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Yuan Y, Hu Y, Zhang X, Zhong W, Pan S, Wang L, Zhou Z, Liu H, Zhang S, Peng G, Wang Y, Yan Q, Luo Y, Shi K, Zhong Z. Characteristics of MDR E. coli strains isolated from Pet Dogs with clinic diarrhea: A pool of antibiotic resistance genes and virulence-associated genes. PLoS One 2024; 19:e0298053. [PMID: 38416699 PMCID: PMC10901357 DOI: 10.1371/journal.pone.0298053] [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: 09/23/2023] [Accepted: 01/17/2024] [Indexed: 03/01/2024] Open
Abstract
The increasing number of multi-drug resistant (MDR) bacteria in companion animals poses a threat to both pet treatment and public health. To investigate the characteristics of MDR Escherichia coli (E. coli) from dogs, we detected the antimicrobial resistance (AMR) of 135 E. coli isolates from diarrheal pet dogs by disc diffusion method (K-B method), and screened antibiotic resistance genes (ARGs), virulence-associated genes (VAGs), and population structure (phylogenetic groups and MLST) by polymerase chain reaction (PCR) for 74 MDR strains, then further analyzed the association between AMRs and ARGs or VAGs. Our results showed that 135 isolates exhibited high resistance to AMP (71.11%, 96/135), TET (62.22%, 84/135), and SXT (59.26%, 80/135). Additionally, 54.81% (74/135) of the isolates were identified as MDR E. coli. In 74 MDR strains, a total of 12 ARGs in 6 categories and 14 VAGs in 4 categories were observed, of which tetA (95.95%, 71/74) and fimC (100%, 74/74) were the most prevalent. Further analysis of associations between ARGs and AMRs or VAGs in MDR strains revealed 23 significant positive associated pairs were observed between ARGs and AMRs, while only 5 associated pairs were observed between ARGs and VAGs (3 positive associated pairs and 2 negative associated pairs). Results of population structure analysis showed that B2 and D groups were the prevalent phylogroups (90.54%, 67/74), and 74 MDR strains belonged to 42 STs (6 clonal complexes and 23 singletons), of which ST10 was the dominant lineage. Our findings indicated that MDR E. coli from pet dogs carry a high diversity of ARGs and VAGs, and were mostly belong to B2/D groups and ST10. Measures should be taken to prevent the transmission of MDR E. coli between companion animals and humans, as the fecal shedding of MDR E. coli from pet dogs may pose a threat to humans.
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Affiliation(s)
- Yu Yuan
- College of Veterinary Medicine, Sichuan Agricultural University, Key Laboratory of Animal Disease and Human Health of Sichuan, Chengdu, China
| | - Yan Hu
- College of Veterinary Medicine, Sichuan Agricultural University, Key Laboratory of Animal Disease and Human Health of Sichuan, Chengdu, China
| | | | - Wenhao Zhong
- College of Veterinary Medicine, Sichuan Agricultural University, Key Laboratory of Animal Disease and Human Health of Sichuan, Chengdu, China
| | - Shulei Pan
- College of Veterinary Medicine, Sichuan Agricultural University, Key Laboratory of Animal Disease and Human Health of Sichuan, Chengdu, China
| | - Liqin Wang
- The Chengdu Zoo, Institute of Wild Animals, Chengdu, China
| | - Ziyao Zhou
- College of Veterinary Medicine, Sichuan Agricultural University, Key Laboratory of Animal Disease and Human Health of Sichuan, Chengdu, China
| | - Haifeng Liu
- College of Veterinary Medicine, Sichuan Agricultural University, Key Laboratory of Animal Disease and Human Health of Sichuan, Chengdu, China
| | - Shaqiu Zhang
- College of Veterinary Medicine, Sichuan Agricultural University, Key Laboratory of Animal Disease and Human Health of Sichuan, Chengdu, China
| | - Guangneng Peng
- College of Veterinary Medicine, Sichuan Agricultural University, Key Laboratory of Animal Disease and Human Health of Sichuan, Chengdu, China
| | - Ya Wang
- College of Veterinary Medicine, Sichuan Agricultural University, Key Laboratory of Animal Disease and Human Health of Sichuan, Chengdu, China
| | - Qigui Yan
- College of Veterinary Medicine, Sichuan Agricultural University, Key Laboratory of Animal Disease and Human Health of Sichuan, Chengdu, China
| | - Yan Luo
- College of Veterinary Medicine, Sichuan Agricultural University, Key Laboratory of Animal Disease and Human Health of Sichuan, Chengdu, China
| | - Keyun Shi
- Jiangsu Yixing People’s Hospital, Yixing, China
| | - Zhijun Zhong
- College of Veterinary Medicine, Sichuan Agricultural University, Key Laboratory of Animal Disease and Human Health of Sichuan, Chengdu, China
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Xin C, Hill F, Elsohaby I. Retrospective analysis of antimicrobial resistance in bacterial pathogens from pet rabbits in Hong Kong, 2019-2022. J Vet Diagn Invest 2024:10406387241233546. [PMID: 38414271 DOI: 10.1177/10406387241233546] [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: 02/29/2024] Open
Abstract
Antimicrobial resistance (AMR) is a growing threat to human and animal health. Data are limited on the prevalence of resistant bacteria in pet rabbits. Therefore, we aimed to identify prevalent bacterial infections and AMR profiles among pet rabbits in Hong Kong (HK). Our search of the CityU Veterinary Diagnostic Laboratory (VDL) database found 301 cases of pet rabbits submitted for bacteriologic and antimicrobial susceptibility testing by veterinarians at 20 exotic veterinary clinics across HK between 2019 and 2022. The rabbits were of 8 different breeds and had a median age of 6.5 y, with 54.8% males, 40.2% females, and 5% unspecified. Of the 301 samples received, 168 (55.8%) had positive bacterial growth; 125 (74.4%) had single bacterial isolates, and 43 (25.6%) had mixed cultures. Cultures included Enterococcus faecalis (21.3%) as the most frequently isolated gram-positive bacterium, followed by Streptococcus intermedius (12.5%), and Staphylococcus aureus (11.3%). The most frequently isolated gram-negative bacteria were Pseudomonas aeruginosa (18.1%), followed by Escherichia coli (8.3%), Pasteurella multocida (6.9%), and Klebsiella pneumoniae (4.2%). Approximately 83% of the isolates had acquired resistance to at least one antimicrobial agent, and 49.4% were multidrug-resistant. The isolated bacteria had high levels of resistance to penicillin (69.8%), clindamycin (47.4%), and doxycycline (46.9%). Our findings highlight the high levels of AMR in bacteria isolated from pet rabbit clinical samples in HK; many of these bacteria are zoonotic and pose a public health threat.
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Affiliation(s)
- Chen Xin
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Hong Kong SAR, China
| | - Fraser Hill
- CityU Veterinary Diagnostic Laboratory, City University of Hong Kong, Hong Kong SAR, China
| | - Ibrahim Elsohaby
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Hong Kong SAR, China
- Centre for Applied One Health Research and Policy Advice (OHRP), City University of Hong Kong, Hong Kong SAR, China
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Maroto-Tello A, Ayllón T, Aguinaga-Casañas MA, Ariza JJ, Penelo S, Baños A, Ortiz-Díez G. In Vitro Activity of Allium cepa Organosulfur Derivatives against Canine Multidrug-Resistant Strains of Staphylococcus spp. and Enterobacteriaceae. Vet Sci 2024; 11:26. [PMID: 38250932 PMCID: PMC10820550 DOI: 10.3390/vetsci11010026] [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: 10/27/2023] [Revised: 12/06/2023] [Accepted: 12/29/2023] [Indexed: 01/23/2024] Open
Abstract
BACKGROUND The increase of multi-resistant bacteria, especially Staphylococcus spp. and Enterobacteriaceae, constitutes a challenge in veterinary medicine. The rapid growth of resistance is outpacing antibiotic discovery. Innovative strategies are needed, including the use of natural products like Allium species (Allium sativum L. and Allium cepa L.), which have been used empirically for centuries to treat infectious diseases in humans and farm and aquaculture animals due to their antibacterial properties. METHODS This study aimed to evaluate the in vitro activity of two Allium-derived compounds, propyl propane thiosulfinate (PTS) and propyl propane thiosulfonate (PTSO), against multi-resistant Staphylococcus spp. (n = 30) and Enterobacteriaceae (n = 26) isolated from dogs referred to a veterinary teaching hospital in Madrid. RESULTS AND DISCUSSION The results indicated the in vitro efficacy of PTSO/PTS against the tested bacterial strains, and 56.7% of Staphylococcus pseudintermedius and 53.8% of Enterobacteriaceae showed sensitivity to PTS and PTSO compared with classic antibiotics. In addition, 50% of S. pseudintermedius strains resistant to erythromycin, ibofloxacin, difloxacin and orbifloxacin and 50% of Enterobacteriaceae strains resistant to tetracycline and doxycycline were sensitive to PTS and PTSO. Although studies are needed to verify their efficacy in vivo, the combined use of PTS and PTSO exhibits promise in enhancing bacterial sensitivity against S. pseudintermedius and Enterobacteriaceae infections, providing a first insight into the potential of both compounds in veterinary practice.
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Affiliation(s)
- Alba Maroto-Tello
- Departamento de Microbiología, DMC Research Center, 18620 Granada, Spain; (A.M.-T.); (M.A.A.-C.); (A.B.)
| | - Tania Ayllón
- Facultad de Ciencias de la Salud, Universidad Alfonso X el Sabio, 28691 Madrid, Spain
- Departamento de Genética, Fisiología y Microbiología, Facultad de Ciencias Biológicas, Universidad Complutense, 28040 Madrid, Spain
| | | | - Juan José Ariza
- Departamento de Microbiología, Campus Fuente Nueva, Universidad de Granada, 18001 Granada, Spain;
| | - Silvia Penelo
- Servicio de Urgencias, Hospitalización y UCI, Hospital Clínico Veterinario Complutense, Universidad Complutense, 28040 Madrid, Spain
| | - Alberto Baños
- Departamento de Microbiología, DMC Research Center, 18620 Granada, Spain; (A.M.-T.); (M.A.A.-C.); (A.B.)
- Departamento de Microbiología, Campus Fuente Nueva, Universidad de Granada, 18001 Granada, Spain;
| | - Gustavo Ortiz-Díez
- Departamento de Medicina y Cirugía, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain;
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Silva BA, do Amarante VS, Xavier RGC, Colombo SA, da Silva TF, Brenig B, Aburjaile FF, de Carvalho Azevedo VA, Silva ROS. Characterization of ESBL/AmpC-producing extraintestinal Escherichia coli (ExPEC) in dogs treated at a veterinary hospital in Brazil. Res Vet Sci 2024; 166:105106. [PMID: 38086217 DOI: 10.1016/j.rvsc.2023.105106] [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: 01/31/2023] [Revised: 12/02/2023] [Accepted: 12/03/2023] [Indexed: 01/01/2024]
Abstract
The clinical aspects and lineages involved in Extraintestinal pathogenic Escherichia coli (ExPEC) infections in dogs remain largely unknown. In this study, we investigated the antimicrobial resistance and molecular structures of ExPECs isolated from infected dogs in Brazil. Samples were obtained from dogs (n = 42) with suspected extraintestinal bacterial infections. Phylogroup B2 was predominant (65.1%). No association was observed between the site of infection, phylogroups, or virulence factors. Almost half of the isolates (44.2%) were MDR, and 20.9% were extended-spectrum β-lactamase (ESBL)-positive. E. coli isolates that were resistant to fluoroquinolones (27.9%) were more likely to be MDR. The CTX-M-15 enzyme was predominant among the ESBL-producing strains, and seven sequence types were identified, including the high-risk clones ST44 and ST131. Single SNPs analysis confirmed the presence of two clonal transmissions. The present study showed a high frequency of ExPECs from phylogroup B2 infecting various sites and a high frequency of ESBL-producing strains that included STs frequently associated with human infection. This study also confirmed the nosocomial transmission of ESBL-producing E. coli, highlighting the need for further studies on the prevention and diagnosis of nosocomial infections in veterinary settings.
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Affiliation(s)
- Brendhal Almeida Silva
- Veterinary School, Federal University of Minas Gerais, Antônio Carlos Avenue, 6627, Belo Horizonte 31.270-901, MG, Brazil
| | - Victor Santos do Amarante
- Veterinary School, Federal University of Minas Gerais, Antônio Carlos Avenue, 6627, Belo Horizonte 31.270-901, MG, Brazil
| | - Rafael Gariglio Clark Xavier
- Veterinary School, Federal University of Minas Gerais, Antônio Carlos Avenue, 6627, Belo Horizonte 31.270-901, MG, Brazil
| | - Salene Angelini Colombo
- Veterinary School, Federal University of Minas Gerais, Antônio Carlos Avenue, 6627, Belo Horizonte 31.270-901, MG, Brazil
| | - Tales Fernando da Silva
- Veterinary School, Federal University of Minas Gerais, Antônio Carlos Avenue, 6627, Belo Horizonte 31.270-901, MG, Brazil
| | - Bertram Brenig
- Institute of Veterinary Medicine, University of Göttingen, Göttingen, Germany
| | - Flavia Figueira Aburjaile
- Veterinary School, Federal University of Minas Gerais, Antônio Carlos Avenue, 6627, Belo Horizonte 31.270-901, MG, Brazil
| | | | - Rodrigo Otávio Silveira Silva
- Veterinary School, Federal University of Minas Gerais, Antônio Carlos Avenue, 6627, Belo Horizonte 31.270-901, MG, Brazil.
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Schreiber A, Epstein SE, Byrne BA, Reagan KL. Survey of Bacterial Isolates and Their Antimicrobial Susceptibility Patterns from Dogs with Infective Endocarditis. Pathogens 2023; 12:1011. [PMID: 37623971 PMCID: PMC10458812 DOI: 10.3390/pathogens12081011] [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: 07/10/2023] [Revised: 07/29/2023] [Accepted: 07/31/2023] [Indexed: 08/26/2023] Open
Abstract
Infective endocarditis (IE) is a potentially fatal disease in dogs. Limited information exists regarding the characterization of bacterial isolates from dogs with IE. The objective of this study was to describe bacterial isolates associated with IE and their antimicrobial susceptibility patterns. A retrospective analysis of dogs with IE and bacterial isolates was performed, and antimicrobial susceptibility was interpreted using current veterinary cut points where available. The susceptibility rate was assessed for association with survival and previous antimicrobial administration. Fifty-one bacterial isolates were identified from 45 dogs, and 33 had antimicrobial susceptibility performed. Staphylococcus spp. (14/51; 27.5%) was the most common organism. Antimicrobials with the lowest susceptibility rate were ampicillin (19/26; 73%), doxycycline (16/22; 73%), and enrofloxacin (22/29; 76%) with 12/33 (36%) of isolates exhibiting multidrug resistance (MDR). Individual antimicrobial resistances and the MDR rate were not associated with a difference in survival rate. Bacterial isolates from dogs that had received fluoroquinolone antimicrobials in the month before diagnosis had a higher rate of non-intrinsic fluoroquinolones resistance (5/8;62.5%) compared to those that did not receive fluoroquinolones (2/21; 9.5%) (p = 0.03). Antimicrobial resistance and MDR phenotype were common in this study. Culture and antimicrobial susceptibility testing should be pursued in dogs with IE to help guide antimicrobial therapy.
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Affiliation(s)
- Alexander Schreiber
- VCA Animal Specialty Emergency Center, 1535 S Sepulveda Blvd, Los Angeles, CA 90025, USA;
| | - Steven E. Epstein
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, Davis, CA 95616, USA;
| | - Barbara A. Byrne
- Department of Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California-Davis, Davis, CA 95616, USA;
| | - Krystle L. Reagan
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California-Davis, Davis, CA 95615, USA
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Ortiz-Díez G, Mengíbar RL, Turrientes MC, Artigao MRB, Gallifa RL, Tello AM, Pérez CF, Santiago TA. Prevalence, incidence and risk factors for acquisition and colonization of extended-spectrum beta-lactamase- and carbapenemase-producing Enterobacteriaceae from dogs attended at a veterinary hospital in Spain. Comp Immunol Microbiol Infect Dis 2023; 92:101922. [PMID: 36509030 DOI: 10.1016/j.cimid.2022.101922] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 11/18/2022] [Accepted: 11/25/2022] [Indexed: 11/30/2022]
Abstract
The last 10 years have seen a progressive increase in antibiotic resistance rates in bacteria isolated from companion animals. Exposure of individuals to resistant bacteria from companion animals, such as extended-spectrum beta-lactamase- (ESBL) and carbapenemase- (CPE) producing Enterobacteriaceae, can be propitiated. Few studies evaluate the incidence and risk factors associated with colonization by multidrug-resistant bacteria in dogs. This work aims to estimate the prevalence, incidence and risk factors associated with colonization of ESBL-E and CPE-E in 44 canine patients hospitalized in a veterinary hospital. The antimicrobial susceptibility of Enterobacteriaceae strains was analyzed and the molecular detection of resistant genes was performed. A prevalence of 25.0% and an incidence of ESBL-E of 45.5% were observed in dogs colonized by Enterobacteriaceae at hospital admission and release, respectively. Escherichia coli, Klebsiella pneumoniae, Citrobacter koseri and Morganella morganii were identified as ESBL-producing bacterial species. Resistance genes were detected for ESBL-producing strains. No CPE isolates were obtained on the CPE-selective medium. The administration of corticosteroids prior to hospitalization and the presence of concomitant diseases were associated with colonization by these bacteria in dogs. Considering that one-quarter of the patients evaluated were colonized by ESBL-E, companion animals should be considered as potential transmission vehicles and ESBL-E reservoirs for humans. Special care should be taken in animals attended at veterinary hospitals, as the length of stay in the hospital could increase the risks.
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Affiliation(s)
- Gustavo Ortiz-Díez
- Hospital Clínico Veterinario, Universidad Alfonso X El Sabio, Madrid, Spain.
| | - Ruth Luque Mengíbar
- Hospital Clínico Veterinario, Universidad Alfonso X El Sabio, Madrid, Spain.
| | - María-Carmen Turrientes
- Servicio de Microbiología, Hospital Universitario Ramón y Cajal -IRYCIS-, Madrid, Spain; Centro de Investigación Biomédica en Red en Epidemiología y Salud Pública -CIBERESP-, Madrid, Spain.
| | | | - Raúl López Gallifa
- Hospital Clínico Veterinario, Universidad Alfonso X El Sabio, Madrid, Spain.
| | | | - Cristina Fernández Pérez
- Fundación Instituto para la Mejora de la Asistencia Sanitaria, Madrid, Spain; Servicio de Medicina Preventiva y Salud Pública, Complexo Hospitalario Universitario de Santiago, Santiago de Compostela, A Coruña, Spain.
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Wongtawan T, Narinthorn R, Sontigun N, Sansamur C, Petcharat Y, Fungwithaya P, Saengsawang P, Blackall PJ, Thomrongsuwannakij T. Characterizing the antimicrobial resistance profile of Escherichia coli found in sport animals (fighting cocks, fighting bulls, and sport horses) and soils from their environment. Vet World 2022; 15:2673-2680. [PMID: 36590125 PMCID: PMC9798048 DOI: 10.14202/vetworld.2022.2673-2680] [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: 06/13/2022] [Accepted: 10/13/2022] [Indexed: 11/27/2022] Open
Abstract
Background and Aim Antimicrobial resistance (AMR) is a significant threat to global health and development. Inappropriate antimicrobial drug use in animals cause AMR, and most studies focus on livestock because of the widespread use of antimicrobial medicines. There is a lack of studies on sports animals and AMR issues. This study aimed to characterize the AMR profile of E. coli found in sports animals (fighting cocks, fighting bulls, and sport horses) and soils from their environment. Materials and Methods Bacterial isolation and identification were conducted to identify E. coli isolates recovered from fresh feces that were obtained from fighting cocks (n = 32), fighting bulls (n = 57), sport horses (n = 33), and soils from those farms (n = 32) at Nakhon Si Thammarat. Antimicrobial resistance was determined using 15 tested antimicrobial agents - ampicillin (AM), amoxicillin-clavulanic acid, cephalexin (CN), cefalotin (CF), cefoperazone, ceftiofur, cefquinome, gentamicin, neomycin, flumequine (UB), enrofloxacin, marbofloaxacin, polymyxin B, tetracycline (TE), and sulfamethoxazole/trimethoprim (SXT). The virulence genes, AMR genes, and phylogenetic groups were also examined. Five virulence genes, iroN, ompT, hlyF, iss, and iutA, are genes determining the phylogenetic groups, chuA, cjaA, and tspE4C2, were identified. The AMR genes selected for detection were blaTEM and blaSHV for the beta-lactamase group; cml-A for phenicol; dhfrV for trimethoprim; sul1 and sul2 for sulfonamides; tetA, tetB, and tetC for TEs; and qnrA, qnrB, and qnrS for quinolones. Results The E. coli derived from sports animals were resistant at different levels to AM, CF, CN, UB, SXT, and TE. The AMR rate was overall higher in fighting cocks than in other animals, with significantly higher resistance to AM, CF, and TE. The highest AMR was found in fighting cocks, where 62.5% of their isolates were AM resistant. In addition, multidrug resistance was highest in fighting cocks (12.5%). One extended-spectrum beta-lactamase E. coli isolate was found in the soils, but none from animal feces. The phylogenetic analysis showed that most E. coli isolates were in Group B1. The E. coli isolates from fighting cocks had more virulence and AMR genes than other sources. The AMR genes found in 20% or more of the isolates were blaTEM (71.9%), qnrB (25%), qnrS (46.9%), and tetA (56.25%), whereas in the E. coli isolates collected from soils, the only resistance genes found in 20% or more of the isolates were blaTEM (30.8%), and tetA (23.1%). Conclusion Escherichia coli from fighting cock feces had significantly higher resistance to AM, CF, and TE than isolates from other sporting animals. Hence, fighting cocks may be a reservoir of resistant E. coli that can transfer to the environment and other animals and humans in direct contact with the birds or the birds' habitat. Programs for antimicrobial monitoring should also target sports animals and their environment.
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Affiliation(s)
- Tuempong Wongtawan
- Akkhraratchakumari Veterinary College, Walailak University, Thai Buri, Tha Sala, Nakhon Si Thammarat 80160, Thailand,Centre for One Health, Walailak University, Thai Buri, Tha Sala, Nakhon Si Thammarat 80160, Thailand,Excellence Centre for Melioidosis and other microorganisms, Walailak University, Thai Buri, Tha Sala, Nakhon Si Thammarat 80160, Thailand
| | - Ruethai Narinthorn
- Akkhraratchakumari Veterinary College, Walailak University, Thai Buri, Tha Sala, Nakhon Si Thammarat 80160, Thailand,Centre for One Health, Walailak University, Thai Buri, Tha Sala, Nakhon Si Thammarat 80160, Thailand
| | - Narin Sontigun
- Akkhraratchakumari Veterinary College, Walailak University, Thai Buri, Tha Sala, Nakhon Si Thammarat 80160, Thailand,Centre for One Health, Walailak University, Thai Buri, Tha Sala, Nakhon Si Thammarat 80160, Thailand,Excellence Centre for Melioidosis and other microorganisms, Walailak University, Thai Buri, Tha Sala, Nakhon Si Thammarat 80160, Thailand
| | - Chalutwan Sansamur
- Akkhraratchakumari Veterinary College, Walailak University, Thai Buri, Tha Sala, Nakhon Si Thammarat 80160, Thailand,Centre for One Health, Walailak University, Thai Buri, Tha Sala, Nakhon Si Thammarat 80160, Thailand
| | - Yotsapat Petcharat
- Akkhraratchakumari Veterinary College, Walailak University, Thai Buri, Tha Sala, Nakhon Si Thammarat 80160, Thailand
| | - Punpichaya Fungwithaya
- Akkhraratchakumari Veterinary College, Walailak University, Thai Buri, Tha Sala, Nakhon Si Thammarat 80160, Thailand,Centre for One Health, Walailak University, Thai Buri, Tha Sala, Nakhon Si Thammarat 80160, Thailand,Excellence Centre for Melioidosis and other microorganisms, Walailak University, Thai Buri, Tha Sala, Nakhon Si Thammarat 80160, Thailand
| | - Phirabhat Saengsawang
- Akkhraratchakumari Veterinary College, Walailak University, Thai Buri, Tha Sala, Nakhon Si Thammarat 80160, Thailand,Centre for One Health, Walailak University, Thai Buri, Tha Sala, Nakhon Si Thammarat 80160, Thailand
| | - Patrick J. Blackall
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia 4067, Australia
| | - Thotsapol Thomrongsuwannakij
- Akkhraratchakumari Veterinary College, Walailak University, Thai Buri, Tha Sala, Nakhon Si Thammarat 80160, Thailand,Centre for One Health, Walailak University, Thai Buri, Tha Sala, Nakhon Si Thammarat 80160, Thailand,Corresponding author: Thotsapol Thomrongsuwannakij, e-mail: Co-authors: TW: , RN: , NS: , CS: , YP: , PF: , PS: , PJB:
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Prevalence and Molecular Characterization of Extended-Spectrum β-Lactamase Producing Enterobacterales in Healthy Community Dogs in Israel. Antibiotics (Basel) 2022; 11:antibiotics11081069. [PMID: 36009938 PMCID: PMC9404856 DOI: 10.3390/antibiotics11081069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 08/01/2022] [Accepted: 08/03/2022] [Indexed: 11/17/2022] Open
Abstract
Background: antimicrobial resistance is a global problem in human and veterinary medicine. We aimed to investigate the extended spectrum β-lactamase-producing Enterobacterales (ESBL-PE) gut colonization in healthy community dogs in Israel. Methods: Rectal swabs were sampled from 145 healthy dogs, enriched, plated on selective plates, sub-cultured to obtain pure cultures, and ESBL production was confirmed. Bacterial species and antibiotic susceptibility profiles were identified. WGS was performed on all of the ESBL-PE isolates and their resistomes were identified in silico. Owners’ questionnaires were collected for risk factor analysis. Results: ESBL-PE gut colonization rate was 6.2% (n = 9/145, 95% CI 2.9–11.5). Overall, ten isolates were detected (one dog had two isolates); the main species was Escherichia coli (eight isolates), belonging to diverse phylogenetic groups—B1, A and C. Two isolates were identified as Citrobacter braakii, and C. portucalensis. A phylogenetic analysis indicated that all of the isolates were genetically unrelated and sporadic. The isolates possessed diverse ESBL genes and antibiotic-resistance gene content, suggesting independent ESBL spread. In a multivariable risk factor analysis, coprophagia was identified as a risk factor for ESBL-PE gut colonization (p = 0.048, aOR = 4.408, 95% CI 1.014–19.169). Conclusions: healthy community dogs may be colonized with ESBL-PE MDR strains, some of which were previously reported in humans, that carry wide and diverse resistomes and may serve as a possible source for AMR.
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Mounsey O, Wareham K, Hammond A, Findlay J, Gould VC, Morley K, Cogan TA, Turner KM, Avison MB, Reyher KK. Evidence that faecal carriage of resistant Escherichia coli by 16-week-old dogs in the United Kingdom is associated with raw feeding. One Health 2022; 14:100370. [PMID: 35146110 PMCID: PMC8802057 DOI: 10.1016/j.onehlt.2022.100370] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 12/11/2021] [Accepted: 01/11/2022] [Indexed: 12/02/2022] Open
Abstract
We report a survey (August 2017 to March 2018) and risk factor analysis of faecal carriage of antibacterial-resistant (ABR) Escherichia coli in 223 16-week-old dogs in the United Kingdom. Raw feeding was associated with the presence of fluoroquinolone-resistant (FQ-R) E. coli and those resistant to tetracycline, amoxicillin, and streptomycin, but not to cefalexin. Whole genome sequencing of 36 FQ-R E. coli isolates showed a wide range of sequence types (STs), with almost exclusively mutational FQ-R dominated by ST744 and ST162. Comparisons between E. coli isolates from puppies known to be located within a 50 × 50 km region with those isolated from human urinary tract infections (isolated in parallel in the same region) identified an ST744 FQ-R lineage that was carried by one puppy and caused one urinary tract infection. Accordingly, we conclude that raw feeding is associated with carriage of ABR E. coli in dogs even at 16 weeks of age and that bacteria carried by puppies are shared with humans. We therefore suggest that those who feed their dogs raw meat seriously consider the potential ABR-transmission threat their pet may become as a result and deploy appropriate hygiene practices in mitigation.
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van den Bunt G, Fluit AC, Spaninks MP, Timmerman AJ, Geurts Y, Kant A, Scharringa J, Mevius D, Wagenaar JA, Bonten MJM, van Pelt W, Hordijk J. Faecal carriage, risk factors, acquisition and persistence of ESBL-producing Enterobacteriaceae in dogs and cats and co-carriage with humans belonging to the same household. J Antimicrob Chemother 2021; 75:342-350. [PMID: 31711228 PMCID: PMC6966097 DOI: 10.1093/jac/dkz462] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 09/06/2019] [Accepted: 10/10/2019] [Indexed: 11/21/2022] Open
Abstract
Background ESBL-producing Enterobacteriaceae (ESBL-E) are observed in many reservoirs. Pets might play an important role in the dissemination of ESBL-E to humans since they live closely together. Objectives To identify prevalence, risk factors, molecular characteristics, persistence and acquisition of ESBL-E in dogs and cats, and co-carriage in human–pet pairs belonging to the same household. Methods In a nationwide study, one person per household was randomly invited to complete a questionnaire and to submit a faecal sample. Dog and cat owners were invited to also submit a faecal sample from their pet. Repeated sampling after 1 and 6 months was performed in a subset. ESBL-E were obtained through selective culture and characterized by WGS. Logistic regression analyses and random forest models were performed to identify risk factors. Results The prevalence of ESBL-E carriage in these cohorts was 3.8% (95% CI: 2.7%–5.4%) for human participants (n=550), 10.7% (95% CI: 8.3%–13.7%) for dogs (n=555) and 1.4% (95% CI: 0.5%–3.8%) for cats (n=285). Among animals, blaCTX-M-1 was most abundant, followed by blaCTX-M-15. In dogs, persistence of carriage was 57.1% at 1 month and 42.9% at 6 months. Eating raw meat [OR: 8.8, 95% CI: 4.7–16.4; population attributable risk (PAR): 46.5%, 95% CI: 41.3%–49.3%] and dry food (OR: 0.2, 95% CI: 0.1–0.5; PAR: 56.5%, 95% CI: 33.2%–66.6%) were predictors for ESBL-E carriage in dogs. Human–dog co-carriage was demonstrated in five households. Human–cat co-carriage was not observed. Conclusions ESBL-E prevalence was higher in dogs than in humans and lowest in cats. The main risk factor for ESBL-E carriage was eating raw meat. Co-carriage in dogs and household members was uncommon.
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Affiliation(s)
- G van den Bunt
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands.,Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - A C Fluit
- Department of Medical Microbiology, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands
| | - M P Spaninks
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - A J Timmerman
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Y Geurts
- Department of Bacteriology and Epidemiology, Wageningen Bioveterinary Research, Lelystad, The Netherlands
| | - A Kant
- Department of Bacteriology and Epidemiology, Wageningen Bioveterinary Research, Lelystad, The Netherlands
| | - J Scharringa
- Department of Medical Microbiology, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands
| | - D Mevius
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.,Department of Bacteriology and Epidemiology, Wageningen Bioveterinary Research, Lelystad, The Netherlands
| | - J A Wagenaar
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.,Department of Bacteriology and Epidemiology, Wageningen Bioveterinary Research, Lelystad, The Netherlands
| | - M J M Bonten
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands.,Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands.,Department of Medical Microbiology, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands
| | - W van Pelt
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - J Hordijk
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
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11
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Carvalho I, Safia Chenouf N, Cunha R, Martins C, Pimenta P, Pereira AR, Martínez-Álvarez S, Ramos S, Silva V, Igrejas G, Torres C, Poeta P. Antimicrobial Resistance Genes and Diversity of Clones among ESBL- and Acquired AmpC-Producing Escherichia coli Isolated from Fecal Samples of Healthy and Sick Cats in Portugal. Antibiotics (Basel) 2021; 10:antibiotics10030262. [PMID: 33807601 PMCID: PMC8001562 DOI: 10.3390/antibiotics10030262] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 02/28/2021] [Accepted: 03/02/2021] [Indexed: 12/26/2022] Open
Abstract
The aim of the study was to analyze the mechanisms of resistance in extended-spectrum beta-lactamase (ESBL)- and acquired AmpC (qAmpC)-producing Escherichia coli isolates from healthy and sick cats in Portugal. A total of 141 rectal swabs recovered from 98 sick and 43 healthy cats were processed for cefotaxime-resistant (CTXR) E. coli recovery (in MacConkey agar supplemented with 2 µg/mL cefotaxime). The matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) method was used for E. coli identification and antimicrobial susceptibility was performed by a disk diffusion test. The presence of resistance/virulence genes was tested by PCR sequencing. The phylogenetic typing and multilocus sequence typing (MLST) were determined by specific PCR sequencing. CTXRE. coli isolates were detected in seven sick and six healthy cats (7.1% and 13.9%, respectively). Based on the synergy tests, 11 of 13 CTXRE. coli isolates (one/sample) were ESBL-producers (ESBL total rate: 7.8%) carrying the following ESBL genes: blaCTX-M-1 (n = 3), blaCTX-M-15 (n = 3), blaCTX-M-55 (n = 2), blaCTX-M-27 (n = 2) and blaCTX-M-9 (n = 1). Six different sequence types were identified among ESBL-producers (sequence type/associated ESBLs): ST847/CTX-M-9, CTX-M-27, CTX-M-1; ST10/CTX-M-15, CTX-M-27; ST6448/CTX-M-15, CTX-M-55; ST429/CTX-M-15; ST101/CTX-M-1 and ST40/CTX-M-1. Three of the CTXR isolates were CMY-2-producers (qAmpC rate: 2.1%); two of them were ESBL-positive and one ESBL-negative. These isolates were typed as ST429 and ST6448 and were obtained in healthy or sick cats. The phylogenetic groups A/B1/D/clade 1 were detected among ESBL- and qAmpC-producing isolates. Cats are carriers of qAmpC (CMY-2)- and ESBL-producing E. coli isolates (mostly of variants of CTX-M group 1) of diverse clonal lineages, which might represent a public health problem due to the proximity of cats with humans regarding a One Health perspective.
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Affiliation(s)
- Isabel Carvalho
- Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal; (I.C.); (V.S.)
- Department of Genetics and Biotechnology, UTAD, 5000-801 Vila Real, Portugal;
- Functional Genomics and Proteomics Unit, UTAD, 5000-801 Vila Real, Portugal
- Laboratory Associated for Green Chemistry (LAQV-REQUIMTE), New University of Lisbon, 2829-516 Monte da Caparica, Portugal
- Area Biochemistry and Molecular Biology, University of La Rioja, 26006 Logroño, Spain; (N.S.C.); (S.M.-Á.); (C.T.)
| | - Nadia Safia Chenouf
- Area Biochemistry and Molecular Biology, University of La Rioja, 26006 Logroño, Spain; (N.S.C.); (S.M.-Á.); (C.T.)
- Laboratory of Exploration and Valuation of the Steppe Ecosystem, University of Djelfa, Djelfa 17000, Algeria
| | - Rita Cunha
- Hospital Veterinário de São Bento, 1200-822 Lisboa, Portugal;
| | - Carla Martins
- Clínica Veterinária do Vouga, 3740-253 Sever do Vouga, Portugal;
| | - Paulo Pimenta
- Hospital Veterinário de Trás-os-Montes, 5000-056 Vila Real, Portugal;
| | | | - Sandra Martínez-Álvarez
- Area Biochemistry and Molecular Biology, University of La Rioja, 26006 Logroño, Spain; (N.S.C.); (S.M.-Á.); (C.T.)
| | - Sónia Ramos
- VetRedondo, Consultório Veterinário de Monte Redondo Unipessoal Lda, Monte Redondo, 2425-618 Leiria, Portugal;
| | - Vanessa Silva
- Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal; (I.C.); (V.S.)
- Department of Genetics and Biotechnology, UTAD, 5000-801 Vila Real, Portugal;
- Functional Genomics and Proteomics Unit, UTAD, 5000-801 Vila Real, Portugal
- Laboratory Associated for Green Chemistry (LAQV-REQUIMTE), New University of Lisbon, 2829-516 Monte da Caparica, Portugal
| | - Gilberto Igrejas
- Department of Genetics and Biotechnology, UTAD, 5000-801 Vila Real, Portugal;
- Functional Genomics and Proteomics Unit, UTAD, 5000-801 Vila Real, Portugal
- Laboratory Associated for Green Chemistry (LAQV-REQUIMTE), New University of Lisbon, 2829-516 Monte da Caparica, Portugal
| | - Carmen Torres
- Area Biochemistry and Molecular Biology, University of La Rioja, 26006 Logroño, Spain; (N.S.C.); (S.M.-Á.); (C.T.)
| | - Patrícia Poeta
- Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal; (I.C.); (V.S.)
- Laboratory Associated for Green Chemistry (LAQV-REQUIMTE), New University of Lisbon, 2829-516 Monte da Caparica, Portugal
- Correspondence: ; Tel.: +351-259350466; Fax: +351-259350629
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12
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High β-lactam resistance in Gram-negative bacteria associated with kennel cough and cat flu in Egypt. Sci Rep 2021; 11:3347. [PMID: 33558604 PMCID: PMC7870956 DOI: 10.1038/s41598-021-82061-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 01/12/2021] [Indexed: 02/06/2023] Open
Abstract
Antimicrobial resistance within pets has gained worldwide attention due to pets close contact with humans. This report examined at the molecular level, the antimicrobial resistance mechanisms associated with kennel cough and cat flu. 1378 pets in total were assessed for signs of respiratory infection, and nasal and conjunctival swabs were collected across 76 diseased animals. Phenotypically, 27% of the isolates were characterized by multidrug resistance and possessed high levels of resistance rates to β-lactams. Phenotypic ESBLs/AmpCs production were identified within 40.5% and 24.3% of the isolates, respectively. Genotypically, ESBL- and AmpC-encoding genes were detected in 33.8% and 10.8% of the isolates, respectively, with blaSHV comprising the most identified ESBL, and blaCMY and blaACT present as the AmpC with the highest levels. qnr genes were identified in 64.9% of the isolates, with qnrS being the most prevalent (44.6%). Several antimicrobial resistance determinants were detected for the first time within pets from Africa, including blaCTX-M-37, blaCTX-M-156, blaSHV-11, blaACT-23, blaACT25/31, blaDHA-1, and blaCMY-169. Our results revealed that pets displaying symptoms of respiratory illness are potential sources for pathogenic microbes possessing unique resistance mechanisms which could be disseminated to humans, thus leading to the development of severe untreatable infections in these hosts.
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13
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Manchester AC, Dogan B, Guo Y, Simpson KW. Escherichia coli-associated granulomatous colitis in dogs treated according to antimicrobial susceptibility profiling. J Vet Intern Med 2020; 35:150-161. [PMID: 33321554 PMCID: PMC7848323 DOI: 10.1111/jvim.15995] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 11/23/2020] [Accepted: 12/01/2020] [Indexed: 12/18/2022] Open
Abstract
Background Eradication of intramucosal Escherichia coli correlates with remission of periodic acid‐Schiff‐positive E coli‐associated granulomatous colitis (GC). Treatment failures attributed to multidrug resistant (MDR) bacteria necessitate alternative approaches. Hypothesis/objectives Determine clinical outcome of E coli‐associated GC in dogs treated based on antimicrobial susceptibility profiling and characterize E coli phylogeny and resistance mechanisms. Animals Twenty Boxers and 4 French Bulldogs with E coli‐associated GC. Methods Culture, antimicrobial susceptibility profiling, and molecular characterization of E coli were performed and response to treatment was evaluated. Results Initial biopsy sample culture yielded fluoroquinolone‐sensitive (FQ‐S) E coli from 9/24 dogs and fluoroquinolone‐resistant (FQ‐R) E coli from 15/24. All but 1 FQ‐R E coli were MDR with susceptibility to macrophage‐penetrating antimicrobials restricted to carbapenems in 13/15 dogs. Of 22/24 treated based on susceptibility profiling, 8/9 FQ‐S dogs had complete initial clinical response (CR) during fluoroquinolone (FQ) treatment, whereas 9/13 FQ‐R dogs had complete or partial response (PR) during meropenem or doxycycline treatment. In 5/9 FQ‐S and 12/13 FQ‐R dogs with follow‐up ≥3 months, CR was sustained in 5/5 FQ‐S (median, 25 months; range, 4‐46) whereas 6/12 FQ‐R had long‐term CR (median, 59 months; range 15‐102), 4/12 PR (median, 19 months; range, 5‐65), and 2/12 had no response (NR). Four dogs with long‐term follow‐up died within 4 years of diagnosis, including 2 euthanized for refractory colitis. Escherichia coli were genetically diverse. Fluoroquinolone resistance was associated with mutations in gyrA and parC, with plasmid‐mediated resistance less common. Conclusions and Clinical Importance Antimicrobial treatment guided by susceptibility profiling was associated with positive long‐term outcomes in >80% of cases. Fluoroquinolone‐resistance was widespread and not clonal. Further study is required to optimize treatment for dogs with MDR E coli‐associated GC.
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Affiliation(s)
| | - Belgin Dogan
- Cornell University College of Veterinary Medicine, Ithaca, New York, USA
| | - Yongli Guo
- Cornell University College of Veterinary Medicine, Ithaca, New York, USA
| | - Kenneth W Simpson
- Cornell University College of Veterinary Medicine, Ithaca, New York, USA
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14
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Rodríguez-González MJ, Jiménez-Pearson MA, Duarte F, Poklepovich T, Campos J, Araya-Sánchez LN, Chirino-Trejo M, Barquero-Calvo E. Multidrug-Resistant CTX-M and CMY-2 Producing Escherichia coli Isolated from Healthy Household Dogs from the Great Metropolitan Area, Costa Rica. Microb Drug Resist 2020; 26:1421-1428. [PMID: 33085572 PMCID: PMC7698996 DOI: 10.1089/mdr.2020.0146] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Objective: This study aimed to determine the prevalence of fecal carriage of antibiotic-resistant Escherichia coli of healthy household dogs with an emphasis on extended-spectrum β-lactamases (ESBL), AmpC-type β-lactamases and resistance to quinolones. Materials and Methods: Rectal swabs were collected from 74 dogs without any clinical evidence of gastrointestinal disease. Samples were cultured on MacConkey agar plates and MacConkey supplemented with 2 μg/mL cefotaxime or 5 μg/mL ciprofloxacin. Isolates were identified with Vitek 2 Compact and susceptibility testing performed by Kirby Bauer disk diffusion method. Minimal inhibitory concentration (MIC) was done on isolates resistant to cefotaxime, ciprofloxacin, and nalidixic acid. PCR amplification was performed to detect CTX-M and CMY-2. Isolates positive for CTX-M and/or CMY-2 were selected for whole-genome sequencing. Results: Multiresistance was detected in 56% of the isolates. A high percentage of resistance was detected for cefazolin (63%), ampicillin (54%), streptomycin (49%), nalidixic acid (42%) and tetracycline (38%). The MIC50 and MIC90 for isolates resistant to cefotaxime (24%) was determined as 16 and >250 μg/mL, respectively; for ciprofloxacin (18%), 125 and 250 μg/mL, respectively. ESBL (CTX-M type) and AmpC (CMY-2 type) were detected in 6 (7.1%) and 14 (19%) of the isolates, respectively. Whole-genome sequence analysis showed high genetic diversity in most of the isolates and a large variety of resistance mechanisms, including mobile genetic elements. Conclusion: The frequency of multidrug-resistant E. coli is worrying, mainly because of the presence of many isolates producing ESBL and AmpC β-lactamases. Based on the “One Health” concept, considering the relationships between animals, humans, and the environment, these data support the notion that companion animals are important reservoirs of multidrug-resistant bacteria.
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Affiliation(s)
| | | | - Francisco Duarte
- Instituto Costarricense de Investigación y Enseñanza en Nutrición y Salud, San José, Costa Rica
| | - Tomás Poklepovich
- Plataforma Genómica y Bioinformática-Genomic and Bioinformatics Platform INEI-ANLIS "Dr. Carlos G. Malbrán, Buenos Aires, Argentina
| | - Josefina Campos
- Plataforma Genómica y Bioinformática-Genomic and Bioinformatics Platform INEI-ANLIS "Dr. Carlos G. Malbrán, Buenos Aires, Argentina
| | | | - Manuel Chirino-Trejo
- Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Elías Barquero-Calvo
- Programa de Investigación en Enfermedades Tropicales, Escuela de Medicina Veterinaria, UNA, Heredia, Costa Rica
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15
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Carvalho I, Tejedor-Junco MT, González-Martín M, Corbera JA, Suárez-Pérez A, Silva V, Igrejas G, Torres C, Poeta P. Molecular diversity of Extended-spectrum β-lactamase-producing Escherichia coli from vultures in Canary Islands. ENVIRONMENTAL MICROBIOLOGY REPORTS 2020; 12:540-547. [PMID: 32755023 DOI: 10.1111/1758-2229.12873] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 08/01/2020] [Indexed: 06/11/2023]
Abstract
Antimicrobial resistance among isolates from wild animals is increasingly reported. Extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae, and particularly Escherichia coli, have spread worldwide as one of the most common multidrug-resistant organisms. The aim of this study was to determine the carriage rate of ESBL-producing E. coli isolates and their genetic characteristics in wild vultures from the Canary Islands. Faecal samples were collected from 22 apparently healthy free-ranging (wild) vulture chicks from Lanzarote and Fuerteventura (Canary Islands) during July 2019. They were seeded in MacConkey agar supplemented with cefotaxime (2 μg ml-1 ). Colonies with typical morphology of E. coli were identified by MALDI-TOF-MS. Antimicrobial susceptibility was done by disk diffusion. Phenotypic detection of ESBL was performed by double-disk tests. The presence of blaCTX-M , blaSHV , blaTEM , blaKPC and blaOXA-48 genes, as well as mcr-1 (colistin resistance), tetA/tetB and int1 gene, was tested by PCR/sequencing. Phylogenetic groups and multilocus sequence typing (MLST) were determined by PCR/sequencing. ESBL-producing E. coli isolates were detected in 5/22 tested animals (22.7%), and all isolates (one/animal) carried blaCTX-M genes: blaCTX-M-15 (n = 3) and blaCTX-M-55 (n = 2). ESBL-positive isolates were ascribed to phylogenetic group D (two isolates), B1 (two isolates) and A (one isolate), and five sequence types were detected (ST/phylogenetic-group/ESBL): ST515/B1/CTX-M-15, ST1290/A/CTX-M-15, ST38/D/CTX-M-15, ST457/D/CTX-M-55 and ST6448/B1 /CTX-M-55; this suggests a genetic diversity among these isolates. Three CTX-M-15-producing isolates contained the blaTEM gene and one the tetA gene. To our knowledge, this appears to be the first report of ESBL-producing E. coli in vulture chicks from the Canary Islands.
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Affiliation(s)
- Isabel Carvalho
- Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Functional Genomics and Proteomics Unit, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Laboratory Associated for Green Chemistry (LAQV-REQUIMTE), New University of Lisbon, Monte da Caparica, Portugal
- Area Biochemistry and Molecular Biology, University of La Rioja, Logroño, Spain
| | - María Teresa Tejedor-Junco
- Research Institute of Biomedical and Health Sciences, University of Las Palmas de Gran Canaria, Canary Islands, Spain
- Department of Clinical Sciences, University of Las Palmas de Gran Canaria, Canary Islands, Spain
| | - Margarita González-Martín
- Research Institute of Biomedical and Health Sciences, University of Las Palmas de Gran Canaria, Canary Islands, Spain
- Department of Clinical Sciences, University of Las Palmas de Gran Canaria, Canary Islands, Spain
| | - Juan Alberto Corbera
- Research Institute of Biomedical and Health Sciences, University of Las Palmas de Gran Canaria, Canary Islands, Spain
- Department of Animal Pathology, Veterinary School, University of Las Palmas de Gran Canaria, Canary Islands, Spain
| | - Alejandro Suárez-Pérez
- Department of Animal Pathology, Veterinary School, University of Las Palmas de Gran Canaria, Canary Islands, Spain
| | - Vanessa Silva
- Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Functional Genomics and Proteomics Unit, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Laboratory Associated for Green Chemistry (LAQV-REQUIMTE), New University of Lisbon, Monte da Caparica, Portugal
| | - Gilberto Igrejas
- Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Functional Genomics and Proteomics Unit, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Laboratory Associated for Green Chemistry (LAQV-REQUIMTE), New University of Lisbon, Monte da Caparica, Portugal
| | - Carmen Torres
- Area Biochemistry and Molecular Biology, University of La Rioja, Logroño, Spain
| | - Patrícia Poeta
- Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- Laboratory Associated for Green Chemistry (LAQV-REQUIMTE), New University of Lisbon, Monte da Caparica, Portugal
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16
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Michael A, Kelman T, Pitesky M. Overview of Quantitative Methodologies to Understand Antimicrobial Resistance via Minimum Inhibitory Concentration. Animals (Basel) 2020; 10:ani10081405. [PMID: 32806615 PMCID: PMC7459578 DOI: 10.3390/ani10081405] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 08/05/2020] [Accepted: 08/07/2020] [Indexed: 01/07/2023] Open
Abstract
Simple Summary An emerging threat to human and food animal health is the development of antimicrobial resistance in bacteria associated with food animals. One of the primary tools for assessing resistance levels and monitoring for changes in expressed resistance is the use of minimum inhibitory concentration tests, which expose bacterial isolates to a series of dilutions of an antimicrobial agent to identify the lowest concentration of the antimicrobial that effectively prevents bacterial growth. These tests produce a minimum inhibitory value that falls within a range of concentrations instead of an exact value, a process known as censoring. Analysis of censored data is complex and careful consideration of methods of analysis is necessary. The use of regression methods such as logistic regression that divide the data into two or three categories is relatively easy to implement but may not detect important changes in the distributions of data that occur within the categories. Models that do not simplify the data may be more complex but may detect potentially relevant changes missed when the data is categorized. As a result, the analysis of minimum inhibitory concentration data requires careful consideration to identify the appropriate model for the purpose of the study. Abstract The development of antimicrobial resistance (AMR) represents a significant threat to humans and food animals. The use of antimicrobials in human and veterinary medicine may select for resistant bacteria, resulting in increased levels of AMR in these populations. As the threat presented by AMR increases, it becomes critically important to find methods for effectively interpreting minimum inhibitory concentration (MIC) tests. Currently, a wide array of techniques for analyzing these data can be found in the literature, but few guidelines for choosing among them exist. Here, we examine several quantitative techniques for analyzing the results of MIC tests and discuss and summarize various ways to model MIC data. The goal of this review is to propose important considerations for appropriate model selection given the purpose and context of the study. Approaches reviewed include mixture models, logistic regression, cumulative logistic regression, and accelerated failure time–frailty models. Important considerations in model selection include the objective of the study (e.g., modeling MIC creep vs. clinical resistance), degree of censoring in the data (e.g., heavily left/right censored vs. primarily interval censored), and consistency of testing parameters (e.g., same range of concentrations tested for a given antibiotic).
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Affiliation(s)
- Alec Michael
- Department of Population Health and Reproduction, School of Veterinary Medicine, UC Davis, 1089 Veterinary Medicine Dr., VM3B, Davis, CA 95616, USA;
- Correspondence:
| | - Todd Kelman
- Department of Population Health and Reproduction, School of Veterinary Medicine, UC Davis, 1089 Veterinary Medicine Dr., VM3B, Davis, CA 95616, USA;
| | - Maurice Pitesky
- Department of Population Health and Reproduction, School of Veterinary Medicine-Cooperative Extension, UC Davis, 1089 Veterinary Medicine Dr., VM3B, Davis, CA 95616, USA;
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17
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Sevilla E, Mainar-Jaime RC, Moreno B, Martín-Burriel I, Morales M, Andrés-Lasheras S, Chirino-Trejo M, Badiola JJ, Bolea R. Antimicrobial resistance among canine enteric Escherichia coli isolates and prevalence of attaching-effacing and extraintestinal pathogenic virulence factors in Spain. Acta Vet Hung 2020; 68:1-7. [PMID: 32384068 DOI: 10.1556/004.2020.00013] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 11/17/2019] [Indexed: 11/19/2022]
Abstract
The aim of this study was to estimate the prevalence of antimicrobial resistance (AMR) in Escherichia coli from a dog population in Spain and assess specific virulence factors. Susceptibility to 22 antimicrobials was tested along with the production of extended-spectrum β-lactamases (ESBLs) and AmpC in faecal isolates from 100 dogs. Virulence-related genes associated with attaching and effacing E. coli (eae, Stx1, Stx2) and extraintestinal pathogenic E. coli - ExPEC - (papC, hlyA and cnf1) were detected by PCR. At least one kind of AMR was observed in 73% of the isolates. The highest prevalences corresponded to penicillin (45%), aminoglycoside (40%) and non-extended spectrum cephalosporin (39%) classes. Multidrug resistance (MDR) was observed in 53.4% of the resistant isolates. No resistance to colistin was found. Production of ESBL/AmpC enzymes was detected in 5% of E. coli. Shiga toxin-producing E. coli were not observed, enteropathogenic E. coli were identified in only 12% of them, and ExPEC were found in 25%. Dog faeces can be a source of E. coli strains potentially presenting a threat to humans through their virulence factors or AMR. The non-hygienic keeping of animals may increase the risk of colonisation of such pathogens in humans.
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Affiliation(s)
- Eloisa Sevilla
- 1Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón – IA2 – (Universidad de Zaragoza–CITA), Zaragoza, 50013, Spain
| | - Raúl C. Mainar-Jaime
- 1Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón – IA2 – (Universidad de Zaragoza–CITA), Zaragoza, 50013, Spain
| | - Bernardino Moreno
- 1Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón – IA2 – (Universidad de Zaragoza–CITA), Zaragoza, 50013, Spain
- 2Centro de Encefalopatías y Enfermedades Transmisibles Emergentes (CEETE), Facultad de Veterinaria, Universidad de Zaragoza, Zaragoza, Spain
| | - Inmaculada Martín-Burriel
- 3Laboratorio de Genética Bioquímica (LAGENBIO), Facultad de Veterinaria, Instituto Agroalimentario de Aragón – IA2 – (Universidad de Zaragoza–CITA), Zaragoza, Spain
| | - Mariano Morales
- 1Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón – IA2 – (Universidad de Zaragoza–CITA), Zaragoza, 50013, Spain
| | - Sara Andrés-Lasheras
- 4Agriculture and Agri-Food Canada, Lethbridge Research and Development Centre, Lethbridge, Canada
| | - Manuel Chirino-Trejo
- 5Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Juan J. Badiola
- 1Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón – IA2 – (Universidad de Zaragoza–CITA), Zaragoza, 50013, Spain
- 2Centro de Encefalopatías y Enfermedades Transmisibles Emergentes (CEETE), Facultad de Veterinaria, Universidad de Zaragoza, Zaragoza, Spain
| | - Rosa Bolea
- 1Departamento de Patología Animal, Facultad de Veterinaria, Instituto Agroalimentario de Aragón – IA2 – (Universidad de Zaragoza–CITA), Zaragoza, 50013, Spain
- 2Centro de Encefalopatías y Enfermedades Transmisibles Emergentes (CEETE), Facultad de Veterinaria, Universidad de Zaragoza, Zaragoza, Spain
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Dupouy V, Abdelli M, Moyano G, Arpaillange N, Bibbal D, Cadiergues MC, Lopez-Pulin D, Sayah-Jeanne S, de Gunzburg J, Saint-Lu N, Gonzalez-Zorn B, Andremont A, Bousquet-Mélou A. Prevalence of Beta-Lactam and Quinolone/Fluoroquinolone Resistance in Enterobacteriaceae From Dogs in France and Spain-Characterization of ESBL/pAmpC Isolates, Genes, and Conjugative Plasmids. Front Vet Sci 2019; 6:279. [PMID: 31544108 PMCID: PMC6730528 DOI: 10.3389/fvets.2019.00279] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 08/07/2019] [Indexed: 01/01/2023] Open
Abstract
Quantitative data on fecal shedding of antimicrobial-resistant bacteria are crucial to assess the risk of transmission from dogs to humans. Our first objective was to investigate the prevalence of quinolone/fluoroquinolone-resistant and beta-lactam-resistant Enterobacteriaceae in dogs in France and Spain. Due to the particular concern about possible transmission of extended-spectrum cephalosporin (ESC)-resistant isolates from dogs to their owners, we characterized the ESBL/pAmpC producers collected from dogs. Rectal swabs from 188 dogs, without signs of diarrhea and that had not received antimicrobials for 4 weeks before the study, were quantified for total and resistant Enterobacteriaceae on selective media alone or containing relevant antibiotic concentrations. Information that might explain antibiotic resistance was collected for each dog. Extended-spectrum cephalosporin-resistant isolates were subjected to bacterial species identification (API20E), genetic lineage characterization (MLST), ESBL/pAmpC genes identification (sequencing), and plasmid characterization (pMLST). Regarding beta-lactam resistance, amoxicillin- (AMX) and cefotaxime- (CTX) resistant Enterobacteriaceae were detected in 70 and 18% of the dogs, respectively, whereas for quinolone/fluoroquinolone-resistance, Nalidixic acid- (NAL) and ciprofloxacin- (CIP) resistant Enterobacteriaceae were detected in 36 and 18% of the dogs, respectively. Medical rather than preventive consultation was a risk marker for the presence of NAL and CIP resistance. CTX resistance was mainly due to a combination of specific ESBL/pAmpC genes and particular conjugative plasmids already identified in human patients: bla CTX-M-1/IncI1/ST3 (n = 4), bla CMY-2/IncI1/ST12 (n = 2), and bla CTX-M-15/IncI1/ST31 (n = 1). bla SHV-12 (n = 3) was detected in various plasmid lineages (InI1/ST3, IncI1/ST26, and IncFII). ESBL/pAmpC plasmids were located in different genetic lineages of E. coli, with the exception of two strains in France (ST6998) and two in Spain (ST602). Our study highlights dogs as a potential source of Q/FQ-resistant and ESBL/pAmpC-producing bacteria that might further disseminate to humans, and notably a serious risk of future acquisition of CTX-M-1 and CMY-2 plasmids by the owners of dogs.
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Affiliation(s)
| | | | - Gabriel Moyano
- Departamento de Sanidad Animal, Facultad de Veterinaria y Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense de Madrid, Madrid, Spain
| | | | - Delphine Bibbal
- InTheRes, Université de Toulouse, INRA, ENVT, Toulouse, France
| | | | | | | | | | | | - Bruno Gonzalez-Zorn
- Departamento de Sanidad Animal, Facultad de Veterinaria y Centro de Vigilancia Sanitaria Veterinaria (VISAVET), Universidad Complutense de Madrid, Madrid, Spain
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Hardefeldt L, Nielsen T, Crabb H, Gilkerson J, Squires R, Heller J, Sharp C, Cobbold R, Norris J, Browning G. Veterinary Students' Knowledge and Perceptions About Antimicrobial Stewardship and Biosecurity-A National Survey. Antibiotics (Basel) 2018; 7:E34. [PMID: 29670064 PMCID: PMC6023091 DOI: 10.3390/antibiotics7020034] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 04/16/2018] [Accepted: 04/17/2018] [Indexed: 01/03/2023] Open
Abstract
A better understanding of veterinary students’ perceptions, attitudes, and knowledge about antimicrobial stewardship and biosecurity could facilitate more effective education of future veterinarians about these important issues. A multicenter cross-sectional study was performed by administering a questionnaire to veterinary students expected to graduate in 2017 or 2018 in all Australian veterinary schools. Four hundred and seventy-six of 1246 students (38%) completed the survey. Many students were unaware of the high importance of some veterinary drugs to human medicine, specifically enrofloxacin and cefovecin (59% and 47% of responses, respectively). Fewer than 10% of students would use appropriate personal protective equipment in scenarios suggestive of Q fever or psittacosis. Students expected to graduate in 2018 were more likely to select culture and susceptibility testing in companion animal cases (OR 1.89, 95% CI 1.33–2.69, p < 0.001), and were more likely to appropriately avoid antimicrobials in large animal cases (OR 1.75, 95% CI 1.26–2.44, p = 0.001) than those expected to graduate in 2017. However, 2018 graduates were less likely to correctly identify the importance rating of veterinary antimicrobials for human health (OR 0.48, 95% CI 0.34–0.67, p < 0.001) than 2017 graduates. Students reported having a good knowledge of antimicrobial resistance, and combating resistance, but only 34% thought pharmacology teaching was adequate and only 20% said that teaching in lectures matched clinical teaching. Efforts need to be made to harmonize preclinical and clinical teaching, and greater emphasis is needed on appropriate biosecurity and antimicrobial stewardship.
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Affiliation(s)
- Laura Hardefeldt
- Asia-Pacific Centre for Animal Health, Department of Veterinary Biosciences, Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, University of Melbourne, Parkville, VIC 3050, Australia.
- National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Grattan St, Carlton, VIC 3050, Australia.
| | - Torben Nielsen
- School of Animal and Veterinary Sciences, University of Adelaide, Roseworthy, SA 5371, Australia.
| | - Helen Crabb
- Asia-Pacific Centre for Animal Health, Department of Veterinary Biosciences, Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, University of Melbourne, Parkville, VIC 3050, Australia.
- National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Grattan St, Carlton, VIC 3050, Australia.
| | - James Gilkerson
- Asia-Pacific Centre for Animal Health, Department of Veterinary Biosciences, Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, University of Melbourne, Parkville, VIC 3050, Australia.
| | - Richard Squires
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, QLD 4810, Australia.
| | - Jane Heller
- School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, NSW 2650, Australia.
| | - Claire Sharp
- School of Veterinary and Life Sciences, Murdoch University, Perth, WA 6150, Australia.
| | - Rowland Cobbold
- School of Veterinary Science, University of Queensland, Gatton, QLD 4343, Australia.
| | - Jacqueline Norris
- Sydney School of Veterinary Science, University of Sydney, Sydney, NSW 2006, Australia.
| | - Glenn Browning
- Asia-Pacific Centre for Animal Health, Department of Veterinary Biosciences, Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, University of Melbourne, Parkville, VIC 3050, Australia.
- National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Grattan St, Carlton, VIC 3050, Australia.
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20
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Bok E, Mazurek J, Myc A, Stosik M, Wojciech M, Baldy-Chudzik K. Comparison of Commensal Escherichia coli Isolates from Adults and Young Children in Lubuskie Province, Poland: Virulence Potential, Phylogeny and Antimicrobial Resistance. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:ijerph15040617. [PMID: 29597292 PMCID: PMC5923659 DOI: 10.3390/ijerph15040617] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 03/22/2018] [Accepted: 03/23/2018] [Indexed: 12/14/2022]
Abstract
Commensal Escherichia coli population is a dynamic structure which may be important in the pathogenesis of extraintestinal infections. The aim of this study was the comparison of genetic diversity of commensal E. coli isolates from two age group—adults and young children. E. coli strains were isolated on MacConkey agar and identified by biochemical tests. Determination of four major phylogenetic groups, identification of virulence genes and antimicrobial resistance determinants were performed by using multiplex or simplex PCR. Phenotypic analysis of resistance was based on disc-diffusion method. The prevalence of virulence genes was significantly higher among isolates from adults than from young children. Phylogroup B2 predominated among E. coli from adults, whereas phylogroup A was the most common in isolates from young children. The analyses of antimicrobial resistance revealed that resistance to at least one antimicrobial agent and multidrug-resistance were detected significantly more frequent in the isolates from adults than from young children. This study documented that the commensal E. coli isolates from adults showed greater genetic diversity than from young children and constitutes a substantial reservoir of the virulence genes typical for extraintestinal pathogenic E. coli.
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Affiliation(s)
- Ewa Bok
- Department of Microbiology and Genetics, Faculty of Biological Sciences, University of Zielona Góra, 65-561 Zielona Góra, Poland.
| | - Justyna Mazurek
- Department of Microbiology and Genetics, Faculty of Biological Sciences, University of Zielona Góra, 65-561 Zielona Góra, Poland.
| | - Andrzej Myc
- Department of Microbiology and Genetics, Faculty of Biological Sciences, University of Zielona Góra, 65-561 Zielona Góra, Poland.
- Laboratory of Virology, Department of Immunology of Infectious Diseases, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, 53-114 Wroclaw, Poland.
- Michigan Nanotechnology Institute for Medicine and Biological Sciences, University of Michigan Medical School, Ann Arbor, MI 48109-5648, USA.
| | - Michał Stosik
- Department of Microbiology and Genetics, Faculty of Biological Sciences, University of Zielona Góra, 65-561 Zielona Góra, Poland.
| | - Magdalena Wojciech
- Department of Mathematical Statistics and Econometrics, Faculty of Mathematics, Computer Science and Econometrics, University of Zielona Góra, 65-516 Zielona Góra, Poland.
| | - Katarzyna Baldy-Chudzik
- Department of Microbiology and Genetics, Faculty of Biological Sciences, University of Zielona Góra, 65-561 Zielona Góra, Poland.
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21
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Saputra S, Jordan D, Mitchell T, Wong HS, Abraham RJ, Kidsley A, Turnidge J, Trott DJ, Abraham S. Antimicrobial resistance in clinical Escherichia coli isolated from companion animals in Australia. Vet Microbiol 2017; 211:43-50. [PMID: 29102120 DOI: 10.1016/j.vetmic.2017.09.014] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 09/19/2017] [Accepted: 09/20/2017] [Indexed: 10/18/2022]
Abstract
Multidrug-resistant (MDR) Escherichia coli have become a major public health concern to both humans and animal health. While the frequency of antimicrobial resistance (AMR) in clinical E. coli is monitored regularly in human medicine, current frequency of AMR in companion animals remains unknown in Australia. In this study we conducted antimicrobial susceptibility testing (AST) and where possible, determined potential risk factors for MDR infection among 883 clinical Escherichia coli isolated from dogs (n=514), cats (n=341) and horses (n=28). AST was undertaken for 15 antimicrobial agents according to the Clinical Laboratory Standards Institute (CLSI) guidelines and interpreted using epidemiological cut-off values (ECOFFs) as well as CLSI veterinary and human clinical breakpoints. The AST revealed complete absence of resistance to carbapenems while resistance to amikacin was observed at a low level in isolates from dogs (1.6%) and cats (1.5%) compared to horses (10.7%). Among dog isolates, resistance to fluoroquinolones ranged from 9.1%-9.3% whereas among cat isolates, it ranged from 3.2%-5%. Among dog isolates, the proportion showing a 3rd generation cephalosporin (3GC) non-wild type phenotype was significantly higher (P<0.05) in skin and soft tissue infection (SSTI, n=122) isolates (17.2%-20.5%) compared to urinary tract infection (UTI, n=392) isolates (9.9%-10.2%). The frequency of multidrug resistance was 18.1%, 11.7% and 42.9% in dog, cat and horse isolates, respectively. Risk factor analysis revealed that MDR E. coli isolated from UTI were positively associated with chronicity of infection and previous antimicrobial treatment. Dogs and cats with chronic UTI that had been previously treated with antimicrobials were eight times and six times more likely to be infected with MDR E. coli compared to dogs and cats with non-chronic UTI, and no history of antimicrobial treatment, respectively. This study revealed that pre-existing disease condition and prior antimicrobial use were the major risks associated with UTI with MDR E. coli in companion animals.
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Affiliation(s)
- Sugiyono Saputra
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, SA, Australia; Research Center for Biology, Indonesian Institute of Sciences, Cibinong, West Java, Indonesia
| | - David Jordan
- New South Wales Department of Primary Industries, Wollongbar, NSW, Australia
| | - Tahlia Mitchell
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, SA, Australia
| | - Hui San Wong
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, SA, Australia
| | - Rebecca J Abraham
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, SA, Australia; Antimicrobial Resistance and Infectious Diseases Laboratory, School of Veterinary and Life Sciences, Murdoch University, Perth, WA, Australia
| | - Amanda Kidsley
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, SA, Australia
| | - John Turnidge
- Australian Commission on Safety and Quality in Health Care, Sydney, NSW, Australia
| | - Darren J Trott
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, SA, Australia.
| | - Sam Abraham
- Antimicrobial Resistance and Infectious Diseases Laboratory, School of Veterinary and Life Sciences, Murdoch University, Perth, WA, Australia.
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22
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Hardefeldt LY, Browning GF, Thursky KA, Gilkerson JR, Billman-Jacobe H, Stevenson MA, Bailey KE. Cross-sectional study of antimicrobials used for surgical prophylaxis by bovine veterinary practitioners in Australia. Vet Rec 2017; 181:426. [PMID: 28893972 DOI: 10.1136/vr.104375] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 07/25/2017] [Accepted: 08/04/2017] [Indexed: 11/04/2022]
Abstract
Antimicrobials are widely used in veterinary practices, but there has been no investigation of antimicrobial classes used or the appropriateness of their use in bovine practice. This study investigated antimicrobial use for surgical prophylaxis in bovine practice in Australia. A cross-sectional study of veterinarian antimicrobial usage patterns was conducted using an online questionnaire. Information solicited included respondent's details, the frequency with which antimicrobials were used for specific surgical conditions (including the dose, timing and duration of therapy) and details of practice antimicrobial use policies and sources of information about antimicrobials. In total, 212 members of the Australian veterinary profession working in bovine practice completed the survey. Antimicrobials were always or frequently used by more than 75 per cent of respondents in all scenarios. Generally, antimicrobial drug choice was appropriate for the reported surgical conditions. Procaine penicillin and oxytetracycline accounted for 93 per cent of use. However, there was a wide range of doses used, with underdosing and inappropriate timing of administration being common reasons for inappropriate prophylactic treatment. There was very low use of critically important antimicrobials (3.3 per cent of antimicrobials reported). Antimicrobial use guidelines need to be developed and promoted to improve the responsible use of antimicrobials in bovine practice.
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Affiliation(s)
- Laura Y Hardefeldt
- Faculty of Veterinary and Agricultural Sciences, Asia-Pacific Centre for Animal Health, University of Melbourne, Parkville, Victoria, Australia.,National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Carlton, Victoria, Australia
| | - Glenn F Browning
- Faculty of Veterinary and Agricultural Sciences, Asia-Pacific Centre for Animal Health, University of Melbourne, Parkville, Victoria, Australia.,National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Carlton, Victoria, Australia
| | - Karin A Thursky
- National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Carlton, Victoria, Australia
| | - James R Gilkerson
- Faculty of Veterinary and Agricultural Sciences, Asia-Pacific Centre for Animal Health, University of Melbourne, Parkville, Victoria, Australia
| | - Helen Billman-Jacobe
- Faculty of Veterinary and Agricultural Sciences, Asia-Pacific Centre for Animal Health, University of Melbourne, Parkville, Victoria, Australia.,National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Carlton, Victoria, Australia
| | - Mark A Stevenson
- Faculty of Veterinary and Agricultural Sciences, Asia-Pacific Centre for Animal Health, University of Melbourne, Parkville, Victoria, Australia
| | - Kirsten E Bailey
- Faculty of Veterinary and Agricultural Sciences, Asia-Pacific Centre for Animal Health, University of Melbourne, Parkville, Victoria, Australia.,National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Carlton, Victoria, Australia
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23
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Stull JW, Kasten JI, Evason MD, Sherding RG, Hoet AE, O'Quin J, Burkhard MJ, Weese JS. Risk reduction and management strategies to prevent transmission of infectious disease among dogs at dog shows, sporting events, and other canine group settings. J Am Vet Med Assoc 2017; 249:612-27. [PMID: 27585099 DOI: 10.2460/javma.249.6.612] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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24
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Hardefeldt LY, Browning GF, Thursky K, Gilkerson JR, Billman-Jacobe H, Stevenson MA, Bailey KE. Antimicrobials used for surgical prophylaxis by equine veterinary practitioners in Australia. Equine Vet J 2017; 50:65-72. [PMID: 28608525 DOI: 10.1111/evj.12709] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 06/02/2017] [Indexed: 12/20/2022]
Abstract
BACKGROUND Antimicrobials are widely used in Australian veterinary practices, but no investigation into the classes of antimicrobials used, or the appropriateness of use in horses, has been conducted. OBJECTIVES The aim of the study was to describe antimicrobial use for surgical prophylaxis in equine practice in Australia. STUDY DESIGN Cross-sectional questionnaire survey. METHODS An online questionnaire was used to document antimicrobial usage patterns. Information solicited in the questionnaire included demographic details of the respondents, the frequency with which antimicrobials were used for specific surgical conditions (including the dose, timing and duration of therapy) and practice antimicrobial use policies and sources of information about antimicrobials and their uses. RESULTS A total of 337 members of the Australian veterinary profession completed the survey. Generally, the choice of antimicrobial was appropriate for the specified equine surgical condition, but the dose and duration of therapy varied greatly. While there was poor optimal compliance with British Equine Veterinary Association guidelines in all scenarios (range 1-15%), except removal of a nonulcerated dermal mass (42%), suboptimal compliance (compliant antimicrobial drug selection but inappropriate timing, dose or duration of therapy) was moderate for all scenarios (range 48-68%), except for an uninfected contaminated wound over the thorax, where both optimal and suboptimal compliance was very poor (1%). Veterinarians practicing at a university hospital had higher odds of compliance than general practice veterinarians (Odds ratio 3.2, 95% CI, 1.1-8.9, P = 0.03). MAIN LIMITATIONS Many survey responses were collected at conferences which may introduce selection bias, as veterinarians attending conferences may be more likely to have been exposed to contemporary antimicrobial prescribing recommendations. CONCLUSIONS Antimicrobial use guidelines need to be developed and promoted to improve the responsible use of antimicrobials in equine practice in Australia. An emphasis should be placed on antimicrobial therapy for wounds and appropriate dosing for procaine penicillin.
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Affiliation(s)
- L Y Hardefeldt
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia.,National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Carlton, Victoria, Australia
| | - G F Browning
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia.,National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Carlton, Victoria, Australia
| | - K Thursky
- National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Carlton, Victoria, Australia
| | - J R Gilkerson
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia
| | - H Billman-Jacobe
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia.,National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Carlton, Victoria, Australia
| | - M A Stevenson
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia
| | - K E Bailey
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia.,National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Carlton, Victoria, Australia
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25
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Hardefeldt LY, Holloway S, Trott DJ, Shipstone M, Barrs VR, Malik R, Burrows M, Armstrong S, Browning GF, Stevenson M. Antimicrobial Prescribing in Dogs and Cats in Australia: Results of the Australasian Infectious Disease Advisory Panel Survey. J Vet Intern Med 2017; 31:1100-1107. [PMID: 28514013 PMCID: PMC5508328 DOI: 10.1111/jvim.14733] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Revised: 03/15/2017] [Accepted: 04/11/2017] [Indexed: 11/29/2022] Open
Abstract
Background Investigations of antimicrobial use in companion animals are limited. With the growing recognition of the need for improved antimicrobial stewardship, there is urgent need for more detailed understanding of the patterns of antimicrobial use in this sector. Objectives To investigate antimicrobial use for medical and surgical conditions in dogs and cats by Australian veterinarians. Methods A cross‐sectional study was performed over 4 months in 2011. Respondents were asked about their choices of antimicrobials for empirical therapy of diseases in dogs and cats, duration of therapy, and selection based on culture and susceptibility testing, for common conditions framed as case scenarios: 11 medical, 2 surgical, and 8 dermatological. Results A total of 892 of the 1,029 members of the Australian veterinary profession that completed the survey satisfied the selection criteria. Empirical antimicrobial therapy was more common for acute conditions (76%) than chronic conditions (24%). Overall, the most common antimicrobial classes were potentiated aminopenicillins (36%), fluoroquinolones (15%), first‐ and second‐generation cephalosporins (14%), and tetracyclines (11%). Third‐generation cephalosporins were more frequently used in cats (16%) compared to dogs (2%). Agreement with Australasian Infectious Disease Advisory Panel (AIDAP) guidelines (generated subsequently) was variable ranging from 0 to 69% between conditions. Conclusions and Clinical Importance Choice of antimicrobials by Australian veterinary practitioners was generally appropriate, with relatively low use of drugs of high importance, except for the empirical use of fluoroquinolones in dogs, particularly for otitis externa and 3rd‐generation cephalosporins in cats. Future surveys will determine whether introduction of the 2013 AIDAP therapeutic guidelines has influenced prescribing habits.
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Affiliation(s)
- L Y Hardefeldt
- Faculty of Veterinary and Agricultural Sciences, Asia-Pacific Centre for Animal Health, University of Melbourne, Melbourne, Vic., Australia
| | - S Holloway
- Advanced Vetcare, Kensington, Vic., Australia
| | - D J Trott
- School of Animal and Veterinary Sciences, University of Adelaide, Adelaide, SA, Australia
| | - M Shipstone
- School of Veterinary Sciences, University of Queensland, Gatton, Qld, Australia
| | - V R Barrs
- Faculty of Veterinary Science, University of Sydney, Sydney, NSW, Australia
| | - R Malik
- Faculty of Veterinary Science, University of Sydney, Sydney, NSW, Australia
| | - M Burrows
- Animal Dermatology, Perth, WA, Australia
| | - S Armstrong
- Zoetis Animal Health, Rhodes, NSW, Australia
| | - G F Browning
- Faculty of Veterinary and Agricultural Sciences, Asia-Pacific Centre for Animal Health, University of Melbourne, Melbourne, Vic., Australia
| | - M Stevenson
- Faculty of Veterinary and Agricultural Sciences, Asia-Pacific Centre for Animal Health, University of Melbourne, Melbourne, Vic., Australia
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26
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Hardefeldt LY, Browning GF, Thursky K, Gilkerson JR, Billman-Jacobe H, Stevenson MA, Bailey KE. Antimicrobials used for surgical prophylaxis by companion animal veterinarians in Australia. Vet Microbiol 2017; 203:301-307. [PMID: 28619161 DOI: 10.1016/j.vetmic.2017.03.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 03/21/2017] [Accepted: 03/22/2017] [Indexed: 01/07/2023]
Abstract
Antimicrobials are widely used in veterinary practices, but there has been no investigation into the classes of antimicrobials used or the appropriateness of their use in surgical prophylaxis. Antimicrobial usage guidelines were published by the Australian Infectious Disease Advisory Panel (AIDAP) in 2013, but there has been no investigation of compliance with them. This study aimed to investigate antimicrobial use for surgical prophylaxis in companion animal practice and assess compliance with AIDAP guidelines for selected conditions by conducting a cross-sectional study of antimicrobial usage patterns of Australian veterinarians using an online questionnaire. Information solicited included: details of the respondent, the frequency with which antimicrobials were used for specific surgical conditions (including dose and duration) and practice antimicrobial use policies and sources of information about antimicrobial drugs and their uses. A total of 886 members of the Australian veterinary profession completed the survey. Few (22%) reported that their practice that had an antimicrobial use policy. Generally, the choice of antimicrobial drug was appropriate for the given surgical conditions. There was poor compliance with AIDAP guidelines for non-use of antimicrobials for routine neutering. Veterinarians caring solely for companion animals had higher odds of optimal compliance with guidelines than veterinarians in mixed species practices (OR 1.4, 95%CI 1.1-1.9). Recent graduates (>2011) had lower odds of compliance than older graduates (OR 0.8, 95%CI 0.6-0.9). The findings suggest that antimicrobial use guidelines need to be expanded and promoted to improve the responsible use of antimicrobials in small animal practice in Australia.
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Affiliation(s)
- Laura Y Hardefeldt
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia.
| | - Glenn F Browning
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia
| | - Karin Thursky
- National Centre for Antimicrobial Stewardship, Peter Doherty Institute, Grattan St., Parkville, Victoria Australia
| | - James R Gilkerson
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia
| | - Helen Billman-Jacobe
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia
| | - Mark A Stevenson
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia
| | - Kirsten E Bailey
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia
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27
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Wedley AL, Dawson S, Maddox TW, Coyne KP, Pinchbeck GL, Clegg P, Nuttall T, Kirchner M, Williams NJ. Carriage of antimicrobial resistant Escherichia coli in dogs: Prevalence, associated risk factors and molecular characteristics. Vet Microbiol 2016; 199:23-30. [PMID: 28110781 DOI: 10.1016/j.vetmic.2016.11.017] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 11/06/2016] [Accepted: 11/16/2016] [Indexed: 10/20/2022]
Abstract
Resistance to antimicrobials, in particular that mediated by extended spectrum β-lactamases (ESBL) and AmpC β-lactamases are frequently reported in bacteria causing canine disease as well as in commensal bacteria, which could be a potential health risk for humans they come into contact with. This cross-sectional study aimed to estimate the prevalence and investigate the molecular characteristics of ESBL and plasmid encoded AmpC (pAmpC)-producing E. coli in the mainland UK vet-visiting canine population and, using responses from detailed questionnaires identify factors associated with their carriage. Faecal samples were cultured for antimicrobial resistant (AMR), ESBL and pAmpC-producing E. coli. A subset of ESBL and pAmpC-producing isolates were subjected to multi-locus sequence typing and DNA microarray analyses. Multivariable logistic regression analysis was used to construct models to identify risk factors associated with multidrug resistant (MDR, resistance to three or more antimicrobial classes), fluoroquinolone resistant, ESBL and AmpC-producing E. coli. AMR E.coli were isolated from 44.8% (n=260) of samples, with 1.9% and 7.1% of samples carrying ESBL and pAmpC-producing E. coli, respectively. MDR E. coli were identified in 18.3% of samples. Recent use of antimicrobials and being fed raw poultry were both identified as risk factors in the outcomes investigated. A number of virulence and resistance genes were identified, including genes associated with extra-intestinal and enteropathogenic E. coli genotypes. Considering the close contact that people have with dogs, the high levels of AMR E. coli in canine faeces may be a potential reservoir of AMR bacteria or resistance determinants.
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Affiliation(s)
- Amy L Wedley
- Department of Epidemiology and Population Health, Institute of Infection and Global Health, Leahurst Campus, University of Liverpool, CH64 7TE, UK
| | - Susan Dawson
- School of Veterinary Science, Leahurst Campus, University of Liverpool, CH64 7TE, UK
| | - Thomas W Maddox
- Small Animal Teaching Hospital, Leahurst Campus, University of Liverpool, CH64 7TE, UK
| | - Karen P Coyne
- Department of Epidemiology and Population Health, Institute of Infection and Global Health, Leahurst Campus, University of Liverpool, CH64 7TE, UK
| | - Gina L Pinchbeck
- Department of Epidemiology and Population Health, Institute of Infection and Global Health, Leahurst Campus, University of Liverpool, CH64 7TE, UK
| | - Peter Clegg
- Department of Musculoskeletal Biology, Institute of Ageing and Chronic Disease, Leahurst Campus, University of Liverpool, CH64 7TE, UK
| | - Tim Nuttall
- School of Veterinary Science, Leahurst Campus, University of Liverpool, CH64 7TE, UK
| | - Miranda Kirchner
- Animal and Plant Health Agency, Department of Bacteriology, Woodham Lane, New Haw, Surrey, KT15 3NB, UK
| | - Nicola J Williams
- Department of Epidemiology and Population Health, Institute of Infection and Global Health, Leahurst Campus, University of Liverpool, CH64 7TE, UK.
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28
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Leite-Martins L, Mahú MI, Costa AL, Bessa LJ, Vaz-Pires P, Loureiro L, Niza-Ribeiro J, de Matos AJF, Martins da Costa P. Prevalence of antimicrobial resistance in faecal enterococci from vet-visiting pets and assessment of risk factors. Vet Rec 2015; 176:674. [PMID: 26078332 DOI: 10.1136/vr.102888] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/07/2015] [Indexed: 12/15/2022]
Abstract
The objective of this study was to determine the prevalence of antimicrobial resistance (AMR) exhibited by enterococci isolated from faeces of pets and its underlying risk factors. From September 2009 to May 2012, rectal swabs were collected from 74 dogs and 17 cats, selected from the population of animals visiting the Veterinary Hospital of University of Porto, UPVet, through a systematic random procedure. Animal owners answered a questionnaire about the risk factors that could influence the presence of AMR in faecal enterococci. Enterococci isolation, identification and antimicrobial (AM) susceptibility testing were performed. Data analyses of multilevel, univariable and multivariable generalised linear mixed models were conducted. From all enterococci isolated (n=315), 61 per cent were considered multidrug-resistant, whereas only 9.2 per cent were susceptible to all AMs tested. Highest resistance was found to tetracycline (67.0 per cent), rifampicin (60.3 per cent), azithromycin (58.4 per cent), quinupristin/dalfopristin (54.0 per cent) and erythromycin (53.0 per cent). Previous fluoroquinolone treatments and coprophagic habits were the features more consistently associated with the presence of AMR for three (chloramphenicol, ciprofloxacin and azithromycin) and seven (tetracycline, rifampicin, gentamicin, chloramphenicol, ciprofloxacin, erythromycin and azithromycin), respectively, out of nine AMs assessed. Evaluating risk factors that determine the presence of drug-resistant bacteria in pets, a possible source of resistance determinants to human beings, is crucial for the selection of appropriate treatment guidelines by veterinary practitioners.
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Affiliation(s)
- L Leite-Martins
- Department of Veterinary Clinics - UPVet, Abel Salazar Institute for the Biomedical Sciences (ICBAS), University of Porto, Porto, Portugal Department of Aquatic Production, ICBAS, University of Porto, Porto, Portugal
| | - M I Mahú
- Department of Aquatic Production, ICBAS, University of Porto, Porto, Portugal Gulbenkian Science Institute, Lisbon, Portugal
| | - A L Costa
- Department of Aquatic Production, ICBAS, University of Porto, Porto, Portugal
| | - L J Bessa
- Department of Aquatic Production, ICBAS, University of Porto, Porto, Portugal Interdisciplinary Centre for Marine and Environmental Research (CIIMAR), University of Porto, Porto, Portugal
| | - P Vaz-Pires
- Department of Aquatic Production, ICBAS, University of Porto, Porto, Portugal
| | - L Loureiro
- Department of Global Community Health and Behavioral Sciences, Tulane School of Public Health and Tropical Medicine, New Orleans, USA
| | - J Niza-Ribeiro
- Department of Population Studies, ICBAS, and Institute of Public Health (ISPUP), University of Porto, Porto, Portugal
| | - A J F de Matos
- Department of Veterinary Clinics - UPVet, Abel Salazar Institute for the Biomedical Sciences (ICBAS), University of Porto, Porto, Portugal Animal Science and Study Centre/Food and Agrarian Sciences and Technologies Institute (CECA/ICETA), University of Porto, Porto, Portugal
| | - P Martins da Costa
- Department of Aquatic Production, ICBAS, University of Porto, Porto, Portugal Interdisciplinary Centre for Marine and Environmental Research (CIIMAR), University of Porto, Porto, Portugal
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