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Ali MS, Na SH, Moon BY, Kang HY, Kang HS, Kim SJ, Kim TS, Heo YE, Hwang YJ, Yoon SS, Lim SK. Antimicrobial Resistance Profiles and Molecular Characteristics of Extended-Spectrum β-Lactamase-Producing Salmonella enterica Serovar Typhimurium Isolates from Food Animals During 2010-2021 in South Korea. Foodborne Pathog Dis 2024. [PMID: 39029478 DOI: 10.1089/fpd.2023.0128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2024] Open
Abstract
Extended-spectrum β-lactamase (ESBL)-producing Salmonella is emerging as a worldwide public health concern. In this study, we aimed to investigate the antimicrobial resistance profiles and molecular characteristics of ESBL-producing Salmonella enterica serovar Typhimurium (S. Typhimurium). We obtained a total of 995 S. Typhimurium isolates from the feces and carcasses of pigs (n = 678), chickens (n = 202), and cattle (n = 115) during 2010-2021 in Korea. We found that 35 S. Typhimurium isolates (3.5%) showed resistance to ceftiofur: pigs (51.4%, 18/35) and cattle (42.9%, 15/35). All of the ceftiofur-resistant S. Typhimurium isolates demonstrated multidrug resistance. Moreover, ceftiofur-resistant S. Typhimurium isolates displayed significantly higher rates of resistance to chloramphenicol and trimethoprim/sulfamethoxazole than ceftiofur-susceptible S. Typhimurium isolates (p < 0.05). The ceftiofur-resistant S. Typhimurium isolates produced four different CTX-M-type β-lactamase, comprising blaCTX-M-55 in the majority (51.4%, 18/35), followed by blaCTX-M-65 (28.6%, 10/35), blaCTX-M-14 (17.1%, 6/35), and blaCTX-M-1 (2.9%, 1/35). Among the 35 ceftiofur-resistant S. Typhimurium isolates, 16 blaCTX-M-55-positive isolates and one blaCTX-M-1-positive isolate were transferred to recipient Escherichia coli RG488 by conjugation. The predominantly found transposable units were blaCTX-M-55-orf477 (45.7%, 16/35), followed by blaCTX-M-65-IS903 (28.6%, 10/35) and blaCTX-M-14-IS903 (17.1%, 6/35). Ceftiofur-resistant S. Typhimurium represented 19 types, with types P1-19 (22.9%, 8/35) and P12-34 (22.9%, 8/35) making up the majority and being found in most farms nationwide. Sequence types (STs) were different by animal species: ST19 (48.6%, 17/35) and ST34 (42.9%, 15/35) were mostly found STs in pigs and cattle, respectively. These findings showed that food animals, especially pigs and cattle, act as reservoirs of blaCTX-M-harboring S. Typhimurium that can potentially be spread to humans.
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Affiliation(s)
- Md Sekendar Ali
- Department of Animal and Plant Quarantine Agency, Bacterial Disease Division, Gimcheon-si, Republic of Korea
| | - Seok-Hyeon Na
- Department of Animal and Plant Quarantine Agency, Bacterial Disease Division, Gimcheon-si, Republic of Korea
| | - Bo-Youn Moon
- Department of Animal and Plant Quarantine Agency, Bacterial Disease Division, Gimcheon-si, Republic of Korea
| | - Hee Young Kang
- Centre for Infectious Diseases Research, Korea Centers for Disease Control and Prevention, Cheongju, Republic of Korea
| | - Hee-Seung Kang
- Department of Animal and Plant Quarantine Agency, Bacterial Disease Division, Gimcheon-si, Republic of Korea
| | - Su-Jeong Kim
- Department of Animal and Plant Quarantine Agency, Bacterial Disease Division, Gimcheon-si, Republic of Korea
| | - Tae-Sun Kim
- Public Health and Environment Institute of Gwangju, Gwangju, Republic of Korea
| | - Ye-Eun Heo
- Department of Animal and Plant Quarantine Agency, Bacterial Disease Division, Gimcheon-si, Republic of Korea
| | - Yu-Jeong Hwang
- Department of Animal and Plant Quarantine Agency, Bacterial Disease Division, Gimcheon-si, Republic of Korea
| | - Soon Seek Yoon
- Department of Animal and Plant Quarantine Agency, Bacterial Disease Division, Gimcheon-si, Republic of Korea
| | - Suk-Kyung Lim
- Department of Animal and Plant Quarantine Agency, Bacterial Disease Division, Gimcheon-si, Republic of Korea
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Sartori L, Sellera FP, Silva-Pereira TT, Fuga B, Fuentes-Castillo D, Dropa M, Moura Q, Fernandes MR, Rodrigues L, Esposito F, Sano E, Aleman MAR, Gregory L, Lincopan N. Gut colonization by extended-spectrum β-lactamase-producing Escherichia coli in dairy herd in Brazil: successful dissemination of a One Health clone. Vet Res Commun 2024:10.1007/s11259-024-10456-3. [PMID: 38972932 DOI: 10.1007/s11259-024-10456-3] [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: 05/02/2024] [Accepted: 06/25/2024] [Indexed: 07/09/2024]
Abstract
The overuse of antimicrobials in livestock has contributed to the emergence and selection of clinically relevant multidrug-resistant bacteria. In Brazil, there is no conclusive information on the occurrence of Escherichia coli producing extended-spectrum β-lactamase (ESβL) in cattle breeding, which is an important sector of agribusiness in this country. Herein, we investigated the presence of ESβL-positive E. coli strains in dairy cattle from a commercial farm with routine practice of therapeutic cephalosporins. Ninety-five rectal swab samples were collected from healthy dairy calves and cows under treatment with ceftiofur. Samples were screened for the presence of ESβL producers, and positive isolates were identified by MALDI-TOF, with subsequent screening for genes encoding ESβL variants by PCR and sequencing. The presence of ESβL (CTX-M-15)-producing E. coli was confirmed in calves, and lactating and dry cows. Most ESβL strains with genetic homologies ≥ 90% were grouped into two major PFGE clusters, confirming the suscessful expansion of clonally related lineages in animals from different lactating cycles, on the same property. Four representatives CTX-M-15-positive E. coli strains had their genomes sequenced, belonging to the clonal complex (CC) 23 and sequence type (ST) 90. A phylogeographical landscape of ST90 was performed revealing a global One Health linkage. Our results highlight the intestinal microbiota of dairy cattle as a hotspot for the spread of critical priority ESβL-producing E. coli and demonstrate that ST90 is an international clone genomically adapted to human and animal hosts, which deserve additional investigation to determine its zoonotic potential and impact in food chain.
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Affiliation(s)
- Luciana Sartori
- Department of Clinical Analysis, School of Pharmacy, University of São Paulo, São Paulo, Brazil
| | - Fábio P Sellera
- Department of Internal Medicine, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
- School of Veterinary Medicine, Metropolitan University of Santos, Santos, Brazil
- One Health Brazilian Resistance Project (OneBR), São Paulo, Brazil
| | - Taiana T Silva-Pereira
- Departmentof Microbiology, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Bruna Fuga
- Department of Clinical Analysis, School of Pharmacy, University of São Paulo, São Paulo, Brazil
- One Health Brazilian Resistance Project (OneBR), São Paulo, Brazil
- Departmentof Microbiology, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Danny Fuentes-Castillo
- One Health Brazilian Resistance Project (OneBR), São Paulo, Brazil
- Departamento de Patología y Medicina Preventiva, Facultad de Ciencias Veterinarias, Universidad de Concepción, Chillán, Chile
| | - Milena Dropa
- MicroRes Laboratory, School of Public Health, University of São Paulo, São Paulo, Brazil
| | - Quézia Moura
- One Health Brazilian Resistance Project (OneBR), São Paulo, Brazil
- Federal Institute of Espírito Santo, Vila Velha, Brazil
| | - Miriam R Fernandes
- Department of Clinical Analysis, School of Pharmacy, University of São Paulo, São Paulo, Brazil
| | - Larissa Rodrigues
- One Health Brazilian Resistance Project (OneBR), São Paulo, Brazil
- Departmentof Microbiology, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Fernanda Esposito
- Department of Clinical Analysis, School of Pharmacy, University of São Paulo, São Paulo, Brazil
- One Health Brazilian Resistance Project (OneBR), São Paulo, Brazil
| | - Elder Sano
- One Health Brazilian Resistance Project (OneBR), São Paulo, Brazil
- Departmentof Microbiology, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Mario A R Aleman
- Department of Internal Medicine, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Lilian Gregory
- Department of Internal Medicine, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Nilton Lincopan
- Department of Clinical Analysis, School of Pharmacy, University of São Paulo, São Paulo, Brazil.
- One Health Brazilian Resistance Project (OneBR), São Paulo, Brazil.
- Departmentof Microbiology, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil.
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3
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Duc HM, Hoa TTK, Thang NV, Son HM. First Report on the Occurrence and Antibiotic Resistance Profile of Colistin-Resistant Escherichia coli in Raw Beef and Cow Feces in Vietnam. Microorganisms 2024; 12:1305. [PMID: 39065073 DOI: 10.3390/microorganisms12071305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Revised: 06/18/2024] [Accepted: 06/21/2024] [Indexed: 07/28/2024] Open
Abstract
Colistin-resistant Escherichia coli (COE) has been recently recognized as a serious threat to animal and human health. This study aimed to determine the prevalence and antibiotic resistance profile of COE isolated from raw beef and cow feces in Vietnam. Our results showed that 16% (16/100) and 32% (32/100) of raw beef and cow feces samples were positive for COE, respectively. A total of 48 COE strains were isolated, with 16 originating from raw beef and 32 from cow feces samples. The antibiotic susceptibility test revealed that the COE isolates were highly resistant to ampicillin, tetracycline, florfenicol, trimethoprim/sulfamethoxazole, streptomycin, and nalidixic acid, with resistance rates ranging from 66.67% to 87.5%. In addition, 87.5% of the isolates were identified to be multidrug-resistant strains. Further molecular characterization indicated that all COE isolates carried the mcr-1 gene, with 16 of them also harboring blaCTX-M-55 genes. Taken together, the findings in this study demonstrate that raw beef and cow feces are important sources of COE, which can be potentially transmitted to humans through the food chain.
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Affiliation(s)
- Hoang Minh Duc
- Department of Veterinary Public Health, Faculty of Veterinary Medicine, Vietnam National University of Agriculture Trau Quy, Gia Lam, Hanoi 12400, Vietnam
| | - Tran Thi Khanh Hoa
- Department of Veterinary Public Health, Faculty of Veterinary Medicine, Vietnam National University of Agriculture Trau Quy, Gia Lam, Hanoi 12400, Vietnam
| | - Nguyen Van Thang
- Veterinary Hospital, Faculty of Veterinary Medicine, Vietnam National University of Agriculture Trau Quy, Gia Lam, Hanoi 12400, Vietnam
| | - Hoang Minh Son
- Department of Anatomy and Histology, Faculty of Veterinary Medicine, Vietnam National University of Agriculture, Trau Quy, Gia Lam, Hanoi 12400, Vietnam
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Nery Garcia BL, Dantas STA, da Silva Barbosa K, Mendes Mitsunaga T, Butters A, Camargo CH, Nobrega DB. Extended-Spectrum Beta-Lactamase-Producing Escherichia coli and Other Antimicrobial-Resistant Gram-Negative Pathogens Isolated from Bovine Mastitis: A One Health Perspective. Antibiotics (Basel) 2024; 13:391. [PMID: 38786120 PMCID: PMC11117280 DOI: 10.3390/antibiotics13050391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 04/17/2024] [Accepted: 04/19/2024] [Indexed: 05/25/2024] Open
Abstract
Antimicrobial resistance (AMR) poses an imminent threat to global public health, driven in part by the widespread use of antimicrobials in both humans and animals. Within the dairy cattle industry, Gram-negative coliforms such as Escherichia coli and Klebsiella pneumoniae stand out as major causative agents of clinical mastitis. These same bacterial species are frequently associated with severe infections in humans, including bloodstream and urinary tract infections, and contribute significantly to the alarming surge in antimicrobial-resistant bacterial infections worldwide. Additionally, mastitis-causing coliforms often carry AMR genes akin to those found in hospital-acquired strains, notably the extended-spectrum beta-lactamase genes. This raises concerns regarding the potential transmission of resistant bacteria and AMR from mastitis cases in dairy cattle to humans. In this narrative review, we explore the distinctive characteristics of antimicrobial-resistant E. coli and Klebsiella spp. strains implicated in clinical mastitis and human infections. We focus on the molecular mechanisms underlying AMR in these bacterial populations and critically evaluate the potential for interspecies transmission. Despite some degree of similarity observed in sequence types and mobile genetic elements between strains found in humans and cows, the existing literature does not provide conclusive evidence to assert that coliforms responsible for mastitis in cows pose a direct threat to human health. Finally, we also scrutinize the existing literature, identifying gaps and limitations, and propose avenues for future research to address these pressing challenges comprehensively.
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Affiliation(s)
- Breno Luis Nery Garcia
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga 13635-900, SP, Brazil; (B.L.N.G.); (S.T.A.D.); (K.d.S.B.); (T.M.M.)
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada;
| | - Stéfani Thais Alves Dantas
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga 13635-900, SP, Brazil; (B.L.N.G.); (S.T.A.D.); (K.d.S.B.); (T.M.M.)
| | - Kristian da Silva Barbosa
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga 13635-900, SP, Brazil; (B.L.N.G.); (S.T.A.D.); (K.d.S.B.); (T.M.M.)
| | - Thatiane Mendes Mitsunaga
- Department of Animal Nutrition and Production, School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga 13635-900, SP, Brazil; (B.L.N.G.); (S.T.A.D.); (K.d.S.B.); (T.M.M.)
| | - Alyssa Butters
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada;
| | | | - Diego Borin Nobrega
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada;
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Ortiz Y, Cerino B, Moreno M, Yañez E, Heredia N, Dávila-Aviña J, Quezada T, Calle A, García S. Diarrheagenic Escherichia coli with Multidrug Resistance in Cattle from Mexico. J Food Prot 2024; 87:100257. [PMID: 38423360 DOI: 10.1016/j.jfp.2024.100257] [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: 10/06/2023] [Revised: 02/21/2024] [Accepted: 02/23/2024] [Indexed: 03/02/2024]
Abstract
Mexico is an important producer/exporter of cattle and cattle products. In the last decade, an increase in antibiotic resistance in E. coli pathotype strains from livestock environments has been reported. This study aimed to determine the prevalence and antibiotic resistance profiles of E. coli pathotype strains from the feces of beef or dairy cattle reared in the states of Aguascalientes (AG, central) and Nuevo Leon (NL, northeastern) in Mexico. One hundred and ten fecal samples were collected (beef cattle-AG = 30; dairy cattle-AG = 20; beef cattle-NL = 30; dairy cattle-NL = 30). From these, E. coli was isolated using selective/differential media and confirmed on chromogenic media. Multiplex PCR was used to identify diarrheagenic E. coli, and the Kirby-Bauer technique was used to determine the antimicrobial susceptibilities. All the animals harbored E. coli, and pathotypes were found in 34 animals from both, beef and dairy cattle, mainly from Aguascalientes. Of the positive samples, 31 harbored a single E. coli pathotype, whereas three samples harbored two different pathotypes; EHEC was the most prevalent, followed by EPEC, ETEC, and EIEC or the combination of two of them in some samples. Most pathotype strains (19/37) were isolated from beef cattle. Neither the animals' productive purpose (beef or dairy cattle) (r = 0.155) nor the geographic regions (Aguascalientes or Nuevo Leon) (r = -0.066) had a strong positive correlation with the number of E. coli pathotype strains. However, animals reared in Aguascalientes had up to 8.5-fold higher risk of harboring E. coli pathotype strains than those reared in Nuevo Leon. All pathotype strains were resistant to erythromycin, tetracycline, and trimethoprim/sulfamethoxazole, and all dairy cattle pathotype strains were further resistant to five β-lactams (χ2, P = 0.017). The existence of these pathotypes and multidrug-resistant pathogens in the food chain is a risk to public health.
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Affiliation(s)
- Yaraymi Ortiz
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, San Nicolás de los Garza, Nuevo León, México 66455, Mexico
| | - Brenda Cerino
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, San Nicolás de los Garza, Nuevo León, México 66455, Mexico
| | - Mauricio Moreno
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, San Nicolás de los Garza, Nuevo León, México 66455, Mexico
| | - Elizabeth Yañez
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, San Nicolás de los Garza, Nuevo León, México 66455, Mexico
| | - Norma Heredia
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, San Nicolás de los Garza, Nuevo León, México 66455, Mexico
| | - Jorge Dávila-Aviña
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, San Nicolás de los Garza, Nuevo León, México 66455, Mexico
| | - Teódulo Quezada
- Universidad Autónoma de Aguascalientes, Ciudad Universitaria, Aguascalientes, México 20100, Mexico
| | | | - Santos García
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, San Nicolás de los Garza, Nuevo León, México 66455, Mexico.
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Mahdi IS, Abdula AM, Jassim AMN, Baqi Y. Design, Synthesis, Antimicrobial Properties, and Molecular Docking of Novel Furan-Derived Chalcones and Their 3,5-Diaryl-∆ 2-pyrazoline Derivatives. Antibiotics (Basel) 2023; 13:21. [PMID: 38247580 PMCID: PMC10812776 DOI: 10.3390/antibiotics13010021] [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: 10/21/2023] [Revised: 12/18/2023] [Accepted: 12/20/2023] [Indexed: 01/23/2024] Open
Abstract
The present work focuses on the synthesis and preliminary structure activity relationships (SARs) of furan-derived chalcones and their corresponding ∆2-pyrazoline derivatives as antimicrobial agents. Eight novel chalcone derivatives and eight ∆2-pyrazoline compounds were synthesized in moderate to good isolated yields. The target compounds were evaluated as antimicrobial agents against two Gram-positive (Staphylococcus aureus and Staphylococcus epidermidis), two Gram-negative (Escherichia coli and Klebsiella pneumoniae), and fungi (Candida albicans) species. Based on the SARs, chalcones 2a and 2h showed inhibition activity on all tested microbial species, while ∆2-pyrazoline 3d was found to be selective for some microbial species. The most potent compounds (2a, 2h, and 3d) were docked into glucosamine-6-phosphate synthase (GlcN-6-P), the molecular target enzyme for antimicrobial agents, utilizing the Autodock 4.2 program, in order to study their virtual affinity and binding mode with the target enzyme. The selected potent compounds were found to bind to the active site of the enzyme probably in a similar way to that of the substrate as suggested by the docking study. In summary, the newly developed furan-derived chalcones and their ∆2-pyrazoline derivatives could serve as potent leads toward the development of novel antimicrobial agents.
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Affiliation(s)
- Inas S. Mahdi
- Department of Chemistry, College of Science, Mustansiriyah University, Baghdad P.O. Box 14022, Iraq; (I.S.M.); (A.M.N.J.)
| | - Ahmed Mutanabbi Abdula
- Department of Chemistry, College of Science, Mustansiriyah University, Baghdad P.O. Box 14022, Iraq; (I.S.M.); (A.M.N.J.)
| | - Abdulkadir M. Noori Jassim
- Department of Chemistry, College of Science, Mustansiriyah University, Baghdad P.O. Box 14022, Iraq; (I.S.M.); (A.M.N.J.)
| | - Younis Baqi
- Department of Chemistry, College of Science, Sultan Qaboos University, Muscat P.O. Box 36, Oman
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Gelalcha BD, Gelgie AE, Kerro Dego O. Prevalence and antimicrobial resistance profiles of extended-spectrum beta-lactamase-producing Escherichia coli in East Tennessee dairy farms. Front Vet Sci 2023; 10:1260433. [PMID: 38239744 PMCID: PMC10795760 DOI: 10.3389/fvets.2023.1260433] [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: 07/17/2023] [Accepted: 11/16/2023] [Indexed: 01/22/2024] Open
Abstract
Introduction The extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae, such as Escherichia coli, are emerging as a serious threat to global health due to their rapid spread and their multidrug-resistant (MDR) phenotypes. However, limited information is available regarding the prevalence and antimicrobial resistance (AMR) profile of ESBL-E. coli in the United States dairy farms. This study aimed to determine the prevalence and AMR pattern of ESBL-E. coli in East Tennessee dairy cattle farms. Methods Rectal fecal samples from dairy cattle (n = 508) and manure (n = 30), water (n = 19), and feed samples (n = 15) were collected from 14 farms. The presumptive E. coli was isolated on CHROMagar™ ESBL and confirmed by matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF MS). Antimicrobial susceptibility testing was performed on the ESBL-E. coli isolates. Results and discussion From 572 fecal and farm environmental samples, a total of 233 (41%, n = 572) ESBL-E. coli were identified. The prevalence of fecal ESBL-E. coli was 47.5% (95% CI: 46.2-49.2). The within-farm prevalence of ESBL-E. coli ranged from 8 to 100%. Recent treatment history with third-generation cephalosporins (3GC), cow parity ≥3, and calves were the independent risk factors associated (P < 0.05) with fecal carriage of ESBL-E. coli. Overall, 99.6% (n = 231) ESBL-E. coli tested were phenotypically resistant to at least one of the 14 antimicrobial agents tested. The most common AMR phenotypes were against beta-lactam antibiotics, ampicillin (99.1%; n = 231 isolates), and ceftriaxone (98.7%, n = 231). Most ESBL-E. coli isolates (94.4%) were MDR (resistance to ≥3 antimicrobial classes), of which 42.6% showed co-resistance to at least six classes of antimicrobials. ESBL-E. coli isolates with concurrent resistance to ceftriaxone, ampicillin, streptomycin, tetracycline, sulfisoxazole, and chloramphenicol are widespread and detected in all the farms. The detection of MDR ESBL-E. coli suggests that dairy cattle can be a reservoir for these bacteria, highlighting the associated public health risk.
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Affiliation(s)
| | | | - Oudessa Kerro Dego
- Department of Animal Science, The University of Tennessee, Knoxville, TN, United States
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Gelalcha BD, Mohammed RI, Gelgie AE, Kerro Dego O. Molecular epidemiology and pathogenomics of extended-spectrum beta-lactamase producing- Escherichia coli and - Klebsiella pneumoniae isolates from bulk tank milk in Tennessee, USA. Front Microbiol 2023; 14:1283165. [PMID: 38029210 PMCID: PMC10658008 DOI: 10.3389/fmicb.2023.1283165] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 10/09/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction The rise in extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae in dairy cattle farms poses a risk to human health as they can spread to humans through the food chain, including raw milk. This study was designed to determine the status, antimicrobial resistance, and pathogenic potential of ESBL-producing -E. coli and -Klebsiella spp. isolates from bulk tank milk (BTM). Methods Thirty-three BTM samples were collected from 17 dairy farms and screened for ESBL-E. coli and -Klebsiella spp. on CHROMagar ESBL plates. All isolates were confirmed by matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) and subjected to antimicrobial susceptibility testing and whole genome sequencing (WGS). Results Ten presumptive ESBL-producing bacteria, eight E. coli, and two K. pneumoniae were isolated. The prevalence of ESBL-E. coli and -K. pneumoniae in BTM was 21.2% and 6.1%, respectively. ESBL-E. coli were detected in 41.2% of the study farms. Seven of the ESBL-E. coli isolates were multidrug resistant (MDR). The two ESBL-producing K. pneumoniae isolates were resistant to ceftriaxone. Seven ESBL-E. coli strains carry the blaCTX-M gene, and five of them co-harbored blaTEM-1. ESBL-E. coli co-harbored blaCTX-M with other resistance genes, including qnrB19, tet(A), aadA1, aph(3'')-Ib, aph(6)-Id), floR, sul2, and chromosomal mutations (gyrA, gyrB, parC, parE, and pmrB). Most E. coli resistance genes were associated with mobile genetic elements, mainly plasmids. Six sequence types (STs) of E. coli were detected. All ESBL-E. coli were predicted to be pathogenic to humans. Four STs (three ST10 and ST69) were high-risk clones of E. coli. Up to 40 virulence markers were detected in all E. coli isolates. One of the K. pneumoniae was ST867; the other was novel strain. K. pneumoniae isolates carried three types of beta-lactamase genes (blaCTX-M, blaTEM-1 and blaSHV). The novel K. pneumoniae ST also carried a novel IncFII(K) plasmid ST. Conclusion Detection of high-risk clones of MDR ESBL-E. coli and ESBL-K. pneumoniae in BTM indicates that raw milk could be a reservoir of potentially zoonotic ESBL-E. coli and -K. pneumoniae.
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Affiliation(s)
- Benti D. Gelalcha
- Department of Animal Science, The University of Tennessee, Knoxville, TN, United States
| | - Ruwaa I. Mohammed
- Department of Genome Science and Technology, The University of Tennessee, Knoxville, TN, United States
| | - Aga E. Gelgie
- Department of Animal Science, The University of Tennessee, Knoxville, TN, United States
| | - Oudessa Kerro Dego
- Department of Animal Science, The University of Tennessee, Knoxville, TN, United States
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Ginn O, Tank JL, Badilla-Aguilar A, Snyder E, Brandão-Dias PFP, Thrift E, Bolster D, Bibby K. Persistence of Antibiotic Resistance Genes Varies with Particle Size and Substrate Conditions in Recirculating Streams. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023. [PMID: 37290054 DOI: 10.1021/acs.est.3c02374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Antibiotic resistance (AR) determinants are enriched in animal manures, a significant portion of which is land-applied as a soil amendment or as fertilizer, leading to potential AR runoff and microbial pollution in adjacent surface waters. To effectively inform AR monitoring and mitigation efforts, a thorough understanding and description of the persistence and transport of manure-derived AR in flowing waters are needed. We used experimental recirculating mesocosms to assess water-column removal rates of antibiotic resistance genes (ARGs) originating from a cow manure slurry collected from a dairy farm. We quantified the effect of three benthic (i.e., bottom) substrate variations and particle sizes of manure slurry on water column removal rates. Overall, we observed variation in ARG behavior across substrate treatments and particle sizes. For ARGs associated with small particles, removal rates were higher in mesocosms with a substrate. tetW was typically removed at the highest rates across particle size and treatment, followed by ermB and blaTEM. Our data suggests that both substrate character and particle size exert control on the fate and transport of ARGs in surface waters, laying the foundation for future research in this area to establish a predictive framework for AR persistence and fate in flowing waters.
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Affiliation(s)
- Olivia Ginn
- Department of Civil & Environmental Engineering & Earth Science, University of Notre Dame, Notre Dame, Indiana 46556, United States
- Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Jennifer L Tank
- Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Andrei Badilla-Aguilar
- Department of Civil & Environmental Engineering & Earth Science, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Elise Snyder
- Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | | | - Emma Thrift
- Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Diogo Bolster
- Department of Civil & Environmental Engineering & Earth Science, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Kyle Bibby
- Department of Civil & Environmental Engineering & Earth Science, University of Notre Dame, Notre Dame, Indiana 46556, United States
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Fonseca M, Heider LC, Stryhn H, McClure JT, Léger D, Rizzo D, Warder L, Dufour S, Roy JP, Kelton DF, Renaud D, Barkema HW, Sanchez J. Intramammary and systemic use of antimicrobials and their association with resistance in generic Escherichia coli recovered from fecal samples from Canadian dairy herds: A cross-sectional study. Prev Vet Med 2023; 216:105948. [PMID: 37263090 DOI: 10.1016/j.prevetmed.2023.105948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 05/10/2023] [Accepted: 05/21/2023] [Indexed: 06/03/2023]
Abstract
Antimicrobial resistance (AMR) in animals, including dairy cattle, is a significant concern for animal and public health worldwide. In this study, we used data collected through the Canadian Dairy Network for Antimicrobial Stewardship and Resistance (CaDNetASR) to: (1) describe the proportions of AMR in fecal E. coli, and (2) investigate the relationship between antimicrobial use (AMU) (intramammary and systemic routes, while accounting for confounding by other variables) and AMR/multidrug resistance (MDR - resistance to ≥ 3 antimicrobial classes) in fecal E. coli from Canadian dairy farms. We hypothesized that an increase of the AMU was associated with an increase in AMR in E. coli isolates. A total of 140 dairy farms across five provinces in Canada were included in the study. Fecal samples from pre-weaned calves, post-weaned heifers, lactating cows, and farm manure storage were cultured, and E. coli isolates were identified using MALDI-TOF MS. The minimum inhibitory concentrations (MIC) to 14 antimicrobials were evaluated using a microbroth dilution methodology. AMU was quantified in Defined Course Dose (DCD - the dose for a standardized complete treatment course on a standard size animal) and converted to a rate indicator - DCD/100 animal-years. Of 1134 fecal samples collected, the proportion of samples positive for E. coli in 2019 and 2020 was 97.1% (544/560) and 94.4% (542/574), respectively. Overall, 24.5% (266/1086) of the E. coli isolates were resistant to at least one antimicrobial. Resistance towards tetracycline was commonly observed (20.7%), whereas resistance to third-generation cephalosporins, fluoroquinolones, and carbapenems was found in 2.2%, 1.4%, and 0.1% of E. coli isolates, respectively. E. coli isolates resistant to two or ≥ 3 antimicrobial classes (MDR) was 2.7% and 15%, respectively. Two multilevel models were built to explore risk factors associated with AMR with AMU being the main exposure. Systemic AMU was associated with increased E. coli resistance. For an increase in systemic AMU equivalent to its IQR, the odds of resistance to any antimicrobial in the model increased by 18%. Fecal samples from calves had higher odds of being resistant to any antimicrobial when compared to other production ages and farm manure storage. The samples collected in 2020 were less likely to be resistant when compared to samples collected in 2019. Compared to previous studies in dairy cattle in North America, AMR in E. coli was lower.
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Affiliation(s)
- Mariana Fonseca
- Department of Health Management, University of Prince Edward Island, Charlottetown, PE, Canada.
| | - Luke C Heider
- Department of Health Management, University of Prince Edward Island, Charlottetown, PE, Canada
| | - Henrik Stryhn
- Department of Health Management, University of Prince Edward Island, Charlottetown, PE, Canada
| | - J Trenton McClure
- Department of Health Management, University of Prince Edward Island, Charlottetown, PE, Canada
| | - David Léger
- Public Health Agency of Canada, Center for Foodborne, Environmental and Zoonotic Infectious Diseases, Guelph, ON, Canada
| | - Daniella Rizzo
- Public Health Agency of Canada, Center for Foodborne, Environmental and Zoonotic Infectious Diseases, Guelph, ON, Canada
| | - Landon Warder
- Department of Health Management, University of Prince Edward Island, Charlottetown, PE, Canada
| | - Simon Dufour
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Jean-Philippe Roy
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - David F Kelton
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada
| | - David Renaud
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada
| | | | - Javier Sanchez
- Department of Health Management, University of Prince Edward Island, Charlottetown, PE, Canada
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