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Liu H, Shi K, Wang Y, Zhong W, Pan S, Zhou L, Cheng Y, Yuan Y, Zhou Z, Liu H, Zhang S, Peng G, Yan Q, Luo Y, Zhang X, Zhong Z. Characterization of antibiotic resistance genes and mobile genetic elements in Escherichia coli isolated from captive black bears. Sci Rep 2024; 14:2745. [PMID: 38302507 PMCID: PMC10834548 DOI: 10.1038/s41598-024-52622-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 01/22/2024] [Indexed: 02/03/2024] Open
Abstract
The objective of this study was to analyze the antimicrobial resistance (AMR) characteristics produced by antibiotic resistance genes (ARGs), mobile genetic elements (MGEs) and gene cassettes in Escherichia coli isolated from the feces of captive black bears. Antimicrobial susceptibility testing was performed by using the disk diffusion method, and both MGEs and integron gene cassettes were detected by polymerase chain reaction. Our results showed that 43.7% (62/142) of the isolates were multidrug resistant strains and 97.9% (139/142) of the isolates were resistant to at least one antibiotic. The highest AMR phenotype was observed for tetracycline (79.6%, 113/142), followed by ampicillin (50.0%, 71/142), trimethoprim-sulfamethoxazole (43.7%, 62/142) and cefotaxime (35.9%, 51/142). However, all isolates were susceptible to tobramycin. tetA had the highest occurrence in 6 ARGs in 142 E. coli isolates (76.8%, 109/142). Ten mobile genetic elements were observed and IS26 was dominant (88.0%, 125/142). ISECP1 was positively associated with five β-lactam antibiotics. ISCR3/14, IS1133 and intI3 were not detected. Seventy-five E. coli isolates (65 intI1-positive isolates, 2 intI2-positive isolates and 8 intI1 + intI2-positive isolates) carried integrons. Five gene cassettes (dfrA1, aadA2, dfrA17-aadA5, aadA2-dfrA12 and dfrA1-aadA1) were identified in the intI1-positive isolates and 2 gene cassettes (dfrA1-catB2-sat2-aadA1 and dfrA1-catB2-sat1-aadA1) were observed in the intI2-positive isolates. Monitoring of ARGs, MGEs and gene cassettes is important to understand the prevalence of AMR, which may help to introduce measures to prevent and control of AMR in E. coli for captive black bears.
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Affiliation(s)
- Hang Liu
- College of Veterinary Medicine, Key Laboratory of Animal Disease and Human Health of Sichuan, Sichuan Agricultural University, Chengdu, 611130, China
| | - Keyun Shi
- Jiangsu Yixing People's Hospital, Yixing, 214200, China
| | - Yuhan Wang
- College of Veterinary Medicine, Key Laboratory of Animal Disease and Human Health of Sichuan, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wenhao Zhong
- College of Veterinary Medicine, Key Laboratory of Animal Disease and Human Health of Sichuan, Sichuan Agricultural University, Chengdu, 611130, China
| | - Shulei Pan
- College of Veterinary Medicine, Key Laboratory of Animal Disease and Human Health of Sichuan, Sichuan Agricultural University, Chengdu, 611130, China
| | - Lei Zhou
- Sichuan Institute of Musk Deer Breeding, Dujiangyan, 611845, China
| | - Yuehong Cheng
- Sichuan Wolong National Natural Reserve Administration Bureau, Wenchuan, 623006, China
| | - Yu Yuan
- College of Veterinary Medicine, Key Laboratory of Animal Disease and Human Health of Sichuan, Sichuan Agricultural University, Chengdu, 611130, China
| | - Ziyao Zhou
- College of Veterinary Medicine, Key Laboratory of Animal Disease and Human Health of Sichuan, Sichuan Agricultural University, Chengdu, 611130, China
| | - Haifeng Liu
- College of Veterinary Medicine, Key Laboratory of Animal Disease and Human Health of Sichuan, Sichuan Agricultural University, Chengdu, 611130, China
| | - Shaqiu Zhang
- College of Veterinary Medicine, Key Laboratory of Animal Disease and Human Health of Sichuan, Sichuan Agricultural University, Chengdu, 611130, China
| | - Guangneng Peng
- College of Veterinary Medicine, Key Laboratory of Animal Disease and Human Health of Sichuan, Sichuan Agricultural University, Chengdu, 611130, China
| | - Qigui Yan
- College of Veterinary Medicine, Key Laboratory of Animal Disease and Human Health of Sichuan, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yan Luo
- College of Veterinary Medicine, Key Laboratory of Animal Disease and Human Health of Sichuan, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xiaoli Zhang
- Jiangsu Yixing People's Hospital, Yixing, 214200, China.
| | - Zhijun Zhong
- College of Veterinary Medicine, Key Laboratory of Animal Disease and Human Health of Sichuan, Sichuan Agricultural University, Chengdu, 611130, China.
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Gama GSP, Pimenta AS, Feijó FMC, de Azevedo TKB, de Melo RR, de Andrade GS. The Potential of Wood Vinegar to Replace Antimicrobials Used in Animal Husbandry-A Review. Animals (Basel) 2024; 14:381. [PMID: 38338024 PMCID: PMC10854697 DOI: 10.3390/ani14030381] [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: 10/24/2023] [Revised: 12/16/2023] [Accepted: 12/27/2023] [Indexed: 02/12/2024] Open
Abstract
The indiscriminate use of antimicrobials in animal husbandry can result in various types of environmental contamination. Part of the dose of these products is excreted, still active, in the animals' feces and urine. These excreta are widely used as organic fertilizers, which results in contamination with antimicrobial molecules. The impacts can occur in several compartments, such as soil, groundwater, and surface watercourses. Also, contamination by antimicrobials fed or administrated to pigs, chickens, and cattle can reach the meat, milk, and other animal products, which calls into question the sustainability of using these products as part of eco-friendly practices. Therefore, a search for alternative natural products is required to replace the conventional antimicrobials currently used in animal husbandry, aiming to mitigate environmental contamination. We thus carried out a review addressing this issue, highlighting wood vinegar (WV), also known as pyroligneous acid, as an alternative antimicrobial with good potential to replace conventional products. In this regard, many studies have demonstrated that WV is a promising product. WV is a nontoxic additive widely employed in the food industry to impart a smoked flavor to foods. Studies have shown that, depending on the WV concentration, good results can be achieved using it as an antimicrobial against pathogenic bacteria and fungi and a valuable growth promoter for poultry and pigs.
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Affiliation(s)
- Gil Sander Próspero Gama
- Graduate Program in Forest Sciences, Forest Engineering, Universidade Federal do Rio Grande do Norte, Rodovia RN 160, km 03 s/n, Distrito de Jundiaí, Macaíba CEP 59.280-000, Brazil; (G.S.P.G.); (A.S.P.); (T.K.B.d.A.); (G.S.d.A.)
| | - Alexandre Santos Pimenta
- Graduate Program in Forest Sciences, Forest Engineering, Universidade Federal do Rio Grande do Norte, Rodovia RN 160, km 03 s/n, Distrito de Jundiaí, Macaíba CEP 59.280-000, Brazil; (G.S.P.G.); (A.S.P.); (T.K.B.d.A.); (G.S.d.A.)
| | - Francisco Marlon Carneiro Feijó
- Graduate Program in Environment, Technology, and Society—PPGATS, Laboratory of Veterinary Microbiology and Laboratory of Wood Technology, Universidade Federal Rural do Semiárido—UFERSA, Av. Francisco Mota, 572—Bairro Costa e Silva, Mossoró CEP 59.625-900, Brazil;
| | - Tatiane Kelly Barbosa de Azevedo
- Graduate Program in Forest Sciences, Forest Engineering, Universidade Federal do Rio Grande do Norte, Rodovia RN 160, km 03 s/n, Distrito de Jundiaí, Macaíba CEP 59.280-000, Brazil; (G.S.P.G.); (A.S.P.); (T.K.B.d.A.); (G.S.d.A.)
| | - Rafael Rodolfo de Melo
- Graduate Program in Environment, Technology, and Society—PPGATS, Laboratory of Veterinary Microbiology and Laboratory of Wood Technology, Universidade Federal Rural do Semiárido—UFERSA, Av. Francisco Mota, 572—Bairro Costa e Silva, Mossoró CEP 59.625-900, Brazil;
| | - Gabriel Siqueira de Andrade
- Graduate Program in Forest Sciences, Forest Engineering, Universidade Federal do Rio Grande do Norte, Rodovia RN 160, km 03 s/n, Distrito de Jundiaí, Macaíba CEP 59.280-000, Brazil; (G.S.P.G.); (A.S.P.); (T.K.B.d.A.); (G.S.d.A.)
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Song J, Chen Y, Mi H, Xu R, Zhang W, Wang C, Rensing C, Wang Y. Prevalence of antibiotic and metal resistance genes in phytoremediated cadmium and zinc contaminated soil assisted by chitosan and Trichoderma harzianum. ENVIRONMENT INTERNATIONAL 2024; 183:108394. [PMID: 38128385 DOI: 10.1016/j.envint.2023.108394] [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: 09/18/2023] [Revised: 12/15/2023] [Accepted: 12/15/2023] [Indexed: 12/23/2023]
Abstract
Heavy metal in soil have been shown to be toxic with high concentrations and acts as selective pressure on both bacterial metal and antibiotic resistance determinants, posing a serious risk to public health. In cadmium (Cd) and zinc (Zn) contaminated soil, chitosan (Chi) and Trichoderma harzianum (Tri) were applied alone and in combination to assist phytoremediation by Amaranthus hypochondriacus L. Prevalence of antibiotic and metal resistance genes (ARGs and MRGs) in the soil was also evaluated using metagenomic approach. Results indicated that the phytoremediation of Cd and Zn contaminated soil was promoted by Chi, and Tri further reinforced this effect, along with the increased availability of Cd and Zn in soil. Meanwhile, combination of Chi and Tri enhanced the prevalence of ARGs (e.g., multidrug and β-lactam resistance genes) and maintained a high level of MRGs (e.g., chromium, copper) in soil. Soil available Zn and Cd fractions were the main factors contributing to ARGs profile by co-selection, while boosted bacterial hosts (e.g., Mitsuaria, Solirubrobacter, Ramlibacter) contributed to prevalence of most MRGs (e.g., Cd). These findings indicate the potential risk of ARGs and MRGs propagation in phytoremediation of metal contaminated soils assisted by organic and biological agents.
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Affiliation(s)
- Jianxiao Song
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710000, Shaanxi, PR China; Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, Xi'an 710000, Shaanxi, PR China
| | - Yanlong Chen
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710000, Shaanxi, PR China; Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, Xi'an 710000, Shaanxi, PR China.
| | - Huizi Mi
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710000, Shaanxi, PR China
| | - Risheng Xu
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710000, Shaanxi, PR China; Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, Xi'an 710000, Shaanxi, PR China
| | - Wenshuang Zhang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710000, Shaanxi, PR China
| | - Chao Wang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710000, Shaanxi, PR China; Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, Xi'an 710000, Shaanxi, PR China
| | - Christopher Rensing
- Institute of Environmental Microbiology, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China
| | - Yuheng Wang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710000, Shaanxi, PR China; Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, Xi'an 710000, Shaanxi, PR China
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Han B, Yang F, Shen S, Mu M, Zhang K. Effects of soil habitat changes on antibiotic resistance genes and related microbiomes in paddy fields. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 895:165109. [PMID: 37385504 DOI: 10.1016/j.scitotenv.2023.165109] [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: 04/24/2023] [Revised: 06/22/2023] [Accepted: 06/22/2023] [Indexed: 07/01/2023]
Abstract
The changes of paddy soil habitat profoundly affect the structure and function of soil microorganisms, but how this process drives the growth and spread of manure- derived antibiotic resistance genes (ARGs) after entering the soil is unclear. Herein, this study explored the environmental fate and behavior of various ARGs in the paddy soil during rice growth period. Results showed that most ARG abundances in flooded soil was lower than that in non-flooded soil during rice growth (decreased by 33.4 %). And soil dry-wet alternation altered microbial community structure in paddy field (P < 0.05), showing that Actinobacteria and Firmicutes increased in proportion under non-flooded conditions, and Chloroflexi, Proteobacteria and Acidobacteria evolved into the dominant groups in flooded soil. Meanwhile, the correlation between ARGs and bacterial communities was stronger than that with mobile genetic elements (MGEs) in both flooded and non-flooded paddy soils. Furthermore, soil properties, especially oxidation reduction potential (ORP), were proved to be an essential factor in regulating the variability of ARGs in the whole rice growth stage by structural equation model, with a direct influence (λ = 0.38, P < 0.05), following by similar effects of bacterial communities and MGEs (λ = 0.36, P < 0.05; λ = 0.29, P < 0.05). This study demonstrated that soil dry-wet alternation effectively reduced the proliferation and dissemination of most ARGs in paddy fields, providing a novel agronomic measure for pollution control of antibiotic resistance in farmland ecosystem.
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Affiliation(s)
- Bingjun Han
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China
| | - Fengxia Yang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China.
| | - Shizhou Shen
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China; Dali, Yunnan, Agro-Ecosystem, National Observation and Research Station, Dali, China
| | - Meirui Mu
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China
| | - Keqiang Zhang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, China; Dali, Yunnan, Agro-Ecosystem, National Observation and Research Station, Dali, China.
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Engin AB, Engin ED, Engin A. Effects of co-selection of antibiotic-resistance and metal-resistance genes on antibiotic-resistance potency of environmental bacteria and related ecological risk factors. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 98:104081. [PMID: 36805463 DOI: 10.1016/j.etap.2023.104081] [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: 08/11/2022] [Revised: 01/23/2023] [Accepted: 02/12/2023] [Indexed: 06/18/2023]
Abstract
The inadequate elimination of micropollutants in wastewater treatment plants (WWTP), cause to increase in the incidence of antibiotic resistant bacterial strains. Growth of microbial pathogens in WWTP is one of the serious public health problems. The widespread and simultaneous emergence of antibiotic resistance genes (ARGs) and heavy metal resistance genes (HMRGs) in the environment with heavy metals create persistent and selective pressure for co-selection of both genes on environmental microorganisms. Co-localization of ARGs and HMRGs on the same horizontal mobile genetic elements (MGEs) allows the spreading of numerous antibiotic-resistant strains of bacteria in aquatic and terrestrial environment. The biofilm formation and colonization potential of environmental bacteria leads to the co-selection of multi-antibiotic resistance and multi-metal tolerance. Horizontal gene transfer (HGT), co-localization of both ARGs and HMRGs on the same MGEs, and the shared resistomes are important bacteria-associated ecological risks factors, which reduce the effectiveness of antibiotics against bacterial infections.
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Affiliation(s)
- Ayse Basak Engin
- Gazi University, Faculty of Pharmacy, Department of Toxicology, Ankara, Turkey.
| | - Evren Doruk Engin
- Ankara University, Biotechnology Institute, Gumusdere Campus, Kecioren, Ankara, Turkey
| | - Atilla Engin
- Gazi University, Faculty of Medicine, Department of General Surgery, Ankara, Turkey
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