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Bertrans-Tubau L, Martínez-Campos S, Lopez-Doval J, Abril M, Ponsá S, Salvadó V, Hidalgo M, Pico-Tomàs A, Balcazar JL, Proia L. Nature-based bioreactors: Tackling antibiotic resistance in urban wastewater treatment. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 2024; 22:100445. [PMID: 39055482 PMCID: PMC11269294 DOI: 10.1016/j.ese.2024.100445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 06/24/2024] [Accepted: 06/27/2024] [Indexed: 07/27/2024]
Abstract
The overuse and misuse of antibiotics have accelerated the selection of antibiotic-resistant bacteria, significantly impacting human, animal, and environmental health. As aquatic environments are vulnerable to antibiotic resistance, suitable management practices should be adopted to tackle this phenomenon. Here we show an effective, nature-based solution for reducing antibiotic resistance from actual wastewater. We utilize a bioreactor that relies on benthic (biofilms) and planktonic microbial communities to treat secondary effluent from a small urban wastewater treatment plant (<10,000 population equivalent). This treated effluent is eventually released into the local aquatic ecosystem. We observe high removal efficiency for genes that provide resistance to commonly used antibiotic families, as well as for mobile genetic elements that could potentially aid in their spread. Importantly, we notice a buildup of sulfonamide (sul1 and sul2) and tetracycline (tet(C), tet(G), and tetR) resistance genes specifically in biofilms. This advancement marks the initial step in considering this bioreactor as a nature-based, cost-effective tertiary treatment option for small UWWTPs facing antibiotic resistance challenges.
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Affiliation(s)
- Lluís Bertrans-Tubau
- BETA Technological Centre- University of Vic- Central University of Catalunya (BETA- UVIC- UCC), Carretera de Roda 70, 08500, Vic, Barcelona, Spain
| | - Sergio Martínez-Campos
- BETA Technological Centre- University of Vic- Central University of Catalunya (BETA- UVIC- UCC), Carretera de Roda 70, 08500, Vic, Barcelona, Spain
| | - Julio Lopez-Doval
- BETA Technological Centre- University of Vic- Central University of Catalunya (BETA- UVIC- UCC), Carretera de Roda 70, 08500, Vic, Barcelona, Spain
| | - Meritxell Abril
- BETA Technological Centre- University of Vic- Central University of Catalunya (BETA- UVIC- UCC), Carretera de Roda 70, 08500, Vic, Barcelona, Spain
| | - Sergio Ponsá
- BETA Technological Centre- University of Vic- Central University of Catalunya (BETA- UVIC- UCC), Carretera de Roda 70, 08500, Vic, Barcelona, Spain
| | - Victoria Salvadó
- Chemistry Department, University of Girona. Campus Montilivi, 17005, Girona, Spain
| | - Manuela Hidalgo
- Chemistry Department, University of Girona. Campus Montilivi, 17005, Girona, Spain
| | - Anna Pico-Tomàs
- Catalan Institute Water Research (ICRA-CERCA), Emili Grahit 101, 17003, Girona, Spain
| | - Jose Luis Balcazar
- Catalan Institute Water Research (ICRA-CERCA), Emili Grahit 101, 17003, Girona, Spain
- University of Girona, 17004, Girona, Spain
| | - Lorenzo Proia
- BETA Technological Centre- University of Vic- Central University of Catalunya (BETA- UVIC- UCC), Carretera de Roda 70, 08500, Vic, Barcelona, Spain
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2
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Flórez NY, Silva C, Villarreal JM, Wiesner M. Presence of integrons and their correlation with multidrug resistance in Salmonella enterica serovar Typhimurium: Exploratory systematic review. BIOMEDICA : REVISTA DEL INSTITUTO NACIONAL DE SALUD 2024; 44:258-276. [PMID: 39088536 DOI: 10.7705/biomedica.6816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 03/18/2024] [Indexed: 08/03/2024]
Abstract
In Salmonella enterica serovar Typhimurium (Typhimurium), multidrug resistance is associated with integrons carrying resistance genes dispersed by mobile genetic elements. This exploratory systematic review sought to identify integron types and their resistance genes in multidrug resistance Typhimurium isolates. We used Medline, PubMed, SciELO, ScienceDirect, Redalyc, and Google Scholar as motor searchers for articles in Spanish or English published between 2012 and 2020, including the keywords “integrons”, “antibiotic resistance”, and “Salmonella Typhimurium”. We included 38 articles reporting multidrug resistance up to five antibiotic families. Class 1 integrons with aadA2 and blaPSE-1 gene cassettes were predominant, some probably related to the Salmonella genomic island 1. We did not find studies detailing class 1 and 2 integrons in the same isolate, nor class 3 integrons reported. The presence of integrons largely explains the resistance profiles found in isolates from different sources in 15 countries.
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Affiliation(s)
- Nancy Yaneth Flórez
- Grupo de Microbiología, Dirección de Investigación en Salud Pública, Instituto Nacional de Salud, Bogotá, D. C., Colombia; Doctorado en Ciencias de la Salud, Facultad de Medicina, Universidad Antonio Nariño, Bogotá, D. C., Colombia
| | - Claudia Silva
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, México
| | - José Miguel Villarreal
- Grupo de Bioquímica y Biología Molecular de las Micobacterias, Facultad de Ciencias, Universidad Nacional de Colombia, Bogotá, D. C., Colombia; Grupo de Investigación en Enfermedades Infecciosas, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, D. C., Colombia
| | - Magdalena Wiesner
- Grupo de Microbiología, Dirección de Investigación en Salud Pública, Instituto Nacional de Salud, Bogotá, D. C., Colombia
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3
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Horvath ERB, Stein MG, Mulvey MA, Hernandez EJ, Winter JM. Resistance Gene Association and Inference Network (ReGAIN): A Bioinformatics Pipeline for Assessing Probabilistic Co-Occurrence Between Resistance Genes in Bacterial Pathogens. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.26.582197. [PMID: 38464005 PMCID: PMC10925210 DOI: 10.1101/2024.02.26.582197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
The rampant rise of multidrug resistant (MDR) bacterial pathogens poses a severe health threat, necessitating innovative tools to unravel the complex genetic underpinnings of antimicrobial resistance. Despite significant strides in developing genomic tools for detecting resistance genes, a gap remains in analyzing organism-specific patterns of resistance gene co-occurrence. Addressing this deficiency, we developed the Resistance Gene Association and Inference Network (ReGAIN), a novel web-based and command line genomic platform that uses Bayesian network structure learning to identify and map resistance gene networks in bacterial pathogens. ReGAIN not only detects resistance genes using well-established methods, but also elucidates their complex interplay, critical for understanding MDR phenotypes. Focusing on ESKAPE pathogens, ReGAIN yielded a queryable database for investigating resistance gene co-occurrence, enriching resistome analyses, and providing new insights into the dynamics of antimicrobial resistance. Furthermore, the versatility of ReGAIN extends beyond antibiotic resistance genes to include assessment of co-occurrence patterns among heavy metal resistance and virulence determinants, providing a comprehensive overview of key gene relationships impacting both disease progression and treatment outcomes.
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Affiliation(s)
- Elijah R Bring Horvath
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, Utah, 84112, United States
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah, 84112, United States
| | - Mathew G Stein
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, Utah, 84112, United States
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah, 84112, United States
- School of Biological Sciences, University of Utah, Salt Lake City, UT 84112, United States
- Henry Eyring Center for Cell & Genome Science, University of Utah, Salt Lake City, UT 84112, United States
- Department of Biomedical Informatics, University of Utah, Salt Lake City, Utah, 84112, United States
| | - Matthew A Mulvey
- School of Biological Sciences, University of Utah, Salt Lake City, UT 84112, United States
- Henry Eyring Center for Cell & Genome Science, University of Utah, Salt Lake City, UT 84112, United States
| | - Edgar J Hernandez
- Department of Biomedical Informatics, University of Utah, Salt Lake City, Utah, 84112, United States
| | - Jaclyn M Winter
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, Utah, 84112, United States
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4
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Richard E, Darracq B, Littner E, Vit C, Whiteway C, Bos J, Fournes F, Garriss G, Conte V, Lapaillerie D, Parissi V, Rousset F, Skovgaard O, Bikard D, Rocha EPC, Mazel D, Loot C. Cassette recombination dynamics within chromosomal integrons are regulated by toxin-antitoxin systems. SCIENCE ADVANCES 2024; 10:eadj3498. [PMID: 38215203 DOI: 10.1126/sciadv.adj3498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 12/14/2023] [Indexed: 01/14/2024]
Abstract
Integrons are adaptive bacterial devices that rearrange promoter-less gene cassettes into variable ordered arrays under stress conditions, thereby sampling combinatorial phenotypic diversity. Chromosomal integrons often carry hundreds of silent gene cassettes, with integrase-mediated recombination leading to rampant DNA excision and integration, posing a potential threat to genome integrity. How this activity is regulated and controlled, particularly through selective pressures, to maintain such large cassette arrays is unknown. Here, we show a key role of promoter-containing toxin-antitoxin (TA) cassettes as systems that kill the cell when the overall cassette excision rate is too high. These results highlight the importance of TA cassettes regulating the cassette recombination dynamics and provide insight into the evolution and success of integrons in bacterial genomes.
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Affiliation(s)
- Egill Richard
- Institut Pasteur, Université Paris Cité, CNRS UMR3525, Unité Plasticité du Génome Bactérien, 75015 Paris, France
- Sorbonne Université, ED515, F-75005 Paris, France
| | - Baptiste Darracq
- Institut Pasteur, Université Paris Cité, CNRS UMR3525, Unité Plasticité du Génome Bactérien, 75015 Paris, France
- Sorbonne Université, ED515, F-75005 Paris, France
| | - Eloi Littner
- Sorbonne Université, ED515, F-75005 Paris, France
- Institut Pasteur, Université Paris Cité, CNRS UMR3525, Microbial Evolutionary Genomics, 75015 Paris, France
- DGA CBRN Defence, 91710 Vert-le-Petit, France
| | - Claire Vit
- Institut Pasteur, Université Paris Cité, CNRS UMR3525, Unité Plasticité du Génome Bactérien, 75015 Paris, France
- Sorbonne Université, ED515, F-75005 Paris, France
| | - Clémence Whiteway
- Institut Pasteur, Université Paris Cité, CNRS UMR3525, Unité Plasticité du Génome Bactérien, 75015 Paris, France
| | - Julia Bos
- Institut Pasteur, Université Paris Cité, CNRS UMR3525, Unité Plasticité du Génome Bactérien, 75015 Paris, France
| | - Florian Fournes
- Institut Pasteur, Université Paris Cité, CNRS UMR3525, Unité Plasticité du Génome Bactérien, 75015 Paris, France
| | - Geneviève Garriss
- Institut Pasteur, Université Paris Cité, CNRS UMR3525, Unité Plasticité du Génome Bactérien, 75015 Paris, France
| | - Valentin Conte
- Institut Pasteur, Université Paris Cité, CNRS UMR3525, Unité Plasticité du Génome Bactérien, 75015 Paris, France
| | - Delphine Lapaillerie
- University of Bordeaux, Fundamental Microbiology and Pathogenicity Laboratory, CNRS, UMR 5234, SFR TransBioMed, Bordeaux, France
- Viral DNA Integration and Chromatin Dynamics Network (DyNAVir), France
| | - Vincent Parissi
- University of Bordeaux, Fundamental Microbiology and Pathogenicity Laboratory, CNRS, UMR 5234, SFR TransBioMed, Bordeaux, France
- Viral DNA Integration and Chromatin Dynamics Network (DyNAVir), France
| | - François Rousset
- Institut Pasteur, Université Paris Cité, CNRS UMR6047, Synthetic Biology, 75015 Paris, France
| | - Ole Skovgaard
- Department of Science, Systems and Models, Roskilde University, Roskilde DK-4000, Denmark
| | - David Bikard
- Institut Pasteur, Université Paris Cité, CNRS UMR6047, Synthetic Biology, 75015 Paris, France
| | - Eduardo P C Rocha
- Institut Pasteur, Université Paris Cité, CNRS UMR3525, Microbial Evolutionary Genomics, 75015 Paris, France
| | - Didier Mazel
- Institut Pasteur, Université Paris Cité, CNRS UMR3525, Unité Plasticité du Génome Bactérien, 75015 Paris, France
| | - Céline Loot
- Institut Pasteur, Université Paris Cité, CNRS UMR3525, Unité Plasticité du Génome Bactérien, 75015 Paris, France
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5
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Carneiro J, Pascoal F, Semedo M, Pratas D, Tomasino MP, Rego A, Carvalho MDF, Mucha AP, Magalhães C. Mapping human pathogens in wastewater using a metatranscriptomic approach. ENVIRONMENTAL RESEARCH 2023; 231:116040. [PMID: 37150387 PMCID: PMC10172761 DOI: 10.1016/j.envres.2023.116040] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 04/28/2023] [Accepted: 05/02/2023] [Indexed: 05/09/2023]
Abstract
The monitoring of cities' wastewaters for the detection of potentially pathogenic viruses and bacteria has been considered a priority during the COVID-19 pandemic to monitor public health in urban environments. The methodological approaches frequently used for this purpose include deoxyribonucleic acid (DNA)/Ribonucleic acid (RNA) isolation followed by quantitative polymerase chain reaction (qPCR) and reverse transcription (RT)‒qPCR targeting pathogenic genes. More recently, the application of metatranscriptomic has opened opportunities to develop broad pathogenic monitoring workflows covering the entire pathogenic community within the sample. Nevertheless, the high amount of data generated in the process requires an appropriate analysis to detect the pathogenic community from the entire dataset. Here, an implementation of a bioinformatic workflow was developed to produce a map of the detected pathogenic bacteria and viruses in wastewater samples by analysing metatranscriptomic data. The main objectives of this work was the development of a computational methodology that can accurately detect both human pathogenic virus and bacteria in wastewater samples. This workflow can be easily reproducible with open-source software and uses efficient computational resources. The results showed that the used algorithms can predict potential human pathogens presence in the tested samples and that active forms of both bacteria and virus can be identified. By comparing the computational method implemented in this study to other state-of-the-art workflows, the implementation analysis was faster, while providing higher accuracy and sensitivity. Considering these results, the processes and methods to monitor wastewater for potential human pathogens can become faster and more accurate. The proposed workflow is available at https://github.com/waterpt/watermonitor and can be implemented in currently wastewater monitoring programs to ascertain the presence of potential human pathogenic species.
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Affiliation(s)
- João Carneiro
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros Do Porto de Leixões, Av. General Norton de Matos, S/n, 4450-208, Matosinhos, Portugal.
| | - Francisco Pascoal
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros Do Porto de Leixões, Av. General Norton de Matos, S/n, 4450-208, Matosinhos, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Rua Do Campo Alegre S/n, 4169- 007, Porto, Portugal
| | - Miguel Semedo
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros Do Porto de Leixões, Av. General Norton de Matos, S/n, 4450-208, Matosinhos, Portugal
| | - Diogo Pratas
- IEETA - Institute of Electronics and Informatics Engineering of Aveiro, University of Aveiro, Portugal; Department of Virology, University of Helsinki, Finland; Department of Electronics Telecommunications and Informatics, University of Aveiro, Portugal
| | - Maria Paola Tomasino
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros Do Porto de Leixões, Av. General Norton de Matos, S/n, 4450-208, Matosinhos, Portugal
| | - Adriana Rego
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros Do Porto de Leixões, Av. General Norton de Matos, S/n, 4450-208, Matosinhos, Portugal
| | - Maria de Fátima Carvalho
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros Do Porto de Leixões, Av. General Norton de Matos, S/n, 4450-208, Matosinhos, Portugal; School of Medicine and Biomedical Sciences (ICBAS), University of Porto, Portugal
| | - Ana Paula Mucha
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros Do Porto de Leixões, Av. General Norton de Matos, S/n, 4450-208, Matosinhos, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Rua Do Campo Alegre S/n, 4169- 007, Porto, Portugal
| | - Catarina Magalhães
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros Do Porto de Leixões, Av. General Norton de Matos, S/n, 4450-208, Matosinhos, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Rua Do Campo Alegre S/n, 4169- 007, Porto, Portugal
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6
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Dong Z, Wang J, Wang L, Zhu L, Wang J, Zhao X, Kim YM. Distribution of quinolone and macrolide resistance genes and their co-occurrence with heavy metal resistance genes in vegetable soils with long-term application of manure. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2022; 44:3343-3358. [PMID: 34559332 DOI: 10.1007/s10653-021-01102-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 09/10/2021] [Indexed: 06/13/2023]
Abstract
The spread of antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) has become an increasingly serious global public health issue. This study investigated the distribution characteristics and influencing factors of ARB and ARGs in greenhouse vegetable soils with long-term application of manure. Five typical ARGs, four heavy metal resistance genes (MRGs), and two mobile genetic elements (MGEs) were quantified by real-time quantitative polymerase chain reaction (qPCR). The amount of ARB in manure-improved soil greatly exceeded that in control soil, and the bacterial resistance rate decreased significantly with increases in antibiotic concentrations. In addition, the resistance rate of ARB to enrofloxacin (ENR) was lower than that of tylosin (TYL). Real-time qPCR results showed that long-term application of manure enhanced the relative abundance of ARGs in vegetable soils, and the content and proportion of quinolone resistance genes were higher than those of macrolide resistance genes. Redundancy analysis (RDA) showed that qepA and qnrS significantly correlated with total and available amounts of Cu and Zn, highlighting that certain heavy metals can influence persistence of ARGs. Integrase gene intI1 correlated significantly with the relative abundance of qepA, qnrS, and ermF, suggesting that intI1 played an important role in the horizontal transfer of ARGs. Furthermore, there was a weakly but not significantly positive correlation between specific detected MRGs and ARGs and MGEs. The results of this study enhance understanding the potential for increasing ARGs in manure-applied soil, assessing ecological risk and reducing the spread of ARGs.
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Affiliation(s)
- Zikun Dong
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, People's Republic of China
| | - Jinhua Wang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, People's Republic of China.
| | - Lanjun Wang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, People's Republic of China
| | - Lusheng Zhu
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, People's Republic of China
| | - Jun Wang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, People's Republic of China
| | - Xiang Zhao
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Key Laboratory of Agricultural Environment in Universities of Shandong, College of Resources and Environment, Shandong Agricultural University, 61 Daizong Road, Tai'an, 271018, People's Republic of China
| | - Young Mo Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seongdong-gu, Seoul, 04763, Republic of Korea
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7
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Zhang Y, Li D, Yan Q, Xu P, Chen W, Xin H, Wu D, Zhou M, Xu Y, Zhang A, Wei W, Jiang Z. Genome-wide analysis reveals the emergence of multidrug resistant Stenotrophomonas acidaminiphila strain SINDOREI isolated from a patient with sepsis. Front Microbiol 2022; 13:989259. [PMID: 36212813 PMCID: PMC9537462 DOI: 10.3389/fmicb.2022.989259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 08/19/2022] [Indexed: 11/24/2022] Open
Abstract
Stenotrophomonas acidaminiphila, the most recent reported species in genus Stenotrophomonas, is a relatively rare bacteria and is an aerobic, glucose non-fermentative, Gram-negative bacterium. However, little information of S. acidaminiphila is known to cause human infections. In this research, we firstly reported a multidrug-resistant strain S. acidaminiphila SINDOREI isolated from the blood of a patient with sepsis, who was dead of infection eventually. The whole genome of strain SINDOREI was sequenced, and genome comparisons were performed among six closely related S. acidaminiphila strains. The core genes (2,506 genes) and strain-specific genes were identified, respectively, to know about the strain-level diversity in six S. acidaminiphila stains. The presence of a unique gene (narG) and essential genes involved in biofilm formation in strain SINDOREI are important for the pathogenesis of infections. Strain SINDOREI was resistant to trimethoprim/sulfamethoxazole, ciprofloxacin, ofloxacin, cefepime, ceftazidime, and aztreonam. Several common and specific antibiotic resistance genes were identified in strain SINDOREI. The presence of two sul genes and exclusive determinants GES-1, aadA3, qacL, and cmlA5 is responsible for the resistance to multidrug. The virulence factors and resistance determinants can show the relationship between the phenotype and genotype and afford potential therapeutic strategies for infections.
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Affiliation(s)
- Ying Zhang
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital, Changsha, China
- Hunan Hematology Oncology Clinical Medical Research Center, Changsha, China
- National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Danhua Li
- Departmant of Scientific Affairs, Hugobiotech Co. Ltd., Beijing, China
| | - Qun Yan
- Department of Laboratory Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Ping Xu
- Department of Pharmacy, The Second Xiangya Hospital, Central South University, Changsha, China
- Institute of Clinical Pharmacy, Central South University, Changsha, China
| | - Wei Chen
- Department of Gastroenterology, Changsha Central Hospital, Changsha, China
| | - Hongya Xin
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital, Changsha, China
- Hunan Hematology Oncology Clinical Medical Research Center, Changsha, China
- National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Dengshu Wu
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital, Changsha, China
- Hunan Hematology Oncology Clinical Medical Research Center, Changsha, China
- National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Mingxiang Zhou
- Department of Laboratory Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Yajing Xu
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital, Changsha, China
- Hunan Hematology Oncology Clinical Medical Research Center, Changsha, China
- National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Ao Zhang
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital, Changsha, China
- Hunan Hematology Oncology Clinical Medical Research Center, Changsha, China
- National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Wenjia Wei
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital, Changsha, China
- Hunan Hematology Oncology Clinical Medical Research Center, Changsha, China
- National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Zhiping Jiang
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital, Changsha, China
- Hunan Hematology Oncology Clinical Medical Research Center, Changsha, China
- National Clinical Research Center for Hematologic Diseases, The First Affiliated Hospital of Soochow University, Suzhou, China
- *Correspondence: Zhiping Jiang,
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Genomic Analysis of Carbapenem-Resistant Comamonas in Water Matrices: Implications for Public Health and Wastewater Treatments. Appl Environ Microbiol 2022; 88:e0064622. [PMID: 35708324 DOI: 10.1128/aem.00646-22] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Comamonas spp. are Gram-negative bacteria that catabolize a wide range of organic and inorganic substrates. Comamonas spp. are abundant in aquatic and soil environments, including wastewater, and can cause opportunistic infections in humans. Because of their potential in wastewater bioaugmentation and bioremediation strategies, the identification of Comamonas species harboring genes encoding carbapenemases and other clinically important antibiotic resistance genes warrant further investigation. Here, we present an analysis of 39 whole-genome sequences comprising three Comamonas species from aquatic environments in South Australia that were recovered on media supplemented with carbapenems. The analysis includes a detailed description of 33 Comamonas denitrificans isolates, some of which carried chromosomally acquired blaGES-5, blaOXA, and aminoglycoside resistance (aadA) genes located on putative genomic islands (GIs). All blaGES-5- and blaOXA-containing GIs appear to be unique to this Australian collection of C. denitrificans. Notably, most open reading frames (ORFs) within the GIs, including all antimicrobial resistance (AMR) genes, had adjacent attC sites, indicating that these ORFs are mobile gene cassettes. One C. denitrificans isolate carried an IncP-1 plasmid with genes involved in xenobiotic degradation and response to oxidative stress. Our assessment of the sequences highlights the very distant nature of C. denitrificans to the other Comamonas species and its apparent disposition to acquire antimicrobial resistance genes on putative genomic islands. IMPORTANCE Antimicrobial resistance (AMR) poses a global public health threat, and the increase in resistance to "last-resort drugs," such as carbapenems, is alarming. Wastewater has been flagged as a hot spot for AMR evolution. Comamonas spp. are among the most common bacteria in wastewater and play a role in its bioaugmentation. While the ability of Comamonas species to catabolize a wide range of organic and inorganic substrates is well documented, some species are also opportunistic pathogens. However, data regarding AMR in Comamonas spp. are limited. Here, through the genomic analyses of 39 carbapenem-resistant Comamonas isolates, we make several key observations, including the identification of a subset of C. denitrificans isolates that harbored genomic islands encoding carbapenemase blaGES-5 or extended-spectrum β-lactamase blaOXA alleles. Given the importance of Comamonas species in potential wastewater bioaugmentation and bioremediation strategies, as well as their status as emerging pathogens, the acquisition of critically important antibiotic resistance genes on genomic islands warrants future monitoring.
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9
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Selvaraj GK, Wang H, Zhang Y, Tian Z, Chai W, Lu H. Class 1 In-Tn5393c array contributed to antibiotic resistance of non-pathogenic Pseudoxanthomonas mexicana isolated from a wastewater bioreactor treating streptomycin. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 821:153537. [PMID: 35101502 DOI: 10.1016/j.scitotenv.2022.153537] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/23/2022] [Accepted: 01/26/2022] [Indexed: 06/14/2023]
Abstract
The emergence of antibiotic resistance in retort to environmental pollutants during wastewater treatment still remains elusive. Here, we first to investigate the emergence of antibiotic resistance in an environmental non-pathogenic bacterium, Pseudoxanthomonas mexicana isolated from a lab-scale bioreactor treating wastewater containing streptomycin. The molecular mechanism of antibiotic resistance development was evaluated in its genomic, transcriptional, and proteomic levels. The streptomycin resistant (SR) strain showed strong resistance to streptomycin (MIC > 600 μg/mL) as well to sulfamethoxazole, ampicillin, and kanamycin (≥250 μg/mL). A 13.4 kb class-1-integron array consisting of a new arrangement of gene cassette (IS6100-sul1-aadA2-catB3-aacA1-2-aadB-int1-IS256-int) linked with Tn5393c transposon was identified in the SR strain, which has only been reported in clinical pathogens so far. iTRAQ-LC-MS/MS proteomics revealed 22 up-regulated proteins in the SR strain growing under 100 mg L-1 streptomycin, involving antibiotic resistance, toxin production, stress response, and ribosomal protein synthesis. At the mRNA level, elevated expressions of ARGs (strA, strB, and aadB) and 30S-ribosomal protein genes (rpsA and rpsU) were observed in the SR strain. The results highlighted the genomic plasticity and multifaceted regulatory mechanism employed by P. mexicana in adaptation to high-level streptomycin during biological wastewater treatment.
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Affiliation(s)
- Ganesh-Kumar Selvaraj
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Department of Microbiology, St. Peter's Institute of Higher Education and Research, Chennai 600054, Tamil Nadu, India
| | - Hanqing Wang
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yu Zhang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Zhe Tian
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Wenbo Chai
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Huijie Lu
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
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10
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Wang Q, Hou Z, Li L, Guo S, Liang H, Li M, Luo H, Wang L, Luo Y, Ren H. Seasonal disparities and source tracking of airborne antibiotic resistance genes in Handan, China. JOURNAL OF HAZARDOUS MATERIALS 2022; 422:126844. [PMID: 34399210 DOI: 10.1016/j.jhazmat.2021.126844] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 08/02/2021] [Accepted: 08/04/2021] [Indexed: 06/13/2023]
Abstract
The transmission of airborne antibiotic resistance genes (ARGs) loaded on particle is a significant global public health concern. Up to date, the dispersal pattern of airborne ARGs remains unclear despite their critical role in multiregional transmission. In this study, airborne ARGs loaded on fine particulate matter (PM2.5) and source tracking based on the airflow trajectories were performed by the potential source contribution function (PSCF) and concentration weighted trajectory (CWT) model. The results show that the absolute abundance of ARG subtypes were generally twice times higher in the winter season than that in the summer season, which could be attributable to winter haze events with high particulate matter concentrations in Handan. Exogenous input from serious haze events and local release of ARGs loaded on PM2.5 of air masses may cause higher levels of ARGs in the winter. Moreover, based on the positive correlation between the abundance of ARGs and PM2.5 concentration, a source tracing model of airborne ARGs was proposed to the estimate of ARGs release and dissemination. This study highlights airborne ARGs transmission loaded on PM2.5 of air masses, which facilitating the global spread of antibiotic resistance.
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Affiliation(s)
- Qing Wang
- College of Energy and Environmental Engineering, Hebei Key Laboratory of Air Pollution Cause and Impact, Hebei University of Engineering, Handan 056038, China; State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, China
| | - Zelin Hou
- College of Energy and Environmental Engineering, Hebei Key Laboratory of Air Pollution Cause and Impact, Hebei University of Engineering, Handan 056038, China
| | - Linyun Li
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Tianjin 300071, China
| | - Shaoyue Guo
- College of Energy and Environmental Engineering, Hebei Key Laboratory of Air Pollution Cause and Impact, Hebei University of Engineering, Handan 056038, China
| | - Haiyin Liang
- College of Energy and Environmental Engineering, Hebei Key Laboratory of Air Pollution Cause and Impact, Hebei University of Engineering, Handan 056038, China
| | - Menghan Li
- College of Energy and Environmental Engineering, Hebei Key Laboratory of Air Pollution Cause and Impact, Hebei University of Engineering, Handan 056038, China
| | - Huixiao Luo
- College of Energy and Environmental Engineering, Hebei Key Laboratory of Air Pollution Cause and Impact, Hebei University of Engineering, Handan 056038, China
| | - Litao Wang
- College of Energy and Environmental Engineering, Hebei Key Laboratory of Air Pollution Cause and Impact, Hebei University of Engineering, Handan 056038, China.
| | - Yi Luo
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, China; College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Tianjin 300071, China.
| | - Hongqiang Ren
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, China
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Yang Y, Zhang AN, Che Y, Liu L, Deng Y, Zhang T. Underrepresented high diversity of class 1 integrons in the environment uncovered by PacBio sequencing using a new primer. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 787:147611. [PMID: 34000537 DOI: 10.1016/j.scitotenv.2021.147611] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 05/01/2021] [Accepted: 05/04/2021] [Indexed: 06/12/2023]
Abstract
Class 1 integrons (CL1s) are one of the major contributors to the horizontal transfer of antibiotic resistance genes (ARGs). However, our knowledge of CL1 in the environment is still very limited due to the limitations of the current PCR primers and the sequencing methods adopted. This study developed a new primer coupled with PacBio sequencing to investigate the underrepresented diversity of CL1s in a mixed environmental sample (i.e. activated sludge from wastewater treatment plant and pig feces from animal farm). The new primer successfully uncovered 20 extra ARGs subtypes and 57% (422/739) more unique integron array structures than the previous primers. Compared to the whole genome database, CL1s revealed in the environment in this study were of much greater diversity, having 93% (900/967) novel array structures. Antibiotic resistance is the predominant function (78.3% genes) carried by CL1, and a vast majority (98.6% genes) of them confer resistance to aminoglycoside, beta-lactam, trimethoprim, or chloramphenicol. Additionally, 78.5% unique CL1 arrays carried more than one ARGs, and 25.9% of them carried ARGs of clinical relevance with high transferability potential posing threat to the general public. Our results indicated the importance of CL1s in the spread of ARGs. Overall, combining PacBio sequencing with the new primer designed in this study largely broadened our knowledge of CL1s in the environment and their significance in the environmental proliferation of ARGs.
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Affiliation(s)
- Yu Yang
- Environmental Microbiome Engineering and Biotechnology Laboratory, Centre for Environmental Engineering Research, Department of Civil Engineering, The University of Hong Kong, Hong Kong
| | - An-Ni Zhang
- Environmental Microbiome Engineering and Biotechnology Laboratory, Centre for Environmental Engineering Research, Department of Civil Engineering, The University of Hong Kong, Hong Kong
| | - You Che
- Environmental Microbiome Engineering and Biotechnology Laboratory, Centre for Environmental Engineering Research, Department of Civil Engineering, The University of Hong Kong, Hong Kong
| | - Lei Liu
- Environmental Microbiome Engineering and Biotechnology Laboratory, Centre for Environmental Engineering Research, Department of Civil Engineering, The University of Hong Kong, Hong Kong
| | - Yu Deng
- Environmental Microbiome Engineering and Biotechnology Laboratory, Centre for Environmental Engineering Research, Department of Civil Engineering, The University of Hong Kong, Hong Kong
| | - Tong Zhang
- Environmental Microbiome Engineering and Biotechnology Laboratory, Centre for Environmental Engineering Research, Department of Civil Engineering, The University of Hong Kong, Hong Kong.
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12
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Shi Y, Zhang Y, Wu X, Zhang H, Yang M, Tian Z. Potential dissemination mechanism of the tetC gene in Aeromonas media from the aerobic biofilm reactor under oxytetracycline stresses. J Environ Sci (China) 2021; 105:90-99. [PMID: 34130843 DOI: 10.1016/j.jes.2020.12.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 12/31/2020] [Indexed: 06/12/2023]
Abstract
The tetC gene has been found to be one of the most widely distributed tetracycline resistance (tet) genes in various environmental niches, but the detailed dissemination mechanisms are still largely unknown. In the present study, 11 tetC-containing Aeromonas media strains were isolated from an aerobic biofilm reactor under oxytetracycline stresses, and the genome of one strain was sequenced using the PacBio RSII sequencing approach to reveal the genetic environment of tetC. The tetC gene was carried by an IS26 composite transposon, named Tn6434. The tetC-carrying Tn6434 structure was detected in all of the A. media strains either in a novel plasmid pAeme2 (n=9) or other DNA molecules (n=2) by PCR screening. The NCBI database searching result shows that this structure was also present in the plasmids or chromosomes of other 13 genera, indicating the transferability of Tn6434. Inverse PCR and sequencing confirmed that Tn6434 can form a circular intermediate and is able to incorporate into a preexisting IS26 element, suggesting that Tn6434 might be responsible for the dissemination of tetC between different DNA molecules. This study will be helpful in uncovering the spread mechanism of tet genes in water environments.
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Affiliation(s)
- Yanhong Shi
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yu Zhang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Xiangyang Wu
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Hong Zhang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Min Yang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Zhe Tian
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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13
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Kim DW, Cha CJ. Antibiotic resistome from the One-Health perspective: understanding and controlling antimicrobial resistance transmission. Exp Mol Med 2021; 53:301-309. [PMID: 33642573 PMCID: PMC8080597 DOI: 10.1038/s12276-021-00569-z] [Citation(s) in RCA: 101] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/17/2020] [Accepted: 12/21/2020] [Indexed: 01/31/2023] Open
Abstract
The concept of the antibiotic resistome was introduced just over a decade ago, and since then, active resistome studies have been conducted. In the present study, we describe the previously established concept of the resistome, which encompasses all types of antibiotic resistance genes (ARGs), and the important findings from each One-Health sector considering this concept, thereby emphasizing the significance of the One-Health approach in understanding ARG transmission. Cutting-edge research methodologies are essential for deciphering the complex resistome structure in the microbiomes of humans, animals, and the environment. Based on the recent achievements of resistome studies in multiple One-Health sectors, future directions for resistome research have been suggested to improve the understanding and control of ARG transmission: (1) ranking the critical ARGs and their hosts; (2) understanding ARG transmission at the interfaces of One-Health sectors; (3) identifying selective pressures affecting the emergence, transmission, and evolution of ARGs; and (4) elucidating the mechanisms that allow an organism to overcome taxonomic barriers in ARG transmission.
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Affiliation(s)
- Dae-Wi Kim
- grid.411545.00000 0004 0470 4320Division of Life Sciences, Jeonbuk National University, Jeonju, 54896 Republic of Korea
| | - Chang-Jun Cha
- grid.254224.70000 0001 0789 9563Department of Systems Biotechnology and Center for Antibiotic Resistome, Chung-Ang University, Anseong, 17546 Republic of Korea
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Zhao R, Feng J, Huang J, Li X, Li B. Reponses of microbial community and antibiotic resistance genes to the selection pressures of ampicillin, cephalexin and chloramphenicol in activated sludge reactors. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 755:142632. [PMID: 33045611 DOI: 10.1016/j.scitotenv.2020.142632] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 09/25/2020] [Accepted: 09/25/2020] [Indexed: 06/11/2023]
Abstract
High concentrations of antibiotics can exert strong selection pressures on the microbial community and promote the emergence and dissemination of antibiotic resistance genes (ARGs). The activated sludge reactors treating ampicillin, cephalexin and chloramphenicol production wastewater were established to investigate the responses of microbial community, ARGs and mobile genetic elements (MGEs) to antibiotics. Antibiotic selection pressures significantly declined the microbial diversity and changed microbial community structures. Based on metagenomic analysis, a total of 500 ARG subtypes affiliated with 18 ARG types were identified and 63 ARGs were shared by all samples. The substantial increase of ARG abundance and the shifts of ARG profiles were significantly correlated with antibiotic types and concentrations. The evident enrichment of non-corresponding ARG types suggested the strong co-selection effects of the target antibiotics. Additionally, metagenomic analysis revealed the occurrence of 104 MGEs belonging to various types and the five dominant MGEs were tnpA, intI1, tniA, tniB and IS91. The ARG-MGE co-occurrence associations implied the potential mobility of ARGs. Network analysis also demonstrated that five ARG types (aminoglycoside, beta-lactam, chloramphenicol, multidrug and tetracycline resistance genes) tended to co-occur internally and the obvious co-occurrence patterns among different ARG types indicated the potential for resistance co-selection. Moreover, 15 bacterial genera were speculated as the hosts of diverse ARGs. This study provides a comprehensive overview of the occurrence of ARGs and MGEs and is valuable for the risk assessment and management of antibiotic resistance.
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Affiliation(s)
- Renxin Zhao
- Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China; Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Jie Feng
- Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China; Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China; State Environmental Protection Key Laboratory of Drinking Water Source Management and Technology, Shenzhen Research Academy of Environmental Sciences, Shenzhen 518001, China
| | - Jin Huang
- Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China; Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Xiaoyan Li
- Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China; Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China; Shenzhen Environmental Science and New Energy Laboratory, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen 518055, China
| | - Bing Li
- Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China; Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China.
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15
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He Y, Tian Z, Yi Q, Zhang Y, Yang M. Impact of oxytetracycline on anaerobic wastewater treatment and mitigation using enhanced hydrolysis pretreatment. WATER RESEARCH 2020; 187:116408. [PMID: 32949826 DOI: 10.1016/j.watres.2020.116408] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 09/03/2020] [Accepted: 09/06/2020] [Indexed: 06/11/2023]
Abstract
In this study, two parallel-operated up-flow anaerobic sludge bed reactors, one used to treat synthetic wastewater spiked with oxytetracycline and the other used to treat the same wastewater after enhanced hydrolysis, were used to evaluate the impact of oxytetracycline on anaerobic digestion and resistance development and the efficacy of enhanced hydrolysis pretreatment on the elimination of adverse effects. The reactors were operated under a constant organic-loading rate (10 g/L/d) with increasing oxytetracycline doses (0 mg/L to 200 mg/L) over a period of 15 months. For the reactor without pretreatment, the chemical oxygen demand removal reached up to 89.5%%at oxytetracycline doses ranging from 0 mg/L to 100 mg/L, which collapsed at higher oxytetracycline doses. Miseq sequencing showed that a diverse hydrolysis/fermentation/acetogenesis bacterial community was maintained as the oxytetracycline dose was increased from 0 mg/L to 100 mg/L, while extreme dominance of Macellibacteroides (65.70%%- 71.56%) was found to occur at higher oxytetracycline doses. The total abundance of antibiotic resistance genes increased from 1.3 × 10-1 copies per cell to 2.6 × 10-1 copies per cell with increasing oxytetracycline dose from 0 mg/L to 5 mg/L, remained unchanged at oxytetracycline doses ranging from 25 mg/L to 100 mg/L, and then increased to 4.8 × 10-1 copies per cell and 1.3 copies per cell at oxytetracycline doses of 150 mg/L and 200 mg/L, respectively. Multidrug resistance developed in response to oxytetracycline treatment at 200 mg/L. Poor chemical oxygen demand removal and a marked enrichment in antibiotic resistance genes was validated using a full-scale up-flow anaerobic sludge bed system fed with an influent oxytetracycline concentration of approximately 200 mg/L. For the reactor treating wastewater pretreated with enhanced hydrolysis (85 °C for 6 h), the chemical oxygen demand removal rate and antibiotic resistance genes level over the whole oxytetracycline dose range were found to be similar to those achieved with zero oxytetracycline treatment. These results demonstrated that the control of conventional pollutants and ARGs could be achieved simultaneously in the UASB reactor by employing enhanced hydrolysis pretreatment.
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Affiliation(s)
- Yupeng He
- State Key Laboratory of Environmental Aquatic Chemistry,Research Center for Eco-Environmental Sciences, Chinese Academy of Science, Post Office Box 2871, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhe Tian
- State Key Laboratory of Environmental Aquatic Chemistry,Research Center for Eco-Environmental Sciences, Chinese Academy of Science, Post Office Box 2871, Beijing 100085, China; National Engineering Laboratory for Industrial Wastewater Treatment, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Qizhen Yi
- State Key Laboratory of Environmental Aquatic Chemistry,Research Center for Eco-Environmental Sciences, Chinese Academy of Science, Post Office Box 2871, Beijing 100085, China; National Engineering Laboratory for Industrial Wastewater Treatment, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yu Zhang
- State Key Laboratory of Environmental Aquatic Chemistry,Research Center for Eco-Environmental Sciences, Chinese Academy of Science, Post Office Box 2871, Beijing 100085, China; National Engineering Laboratory for Industrial Wastewater Treatment, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Min Yang
- State Key Laboratory of Environmental Aquatic Chemistry,Research Center for Eco-Environmental Sciences, Chinese Academy of Science, Post Office Box 2871, Beijing 100085, China; National Engineering Laboratory for Industrial Wastewater Treatment, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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