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Oh JY, Park HM. Molecular characterization of uropathogenic Escherichia coli (UPEC) strains isolated from companion dogs and cats in Korea. J Vet Sci 2025; 26:e14. [PMID: 39901473 PMCID: PMC11799088 DOI: 10.4142/jvs.24244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2024] [Revised: 01/09/2025] [Accepted: 01/09/2025] [Indexed: 02/05/2025] Open
Abstract
IMPORTANCE Urinary tract infections (UTIs) are common and significant health issues in pets. Although extensive international research exists on their prevention and treatment, a notable gap remains in analyzing the characteristics of the causative bacteria. OBJECTIVE To investigate the phylogroup, antimicrobial resistance (AMR), and molecular genotype of Escherichia coli isolates from dogs and cats with UTIs in animal clinics in Korea. METHODS Uropathogenic E. coli (UPEC) strains were analyzed for phylogenetic grouping polymerase chain reaction, AMR, transferable resistance plasmids, and multilocus sequence typing. RESULTS Sixty-seven UPECs were isolated from urine samples of dogs (n = 57) and cats (n = 10). Regarding age, the incidence of UTI was the highest in the 11 to 15 years range (46.3%, 31/67). Regarding sex, it accounted for 58.2% (n = 39) in female dogs and 11.9% (8/67) in female cats. Phylogroup B2 was the most frequent (n = 51, 75.0%) among all strains, followed by D (16.2%), A (7.4%), and B1 (1.5%). Thirty-seven (55.2%) UPECs were multidrug-resistant (MDR), and 24 (35.8%) of them belonged to phylogroup B2. Extended-spectrum cephalosporin and carbapenemase genes were detected in 18 (26.9%) UPECs and plasmids carrying these resistance genes were conjugated between strains. Thirty sequence types (STs) were identified among the total strains. Among the UPECs (n = 51) with phylogroup B2, 23 STs were identified, with ST73 being the most frequent (n = 12, 17.9%), followed by ST131 (n = 9, 13.4%). CONCLUSIONS AND RELEVANCE Phylogroup B2 strains, particularly ST73 and ST121, were most prevalent in UPECs from Korean companion dogs and cats. For MDR UPECs, appropriate antibiotic selection is essential for the treatment of UTIs.
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Affiliation(s)
- Jae Young Oh
- Division of Biotechnology, Jeonbuk National University, Iksan 54596, Korea
| | - Hee Myung Park
- Laboratory of Veterinary Internal Medicine, Konkuk University College of Veterinary Medicine, Seoul 05029, Korea.
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2
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Moon BY, Ali MS, Kwon DH, Heo YE, Hwang YJ, Kim JI, Lee YJ, Yoon SS, Moon DC, Lim SK. Antimicrobial Resistance in Escherichia coli Isolated from Healthy Dogs and Cats in South Korea, 2020-2022. Antibiotics (Basel) 2023; 13:27. [PMID: 38247586 PMCID: PMC10812631 DOI: 10.3390/antibiotics13010027] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/11/2023] [Accepted: 12/18/2023] [Indexed: 01/23/2024] Open
Abstract
The occurrence of antimicrobial-resistant bacteria in companion animals poses public health hazards globally. This study aimed to evaluate the antimicrobial resistance profiles and patterns of commensal E. coli strains obtained from fecal samples of healthy dogs and cats in South Korea between 2020 and 2022. In total, 843 E. coli isolates (dogs, n = 637, and cats, n = 206) were assessed for susceptibility to 20 antimicrobials. The resistance rates of the most tested antimicrobials were significantly higher in dog than in cat isolates. Cefalexin (68.9%) demonstrated the highest resistance rates, followed by ampicillin (38.3%), tetracycline (23.1%), and cefazolin (18.7%). However, no or very low resistance (0-0.6%) to amikacin, imipenem, piperacillin, and colistin was found in both dog and cat isolates. Overall, 42.3% of the isolates exhibited multidrug resistance (MDR). MDR in isolates from dogs (34.9%) was significantly higher than in those from cats (20.9%). The main components of the resistance patterns were cefalexin and ampicillin in both dog and cat isolates. Additionally, MDR patterns in isolates from dogs (29.2%) and cats (16%) were shown to encompass five or more antimicrobials. Multidrug-resistant commensal E. coli could potentially be spread to humans or other animals through clonal or zoonotic transmission. Therefore, the incidence of antimicrobial resistance in companion animals highlights the urgent need to restrict antimicrobial resistance and ensure the prudent use of antimicrobials in Korea.
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Affiliation(s)
- Bo-Youn Moon
- Bacterial Disease Division, Animal and Plant Quarantine Agency, 177 Hyeksin 8-ro, Gimcheon-si 39660, Republic of Korea; (B.-Y.M.); (M.S.A.); (D.-H.K.); (Y.-E.H.); (Y.-J.H.); (J.-I.K.); (Y.J.L.); (S.-S.Y.)
| | - Md. Sekendar Ali
- Bacterial Disease Division, Animal and Plant Quarantine Agency, 177 Hyeksin 8-ro, Gimcheon-si 39660, Republic of Korea; (B.-Y.M.); (M.S.A.); (D.-H.K.); (Y.-E.H.); (Y.-J.H.); (J.-I.K.); (Y.J.L.); (S.-S.Y.)
| | - Dong-Hyeon Kwon
- Bacterial Disease Division, Animal and Plant Quarantine Agency, 177 Hyeksin 8-ro, Gimcheon-si 39660, Republic of Korea; (B.-Y.M.); (M.S.A.); (D.-H.K.); (Y.-E.H.); (Y.-J.H.); (J.-I.K.); (Y.J.L.); (S.-S.Y.)
| | - Ye-Eun Heo
- Bacterial Disease Division, Animal and Plant Quarantine Agency, 177 Hyeksin 8-ro, Gimcheon-si 39660, Republic of Korea; (B.-Y.M.); (M.S.A.); (D.-H.K.); (Y.-E.H.); (Y.-J.H.); (J.-I.K.); (Y.J.L.); (S.-S.Y.)
| | - Yu-Jeong Hwang
- Bacterial Disease Division, Animal and Plant Quarantine Agency, 177 Hyeksin 8-ro, Gimcheon-si 39660, Republic of Korea; (B.-Y.M.); (M.S.A.); (D.-H.K.); (Y.-E.H.); (Y.-J.H.); (J.-I.K.); (Y.J.L.); (S.-S.Y.)
| | - Ji-In Kim
- Bacterial Disease Division, Animal and Plant Quarantine Agency, 177 Hyeksin 8-ro, Gimcheon-si 39660, Republic of Korea; (B.-Y.M.); (M.S.A.); (D.-H.K.); (Y.-E.H.); (Y.-J.H.); (J.-I.K.); (Y.J.L.); (S.-S.Y.)
| | - Yun Jin Lee
- Bacterial Disease Division, Animal and Plant Quarantine Agency, 177 Hyeksin 8-ro, Gimcheon-si 39660, Republic of Korea; (B.-Y.M.); (M.S.A.); (D.-H.K.); (Y.-E.H.); (Y.-J.H.); (J.-I.K.); (Y.J.L.); (S.-S.Y.)
| | - Soon-Seek Yoon
- Bacterial Disease Division, Animal and Plant Quarantine Agency, 177 Hyeksin 8-ro, Gimcheon-si 39660, Republic of Korea; (B.-Y.M.); (M.S.A.); (D.-H.K.); (Y.-E.H.); (Y.-J.H.); (J.-I.K.); (Y.J.L.); (S.-S.Y.)
| | - Dong-Chan Moon
- Division of Antimicrobial Resistance Research, Centre for Infectious Diseases Research, Korea Disease Control and Prevention Agency, Cheongju 28159, Republic of Korea
| | - Suk-Kyung Lim
- Bacterial Disease Division, Animal and Plant Quarantine Agency, 177 Hyeksin 8-ro, Gimcheon-si 39660, Republic of Korea; (B.-Y.M.); (M.S.A.); (D.-H.K.); (Y.-E.H.); (Y.-J.H.); (J.-I.K.); (Y.J.L.); (S.-S.Y.)
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3
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Cocco A, Alessiani A, Salini R, Iapaolo F, Averaimo D, Pompilii C, Foschi G, Bellucci F, Iannino F, Dalla Villa P, Janowicz A, Caporale M. Detection of Potential Zoonotic Agents Isolated in Italian Shelters and the Assessment of Animal Welfare Correlation with Antimicrobial Resistance in Escherichia coli Strains. Antibiotics (Basel) 2023; 12:antibiotics12050863. [PMID: 37237766 DOI: 10.3390/antibiotics12050863] [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: 03/27/2023] [Revised: 05/02/2023] [Accepted: 05/03/2023] [Indexed: 05/28/2023] Open
Abstract
Welfare conditions in shelters, where dogs might be housed for a long period of time, may have a possible correlation with the occurrence of bacterial pathogens and their antimicrobial resistance (AMR). In this study, we assessed the occurrence of AMR in 54 strains of Escherichia coli isolated from dogs housed in 15 Italian shelters and we correlated the resistance patterns to animal welfare. We also aimed to evaluate the presence of specific pathogens with zoonotic potential in sheltered dogs. Thus, nasopharyngeal, rectal, and oral swabs were collected from a group of 20 dogs in each shelter and totaled 758 swabs. We identified 9 Staphylococcus pseudointermedius, 1 Pasteurella multocida, 9 Staphylococcus aureus, 12 Campylobacter spp., 54 Escherichia coli, 2 Salmonella enterica, and 246 Capnocytophaga spp. The antimicrobial susceptibility was assessed for the E. coli isolates using a panel of 14 antibiotics. The highest level of relative AMR was recorded for ampicillin and sulfamethoxazole. The association found between AMR and the levels of animal welfare scores in shelters was evident although not statistically significant. These results support the hypothesis that the good management of shelters can increase the level of animal welfare, thus reducing the use of antibiotics and, as a consequence, the AMR occurrence found in dogs that share their domestic environment with humans.
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Affiliation(s)
- Antonio Cocco
- Istituto Zooprofilattico Sperimentale dell'Abruzzo e Molise "G. Caporale", 64100 Teramo, Italy
| | - Alessandra Alessiani
- Istituto Zooprofilattico Sperimentale dell'Abruzzo e Molise "G. Caporale", 64100 Teramo, Italy
- Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, 71121 Foggia, Italy
| | - Romolo Salini
- Istituto Zooprofilattico Sperimentale dell'Abruzzo e Molise "G. Caporale", 64100 Teramo, Italy
| | - Federica Iapaolo
- Istituto Zooprofilattico Sperimentale dell'Abruzzo e Molise "G. Caporale", 64100 Teramo, Italy
| | - Daniela Averaimo
- Istituto Zooprofilattico Sperimentale dell'Abruzzo e Molise "G. Caporale", 64100 Teramo, Italy
| | - Cinzia Pompilii
- Istituto Zooprofilattico Sperimentale dell'Abruzzo e Molise "G. Caporale", 64100 Teramo, Italy
| | - Giovanni Foschi
- Istituto Zooprofilattico Sperimentale dell'Abruzzo e Molise "G. Caporale", 64100 Teramo, Italy
| | - Fabio Bellucci
- Ministero della Salute, Direzione Generale della Sanità e dei Farmaci Veterinari, 00144 Roma, Italy
| | - Filomena Iannino
- Istituto Zooprofilattico Sperimentale dell'Abruzzo e Molise "G. Caporale", 64100 Teramo, Italy
| | - Paolo Dalla Villa
- Istituto Zooprofilattico Sperimentale dell'Abruzzo e Molise "G. Caporale", 64100 Teramo, Italy
| | - Anna Janowicz
- Istituto Zooprofilattico Sperimentale dell'Abruzzo e Molise "G. Caporale", 64100 Teramo, Italy
| | - Marco Caporale
- Istituto Zooprofilattico Sperimentale dell'Abruzzo e Molise "G. Caporale", 64100 Teramo, Italy
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Sato T, Harada K, Usui M, Yokota SI, Horiuchi M. Colistin Susceptibility in Companion Animal-Derived Escherichia coli, Klebsiella spp., and Enterobacter spp. in Japan: Frequent Isolation of Colistin-Resistant Enterobacter cloacae Complex. Front Cell Infect Microbiol 2022; 12:946841. [PMID: 35873176 PMCID: PMC9299427 DOI: 10.3389/fcimb.2022.946841] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 06/06/2022] [Indexed: 11/13/2022] Open
Abstract
Transmission of colistin-resistant Enterobacterales from companion animals to humans poses a clinical risk as colistin is a last-line antimicrobial agent for treatment of multidrug-resistant Gram-negative bacteria including Enterobacterales. In this study, we investigated the colistin susceptibility of 285 Enterobacterales (including 140 Escherichia coli, 86 Klebsiella spp., and 59 Enterobacter spp.) isolated from companion animals in Japan. We further characterized colistin-resistant isolates by multilocus sequence typing (MLST), phylogenetic analysis of hsp60 sequences, and population analysis profiling, to evaluate the potential clinical risk of companion animal-derived colistin-resistant Enterobacterales to humans in line with the One Health approach. All E. coli isolates were susceptible to colistin, and only one Klebsiella spp. isolate (1.2%, 1/86 isolates) was colistin resistant. Enterobacter spp. isolates were frequently colistin resistant (20.3%, 12/59 isolates). In colistin-resistant Enterobacter spp., all except one isolate exhibited colistin heteroresistance by population analysis profiling. These colistin-heteroresistant isolates belonged to clusters I, II, IV, VIII, and XII based on hsp60 phylogeny. MLST analysis revealed that 12 colistin-resistant Enterobacter spp. belonged to the Enterobacter cloacae complex; five Enterobacter kobei (four ST591 and one ST1577), three Enterobacter asburiae (one ST562 and two ST1578), two Enterobacter roggenkampii (ST606 and ST1576), and Enterobacter hormaechei (ST1579) and E. cloacae (ST765) (each one strain). Forty-two percent of the colistin-resistant E. cloacae complex isolates (predominantly ST562 and ST591) belonged to lineages with human clinical isolates. Four E. kobei ST591 isolates were resistant to third-generation cephalosporines, aminoglycosides, and fluroquinolones but remained susceptible to carbapenems. In conclusion, our study is the first to our knowledge to report the frequent isolation of the colistin-resistant E. cloacae complex from companion animals. Furthermore, a subset of isolates belonged to human-associated lineages with resistance to multiple classes of antibiotics. These data warrant monitoring carriage of the colistin-resistant E. cloacae complex in companion animals as part of a domestic infection control procedure in line with the One Health approach.
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Affiliation(s)
- Toyotaka Sato
- Laboratory of Veterinary Hygiene, School/Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan.,Graduate School of Infectious Diseases, Hokkaido University, Sapporo, Japan.,Department of Microbiology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Kazuki Harada
- Department of Veterinary Internal Medicine, Tottori University, Tottori, Japan
| | - Masaru Usui
- Laboratory of Food Microbiology and Food Safety, Department of Health and Environmental Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan
| | - Shin-Ichi Yokota
- Department of Microbiology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Motohiro Horiuchi
- Laboratory of Veterinary Hygiene, School/Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan.,Graduate School of Infectious Diseases, Hokkaido University, Sapporo, Japan
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5
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Abstract
The emergence of resistant microorganisms towards standard antibiotics has stimulated an on-going exploration for new sources of antimicrobials. The microbial susceptibility of extracts produced from leaf, bark, or rhizome parts of nine different New Zealand bushes was investigated using liquid broth dilution and agar plating techniques. Minimum inhibitory (MIC) and lethal concentrations (MLC) were expressed in micrograms of dry extract per milliliters of solution. The lowest MIC of 62.5 μg/mL was determined for methanol extract of Kunzea ericoides against Bacillus cereus and Candida albicans, and ethyl acetate extract of Pseudowintera colorata against Staphylococcus aureus. Additionally, K. ericoides also presented the lowest MLC of 250 μg/mL against S. aureus and B. cereus (methanol extract), and against S. aureus (ethyl acetate extract). The methanol extract of Weinmannia racemosa was lethal to B. cereus (MLC = 250 µg/mL). Some of the extracts of Phormium tenax, Schefflera digitata, and Pomaderris kumeraho were antimicrobial against S. aureus and B. cereus (MIC = 500 µg/mL). The extracts of Geniostoma ligustrifolium and Melicytus ramiflorus plants did not exhibit antimicrobial activity.
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6
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Yudhanto S, Hung CC, Maddox CW, Varga C. Antimicrobial Resistance in Bacteria Isolated From Canine Urine Samples Submitted to a Veterinary Diagnostic Laboratory, Illinois, United States. Front Vet Sci 2022; 9:867784. [PMID: 35601398 PMCID: PMC9114880 DOI: 10.3389/fvets.2022.867784] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 03/29/2022] [Indexed: 11/15/2022] Open
Abstract
The emergence of antimicrobial resistance (AMR) in dogs constitutes a threat to animal and human health. There is a lack of studies in Illinois that evaluated the prevalence of AMR among urinary bacterial pathogens. In the study, we included 803 isolates (299 Gram-positive and 504 Gram-negative) that were isolated from 2,583 canine urine samples submitted to the Veterinary Diagnostic Laboratory, the University of Illinois between 2019 and 2020 from dogs suspected of urinary tract infections (UTI). The most common Gram-positive isolates included Staphylococcus pseudintermedius (17.93%), Enterococcus faecalis (9.46%), Streptococcus canis (6.10%), and Enterococcus faecium (3.74%), while Gram-negative isolates included Escherichia coli (45.58%), Proteus mirabilis (11.08%), Klebsiella pneumoniae (3.11%), and Pseudomonas aeruginosa (2.99%). Among the Gram-positive isolates, Staphylococcus pseudintermedius isolates showed a very high prevalence of resistance to penicillin (56.94%), a high prevalence of resistance to trimethoprim-sulfamethoxazole (31.94%), enrofloxacin (29.17%), and oxacillin (27.08%). Among Gram-negative bacteria, Escherichia coli isolates showed a high prevalence of resistance to ampicillin (31.42%). Considering the high prevalence of resistance to antimicrobials commonly used to treat UTI in dogs, urine samples should be collected for bacterial culture and susceptibility testing before treatment initiation to prevent treatment failures and the development of multidrug resistance. Given the possibility of zoonotic transmission of antimicrobial-resistant bacteria, veterinarians when treating UTI cases, should inform dog owners of the potential transmission risk.
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Affiliation(s)
- Setyo Yudhanto
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois Urbana Champaign, Urbana, IL, United States
| | - Chien-Che Hung
- Veterinary Diagnostic Laboratory, Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois Urbana Champaign, Urbana, IL, United States
- Chien-Che Hung
| | - Carol W. Maddox
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois Urbana Champaign, Urbana, IL, United States
- Veterinary Diagnostic Laboratory, Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois Urbana Champaign, Urbana, IL, United States
| | - Csaba Varga
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois Urbana Champaign, Urbana, IL, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, United States
- *Correspondence: Csaba Varga
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Askari A, Ghanbarpour R, Akhtardanesh B, Aflatoonian MR, Sharifi H, Jajarmi M, Molaei R. Detection of zoonotic diarrheagenic pathotypes of Escherichia coli in healthy household dogs. IRANIAN JOURNAL OF MICROBIOLOGY 2020; 12:522-530. [PMID: 33613906 PMCID: PMC7884269 DOI: 10.18502/ijm.v12i6.5026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Background and Objectives Intestinal pathotypes of Escherichia coli belong to the companion animals may poses potential risk to public health following zoonotic transmission. Therefore, this study was proposed to determine the virulence genes associated to diarrheagenic E. coli strains isolated from healthy pet dogs and their owners in the southeast of Iran, Kerman province. Materials and Methods Totally 168 E. coli isolates were collected from 49 healthy household dogs and their owners. Seventy isolates were obtained from non-pet owners as control group. Presence or absence of the virulence genes including eae, stx1, stx2, st1, lt1, ipaH, cnf1 and cnf2 were screened by conventional polymerase chain reaction (PCR) and dissemination pattern of the genes were studied among the various hosts. Results PCR examinations showed that the most frequent virulence gene was ipaH (6.1%) in dogs followed by eae in dog owners (6.1%) and in controls (8.6%). The most frequent pathotypes in dogs, their owners and controls were EIEC (6.1%), EHEC (4.08%) and EPEC (8.5%), respectively. In one of studied houses, both of dog and its owner harbored E. coli strains with same virulence profile (stx1/eae) and pathotype (EHEC). Conclusion These results collectively indicate that healthy household dogs probably are the mild reservoir of potential virulent E. coli strains with possible active transmission to their contact owner. However, even non-pet owners seemed to be a notable source of intestinal pathotypes, especially EPEC, for their environment. Transmission of E. coli pathotypes may occurs by direct contact with the reservoirs or ingestion of contaminated food. These pathotypes are potentially virulent and creates public health hazards. Further studies are needed for better understanding of dissemination mechanisms of E. coli pathotypes among humans and their pets.
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Affiliation(s)
- Asma Askari
- Tropical and Infectious Diseases Research Center, Kerman University of Medical Sciences, Kerman, Iran.,Department of Pathobiology, School of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Reza Ghanbarpour
- Molecular Microbiology Research Group, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Baharak Akhtardanesh
- Department of Clinical Sciences, School of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Mohammad Reza Aflatoonian
- Tropical and Infectious Diseases Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Hamid Sharifi
- HIV/STI Surveillance Research Center, and WHO Collaborating Center for HIV Surveillance, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran.,Department of Biostatistics and Epidemiology, Faculty of Public Health, Kerman University of Medical Sciences, Kerman, Iran
| | - Maziar Jajarmi
- Department of Pathobiology, School of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Reza Molaei
- Department of Biology, Faculty of Sciences, Shahid Bahonar University of Kerman, Kerman, Iran
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Usui M, Kajino A, Kon M, Fukuda A, Sato T, Shirakawa T, Kawanishi M, Harada K, Nakajima C, Suzuki Y, Tamura Y. Prevalence of 16S rRNA methylases in Gram-negative bacteria derived from companion animals and livestock in Japan. J Vet Med Sci 2019; 81:874-878. [PMID: 31061295 PMCID: PMC6612502 DOI: 10.1292/jvms.19-0144] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
The emergence and spread of aminoglycoside-resistant bacteria are a public health
concern. The acquisition of the genes encoding 16S rRNA methylases, such as
armA, rmtA, and rmtB, confers
high-level resistance to aminoglycosides. However, the prevalence has not been well
investigated in Japanese veterinary fields. To determine the prevalence of 16S rRNA
methylases in animals, we detected 16S rRNA methylases genes in Gram-negative bacteria
from animals. Here, we report the isolation of rmtB and
armA from two of the 446 Escherichia coli (0.5%) and
one of the 103 Klebsiella spp. isolates (1.0%) from companion animals,
respectively. However, none of the isolations were observed from 2445 E.
coli isolates derived from livestock in Japan. The prevalence of 16S rRNA
methylases in animals, especially in companion animals, should be carefully monitored in
Japanese veterinary fields to avoid the spreading of the genes.
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Affiliation(s)
- Masaru Usui
- Laboratory of Food Microbiology and Food Safety, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
| | - Akari Kajino
- Laboratory of Food Microbiology and Food Safety, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
| | - Michiha Kon
- Laboratory of Food Microbiology and Food Safety, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
| | - Akira Fukuda
- Laboratory of Food Microbiology and Food Safety, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
| | - Tomomi Sato
- Laboratory of Food Microbiology and Food Safety, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
| | - Takahiro Shirakawa
- National Veterinary Assay Laboratory, Ministry of Agriculture, Forestry and Fisheries, 1-15-1 Tokura, Kokubunji, Tokyo 185-8511, Japan
| | - Michiko Kawanishi
- National Veterinary Assay Laboratory, Ministry of Agriculture, Forestry and Fisheries, 1-15-1 Tokura, Kokubunji, Tokyo 185-8511, Japan
| | - Kazuki Harada
- Department of Veterinary Internal Medicine, Tottori University, Minami 4-101, Koyama-cho, Tottori-Shi, Tottori 680-8553, Japan
| | - Chie Nakajima
- Division of Bioresources, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido 001-0020, Japan
| | - Yasuhiko Suzuki
- Division of Bioresources, Hokkaido University Research Center for Zoonosis Control, Sapporo, Hokkaido 001-0020, Japan
| | - Yutaka Tamura
- Laboratory of Food Microbiology and Food Safety, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
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Sato T, Harada K, Usui M, Tsuyuki Y, Shiraishi T, Tamura Y, Yokota SI. Tigecycline Susceptibility ofKlebsiella pneumoniaeComplex andEscherichia coliIsolates from Companion Animals: The Prevalence of Tigecycline-NonsusceptibleK. pneumoniaeComplex, Including Internationally Expanding Human Pathogenic Lineages. Microb Drug Resist 2018; 24:860-867. [DOI: 10.1089/mdr.2017.0184] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- Toyotaka Sato
- Department of Microbiology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Kazuki Harada
- Department of Veterinary Internal Medicine, Tottori University, Tottori, Japan
| | - Masaru Usui
- Laboratory of Food Microbiology and Food Safety, Department of Health and Environmental Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan
| | - Yuzo Tsuyuki
- Sanritsu Zelkova Veterinary Laboratory, Kawasaki, Japan
| | - Tsukasa Shiraishi
- Department of Microbiology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yutaka Tamura
- Laboratory of Food Microbiology and Food Safety, Department of Health and Environmental Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan
| | - Shin-ichi Yokota
- Department of Microbiology, Sapporo Medical University School of Medicine, Sapporo, Japan
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10
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Shimizu T, Harada K, Manabe S, Tsukamoto T, Ito N, Hikasa Y. Assessment of urinary pharmacokinetics and pharmacodynamics of orbifloxacin in healthy dogs with ex vivo modelling. J Med Microbiol 2017; 66:616-621. [PMID: 28470147 DOI: 10.1099/jmm.0.000476] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
PURPOSE The aim of this study was to investigate the urinary pharmacokinetics (PK) of orbifloxacin (OBFX) administered at 5 mg kg-1 in six healthy dogs. A further aim was to use an ex vivo model to evaluate the urinary PK and pharmacodynamics (PD) of OBFX to determine its urinary bactericidal titre (UBT), which represents the maximal dilution of urine allowing bactericidal activity. METHODOLOGY Fourteen urinary tract infection (UTI) pathogenic strains of five bacterial species (Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Proteus mirabilis and Staphylococcuspseudintermedius) were used. Urine samples were obtained every 4 h for the first 24 h after OBFX administration, for measurement of urine drug concentration and UBT.Results/Key findings. The urine OBFX concentration peaked at 0-4, 4-8 or 4-8 h after administration, with a maximum concentration of 383±171 µg ml-1. Overall, the fluctuation in median UBT closely correlated with that of the mean urine OBFX concentration. In addition, the median areas under the UBT-time curves (AUBTs) were significantly inversely correlated with the MICs for OBFX in the tested strains (P<0.01). Notably, median UBTs and AUBTs were extremely low (0-0.5 and 2-5, respectively) in OBFX-resistant E. coli strains with MIC ≥8 µg ml-1. CONCLUSION The fluctuation of UBTs closely correlated with that of urine concentration, and UBT values depended on the susceptibility of the bacterial strains to OBFX. We believe that ex vivo modelling to determine UBTs is useful to evaluate the urinary PK/PD of antimicrobials indicated for UTIs in dogs.
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Affiliation(s)
- Takae Shimizu
- The United Graduate School of Veterinary Science, Yamaguchi University, 1677-1, Yoshida, Yamaguchi 753-8511, Japan.,Joint Department of Veterinary Medicine, Tottori University, Minami 4-101, Koyama-Cho, Tottori 680-8553, Japan
| | - Kazuki Harada
- The United Graduate School of Veterinary Science, Yamaguchi University, 1677-1, Yoshida, Yamaguchi 753-8511, Japan.,Joint Department of Veterinary Medicine, Tottori University, Minami 4-101, Koyama-Cho, Tottori 680-8553, Japan
| | - Saki Manabe
- Joint Department of Veterinary Medicine, Tottori University, Minami 4-101, Koyama-Cho, Tottori 680-8553, Japan
| | - Taku Tsukamoto
- Global Application Development Center Analytical & Measuring Instruments Division, Shimadzu Corporation, 1 Nishinokyo, Kuwahara-cho, Nakagyo-ku, Kyoto 604-8511, Japan
| | - Norihiko Ito
- Joint Department of Veterinary Medicine, Tottori University, Minami 4-101, Koyama-Cho, Tottori 680-8553, Japan
| | - Yoshiaki Hikasa
- The United Graduate School of Veterinary Science, Yamaguchi University, 1677-1, Yoshida, Yamaguchi 753-8511, Japan.,Joint Department of Veterinary Medicine, Tottori University, Minami 4-101, Koyama-Cho, Tottori 680-8553, Japan
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11
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Yoon HY, Byun JY, Park KH, Min BS, Kim JH. Sterile Pyometra in Two Dogs. Immune Netw 2017; 17:128-131. [PMID: 28458625 PMCID: PMC5407985 DOI: 10.4110/in.2017.17.2.128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 03/20/2017] [Accepted: 03/22/2017] [Indexed: 12/01/2022] Open
Abstract
Two young dogs were referred to the Veterinary Medical Teaching Hospital of Konkuk University, one for examination of vaginal discharge and the other after being hit by a car. Dog 1 exhibited a high neutrophil count on Gram-stained vaginal smears, marked leukocytosis on a complete blood count, and uterine enlargement on ultrasonography. In dog 2, a markedly enlarged right uterine horn containing echogenic debris was found incidentally on ultrasonography. A tentative diagnosis of pyometra was made in both cases and ovariohysterectomy was performed. Purulent material was collected from each uterine horn and submitted separately for aerobic and anaerobic bacterial culture; all culture results were negative. The white blood cell count revealed normal limits 2 days post operation in dog 1 and 4 days post operation in dog 2. Positive bacterial cultures are usually obtained from dogs with pyometra, and antibiotic selection is based on the results of culture and sensitivity testing in the event of failure of empiric antibiotic therapy. However, in the cases reported here, no bacterial growth was identified from the uterine samples despite the presence of purulent material. A short course of empiric antibiotic therapy was administered. This is the first known report describing sterile pyometra in dogs.
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Affiliation(s)
- Hun-Young Yoon
- Department of Veterinary Surgery, Konkuk University Veterinary Medical Teaching Hospital, Konkuk University, Seoul 05029, Korea
| | - Jae-Young Byun
- Department of Veterinary Surgery, Konkuk University Veterinary Medical Teaching Hospital, Konkuk University, Seoul 05029, Korea
| | - Kang-Hyo Park
- Department of Veterinary Surgery, Konkuk University Veterinary Medical Teaching Hospital, Konkuk University, Seoul 05029, Korea
| | - Byong-Su Min
- Department of Veterinary Surgery, Konkuk University Veterinary Medical Teaching Hospital, Konkuk University, Seoul 05029, Korea
| | - Jung-Hyun Kim
- Department of Veterinary Internal Medicine, Konkuk University Veterinary Medical Teaching Hospital, Konkuk University, Seoul 05029, Korea
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Shimizu T, Harada K. Determination of minimum biofilm eradication concentrations of orbifloxacin for canine bacterial uropathogens over different treatment periods. Microbiol Immunol 2017; 61:17-22. [PMID: 28042660 DOI: 10.1111/1348-0421.12461] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 12/23/2016] [Accepted: 12/27/2016] [Indexed: 12/01/2022]
Abstract
Biofilm formation can cause refractory urinary tract infections (UTIs) in dogs; however, minimum biofilm eradication concentrations (MBECs) of veterinary drugs against canine uropathogens remain to be investigated. In this study, the MBECs of orbifloxacin (OBFX), trimethoprim-sulfamethoxazole (TMS) and amoxicillin/clavulanate (ACV) over different time periods for treatment of canine uropathogenic Escherichia coli (n = 10) were determined. The MBECs of OBFX for other bacterial uropathogens, including Staphylococcus pseudintermedius (n = 5), Pseudomonas aeruginosa (n = 5), Klebsiella pneumoniae (n = 5) and Proteus mirabilis (n = 5) were also determined. Minimum inhibitory concentrations (MICs) were identified for all strains by broth microdilution, and MBECs were determined at 24, 72, and 168 hr using the Calgary biofilm method. The 24 hr MBECs of OBFX, TMS and ACV for the E. coli strains were significantly higher than the MICs (P < 0.05), and the 72 and 168 hr MBECs were significantly lower than those at 24 hr (P < 0.05). In addition, the 24 hr OBFX MBECs for the four other uropathogens were significantly higher than the corresponding MICs (P < 0.05). The 72 and/or 168 hr OBFX MBECs for S. pseudintermedius, K. pneumoniae and P. mirabilis were significantly lower than the 24 hr concentrations (P < 0.05), whereas for P. aeruginosa, no significant difference was found between any of the MBECs (P > 0.05). These data indicate that the administration period and uropathogenic bacterial species are important factors affecting the efficacy of OBFX treatment of biofilm-related UTIs in dogs.
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Affiliation(s)
- Takae Shimizu
- United Graduate School of Veterinary Science, Yamaguchi University, 1677-1, Yoshida, Yamaguchi, 753-8511.,Joint Department of Veterinary Medicine, Tottori University, Minami 4-101, Koyama-Cho, Tottori 680-8553, Japan
| | - Kazuki Harada
- United Graduate School of Veterinary Science, Yamaguchi University, 1677-1, Yoshida, Yamaguchi, 753-8511.,Joint Department of Veterinary Medicine, Tottori University, Minami 4-101, Koyama-Cho, Tottori 680-8553, Japan
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Phenotypic and molecular characterization of antimicrobial resistance in Enterobacter spp. isolates from companion animals in Japan. PLoS One 2017; 12:e0174178. [PMID: 28328967 PMCID: PMC5362103 DOI: 10.1371/journal.pone.0174178] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 03/04/2017] [Indexed: 01/13/2023] Open
Abstract
The emergence of antimicrobial resistance among Enterobacter spp., including resistance to extended-spectrum cephalosporins (ESC), is of great concern in both human and veterinary medicine. In this study, we investigated the prevalence of antimicrobial resistance among 60 isolates of Enterobacter spp., including E. cloacae (n = 44), E. aerogenes (n = 10), and E. asburiae (n = 6), from clinical specimens of dogs and cats from 15 prefectures in Japan. Furthermore, we characterized the resistance mechanisms harbored by these isolates, including extended-spectrum β-lactamases (ESBLs) and plasmid-mediated quinolone resistance (PMQR); and assessed the genetic relatedness of ESC-resistant Enterobacter spp. strains by multilocus sequence typing (MLST) and pulsed-field gel electrophoresis (PFGE). Antimicrobial susceptibility testing demonstrated the resistance rates to ampicillin (93.3%), amoxicillin-clavulanic acid (93.3%), cefmetazole (93.3%), chloramphenicol (46.7%), ciprofloxacin (43.3%), tetracycline (40.0%), ceftazidime (33.3%), cefotaxime (33.3%), trimethoprim/sulfamethoxazole (28.3%), gentamicin (23.3%), and meropenem (0%). Phenotypic testing detected ESBLs in 16 of 18 ESC-resistant E. cloacae isolates but not in the other species. The most frequent ESBL was CTX-M-15 (n = 8), followed by SHV-12 (n = 7), and CTX-M-3 (n = 1). As for AmpC β-lactamases, CMY-2 (n = 2) and DHA-1 (n = 2) were identified in ESC-resistant E. cloacae strains with or without ESBLs. All of the ESC-resistant E. cloacae strains also harbored one or two PMQRs, including qnrB (n = 15), aac(6’)-Ib-cr (n = 8), and qnrS (n = 2). Based on MLST and PFGE analysis, E. cloacae clones of ST591-SHV-12, ST171-CTX-M-15, and ST121-CTX-M-15 were detected in one or several hospitals. These results suggested intra- and inter-hospital dissemination of E. cloacae clones co-harboring ESBLs and PMQRs among companion animals. This is the first report on the large-scale monitoring of antimicrobial-resistant isolates of Enterobacter spp. from companion animals in Japan.
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Harada K, Shimizu T, Mukai Y, Kuwajima K, Sato T, Usui M, Tamura Y, Kimura Y, Miyamoto T, Tsuyuki Y, Ohki A, Kataoka Y. Phenotypic and Molecular Characterization of Antimicrobial Resistance in Klebsiella spp. Isolates from Companion Animals in Japan: Clonal Dissemination of Multidrug-Resistant Extended-Spectrum β-Lactamase-Producing Klebsiella pneumoniae. Front Microbiol 2016; 7:1021. [PMID: 27446056 PMCID: PMC4925667 DOI: 10.3389/fmicb.2016.01021] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 06/15/2016] [Indexed: 12/25/2022] Open
Abstract
The emergence of antimicrobial resistance in Klebsiella spp., including resistance to extended-spectrum cephalosporins (ESC) and fluoroquinolones, is of great concern in both human and veterinary medicine. In this study, we investigated the prevalence of antimicrobial resistance in a total of 103 Klebsiella spp. isolates, consisting of Klebsiella pneumoniae complex (KP, n = 89) and K. oxytoca (KO, n = 14) from clinical specimens of dogs and cats in Japan. Furthermore, we characterized the resistance mechanisms, including extended-spectrum β-lactamase (ESBL), plasmid-mediated AmpC β-lactamase (PABL), and plasmid-mediated quinolone resistance (PMQR); and assessed genetic relatedness of ESC-resistant Klebsiella spp. strains by multilocus sequence typing (MLST) and pulsed-field gel electrophoresis (PFGE). Antimicrobial susceptibility testing demonstrated that resistance rates to ampicillin, cephalothin, enrofloxacin, ciprofloxacin, trimethoprim/sulfamethoxazole, cefotaxime, gentamicin, tetracycline, chloramphenicol, amoxicillin-clavulanic acid, and cefmetazole were 98.1, 37.9, 37.9, 35.9, 35.0, 34.0, 31.1, 30.1, 28.2, 14.6, and 6.8%, respectively. Phenotypic testing detected ESBLs and/or AmpC β-lactamases in 31 of 89 (34.8%) KP isolates, but not in KO isolates. Resistances to 5 of the 12 antimicrobials tested, as well as the three PMQRs [qnrB, qnrS, and aac(6′)-Ib-cr], were detected significantly more frequently in ESBL-producing KP, than in non-ESBL-producing KP and KO. The most frequent ESBL was CTX-M-15 (n = 13), followed by CTX-M-14 (n = 7), CTX-M-55 (n = 6), SHV-2 (n = 5), CTX-M-2 (n = 2), and CTX-M-3 (n = 2). Based on the rpoB phylogeny, all ESBL-producing strains were identified as K. pneumoniae, except for one CTX-M-14-producing strain, which was identified as K. quasipneumoniae. All of AmpC β-lactamase positive isolates (n = 6) harbored DHA-1, one of the PABLs. Based on MLST and PFGE analysis, ST15 KP clones producing CTX-M-2, CTX-M-15, CTX-M-55, and/or SHV-2, as well as KP clones of ST1844-CTX-M-55, ST655-CTX-M-14, and ST307-CTX-M-15, were detected in one or several hospitals. Surprisingly, specific clones were detected in different patients at an interval of many months. These results suggest that multidrug-resistant ESBL-producing KP were clonally disseminated among companion animals via not only direct but also indirect transmission. This is the first report on large-scale monitoring of antimicrobial-resistant Klebsiella spp. isolates from companion animals in Japan.
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Affiliation(s)
- Kazuki Harada
- Department of Veterinary Internal Medicine, Tottori University Tottori, Japan
| | - Takae Shimizu
- Department of Veterinary Internal Medicine, Tottori University Tottori, Japan
| | - Yujiro Mukai
- Laboratory of Veterinary Microbiology, Nippon Veterinary and Life Science University Tokyo, Japan
| | - Ken Kuwajima
- Laboratory of Veterinary Microbiology, Nippon Veterinary and Life Science University Tokyo, Japan
| | - Tomomi Sato
- Laboratory of Food Microbiology and Food Safety, Rakuno Gakuen University Hokkaido, Japan
| | - Masaru Usui
- Laboratory of Food Microbiology and Food Safety, Rakuno Gakuen University Hokkaido, Japan
| | - Yutaka Tamura
- Laboratory of Food Microbiology and Food Safety, Rakuno Gakuen University Hokkaido, Japan
| | - Yui Kimura
- Miyamoto Animal Hospital Yamaguchi, Japan
| | | | - Yuzo Tsuyuki
- Sanritsu Zelkova Veterinary Laboratory Kanagawa, Japan
| | | | - Yasushi Kataoka
- Laboratory of Veterinary Microbiology, Nippon Veterinary and Life Science University Tokyo, Japan
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Kumar N, Nahid F, Zahra R. Association of virulence factors, phylogenetic groups and antimicrobial resistance markers in Escherichia coli from Badin city, Pakistan. J Chemother 2016; 29:8-13. [PMID: 27077934 DOI: 10.1080/1120009x.2016.1154682] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND Escherichia coli, the most frequent cause of UTIs has extensive genetic substructure and can be assigned to eight phylogroups, A, B1, B2, C, D, E, F and Escherichia cryptic clade I. We investigated the distribution of virulence determinants and antimicrobial resistance genes in relation to phylogenetic groups. METHODS A total of 77 E. coli isolates were collected from Civil Hospital Badin, Pakistan. Isolates were assigned phylogroups using quadruplex PCR method, while virulence and antibiotic resistance genes, blaCTX-M and blaNDM-1 were also detected using PCR. RESULTS Thirty-four isolates were assigned to group B2, while 23, 2, 1, 7 and 10 isolates were assigned to F, B1, A/C, clade I/II and negative, respectively. Among virulence genes, prevalence of papC (83%) was highest followed by aer (57%), papGII (16%), papGIII (14%), cnf (9%), hly (5%) and sfa (6%). Of these isolates, 23% and 9% were positive for blaCTX-M and blaNDM-1, respectively.
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Affiliation(s)
- Neeraj Kumar
- a Department of Microbiology , Quaid-i-Azam University , Islamabad , Pakistan
| | - Fouzia Nahid
- a Department of Microbiology , Quaid-i-Azam University , Islamabad , Pakistan
| | - Rabaab Zahra
- a Department of Microbiology , Quaid-i-Azam University , Islamabad , Pakistan
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Lund HS, Skogtun G, Sørum H, Eggertsdóttir AV. Antimicrobial susceptibility in bacterial isolates from Norwegian cats with lower urinary tract disease. J Feline Med Surg 2015; 17:507-15. [PMID: 25216729 PMCID: PMC10816785 DOI: 10.1177/1098612x14550171] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Studies of feline lower urinary tract disease (FLUTD) among Norwegian cats have shown higher prevalences of bacterial cystitis than most previously published reports. The aims of the present study were to identify bacterial isolates obtained from the urine of Norwegian cats with FLUTD and their susceptibility to antimicrobial agents. Eighty-two bacterial isolates from 72 urine cultures obtained from 71 different cats were included. Escherichia coli, Staphylococcus species, Enterococcus species and Streptococcus species were the most frequently detected. The percentages of isolates susceptible to the included antimicrobial agents were as follows: enrofloxacin - 92%; trimethoprim/sulfonamide - 91%; nitrofurantoin - 89%; tetracycline - 78%; ampicillin - 73%; amoxicillin/clavulanic acid - 72%; trimethoprim - 68%; amoxicillin - 58%; cephalexin - 51%; spiramycin - 39%; penicillin - 34%; fucidic acid - 34%; lincomycin - 27%. Although several tendencies towards increasing antimicrobial resistance were detected among the isolates included, the species of bacteria isolated and their patterns of antimicrobial resistance were, in general, in concurrence with the existing literature. Thus, the results do not fully explain the higher prevalence of bacterial cystitis found in Norwegian cats. Moreover, additional explanatory factors beside the inclusion of primary accession cases rather than referred cases were not found.
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Baede VO, Wagenaar JA, Broens EM, Duim B, Dohmen W, Nijsse R, Timmerman AJ, Hordijk J. Longitudinal study of extended-spectrum-β-lactamase- and AmpC-producing Enterobacteriaceae in household dogs. Antimicrob Agents Chemother 2015; 59:3117-24. [PMID: 25779568 PMCID: PMC4432141 DOI: 10.1128/aac.04576-14] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Accepted: 03/05/2015] [Indexed: 11/20/2022] Open
Abstract
A longitudinal study was performed to (i) investigate the continuity of shedding of extended-spectrum-beta-lactamase (ESBL)-producing Enterobacteriaceae in dogs without clinical signs, (ii) identify dominant plasmid-mediated ESBL genes, and (iii) quantify ESBL-producing Enterobacteriaceae in feces. Fecal samples from 38 dogs were collected monthly for 6 months. Additional samples were collected from 7 included dogs on a weekly basis for 6 weeks. Numbers of CFU per gram of feces for non-wild-type Enterobacteriaceae were determined by using MacConkey agar supplemented with 1 mg/liter cefotaxime (MCC), and those for total Enterobacteriaceae were determined by using MacConkey agar. Cefotaxime-resistant isolates were screened by PCR and sequence analysis for the presence of bla(CTX-M), bla(CMY), bla(SHV), bla(OXA), and bla(TEM) gene families. Bacterial species were identified by matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) analysis. PCR-negative isolates were tested by a double-disk synergy test for enhanced AmpC expression. A total of 259 samples were screened, and 126 samples were culture positive on MCC, resulting in 352 isolates, 327 of which were Escherichia coli. Nine dogs were continuously positive during this study, and 6 dogs were continuously negative. Monthly or weekly shifts in fecal shedding were observed for 23 dogs. Genotyping showed a large variety of ESBL genes and gene combinations at single and multiple consecutive sampling moments. The ESBL genes bla(CTX-M-1), bla(CTX-M-14), bla(CTX-M-15), bla(SHV-12), and bla(CMY-2) were most frequently found. The mean number of CFU of non-wild-type Enterobacteriaceae was 6.11 × 10(8) CFU/g feces. This study showed an abundance of ESBL-producing Enterobacteriaceae in dogs in the Netherlands, mostly in high concentrations. Fecal shedding was shown to be highly dynamic over time, which is important to consider when studying ESBL epidemiology.
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Affiliation(s)
- Valérie O Baede
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Jaap A Wagenaar
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands Central Veterinary Institute of Wageningen UR, Lelystad, the Netherlands
| | - Els M Broens
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Birgitta Duim
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Wietske Dohmen
- Division of Environmental Epidemiology, Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - Rolf Nijsse
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Arjen J Timmerman
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Joost Hordijk
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
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Multidrug resistance in Escherichia coli strains isolated from infections in dogs and cats in Poland (2007-2013). ScientificWorldJournal 2015; 2015:408205. [PMID: 25667937 PMCID: PMC4312638 DOI: 10.1155/2015/408205] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 12/18/2014] [Indexed: 11/22/2022] Open
Abstract
The antimicrobial susceptibility of Escherichia coli isolates associated with various types of infections in dogs and cats was determined. The studied isolates were most frequently susceptible to fluoroquinolones and the extended-spectrum cephalosporins (ESCs), antimicrobials commonly used in treatment of infections in companion animals. However, an increase in the percentage of strains resistant to β-lactam antibiotics including ESCs was noted between January 2007 and December 2013. The frequency of multidrug-resistant (MDR) E. coli isolation (66.8% of isolates) is alarming. Moreover, the statistically significant increase of the percentage of MDR isolates was observed during the study period. No difference in the prevalence of multidrug resistance was found between bacteria causing intestinal and extraintestinal infections and between canine and feline isolates. Nonhemolytic E. coli isolates were MDR more often than hemolytic ones. Our study showed the companion animals in Poland as an important reservoir of MDR bacteria. These results indicate that continuous monitoring of canine and feline E. coli antimicrobial susceptibility is required. Furthermore, introduction and application of recommendations for appropriate use of antimicrobials in small animal practice should be essential to minimize the emergence of multidrug resistance among E. coli in companion animals.
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Nebbia P, Tramuta C, Odore R, Nucera D, Zanatta R, Robino P. Genetic and phenotypic characterisation of Escherichia coli producing cefotaximase-type extended-spectrum β-lactamases: first evidence of the ST131 clone in cats with urinary infections in Italy. J Feline Med Surg 2014; 16:966-71. [PMID: 24621854 PMCID: PMC11104081 DOI: 10.1177/1098612x14527103] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The incidence of cefotaximase (CTX-M)-type extended-spectrum β-lactamase (ESBL)-producing Escherichia coli has increased dramatically in humans and animals since the middle of the last century. E coli that produce CTX-M β-lactamase represent a major cause of urinary tract infections, and pose a significant therapeutic challenge to both human and veterinary medicine. As data on uropathogenic CTX-M-producing strains in cats are limited, the aim of this study was to describe the genetic character and antibiotic resistance phenotypes of CTX-M-producing E coli isolated from cats with cystitis. Seven of 15 E coli bacteria isolated from 138 urine samples had the CTX-M gene and were therefore included in this study. These isolates were screened by polymerase chain reaction for the presence of 14 extra-intestinal virulence factors, class 1 and class 2 integrons, and to identify their phylogenetic groups. Multi-locus sequence typing (MLST) of the strains and susceptibility testing (disc diffusion method) were also performed. Virulence factor iutA was the most frequent determinant identified (86.7%), and the majority of CTX-M-producing strains (n = 5) carried class 1 integrons. MLST allowed us to discriminate four known sequence types (ST131, ST555, ST602, ST155) and three novel sequence types (ST3847, ST3848, ST4181). To the best of our knowledge, this is the first study to report uropathogenic CTX-M-producing E coli ST131 in cats in Italy. Accurate diagnostics and prudent use of antimicrobials are recommended to avoid the spread of multidrug-resistant pathogens in veterinary medicine and to prevent their transmission to humans.
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Rahdar M, Rashki A, Miri H. Comparison of the Common Adhesin Coding Operons Distribution in Uropathogenic and Phylogenetic Group B2 and A Escherichia coli Isolates. ACTA ACUST UNITED AC 2014. [DOI: 10.17795/ajcmi-22981] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Windahl U, Holst BS, Nyman A, Grönlund U, Bengtsson B. Characterisation of bacterial growth and antimicrobial susceptibility patterns in canine urinary tract infections. BMC Vet Res 2014; 10:217. [PMID: 25249356 PMCID: PMC4180317 DOI: 10.1186/s12917-014-0217-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 09/10/2014] [Indexed: 12/22/2022] Open
Abstract
Background Bacterial urinary tract infection (UTI) is a common reason for antimicrobial therapy in dogs. A reported increase in multi-drug resistance in canine bacterial pathogens, including resistance to extended-spectrum cephalosporins (ESC) is of concern as antimicrobial resistance complicates therapy in dogs. In addition, it is a possible public health concern. The objectives of this study were to investigate the relative prevalence of pathogens in urine samples from dogs with urinary tract infection sampled at referral hospitals, clinics and mixed veterinary practices and to investigate if this was influenced by sample material or by contamination of the culture. The second objective was to assess the susceptibility patterns to clinically relevant antimicrobials and to investigate if this was influenced by whether the samples originated from smaller clinics or from referral hospitals and to perform active screening for the presence of Enterobacteriaceae resistant to ESC. Results Escherichia coli was the most frequently isolated pathogen (68%) followed by staphylococci (11%). E. coli isolates were found significantly more often in pure culture than in contaminated samples. Staphylococcus pseudintermedius and Staphylococcus aureus isolates were significantly more prevalent in pre-incubated samples compared to samples submitted as non-incubated media. Susceptibility to the majority of the tested first-line antimicrobials was common. Multiresistance was rare, and these isolates were all susceptible to at least one relevant antimicrobial. Isolates in samples from small animal clinics or mixed veterinary practices were less likely to be susceptible compared to isolates originating from referral animal hospitals. ESC-resistant Enterobacteriacae isolates were found in one per cent of the positive cultures. Bacteria with transferable ESC resistance were confirmed in one dog. The gene demonstrated was blaCMY2. Conclusions Choice of sample material might influence the possibility of detecting Staphylococcus pseudintermedius and Staphylococcus aureus isolates in clinical cases of UTI in dogs. Based on the study results, use of first-line antimicrobials is a rational empirical antimicrobial therapy for the studied dog population. E. coli was the most prevalent pathogen, but prevalence of infection with ESC resistant Enterobacteriaceae including E. coli was low, as such isolates were found in only one per cent of the positive cultures.
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Harada K, Niina A, Shimizu T, Mukai Y, Kuwajima K, Miyamoto T, Kataoka Y. Phenotypic and molecular characterization of antimicrobial resistance in Proteus mirabilis isolates from dogs. J Med Microbiol 2014; 63:1561-1567. [PMID: 25187600 DOI: 10.1099/jmm.0.081539-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Large-scale monitoring of resistance to 14 antimicrobial agents was performed using 103 Proteus mirabilis strains isolated from dogs in Japan. Resistant strains were analysed to identify their resistance mechanisms. Rates of resistance to chloramphenicol, streptomycin, enrofloxacin, trimethoprim/sulfamethoxazole, kanamycin, ampicillin, ciprofloxacin, cephalothin, gentamicin, cefoxitin and cefotaxime were 20.4, 15.5, 12.6, 10.7, 9.7, 8.7, 5.8, 2.9, 2.9, 1.9 and 1.9%, respectively. No resistance to ceftazidime, aztreonam or imipenem was found. Class 1 and 2 integrases were detected in 2.9 and 11.7% of isolates, respectively. Class 1 integrons contained aadB or aadB-catB-like-blaOXA10-aadA1, whereas those of class 2 contained sat-aadA1, dhfr1-sat-aadA1 or none of the anticipated resistance genes. Of five distinct plasmid-mediated quinolone-resistance (PMQR) genes, only qnrD gene was detected in 1.9% of isolates. Quinolone-resistance determining regions (QRDRs) of gyrA and parC from 13 enrofloxacin-intermediate and -resistant isolates were sequenced. Seven strains had double mutations and three had single mutations. Three of nine ampicillin-resistant isolates harboured AmpC-type β-lactamases (i.e. blaCMY-2, blaCMY-4 and blaDHA-1). These results suggest that canine Proteus mirabilis deserves continued surveillance as an important reservoir of antimicrobial resistance determinants. This is the first report, to our knowledge, describing integrons, PMQRs and QRDR mutations in Proteus mirabilis isolates from companion animals.
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Affiliation(s)
- Kazuki Harada
- Department of Veterinary Internal Medicine, Tottori University, Minami 4-101, Koyama-Cho, Tottori-Shi, Tottori 680-8553, Japan
| | - Ayaka Niina
- Laboratory of Veterinary Microbiology, Nippon Veterinary and Life Science University, 1-7-1, Kyonan-cho, Musashino, Tokyo 180-8602, Japan
| | - Takae Shimizu
- Department of Veterinary Internal Medicine, Tottori University, Minami 4-101, Koyama-Cho, Tottori-Shi, Tottori 680-8553, Japan
| | - Yujiro Mukai
- Laboratory of Veterinary Microbiology, Nippon Veterinary and Life Science University, 1-7-1, Kyonan-cho, Musashino, Tokyo 180-8602, Japan
| | - Ken Kuwajima
- Laboratory of Veterinary Microbiology, Nippon Veterinary and Life Science University, 1-7-1, Kyonan-cho, Musashino, Tokyo 180-8602, Japan
| | - Tadashi Miyamoto
- Miyamoto Animal Hospital, 2265-8, Kurokawa, Yamaguchi-Shi, Yamaguchi 753-0851, Japan
| | - Yasushi Kataoka
- Laboratory of Veterinary Microbiology, Nippon Veterinary and Life Science University, 1-7-1, Kyonan-cho, Musashino, Tokyo 180-8602, Japan
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Shimizu T, Harada K, Kataoka Y. Mutant prevention concentration of orbifloxacin: comparison between Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus pseudintermedius of canine origin. Acta Vet Scand 2013; 55:37. [PMID: 23634902 PMCID: PMC3646708 DOI: 10.1186/1751-0147-55-37] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Accepted: 02/10/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The mutant prevention concentration (MPC) is an important parameter to evaluate the likelihood of growth of fluoroquinolone-resistant mutants for antimicrobial-pathogen combinations. The MPCs of fluoroquinolones for different canine pathogens have not been compared. In this study, we compared for the first time orbifloxacin MPCs between susceptible strains of Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus pseudintermedius of canine origin. METHODS More than 1010 CFU/ml of 10 strains of each bacterial species were inoculated onto Muller-Hinton agar supplemented with different concentrations of orbifloxacin from 1× to 64× minimum inhibitory concentration (MIC) and the MPCs were recorded. MICs of original strains and of mutants arising after exposure to sub-MPC concentrations (one per original strain) were determined in the presence or absence of efflux pump inhibitors (EPIs). The effects of quinolone resistance-determining region (QRDR) mutations were also examined. RESULTS MPCs were significantly higher for P. aeruginosa (16-128 μg/ml) than for E. coli (0.5-32 μg/ml). MPCs for S. pseudintermedius varied between the low-susceptible (16-128 μg/ml) and the high-susceptible strains (4-16 μg/ml) and were the most broadly distributed among the three species. Regarding resistance mechanisms, only one QRDR mutation in gyrA was found in all of the 10 mutants of E. coli and in 4 of the 10 mutants of P. aeruginosa, whereas mutations in both grlA and gyrA were found in 3 mutants and one mutation in grlA was found in 2 mutants among the 10 mutants of S. pseudintermedius. In the presence of an EPI, the MICs of P. aeruginosa mutants decreased markedly, those of E. coli mutants decreased moderately, and those of S. pseudintermedius mutants were unaffected. CONCLUSIONS MPCs of orbifloxacin vary between bacterial species of canine pathogens, possibly due to the diversity of the main fluoroquinolone resistance mechanism among these species. Therefore, the type of bacterial species should be taken into consideration when using fluoroquinolone drugs such as orbifloxacin in canines.
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Harada K, Nakai Y, Kataoka Y. Mechanisms of resistance to cephalosporin and emergence of O25b-ST131 clone harboring CTX-M-27 β-lactamase in extraintestinal pathogenic Escherichia coli from dogs and cats in Japan. Microbiol Immunol 2012; 56:480-5. [PMID: 22486529 DOI: 10.1111/j.1348-0421.2012.00463.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Thirty-three cefazolin-resistant extraintestinal pathogenic Escherichia coli strains from companion animals were screened for bla(CMY-1) , bla(CMY-2) , bla(SHV) , bla(TEM) , and bla(CTX-M) genes. Extended-spectrum β-lactamase-producing strains were further characterized by O serotyping and multilocus sequence typing. It was found that 20 and 17 isolates harbored TEM-1 and CMY-2 β-lactamases, respectively, and 13 isolates harbored both β-lactamases. One isolate harbored DHA-1 β-lactamase. Eleven isolates were found to possess CTX-M β-lactamases (CTX-M-27 [n= 6], CTX-M-14 [n= 3], CTX-M-15 [n= 1], and CTX-M-55 [n= 1]). Of 11 CTX-M-positive strains, four strains were O25b-ST131 clones harboring CTX-M-27, and the remaining seven strains belonged to O6-ST127, ONT-ST354, O159-ST539, O1-ST648, O8-ST1642, O25b-ST2042, and ONT-ST2178.
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Affiliation(s)
- Kazuki Harada
- Laboratory of Veterinary Microbiology, Nippon Veterinary and Life Science University, Musashino, Tokyo, Japan.
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Antimicrobial resistance, virulence profiles, and phylogenetic groups of fecal Escherichia coli isolates: a comparative analysis between dogs and their owners in Japan. Comp Immunol Microbiol Infect Dis 2012; 35:139-44. [PMID: 22252047 DOI: 10.1016/j.cimid.2011.12.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Revised: 12/16/2011] [Accepted: 12/19/2011] [Indexed: 11/24/2022]
Abstract
In this study, fecal Escherichia coli isolates (n=188) from 34 dog-owner pairs and 26 healthy control humans (2 isolates per individual) were tested for susceptibility to 6 antimicrobials and screened for virulence genes. Genetic diversity between canine and owner isolates was evaluated by pulsed-field gel electrophoresis (PFGE). Canine isolates exhibited significantly different rates of resistance to four and two antimicrobials, compared to control and owner isolates, respectively. Of the genes examined, the prevalence of sfa, hly, and cnf genes in canine isolates were higher than in control isolates, but not than in owner isolates. These results suggest that characteristics of owner isolates are somewhat similar to canine isolates, compared to isolates from non-dog owners. In addition, PFGE analysis revealed that transfer of E. coli between owners and their dogs had occurred within 3/34 (8.8%) households. Considering the effects of dog ownership on the population of E. coli isolates from owners, further epidemiological studies are required.
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