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Xiong F, Hu H, Xue X, Wu M, Zhou J, Zhang W, Li R. Sandwich-structured continuous ZIF-8/Ti 3C 2 MXene/ZIF-8 for efficient sterilization: Enhanced photocatalytic activity, photothermal effect, and environmental safety. WATER RESEARCH 2024; 259:121888. [PMID: 38870890 DOI: 10.1016/j.watres.2024.121888] [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: 02/22/2024] [Revised: 05/28/2024] [Accepted: 06/03/2024] [Indexed: 06/15/2024]
Abstract
The development of effective water purification systems is crucial for controlling and remediating environmental pollution, especially in terms of sterilization. Herein, we demonstrate elaborately designed composite nanosheets with a sandwich structure, composed of two-dimensional (2D) Ti3C2 MXene nanosheet core and conformal ZIF-8 ultrathin outer layers, and their potential applications in photocatalytic sterilization. The study results indicate that the conformal ZIF-8-MXene nanosheet exhibits an expanded light absorption range (826 nm), improved photothermal conversion efficiency (6.2 °C s-1), and photocurrent response, thus boosting photocatalytic sterilization efficiency (6.63 log10 CFU mL-1) against Escherichia coli under simulated sunlight within 90 min. Interestingly, 2D ZIF-8 layers exhibit positive zeta potential (19 mV), good hydrophilicity (40.6°), and local photogenerated-hole accumulation, possessing efficient bacteria-trapping efficiency. Membrane filters fabricated from optimized composite nanosheets exhibit an outstanding bacteria-trapping and sterilization efficiency (almost 100 %) against Escherichia coli under simulated sunlight within 30 min of the flow photocatalytic experiments. This work not only presents a rational structural design of the conformal and ultrathin anchoring of ZIF-8 onto a 2D conductive material for bacteria-trapping and sterilization, but also opens new opportunities for using metal-organic frameworks in photocatalytic disinfection of drinking water.
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Affiliation(s)
- Furong Xiong
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Huilin Hu
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Xiang Xue
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Minqi Wu
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jiajie Zhou
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Wang Zhang
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Rui Li
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China.
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2
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Reyneke B, Havenga B, Waso-Reyneke M, Khan S, Khan W. Benefits and Challenges of Applying Bacteriophage Biocontrol in the Consumer Water Cycle. Microorganisms 2024; 12:1163. [PMID: 38930545 PMCID: PMC11205630 DOI: 10.3390/microorganisms12061163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 05/31/2024] [Accepted: 06/05/2024] [Indexed: 06/28/2024] Open
Abstract
Bacteria (including disinfection- and antibiotic-resistant bacteria) are abundant in the consumer water cycle, where they may cause disease, and lead to biofouling and infrastructure damage in distributions systems, subsequently resulting in significant economic losses. Bacteriophages and their associated enzymes may then offer a biological control solution for application within the water sector. Lytic bacteriophages are of particular interest as biocontrol agents as their narrow host range can be exploited for the targeted removal of specific bacteria in a designated environment. Bacteriophages can also be used to improve processes such as wastewater treatment, while bacteriophage-derived enzymes can be applied to combat biofouling based on their effectiveness against preformed biofilms. However, the host range, environmental stability, bacteriophage resistance and biosafety risks are some of the factors that need to be considered prior to the large-scale application of these bacterial viruses. Characteristics of bacteriophages that highlight their potential as biocontrol agents are thus outlined in this review, as well as the potential application of bacteriophage biocontrol throughout the consumer water cycle. Additionally, the limitations of bacteriophage biocontrol and corresponding mitigation strategies are outlined, including the use of engineered bacteriophages for improved host ranges, environmental stability and the antimicrobial re-sensitisation of bacteria. Finally, the potential public and environmental risks associated with large-scale bacteriophage biocontrol application are considered, and alternative applications of bacteriophages to enhance the functioning of the consumer water cycle, including their use as water quality or treatment indicators and microbial source tracking markers, are discussed.
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Affiliation(s)
- Brandon Reyneke
- Department of Microbiology, Faculty of Science, Stellenbosch University, Private Bag X1, Stellenbosch 7602, South Africa
| | - Benjamin Havenga
- Department of Microbiology, Faculty of Science, Stellenbosch University, Private Bag X1, Stellenbosch 7602, South Africa
| | - Monique Waso-Reyneke
- Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, South Africa
| | - Sehaam Khan
- Faculty of Health Sciences, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, South Africa
| | - Wesaal Khan
- Department of Microbiology, Faculty of Science, Stellenbosch University, Private Bag X1, Stellenbosch 7602, South Africa
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Thibodeau AJ, Barret M, Mouchet F, Nguyen VX, Pinelli E. The potential contribution of aquatic wildlife to antibiotic resistance dissemination in freshwater ecosystems: A review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 350:123894. [PMID: 38599270 DOI: 10.1016/j.envpol.2024.123894] [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: 09/10/2023] [Revised: 03/26/2024] [Accepted: 03/27/2024] [Indexed: 04/12/2024]
Abstract
Antibiotic resistance (AR) is one of the major health threats of our time. The presence of antibiotics in the environment and their continuous release from sewage treatment plants, chemical manufacturing plants and animal husbandry, agriculture and aquaculture, result in constant selection pressure on microbial organisms. This presence leads to the emergence, mobilization, horizontal gene transfer and a selection of antibiotic resistance genes, resistant bacteria and mobile genetic elements. Under these circumstances, aquatic wildlife is impacted in all compartments, including freshwater organisms with partially impermeable microbiota. In this narrative review, recent advancements in terms of occurrence of antibiotics and antibiotic resistance genes in sewage treatment plant effluents source compared to freshwater have been examined, occurrence of antibiotic resistance in wildlife, as well as experiments on antibiotic exposure. Based on this current state of knowledge, we propose the hypothesis that freshwater aquatic wildlife may play a crucial role in the dissemination of antibiotic resistance within the environment. Specifically, we suggest that organisms with high bacterial density tissues, which are partially isolated from the external environment, such as fishes and amphibians, could potentially be reservoirs and amplifiers of antibiotic resistance in the environment, potentially favoring the increase of the abundance of antibiotic resistance genes and resistant bacteria. Potential avenues for further research (trophic transfer, innovative exposure experiment) and action (biodiversity eco-engineering) are finally proposed.
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Affiliation(s)
- Alexandre J Thibodeau
- CRBE, Centre de Recherche sur la Biodiversité et l'Environnement, UMR5300, 31326 Auzeville-Tolosane, Av. de l'Agrobiopole, France.
| | - Maialen Barret
- CRBE, Centre de Recherche sur la Biodiversité et l'Environnement, UMR5300, 31326 Auzeville-Tolosane, Av. de l'Agrobiopole, France
| | - Florence Mouchet
- CRBE, Centre de Recherche sur la Biodiversité et l'Environnement, UMR5300, 31326 Auzeville-Tolosane, Av. de l'Agrobiopole, France
| | - Van Xuan Nguyen
- CRBE, Centre de Recherche sur la Biodiversité et l'Environnement, UMR5300, 31326 Auzeville-Tolosane, Av. de l'Agrobiopole, France
| | - Eric Pinelli
- CRBE, Centre de Recherche sur la Biodiversité et l'Environnement, UMR5300, 31326 Auzeville-Tolosane, Av. de l'Agrobiopole, France
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4
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Chen H, Ng C, Tran NH, Haller L, Goh SG, Charles FR, Wu Z, Lim JX, Gin KYH. Removal efficiency of antibiotic residues, antibiotic resistant bacteria, and genes across parallel secondary settling tank and membrane bioreactor treatment trains in a water reclamation plant. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 924:171723. [PMID: 38492595 DOI: 10.1016/j.scitotenv.2024.171723] [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: 12/07/2023] [Revised: 02/07/2024] [Accepted: 03/12/2024] [Indexed: 03/18/2024]
Abstract
Antimicrobial resistance is recognized as a potent threat to human health. Wastewater treatment facilities are viewed as hotspots for the spread of antimicrobial resistance. This study provides comprehensive data on the occurrences of 3 different antibiotic resistant opportunistic pathogens (with resistance to up to 5 antibiotics), 13 antibiotic resistant genes and intI1, and 22 different antimicrobial residues in a large water reclamation plant (176 million gallons per day) that runs a conventional Modified Ludzack-Ettinger (MLE) reactor followed by a secondary settling tank (SST) and membrane bioreactor (MBR) in parallel. All the antibiotic resistant bacteria and most of the antibiotic resistance genes were present in the raw influent, ranging from 2.5 × 102-3.7 × 106 CFU/mL and 1.2× 10-1-6.5 × 1010 GCN/mL, respectively. MBR outperformed the SST system in terms of ARB removal as the ARB targets were largely undetected in MBR effluent, with log removals ranging from 2.7 to 6.8, while SST only had log removals ranging from 0.27 to 4.6. Most of the ARG concentrations were found to have significantly higher in SST effluent than MBR permeate, and MBR had significantly higher removal efficiency for most targets (p < 0.05) except for sul1, sul2, blaOXA48, intI1 and 16S rRNA genes (p > 0.05). As for the antibiotic residues (AR), there was no significant removal from the start to the end of the treatment process, although MBR had higher removal efficiencies for azithromycin, chloramphenicol, erythromycin, erythromycin-H2O, lincomycin, sulfamethoxazole and triclosan, compared to the SST system. In conclusion, MBR outperformed SST in terms of ARB and ARGs removal. However low removal efficiencies of most AR targets were apparent.
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Affiliation(s)
- Hongjie Chen
- Antimicrobial Resistance Interdisciplinary Research Group, Singapore-MIT Alliance for Research and Technology, 1 Create Way, Singapore 138602, Singapore
| | - Charmaine Ng
- NUS Environmental Research Institute (NERI), National University of Singapore, T-Lab Building (#02-01), 5A Engineering Drive 1, Singapore 117411, Singapore
| | - Ngoc Han Tran
- NUS Environmental Research Institute (NERI), National University of Singapore, T-Lab Building (#02-01), 5A Engineering Drive 1, Singapore 117411, Singapore
| | - Laurence Haller
- NUS Environmental Research Institute (NERI), National University of Singapore, T-Lab Building (#02-01), 5A Engineering Drive 1, Singapore 117411, Singapore
| | - Shin Giek Goh
- NUS Environmental Research Institute (NERI), National University of Singapore, T-Lab Building (#02-01), 5A Engineering Drive 1, Singapore 117411, Singapore
| | - Francis Rathinam Charles
- NUS Environmental Research Institute (NERI), National University of Singapore, T-Lab Building (#02-01), 5A Engineering Drive 1, Singapore 117411, Singapore
| | - Zhixin Wu
- NUS Environmental Research Institute (NERI), National University of Singapore, T-Lab Building (#02-01), 5A Engineering Drive 1, Singapore 117411, Singapore
| | - Jit Xin Lim
- NUS Environmental Research Institute (NERI), National University of Singapore, T-Lab Building (#02-01), 5A Engineering Drive 1, Singapore 117411, Singapore
| | - Karina Yew-Hoong Gin
- NUS Environmental Research Institute (NERI), National University of Singapore, T-Lab Building (#02-01), 5A Engineering Drive 1, Singapore 117411, Singapore; Department of Civil & Environmental Engineering, National University of Singapore, Block E1A-07-03, 1 Engineering Drive 2, 117576, Singapore.
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5
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Wang Y, Zhang Z, Kang J, Chen B, Hong W, Lv B, Wang T, Qian H. Phages in different habitats and their ability to carry antibiotic resistance genes. JOURNAL OF HAZARDOUS MATERIALS 2024; 469:133941. [PMID: 38447371 DOI: 10.1016/j.jhazmat.2024.133941] [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: 07/26/2023] [Revised: 02/19/2024] [Accepted: 02/29/2024] [Indexed: 03/08/2024]
Abstract
As the most abundant organisms on Earth, phages play a key role in the evolution of bacterial antibiotic resistance. Although previous studies have demonstrated the molecular mechanisms of horizontal gene transfer mediated by mobile genetic elements, our understanding of the intertwined relationships between antibiotic resistance genes (ARGs) and phages is limited. In this study, we analysed 2781 metagenomic samples to reveal the composition and species interactions of phage communities in different habitats as well as their capacity to carry ARGs with health risks. The composition of phage communities varies in different habitats and mainly depends on environmental conditions. Terrestrial habitats display more complex and robust interactions between phages than aquatic and human-associated habitats, resulting in the highest biodiversity of phages. Several types of phages in certain taxa (4.95-7.67%, mainly belonging to Caudoviricetes) have the capacity to carry specific ARGs and display a high potential risk to human health, especially in human-associated habitats. Overall, our results provide insights into the assembly mechanisms of phage communities and their effects on the dissemination of antibiotic resistance.
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Affiliation(s)
- Yan Wang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Zhenyan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Jian Kang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China; College of Ecology and Environment, Anhui Normal University, Wuhu 241002, PR China
| | - Bingfeng Chen
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Wenjie Hong
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou 310012, PR China
| | - Binghai Lv
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Tingzhang Wang
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou 310012, PR China.
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China.
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La Manna P, De Carluccio M, Oliva G, Vigliotta G, Rizzo L. Urban wastewater disinfection by iron chelates mediated solar photo-Fenton: Effects on seven pathogens and antibiotic resistance transfer potential. WATER RESEARCH 2024; 249:120966. [PMID: 38070340 DOI: 10.1016/j.watres.2023.120966] [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: 08/19/2023] [Revised: 10/25/2023] [Accepted: 12/01/2023] [Indexed: 01/03/2024]
Abstract
The effects of solar photo-Fenton (SPF) process mediated by the iron chelate Fe3+ imminodisuccinic acid (Fe:IDS) on both the inactivation of seven relevant pathogens and the potential for antibiotic resistance transfer (degradation of antibiotic resistance genes (ARGs) and after treatment regrowth), in real secondary treated urban wastewater, were investigated for the first time. A comparison with results obtained by sunlight/H2O2 process and Fe3+ ethylenediaminedisuccinic acid (Fe:EDDS) SPF was also carried out. ARGs were quantified by polymerase chain reaction (PCR) in samples before and after (3 h) the treatment. The persistence of the selected pathogens and ARGs was also evaluated in regrowth tests (72 h) under environmentally mimicking conditions. Fe:IDS SPF resulted to be more effective (from 1.4 log removal for Staphylococcus spp. to 4.3 log removal for Escherichia coli) than Fe:EDDS SPF (from 0.8 log removal for Pseudomonas aeruginosa to 2.0 log removal for Total coliphages) and sunlight/H2O2 (from 1.2 log removal for Clostridium perfringens to 3.3 log removal for E. coli) processes for the seven pathogens investigated. Potential pathogens regrowth was also severely affected, as no substantial regrowth was observed, both in presence and absence of catalase. A similar trend was observed for ARGs removal too (until 0.001 fold change expression for qnrS after 3 h). However, a poor effect and a slight increase in fold change was observed after treatment especially for gyrA, mefA and intl1. Overall, the effect of the investigated processes on ARGs was found to be ARG dependent. Noteworthy, coliphages can regrow after sunlight/H2O2 treatment unlike SPF processes, increasing the risk of antibiotic resistance transfer by transduction mechanism. In conclusion, Fe:IDS SPF is an attractive solution for tertiary treatment of urban wastewater in small wastewater treatment plants as it can provide effective disinfection and a higher protection against antibiotic resistance transfer than the other investigated processes.
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Affiliation(s)
- Pellegrino La Manna
- Water Science and Technology group (WaSTe), Department of Civil Engineering, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, SA, Italy
| | - Marco De Carluccio
- Water Science and Technology group (WaSTe), Department of Civil Engineering, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, SA, Italy
| | - Gianmaria Oliva
- Department of Chemistry and Biology, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, SA, Italy
| | - Giovanni Vigliotta
- Department of Chemistry and Biology, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, SA, Italy
| | - Luigi Rizzo
- Water Science and Technology group (WaSTe), Department of Civil Engineering, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, SA, Italy.
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7
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Fatimazahra S, Latifa M, Laila S, Monsif K. Review of hospital effluents: special emphasis on characterization, impact, and treatment of pollutants and antibiotic resistance. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:393. [PMID: 36780024 PMCID: PMC9923651 DOI: 10.1007/s10661-023-11002-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
Health care institutions generate large volumes of liquid effluents from specific activities related to healthcare, analysis, and research. Their direct discharge into the environment has various negative effects on aquatic environments and human health, due to their high organic matter charges and the presence of various emerging contaminants such as disinfectants, drugs, bacteria, viruses, and parasites. Moreover, hospital effluents, by carrying antibiotics, contribute to the development of antibiotic-resistant microorganisms in the environment. This resistance has become a global issue that manifests itself variously in different countries, causing the transmission of different infections. In this respect, an effort is provided to protect water resources by current treatment methods that imply physical-chemical processes such as adsorption and advanced oxidation processes, biological processes such as activated sludge and membrane bioreactors and other hybrid techniques. The purpose of this review is to improve the knowledge on the composition and impact of hospital wastewater on man and the environment, highlighting the different treatment techniques appropriate to this type of disposal before discharge into the environment.
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Affiliation(s)
- Sayerh Fatimazahra
- Process Engineering and Environment Laboratory, Faculty of Science and Technology of Mohammedia, Hassan II University, Casablanca, Morocco
| | - Mouhir Latifa
- Process Engineering and Environment Laboratory, Faculty of Science and Technology of Mohammedia, Hassan II University, Casablanca, Morocco
| | - Saafadi Laila
- Process Engineering and Environment Laboratory, Faculty of Science and Technology of Mohammedia, Hassan II University, Casablanca, Morocco
| | - Khazraji Monsif
- Process Engineering and Environment Laboratory, Faculty of Science and Technology of Mohammedia, Hassan II University, Casablanca, Morocco
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8
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Wu RA, Feng J, Yue M, Liu D, Ding T. Overuse of food-grade disinfectants threatens a global spread of antimicrobial-resistant bacteria. Crit Rev Food Sci Nutr 2023; 64:6870-6879. [PMID: 36756870 DOI: 10.1080/10408398.2023.2176814] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Food-grade disinfectants are extensively used for microbial decontamination of food processing equipment. In recent years, food-grade disinfectants have been increasingly used. However, the overuse of disinfectants causes another major issue, which is the emergence and spread of antimicrobial-resistant bacteria on a global scale. As the ongoing pandemic takes global attention, bacterial infections with antibiotic resistance are another ongoing pandemic that often goes unnoticed and will be the next real threat to humankind. Here, the effects of food-grade disinfectant overuse on the global emergence and spread of antimicrobial-resistant bacteria were reviewed. It was found that longtime exposure to the most common food-grade disinfectants promoted resistance to clinically important antibiotics in pathogenic bacteria, namely cross-resistance. Currently, the use of disinfectants is largely unregulated. The mechanisms of cross-resistance are regulated by intrinsic molecular mechanisms including efflux pumps, DNA repair system, modification of the molecular target, and metabolic adaptation. Cross-resistance can also be acquired by mobile genetic elements. Long-term exposure to disinfectants has an impact on the dissemination of antimicrobial resistance in soil, plants, animals, water, and human gut environments.
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Affiliation(s)
- Ricardo A Wu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
| | - Jinsong Feng
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
| | - Min Yue
- College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Donghong Liu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
- Ningbo Research Institute, Zhejiang University, Ningbo, China
| | - Tian Ding
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
- Ningbo Research Institute, Zhejiang University, Ningbo, China
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9
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Liu Z, Gao W, Liu L, Luo S, Zhang C, Yue T, Sun J, Zhu M, Wang J. Work function mediated interface charge kinetics for boosting photocatalytic water sterilization. JOURNAL OF HAZARDOUS MATERIALS 2023; 442:130036. [PMID: 36155302 DOI: 10.1016/j.jhazmat.2022.130036] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 08/22/2022] [Accepted: 09/18/2022] [Indexed: 06/16/2023]
Abstract
Photocatalytic sterilization is an eco-friendly strategy to utilize solar energy for treating water contaminated with resistant bacteria. Here, we propose interface engineering to induce an internal electric field (IEF) in leaf-like Ti3C2Tx/TiO2 based on the work function (Φ) theory, which enhances photocatalytic sterilization performance by steering interface charge kinetics. Density functional theory (DFT) calculations and in situ irradiation X-ray photoelectron spectroscopy (ISI-XPS) results show that photogenerated charge carriers can be directionally separated by the IEF. The efficient charge kinetics benefits the reactive oxygen species (ROS) generation and hence a superior broad-spectrum sterilization performance. We employ the intrinsic physical characteristics of MXene to steer interface charge kinetics for photocatalysis, which exhibits great potential in water disinfection.
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Affiliation(s)
- Zhaoli Liu
- College of Food Science and Engineering, Northwest A&F University, 28 Xinong Road, Yangling 712100, Shaanxi, China
| | - Wenzhe Gao
- College of Food Science and Engineering, Northwest A&F University, 28 Xinong Road, Yangling 712100, Shaanxi, China
| | - Lizhi Liu
- Department of Applied Physics, University of Eastern Finland, 70210 Kuopio, Finland
| | - Shijia Luo
- College of Food Science and Engineering, Northwest A&F University, 28 Xinong Road, Yangling 712100, Shaanxi, China
| | - Cui Zhang
- College of Food Science and Engineering, Northwest A&F University, 28 Xinong Road, Yangling 712100, Shaanxi, China
| | - Tianli Yue
- College of Food Science and Engineering, Northwest A&F University, 28 Xinong Road, Yangling 712100, Shaanxi, China
| | - Jing Sun
- Qinghai Provincial Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Qinghai 810008, China
| | - MingQiang Zhu
- College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling 712100, China
| | - Jianlong Wang
- College of Food Science and Engineering, Northwest A&F University, 28 Xinong Road, Yangling 712100, Shaanxi, China.
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10
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Tang Z, Tang N, Wang X, Ren H, Zhang C, Zou L, Han L, Guo L, Liu W. Characterization of a lytic Escherichia coli phage CE1 and its potential use in therapy against avian pathogenic Escherichia coli infections. Front Microbiol 2023; 14:1091442. [PMID: 36876110 PMCID: PMC9978775 DOI: 10.3389/fmicb.2023.1091442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 01/26/2023] [Indexed: 02/18/2023] Open
Abstract
The high incidence of Avian pathogenic Escherichia coli (APEC) in poultry has resulted in significant economic losses. It has become necessary to find alternatives to antibiotics due to the alarming rise in antibiotic resistance. Phage therapy has shown promising results in numerous studies. In the current study, a lytic phage vB_EcoM_CE1 (short for CE1) against Escherichia coli (E. coli) was isolated from broiler feces, showing a relatively wide host range and lysing 56.9% (33/58) of high pathogenic strains of APEC. According to morphological observations and phylogenetic analysis, phage CE1 belongs to the Tequatrovirus genus, Straboviridae family, containing an icosahedral capsid (80 ~ 100 nm in diameter) and a retractable tail (120 nm in length). This phage was stable below 60°C for 1 h over the pH range of 4 to 10. Whole-genome sequencing revealed that phage CE1 contained a linear double-stranded DNA genome spanning 167,955 bp with a GC content of 35.4%. A total of 271 ORFs and 8 tRNAs were identified. There was no evidence of virulence genes, drug-resistance genes, or lysogeny genes in the genome. The in vitro test showed high bactericidal activity of phage CE1 against E. coli at a wide range of MOIs, and good air and water disinfectant properties. Phage CE1 showed perfect protection against broilers challenged with APEC strain in vivo. This study provides some basic information for further research into treating colibacillosis, or killing E. coli in breeding environments.
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Affiliation(s)
- Zhaohui Tang
- College of Veterinary medicine, Qingdao Agricultural University, Qingdao, Shandong, China
| | - Ning Tang
- College of Veterinary medicine, Qingdao Agricultural University, Qingdao, Shandong, China
| | - Xinwei Wang
- College of Veterinary medicine, Qingdao Agricultural University, Qingdao, Shandong, China
| | - Huiying Ren
- College of Veterinary medicine, Qingdao Agricultural University, Qingdao, Shandong, China
| | - Can Zhang
- College of Veterinary medicine, Qingdao Agricultural University, Qingdao, Shandong, China
| | - Ling Zou
- College of Veterinary medicine, Qingdao Agricultural University, Qingdao, Shandong, China
| | - Lei Han
- College of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao, Shandong, China
| | - Longzong Guo
- Shandong Yisheng Livestock & Poultry Breeding Co., Ltd., Yantai, Shandong, China
| | - Wenhua Liu
- College of Veterinary medicine, Qingdao Agricultural University, Qingdao, Shandong, China
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11
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Arun J, Nachiappan S, Rangarajan G, Alagappan RP, Gopinath KP, Lichtfouse E. Synthesis and application of titanium dioxide photocatalysis for energy, decontamination and viral disinfection: a review. ENVIRONMENTAL CHEMISTRY LETTERS 2023; 21:339-362. [PMID: 36060494 PMCID: PMC9419126 DOI: 10.1007/s10311-022-01503-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 08/05/2022] [Indexed: 05/04/2023]
Abstract
Global pollution is calling for advanced methods to remove contaminants from water and wastewater, such as TiO2-assisted photocatalysis. The environmental applications of titanium dioxide have started after the initial TiO2 application for water splitting by Fujishima and Honda in 1972. TiO2 is now used for self-cleaning surfaces, air and water purification systems, microbial inactivation and selective organic conversion. The synthesis of titanium dioxide nanomaterials with high photocatalytic activity is actually a major challenge. Here we review titanium dioxide photocatalysis with focus on mechanims, synthesis, and applications. Synthetic methods include sol-gel, sonochemical, microwave, oxidation, deposition, hydro/solvothermal, and biological techniques. Applications comprise the production of energy, petroleum recovery, and the removal of microplastics, pharmaceuticals, metals, dyes, pesticides, and of viruses such as the severe acute respiratory syndrome coronavirus 2.
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Affiliation(s)
- Jayaseelan Arun
- Centre for Waste Management-International Research Centre, Sathyabama Institute of Science and Technology, Jeppiaar Nagar (OMR), Tamil Nadu, Chennai, 6030119 India
| | - S. Nachiappan
- Department of Chemical Engineering, University of Technology and Applied Sciences, Salalah, Sultanate of Oman
| | - Goutham Rangarajan
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Ontario, M5S3E5 Canada
| | - Ram Prasath Alagappan
- Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, 2601 DA Delft, The Netherlands
| | - K. P. Gopinath
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam (OMR), Tamil Nadu, Chennai, 603110 India
| | - Eric Lichtfouse
- European Centre for Research and Education in Geosciences (CEREGE), Aix Marseille University, 13007 Marseille, France
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12
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Tiwari A, Kurittu P, Al-Mustapha AI, Heljanko V, Johansson V, Thakali O, Mishra SK, Lehto KM, Lipponen A, Oikarinen S, Pitkänen T, Heikinheimo A. Wastewater surveillance of antibiotic-resistant bacterial pathogens: A systematic review. Front Microbiol 2022; 13:977106. [PMID: 36590429 PMCID: PMC9798455 DOI: 10.3389/fmicb.2022.977106] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 11/22/2022] [Indexed: 12/24/2022] Open
Abstract
Infectious diseases caused by antibiotic-resistant bacterial (ARB) pathogens are a serious threat to human and animal health. The active surveillance of ARB using an integrated one-health approach can help to reduce the emergence and spread of ARB, reduce the associated economic impact, and guide antimicrobial stewardship programs. Wastewater surveillance (WWS) of ARB provides composite samples for a total population, with easy access to the mixed community microbiome. This concept is emerging rapidly, but the clinical utility, sensitivity, and uniformity of WWS of ARB remain poorly understood especially in relation to clinical evidence in sewershed communities. Here, we systematically searched the literature to identify studies that have compared findings from WWS of ARB and antibiotic resistance genes (ARG) with clinical evidence in parallel, thereby evaluating how likely WWS of ARB and ARG can relate to the clinical cases in communities. Initially, 2,235 articles were obtained using the primary search keywords, and 1,219 articles remained after de-duplication. Among these, 35 articles fulfilled the search criteria, and an additional 13 relevant articles were included by searching references in the primary literature. Among the 48 included papers, 34 studies used a culture-based method, followed by 11 metagenomics, and three PCR-based methods. A total of 28 out of 48 included studies were conducted at the single sewershed level, eight studies involved several countries, seven studies were conducted at national or regional scales, and five at hospital levels. Our review revealed that the performance of WWS of ARB pathogens has been evaluated more frequently for Escherichia coli, Enterococcus spp., and other members of the family Enterobacteriaceae, but has not been uniformly tested for all ARB pathogens. Many wastewater-based ARB studies comparing the findings with clinical evidence were conducted to evaluate the public health risk but not to relate with clinical evidence and to evaluate the performance of WWS of ARB. Indeed, relating WWS of ARB with clinical evidence in a sewershed is not straightforward, as the source of ARB in wastewater cannot be only from symptomatic human individuals but can also be from asymptomatic carriers as well as from animal sources. Further, the varying fates of each bacterial species and ARG within the sewerage make the aim of connecting WWS of ARB with clinical evidence more complicated. Therefore, future studies evaluating the performance of many AMR pathogens and their genes for WWS one by one can make the process simpler and the interpretation of results easier.
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Affiliation(s)
- Ananda Tiwari
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland,*Correspondence: Ananda Tiwari,
| | - Paula Kurittu
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Ahmad I. Al-Mustapha
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland,Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria,Department of Veterinary Services, Kwara State Ministry of Agriculture and Rural Development, Ilorin, Nigeria
| | - Viivi Heljanko
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Venla Johansson
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
| | - Ocean Thakali
- Department of Civil Engineering, University of Ottawa, Ottawa, ON, Canada
| | - Shyam Kumar Mishra
- School of Optometry and Vision Science, University of New South Wales Sydney, Sydney, NSW, Australia
| | - Kirsi-Maarit Lehto
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Anssi Lipponen
- Expert Microbiology Unit, Department of Health Security, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Sami Oikarinen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Tarja Pitkänen
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland,Expert Microbiology Unit, Department of Health Security, Finnish Institute for Health and Welfare, Helsinki, Finland
| | | | - Annamari Heikinheimo
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland,Finnish Food Authority, Seinäjoki, Finland
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13
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Su H, Wu C, Han P, Liu Z, Liang M, Zhang Z, Wang Z, Guo G, He X, Pang J, Wang C, Weng S, He J. The microbiome and its association with antibiotic resistance genes in the hadal biosphere at the Yap Trench. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129543. [PMID: 35870206 DOI: 10.1016/j.jhazmat.2022.129543] [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: 04/27/2022] [Revised: 07/02/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
The hadal biosphere, the deepest part of the ocean, is known as the least-explored aquatic environment and hosts taxonomically diverse microbial communities. However, the microbiome and its association with antibiotic resistance genes (ARGs) in the hadal ecosystem remain unknown. Here, we profiled the microbiome diversity and ARG occurrence in seawater and sediments of the Yap Trench (YT) using metagenomic sequencing. Within the prokaryote (bacteria and archaea) lineages, the main components of bacteria were Gammaproteobacteria (77.76 %), Firmicutes (8.36 %), and Alphaproteobacteria (2.25 %), whereas the major components of archaea were Nitrososphaeria (6.51 %), Nanoarchaeia (0.42 %), and Thermoplasmata (0.25 %), respectively. Taxonomy of viral contigs showed that the classified viral communities in YT seawater and sediments were dominated by Podoviridae (45.96 %), Siphoviridae (29.41 %), and Myoviridae (24.63 %). A large majority of viral contigs remained uncharacterized and exhibited endemicity. A total of 48 ARGs encoding resistance to 12 antibiotic classes were identified and their hosts were bacteria and viruses. Novel ARG subtypes mexFYTV-1, mexFYTV-2, mexFYTV-3, vanRYTV-1, vanSYTV-1 (carried by unclassified viruses), and bacAYTB-1 (carried by phylum Firmicutes) were detected in seawater samples. Overall, our findings imply that the hadal environment of the YT is a repository of viral and ARG diversity.
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Affiliation(s)
- Hualong Su
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, Zhuhai 519000, China
| | - Chengcheng Wu
- State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Peiyun Han
- State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Zixuan Liu
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, Zhuhai 519000, China
| | - Mincong Liang
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, Zhuhai 519000, China
| | - Zheng Zhang
- Baidu International Technology (Shenzhen), Shenzhen 518062, China
| | - Zhike Wang
- Hainan Guodun Information Development, Haikou 570206, China
| | - Guangyu Guo
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, Zhuhai 519000, China
| | - Xinyi He
- State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Jianhu Pang
- State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Cheng Wang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Shaoping Weng
- State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Jianguo He
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Marine Sciences, Sun Yat-sen University, Zhuhai 519000, China; State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China.
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14
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Li W, Zhang G. Detection and various environmental factors of antibiotic resistance gene horizontal transfer. ENVIRONMENTAL RESEARCH 2022; 212:113267. [PMID: 35413299 DOI: 10.1016/j.envres.2022.113267] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 04/05/2022] [Accepted: 04/05/2022] [Indexed: 05/25/2023]
Abstract
Bacterial antibiotic resistance in water environments is becoming increasingly severe, and new antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) have also attracted the attention of researchers. The horizontal transfer of ARGs in water environments is considered one of the main sources of bacterial resistance in the natural environment. Horizontal gene transfer (HGT) mainly includes conjugation, natural transformation, and transduction, and conjugation has been investigated most. Several studies have shown that there are a large number of environmental factors that might affect the horizontal transfer of ARGs in water environments, such as nanomaterials, various oxidants, and light; however, there is still a lack of systematic and comprehensive reviews on the detection and the effects of the influence factors of on ARG horizontal transfer. Therefore, this study introduced three HGT modes, analysed the advantages and disadvantages of current methods for monitoring HGT, and then summarized the influence and mechanism of various factors on ARG horizontal transfer, and the possible reasons for the different effects caused by similar factors were mainly critically discussed. Finally, existing research deficiencies and future research directions of ARG horizontal transfer in water environments were discussed.
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Affiliation(s)
- Weiying Li
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, 200092, Shanghai, China.
| | - Guosheng Zhang
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, 200092, Shanghai, China
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15
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Zhang Y, Guo Y, Qiu T, Gao M, Wang X. Bacteriophages: Underestimated vehicles of antibiotic resistance genes in the soil. Front Microbiol 2022; 13:936267. [PMID: 35992716 PMCID: PMC9386270 DOI: 10.3389/fmicb.2022.936267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 07/04/2022] [Indexed: 11/17/2022] Open
Abstract
Bacteriophages (phages), the most abundant biological entities on Earth, have a significant effect on the composition and dynamics of microbial communities, biogeochemical cycles of global ecosystems, and bacterial evolution. A variety of antibiotic resistance genes (ARGs) have been identified in phage genomes in different soil samples. Phages can mediate the transfer of ARGs between bacteria via transduction. Recent studies have suggested that anthropogenic activities promote phage-mediated horizontal gene transfer events. Therefore, the role of phages in the dissemination of ARGs, which are a potential threat to human health, may be underestimated. However, the contribution of phages to the transfer of ARGs is still poorly understood. Considering the growing and wide concerns of antibiotic resistance, phages should be considered a research focus in the mobile resistome. This review aimed to provide an overview of phages as vehicles of ARGs in soil. Here, we summarized the current knowledge on the diversity and abundance of ARGs in soilborne phages and analyzed the contribution of phages to the horizontal transfer of ARGs. Finally, research deficiencies and future perspectives were discussed. This study provides a reference for preventing and controlling ARG pollution in agricultural systems.
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16
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Singh S, Pitchers R, Hassard F. Coliphages as viral indicators of sanitary significance for drinking water. Front Microbiol 2022; 13:941532. [PMID: 35958148 PMCID: PMC9362991 DOI: 10.3389/fmicb.2022.941532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 06/30/2022] [Indexed: 11/13/2022] Open
Abstract
Coliphages are virus that infect coliform bacteria and are used in aquatic systems for risk assessment for human enteric viruses. This mini-review appraises the types and sources of coliphage and their fate and behavior in source waters and engineered drinking water treatment systems. Somatic (cell wall infection) and F+ (male specific) coliphages are abundant in drinking water sources and are used as indicators of fecal contamination. Coliphage abundances do not consistently correlate to human enteric virus abundance, but they suitably reflect the risks of exposure to human enteric viruses. Coliphages have highly variable surface characteristics with respect to morphology, size, charge, isoelectric point, and hydrophobicity which together interact to govern partitioning and removal characteristics during water treatment. The groups somatic and F+ coliphages are valuable for investigating the virus elimination during water treatment steps and as indicators for viral water quality assessment. Strain level analyses (e.g., Qβ or GA-like) provide more information about specific sources of viral pollution but are impractical for routine monitoring. Consistent links between rapid online monitoring tools (e.g., turbidity, particle counters, and flow cytometry) and phages in drinking water have yet to be established but are recommended as a future area of research activity. This could enable the real-time monitoring of virus and improve the process understanding during transient operational events. Exciting future prospects for the use of coliphages in aquatic microbiology are also discussed based on current scientific evidence and practical needs.
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Affiliation(s)
- Suniti Singh
- Cranfield Water Science Institute, Cranfield University, Bedford, United Kingdom
| | | | - Francis Hassard
- Cranfield Water Science Institute, Cranfield University, Bedford, United Kingdom
- Institute for Nanotechnology and Water Sustainability, University of South Africa, Johannesburg, South Africa
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17
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Sun R, Yu P, Zuo P, Alvarez PJ. Bacterial Concentrations and Water Turbulence Influence the Importance of Conjugation Versus Phage-Mediated Antibiotic Resistance Gene Transfer in Suspended Growth Systems. ACS ENVIRONMENTAL AU 2022; 2:156-165. [PMID: 37101581 PMCID: PMC10114721 DOI: 10.1021/acsenvironau.1c00027] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Despite the abundance of phage-borne antibiotic resistance genes (ARGs) in the environment, the frequency of ARG propagation via phage-mediated transduction (relative to via conjugation) is poorly understood. We investigated the influence of bacterial concentration and water turbulence level [quantified as Reynold's number (Re)] in suspended growth systems on the frequency of ARG transfer by two mechanisms: delivery by a lysogenic phage (phage λ carrying gentamycin-resistance gene, genR) and conjugation mediated by the self-transmissible plasmid RP4. Using Escherichia coli (E. coli) as the recipient, phage delivery had a comparable frequency (1.2 ± 0.9 × 10-6) to that of conjugation (1.1 ± 0.9 × 10-6) in suspensions with low cell concentration (104 CFU/mL) and moderate turbulence (Re = 5 × 104). Turbulence affected cell (or phage)-to-cell contact rates and detachment (due to shear force), and thus, it affected the relative importance of conjugation versus phage delivery. At 107 CFU/mL, no significant difference was observed between the frequencies of ARG transfer by the two mechanisms under quiescent water conditions (2.8 ± 0.3 × 10-5 for conjugation vs 2.2 ± 0.5 × 10-5 for phage delivery, p = 0.19) or when Re reached 5 × 105 (3.4 ± 1.5 × 10-5 for conjugation vs 2.9 ± 1.0 × 10-5 for phage delivery, p = 0.52). Transcriptomic analysis of genes related to conjugation and phage delivery and simulation of cell (or phage)-to-cell collisions at different Re values corroborate that the importance of phage delivery relative to conjugation increases under either quiescent or turbulent conditions. This finding challenges the prevailing view that conjugation is the dominant ARG transfer mechanism and underscores the need to consider and mitigate potential ARG dissemination via transduction.
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Affiliation(s)
- Ruonan Sun
- Department of Civil and Environmental Engineering, Rice University, Houston, Texas 77005, United States
| | - Pingfeng Yu
- Department of Civil and Environmental Engineering, Rice University, Houston, Texas 77005, United States
| | - Pengxiao Zuo
- Department of Civil and Environmental Engineering, Rice University, Houston, Texas 77005, United States
| | - Pedro J.J. Alvarez
- Department of Civil and Environmental Engineering, Rice University, Houston, Texas 77005, United States
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18
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Epelle EI, Macfarlane A, Cusack M, Burns A, Thissera B, Mackay W, Rateb ME, Yaseen M. Bacterial and fungal disinfection via ozonation in air. J Microbiol Methods 2022; 194:106431. [DOI: 10.1016/j.mimet.2022.106431] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/01/2022] [Accepted: 02/01/2022] [Indexed: 12/27/2022]
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19
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Jiang Q, Feng M, Ye C, Yu X. Effects and relevant mechanisms of non-antibiotic factors on the horizontal transfer of antibiotic resistance genes in water environments: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150568. [PMID: 34627113 DOI: 10.1016/j.scitotenv.2021.150568] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/27/2021] [Accepted: 09/20/2021] [Indexed: 05/17/2023]
Abstract
Antibiotic resistance has created obstacles in the treatment of infectious diseases with antibiotics. The horizontal transfer of antibiotic resistance genes (ARGs) can exacerbate the dissemination of antibiotic resistance in water environments. In addition to antibiotic selective pressure, multiple non-antibiotic factors can affect the horizontal transfer of ARGs. Herein, we seek to comprehensively review the effects and relevant mechanisms of non-antibiotic factors on the horizontal transfer of ARGs in water environments, especially contaminants from human activities and water treatment processes. Four pathways have been identified to accomplish horizontal gene transfer (HGT), i.e., conjugation, transformation, transduction, and vesiduction. Changes in conjugative frequencies by non-antibiotic factors are mainly related to their concentrations, which conform to hormesis. Relevant mechanisms involve the alteration in cell membrane permeability, reactive oxygen species, SOS response, pilus, and mRNA expression of relevant genes. Transformation induced by extracellular DNA may be more vulnerable to non-antibiotic factors than other pathways. Except bacteriophage infection, the effects of non-antibiotic factors on transduction exhibit many similarities with that of conjugation. Given the secretion of membrane vesicles stimulated by non-antibiotic factors, their effects on vesiduction can be inferred. Furthermore, contaminants from human activities at sub-inhibitory or environmentally relevant concentrations usually promote HGT, resulting in further dissemination of antibiotic resistance. The horizontal transfer of ARGs is difficult to be inhibited by individual water treatment processes (e.g., chlorination, UV treatment, and photocatalysis) unless they attain sufficient intensity. Accordingly, the synergistic application containing two or more water treatment processes is recommended. Overall, we believe this review can elucidate the significance for risk assessments of contaminants from human activities and provide insights into the development of environment-friendly and cost-efficient water treatment processes to inhibit the horizontal transfer of ARGs.
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Affiliation(s)
- Qi Jiang
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Mingbao Feng
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Chengsong Ye
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Xin Yu
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, China.
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20
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Maganha de Almeida Kumlien AC, González-Villalobos E, Balcázar JL. Making waves: How does the emergence of antimicrobial resistance affect policymaking? WATER RESEARCH 2021; 206:117772. [PMID: 34688095 DOI: 10.1016/j.watres.2021.117772] [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: 07/29/2021] [Revised: 10/03/2021] [Accepted: 10/11/2021] [Indexed: 06/13/2023]
Abstract
This article considers current trends in antimicrobial resistance (AMR) research and knowledge gaps relevant to policymaking in the water sector. Specifically, biological indicators of AMR (antibiotic-resistant bacteria and their resistance genes) and detection methods that have been used so far are identified and discussed, as well as the problems with and solutions to the collection of AMR data, sewage surveillance lessons from the COVID-19 pandemic, and the financial burden caused by AMR, which could be synergically used to improve advocacy on AMR issues in the water sector. Finally, this article proposes solutions to overcoming existing hurdles and shortening the time it will take to have an impact on policymaking and regulation in the sector.
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Affiliation(s)
| | - Edgar González-Villalobos
- Catalan Institute for Water Research (ICRA), 17003 Girona, Spain; University of Girona, 17004 Girona, Spain
| | - José L Balcázar
- Catalan Institute for Water Research (ICRA), 17003 Girona, Spain; University of Girona, 17004 Girona, Spain.
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21
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Sala-Comorera L, Nolan TM, Reynolds LJ, Venkatesh A, Cheung L, Martin NA, Stephens JH, Gitto A, O'Hare GMP, O'Sullivan JJ, Meijer WG. Bacterial and Bacteriophage Antibiotic Resistance in Marine Bathing Waters in Relation to Rivers and Urban Streams. Front Microbiol 2021; 12:718234. [PMID: 34381437 PMCID: PMC8350879 DOI: 10.3389/fmicb.2021.718234] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 06/28/2021] [Indexed: 12/24/2022] Open
Abstract
Fecal pollution of surface water may introduce bacteria and bacteriophages harboring antibiotic resistance genes (ARGs) into the aquatic environment. Watercourses discharging into the marine environment, especially close to designated bathing waters, may expose recreational users to fecal pollution and therefore may increase the likelihood that they will be exposed to ARGs. This study compares the bacterial and bacteriophage ARG profiles of two rivers (River Tolka and Liffey) and two small urban streams (Elm Park and Trimleston Streams) that discharge close to two marine bathing waters in Dublin Bay. Despite the potential differences in pollution pressures experienced by these waterways, microbial source tracking analysis showed that the main source of pollution in both rivers and streams in the urban environment is human contamination. All ARGs included in this study, blaTEM, blaSHV, qnrS, and sul1, were present in all four waterways in both the bacterial and bacteriophage fractions, displaying a similar ARG profile. We show that nearshore marine bathing waters are strongly influenced by urban rivers and streams discharging into these, since they shared a similar ARG profile. In comparison to rivers and streams, the levels of bacterial ARGs were significantly reduced in the marine environment. In contrast, the bacteriophage ARG levels in freshwater and the marine were not significantly different. Nearshore marine bathing waters could therefore be a potential reservoir of bacteriophages carrying ARGs. In addition to being considered potential additional fecal indicators organism, bacteriophages may also be viewed as indicators of the spread of antimicrobial resistance.
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Affiliation(s)
- Laura Sala-Comorera
- UCD School of Biomolecular and Biomedical Science, UCD Earth Institute, UCD Conway Institute, University College Dublin, Dublin, Ireland
| | - Tristan M Nolan
- UCD School of Biomolecular and Biomedical Science, UCD Earth Institute, UCD Conway Institute, University College Dublin, Dublin, Ireland
| | - Liam J Reynolds
- UCD School of Biomolecular and Biomedical Science, UCD Earth Institute, UCD Conway Institute, University College Dublin, Dublin, Ireland
| | - Anjan Venkatesh
- UCD School of Biomolecular and Biomedical Science, UCD Earth Institute, UCD Conway Institute, University College Dublin, Dublin, Ireland
| | - Lily Cheung
- UCD School of Biomolecular and Biomedical Science, UCD Earth Institute, UCD Conway Institute, University College Dublin, Dublin, Ireland
| | - Niamh A Martin
- UCD School of Biomolecular and Biomedical Science, UCD Earth Institute, UCD Conway Institute, University College Dublin, Dublin, Ireland
| | - Jayne H Stephens
- UCD School of Biomolecular and Biomedical Science, UCD Earth Institute, UCD Conway Institute, University College Dublin, Dublin, Ireland
| | - Aurora Gitto
- UCD School of Biomolecular and Biomedical Science, UCD Earth Institute, UCD Conway Institute, University College Dublin, Dublin, Ireland
| | - Gregory M P O'Hare
- UCD School of Computer Science, UCD Earth Institute, University College Dublin, Dublin, Ireland
| | - John J O'Sullivan
- UCD School of Civil Engineering, UCD Dooge Centre for Water Resources Research, UCD Earth Institute, University College Dublin, Dublin, Ireland
| | - Wim G Meijer
- UCD School of Biomolecular and Biomedical Science, UCD Earth Institute, UCD Conway Institute, University College Dublin, Dublin, Ireland
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22
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Non-Woven Fabrics Based on Nanocomposite Nylon 6/ZnO Obtained by Ultrasound-Assisted Extrusion for Improved Antimicrobial and Adsorption Methylene Blue Dye Properties. Polymers (Basel) 2021; 13:polym13111888. [PMID: 34204165 PMCID: PMC8201166 DOI: 10.3390/polym13111888] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 05/23/2021] [Accepted: 05/27/2021] [Indexed: 11/17/2022] Open
Abstract
Approximately 200,000 tons of water contaminated with dyes are discharged into effluents annually, which in addition to infectious diseases constitute problems that afflict the population worldwide. This study evaluated the mechanical properties, surface structure, antimicrobial performance, and methylene blue dye-contaminant adsorption using the non-woven fabrics manufactured by melt-blowing. The non-woven fabrics are composed of nylon 6 (Ny 6) and zinc oxide nanoparticles (ZnO NPs). The polymer nanocomposites were previously fabricated using variable frequency ultrasound assisted-melt-extrusion to be used in melt-blowing. Energy dispersion spectroscopy (SEM-EDS) images showed a homogeneous dispersion of the ZnO nanoparticles in nylon 6. The mechanical properties of the composites increased by adding ZnO compared to the nylon 6 matrix, and sample Ny/ZnO 0.5 showed the best mechanical performance. All fabric samples exhibited antimicrobial activity against S. aureus and fungus C. albicans, and the incorporation of ZnO nanoparticles significantly improved this property compared to pure nylon 6. The absorption efficiency of methylene blue (MB), during 60 min, for the samples Ny/ZnO 0.05 and Ny/ZnO 0.25 wt%, were 93% and 65%, respectively. The adsorption equilibrium data obeyed the Langmuir isotherm.
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