENVIRONMENTAL Journal of hazardous materials letters Pub Date : 2024-10-02 DOI:10.1016/j.hazl.2024.100129
Le Thanh Thao , Vu Thi Thu Hien , Nguyen Thuy Tram , Vo Hoai Hieu , Tony Gutierrez , Hoang Thi Thu Ha , Pham My Dung , Ngo Thi Thuy Huong
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引用次数: 0

摘要

本研究调查了红河三角洲的 MiPs、抗生素耐药基因(ARGs)和水质之间的关系。从四个地点的水样中收集了米磷:河内、河南、南定和猫坝岛。对从 MiPs 及其周围水体中分离出的细菌进行了β-内酰胺酶基因分析。聚对苯二甲酸乙二醇酯(PET)和聚十三内酯(PTDL)与水稻秧苗上的微生物数量呈显著的相关系数。气单胞菌(占所有分离菌株的 99.2%)是最常见的从 MiPs 上分离的细菌,大肠杆菌较少(0.83%)。从微塑料中分离出的 207 株细菌中有 23 株(约占总数的 11%)携带抗生素耐药基因,主要是 blaTEM(13/23;56.5%)、blaSHV(9/23;39.1%)和 blaCTXM-9(1/23;4.3%)。所测量的七种环境因素都会影响MiP表面ARGs和ARBs的分布。叶绿素-a 与 ARB 丰度呈强正相关,表明初级生产力与细菌定殖之间存在潜在联系。这项研究是首批报道中微囊藻与抗生素微生物群和基因相关性的研究之一。在人烟稠密的地区,MiPs 上存在的 ARGs 突出表明,需要采取有效的污染管理策略来降低 AMR 带来的风险。
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First evidence of microplastic-associated extended-spectrum beta-lactamase (ESBL)-producing bacteria in the Red River Delta, Vietnam
This study investigated the relationship between MiPs, antibiotic resistance genes (ARGs), and water quality in the Red River Delta. MiPs were collected from water samples at four locations: Hanoi, Ha Nam, Nam Dinh, and Cat Ba Island. Bacteria isolated from MiPs and the surrounding water were analyzed for β-lactamase genes. Polyethylene terephthalate (PET) and polytridecanolactone (PTDL) exhibited notable correlations with coefficients with microbial abundance on MiPs. Aeromonas (99.2 % of all isolates) were the most common bacteria isolated from MiPs, with a fewer Escherichia coli (0.83 %). Of 207 bacterial strains isolated from microplastic, 23 (~11 % of total) were found to carry antibiotic resistance genes, mostly blaTEM (13/23; 56.5 %), blaSHV (9/23; 39.1 %) and blaCTXM-9 (1/23; 4.3 %). All seven environmental factors measured were found to affect the distribution of ARGs and ARBs on MiP surfaces. Chlorophyll-a showed a strong positive correlation with ARB abundance, suggesting a potential link between primary productivity and bacterial colonization. This study is one of the first to report the association of MPs with antibiotic-resistant microbiota and genes. The presence of ARGs on MiPs in areas with high human population highlights the need for effective pollution management strategies to mitigate the risks associated with AMR.
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来源期刊
Journal of hazardous materials letters
Journal of hazardous materials letters Pollution, Health, Toxicology and Mutagenesis, Environmental Chemistry, Waste Management and Disposal, Environmental Engineering
CiteScore
10.30
自引率
0.00%
发文量
0
审稿时长
20 days
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