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Jeong J, Lee JY, Moon JS, Kang MS, Kang SI, Lee OM, Lee SH, Kwon YK, Chae M, Cho S. Virulence Genes, Antimicrobial Resistance, and Genotypes of Campylobacter jejuni Isolated from Chicken Slaughterhouses in South Korea. Foodborne Pathog Dis 2024. [PMID: 38608218 DOI: 10.1089/fpd.2023.0144] [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: 04/14/2024] Open
Abstract
Campylobacter jejuni represents one of the leading causes of bacterial gastroenteritis in humans and is primarily linked to chicken meat contamination. In the present study, we analyzed the virulence and survival genes, antimicrobial resistance, and the clonal distribution of 50 C. jejuni isolates obtained from various sources in 14 chicken slaughterhouses across 8 provinces in South Korea from 2019 to 2022. Furthermore, we determined their genetic relatedness to human-derived isolates registered in PubMLST using multilocus sequence typing (MLST). All isolates harbored various virulence and survival genes (flhA, cadF, cdtA, cdtC, cmeA, and sodB) out of 17 tested genes, as confirmed via polymerase chain reaction analysis. Adherence factor gene virB11 was not detected in any isolate. All isolates harbored 12 or more virulence and survival genes. Antimicrobial susceptibility testing indicated that ciprofloxacin resistance was the most prevalent (84.0%), followed by nalidixic acid (82.0%) and tetracycline (52.0%) resistance. MLST analysis of the isolates revealed 18 sequence types (STs), including four new ones. Overlapping STs between chicken slaughterhouse and human-derived isolates included ST42, ST45, ST50, ST137, ST354, and ST464. Our study identified 11 clonal complexes (CCs), with CC-21 being the most prevalent in both human and chicken slaughterhouse-derived isolates. This study provides comprehensive insights into recent C. jejuni isolates from chicken slaughterhouses, including data on quinolone resistance and virulence factors. The MLST-based genetic relatedness between isolates from humans and chicken slaughterhouses in this study suggests the potential of C. jejuni transmission from chickens to humans through the food chain. This study suggests the need for improved management practices in chicken slaughterhouses to reduce the transmission of chicken slaughterhouse-derived C. jejuni to humans.
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Affiliation(s)
- Jiyeon Jeong
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
- Department of Veterinary Medicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Ji-Youn Lee
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
| | - Jin-San Moon
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
| | - Min-Su Kang
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
| | - Sung-Il Kang
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
| | - O-Mi Lee
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
| | - So-Hee Lee
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
| | - Yong-Kuk Kwon
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
| | - Myeongju Chae
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
| | - Seongbeom Cho
- Department of Veterinary Medicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
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Kim SY, An D, Jeong H, Kim J. Antimicrobial Susceptibility Patterns and Genetic Diversity of Campylobacter spp. Isolates from Patients with Diarrhea in South Korea. Microorganisms 2024; 12:94. [PMID: 38257921 PMCID: PMC10819060 DOI: 10.3390/microorganisms12010094] [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: 11/20/2023] [Revised: 12/18/2023] [Accepted: 12/19/2023] [Indexed: 01/24/2024] Open
Abstract
This study aimed to characterize the latest antimicrobial resistance patterns and genetic diversity of Campylobacter spp. isolated from patients with acute diarrhea in Korea. In total, 371 clinical isolates (361 Campylobacter jejuni and 10 Campylobacter coli) were collected from patients with diarrhea in 106 medical institutions of six provinces during the seasonal peak (April-September 2022) in South Korea. We then assessed their antimicrobial susceptibility to eight antimicrobial agents and performed multilocus sequence typing (MLST). This study investigated the antimicrobial resistance (AMR) profiles to tetracycline (32.3%), nalidixic acid (64.9%), and ciprofloxacin (83.3%), confirming high levels of the latter even after its Korean ban in 2010. However, tetracycline resistance displayed a decreasing trend. Alternatively, significantly lower resistance rates to clindamycin (0.8%), azithromycin (0.53%), erythromycin (0.53%), and gentamicin (0.53%) as well as absolute susceptibility to florfenicol (0%) were observed. Four C. jejuni and three C. coli isolates (7/371, 1.88%) were classified as multidrug-resistant (MDR) to at least three antimicrobial classes. MLST identified a high genetic diversity with 21 clonal complexes (CCs) and sixty-six sequence types (STs), including eight novel STs. The high CC frequency of C. jejuni comprised CC21 (37.7%), CC22 (13.8%), and CC206 (9.4%), while C. coli was predominated by CC828 (90%). The high CC21 and CC828 strain prevalence in this study was consistent with their worldwide distribution. This study highlights that quinolone- and tetracycline-resistant Campylobacter circulate in Korea with diverse genotypes, providing important information that could contribute to controlling and preventing increasing antimicrobial resistance in patients.
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Affiliation(s)
- So Yeon Kim
- Division of Zoonotic and Vector-Borne Disease Research, Center for Infectious Diseases Research, Korea National Institute of Health, Cheongju 28160, Republic of Korea;
| | - Dongheui An
- Division of Clinical Microbiology, Department of Laboratory Medicine, Seegene Medical Foundation, Seoul 04805, Republic of Korea; (D.A.); (H.J.)
| | - Hyemi Jeong
- Division of Clinical Microbiology, Department of Laboratory Medicine, Seegene Medical Foundation, Seoul 04805, Republic of Korea; (D.A.); (H.J.)
| | - Jonghyun Kim
- Division of Zoonotic and Vector-Borne Disease Research, Center for Infectious Diseases Research, Korea National Institute of Health, Cheongju 28160, Republic of Korea;
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Aydin F, Kayman T, Abay S, Hizlisoy H, Saticioğlu İB, Karakaya E, Sahin O. MLST genotypes and quinolone resistance profiles of Campylobacter jejuni isolates from various sources in Turkey. Int J Food Microbiol 2023; 391-393:110137. [PMID: 36842255 DOI: 10.1016/j.ijfoodmicro.2023.110137] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/17/2023] [Accepted: 02/10/2023] [Indexed: 02/22/2023]
Abstract
This study was conducted to determine the overall genetic diversity, as well as prevalence and mechanisms of resistance to quinolone antibiotics of 178 Campylobacter jejuni isolated from humans, cattle, dogs, and chickens in Turkey. Multilocus sequence typing (MLST) and E-test were performed for genotyping and antimicrobial susceptibility testing, respectively. Mismatch Amplification Mutation Assay, Polymerase Chain Reaction (MAMA-PCR) was used to detect point mutations associated with quinolone resistance. Of the 178 isolates tested, 151 were included in 21 clonal complexes (CCs); the remaining 27 isolates did not belong to any existing CCs. CC21, CC353, CC206, and CC257 were the predominant clones, representing 38 % of all C. jejuni isolates tested. The isolates were assigned to 78 different sequence types (STs), three of which were novel (ST 8082, ST 8083, and ST 8084). Resistance to quinolones was found in 73 (41 %) of the isolates (42.85 %, 2.85 %, 20.58 %, and 43.75 % in human, cattle, dog, and chicken isolates, respectively). All of the resistant isolates had Thr-86-Ile mutation in the gyrA gene. The highest Sorensen coefficient index was detected for human/chicken meat and human/dog C. jejuni isolates (Ss = 0.71), suggesting a strong link between the isolates from respective sources. The Simpson diversity index of C. jejuni isolates analyzed was detected between 0.92 and 0.98. The study provides detailed information on the quinolone resistance and MLST-based genetic relatedness of C. jejuni isolates from humans, cattle, dog, and broiler meat in Turkey for the first time, enabling a better understanding of the transmission pathways of C. jejuni in this country. Our results suggest that broiler meat and dogs may be the most important sources of human campylobacteriosis in Turkey.
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Affiliation(s)
- Fuat Aydin
- Erciyes University, Faculty of Veterinary Medicine, Department of Microbiology, Kayseri, Türkiye
| | - Tuba Kayman
- Kırıkkale University, Faculty of Medicine, Department of Medical Microbiology, Kırıkkale, Türkiye
| | - Seçil Abay
- Erciyes University, Faculty of Veterinary Medicine, Department of Microbiology, Kayseri, Türkiye.
| | - Harun Hizlisoy
- Erciyes University, Faculty of Veterinary Medicine, Department of Veterinary Public Health, Kayseri, Türkiye
| | - İzzet Burçin Saticioğlu
- Bursa Uludag University, Faculty of Veterinary Medicine, Department of Aquatic Animal Diseases, Bursa, Türkiye
| | - Emre Karakaya
- Erciyes University, Faculty of Veterinary Medicine, Department of Microbiology, Kayseri, Türkiye
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, USA
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Bokhary H, Pangesti KNA, Rashid H, Abd El Ghany M, Hill-Cawthorne GA. Travel-Related Antimicrobial Resistance: A Systematic Review. Trop Med Infect Dis 2021; 6:11. [PMID: 33467065 PMCID: PMC7838817 DOI: 10.3390/tropicalmed6010011] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 01/09/2021] [Accepted: 01/11/2021] [Indexed: 12/26/2022] Open
Abstract
There is increasing evidence that human movement facilitates the global spread of resistant bacteria and antimicrobial resistance (AMR) genes. We systematically reviewed the literature on the impact of travel on the dissemination of AMR. We searched the databases Medline, EMBASE and SCOPUS from database inception until the end of June 2019. Of the 3052 titles identified, 2253 articles passed the initial screening, of which 238 met the inclusion criteria. The studies covered 30,060 drug-resistant isolates from 26 identified bacterial species. Most were enteric, accounting for 65% of the identified species and 92% of all documented isolates. High-income countries were more likely to be recipient nations for AMR originating from middle- and low-income countries. The most common origin of travellers with resistant bacteria was Asia, covering 36% of the total isolates. Beta-lactams and quinolones were the most documented drug-resistant organisms, accounting for 35% and 31% of the overall drug resistance, respectively. Medical tourism was twice as likely to be associated with multidrug-resistant organisms than general travel. International travel is a vehicle for the transmission of antimicrobial resistance globally. Health systems should identify recent travellers to ensure that adequate precautions are taken.
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Affiliation(s)
- Hamid Bokhary
- School of Public Health, The University of Sydney, Sydney, NSW 2006, Australia; (K.N.A.P.); (G.A.H.-C.)
- University Medical Center, Umm Al-Qura University, Al Jamiah, Makkah, Makkah Region 24243, Saudi Arabia
- The Marie Bashir Institute for Infectious Diseases and Biosecurity, The University of Sydney, Westmead, NSW 2145, Australia; (H.R.); or (M.A.E.G.)
- The Westmead Institute for Medical Research, Westmead, NSW 2145, Australia
| | - Krisna N. A. Pangesti
- School of Public Health, The University of Sydney, Sydney, NSW 2006, Australia; (K.N.A.P.); (G.A.H.-C.)
- The Westmead Institute for Medical Research, Westmead, NSW 2145, Australia
| | - Harunor Rashid
- The Marie Bashir Institute for Infectious Diseases and Biosecurity, The University of Sydney, Westmead, NSW 2145, Australia; (H.R.); or (M.A.E.G.)
- National Centre for Immunisation Research and Surveillance (NCIRS), Kids Research, The Children’s Hospital at Westmead, Westmead, NSW 2145, Australia
| | - Moataz Abd El Ghany
- The Marie Bashir Institute for Infectious Diseases and Biosecurity, The University of Sydney, Westmead, NSW 2145, Australia; (H.R.); or (M.A.E.G.)
- The Westmead Institute for Medical Research, Westmead, NSW 2145, Australia
- The Westmead Clinical School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
| | - Grant A. Hill-Cawthorne
- School of Public Health, The University of Sydney, Sydney, NSW 2006, Australia; (K.N.A.P.); (G.A.H.-C.)
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Epidemiological relationships of Campylobacter jejuni strains isolated from humans and chickens in South Korea. J Microbiol 2016; 55:13-20. [PMID: 28035601 DOI: 10.1007/s12275-017-6308-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 09/19/2016] [Accepted: 09/20/2016] [Indexed: 10/20/2022]
Abstract
Thirty-nine human isolates of Campylobacter jejuni obtained from a national university hospital during 2007-2010 and 38 chicken isolates of C. jejuni were collected from poultry farms during 2009-2010 in South Korea were used in this study. Campylobacter genomic species and virulence-associated genes were identified by PCR. Pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST) were performed to compare their genetic relationships. All isolates were highly resistant to ciprofloxacin, nalidixic acid, and tetracycline. Of all isolates tested, over 94% contained seven virulence associated genes (flaA, cadF, racR, dnaJ, cdtA, cdtB, and cdtC). All isolates were classified into 39 types by PFGE clustering with 90% similarity. Some chicken isolates were incorporated into some PFGE types of human isolates. MLST analysis for the 39 human isolates and 38 chicken isolates resulted in 14 and 23 sequence types (STs), respectively, of which 10 STs were new. STs overlapped in both chicken and human isolates included ST-21, ST-48, ST-50, ST-51, and ST-354, of which ST-21 was the predominant ST in both human and chicken isolates. Through combined analysis of PFGE types and STs, three chicken isolates were clonally related to the three human isolates associated with food poisoning (VII-ST-48, XXII-ST-354, and XXVIII-ST-51). They were derived from geographically same or distinct districts. Remarkably, clonal spread of food poisoning pathogens between animals and humans was confirmed by population genetic analysis. Consequently, contamination of campylobacters with quinolone resistance and potential virulence genes in poultry production and consumption may increase the risk of infections in humans.
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Kim JS, Lee MY, Kim SJ, Jeon SE, Cha I, Hong S, Chung GT, Huh MJ, Kang YH, Yoo CK, Kim J. High-Level Ciprofloxacin-Resistant Campylobacter jejuni Isolates Circulating in Humans and Animals in Incheon, Republic of Korea. Zoonoses Public Health 2016; 63:545-554. [PMID: 27234414 DOI: 10.1111/zph.12262] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Indexed: 11/26/2022]
Abstract
Campylobacter jejuni is one of the major causative pathogens of outbreaks or sporadic cases of diarrhoeal diseases worldwide. In this study, we compared the phenotypic and genetic characteristics of C. jejuni isolates of human and food-producing animal origins in Korea and examined the genetic relatedness between these two groups of isolates. Regardless of isolation source, all C. jejuni isolates harboured four virulence genes, cadF, cdtB, ciaB and racR, whereas the wlaN and virB11 genes were more frequently observed in human isolates. Antimicrobial susceptibility testing showed that the majority of C. jejuni isolates displayed high-level resistance to fluoroquinolone (95.2%) or tetracycline (76.2%) antibiotics, and 12.4% of isolates exhibited multidrug resistance (more than three classes of antibiotics tested). Pulsed-field gel electrophoresis (PFGE) of all Campylobacter isolates revealed 51 different SmaI-PFGE patterns and six major clusters containing both human and animal isolates. These results indicate that genetically diverse strains of C. jejuni with antimicrobial drug-resistance and virulence properties have prevailed in Incheon. Nevertheless, some particular populations continue to circulate within the community, providing the evidence for an epidemiological link of C. jejuni infections between humans and food-producing animals. Therefore, the continued monitoring and surveillance of C. jejuni isolates of human and food-producing animal origins are required for public health and food safety.
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Affiliation(s)
- J S Kim
- Division of Enteric Diseases, Center for Infectious Diseases, Korea National Institute of Health, Cheongju-si, Chungcheongbuk-do, Korea
| | - M Y Lee
- Incheon Institute of Public Health and Environment Research, Jung-gu, Incheon, Korea
| | - S J Kim
- Division of Enteric Diseases, Center for Infectious Diseases, Korea National Institute of Health, Cheongju-si, Chungcheongbuk-do, Korea
| | - S-E Jeon
- Division of Enteric Diseases, Center for Infectious Diseases, Korea National Institute of Health, Cheongju-si, Chungcheongbuk-do, Korea
| | - I Cha
- Division of Enteric Diseases, Center for Infectious Diseases, Korea National Institute of Health, Cheongju-si, Chungcheongbuk-do, Korea
| | - S Hong
- Division of Enteric Diseases, Center for Infectious Diseases, Korea National Institute of Health, Cheongju-si, Chungcheongbuk-do, Korea
| | - G T Chung
- Division of Enteric Diseases, Center for Infectious Diseases, Korea National Institute of Health, Cheongju-si, Chungcheongbuk-do, Korea
| | - M-J Huh
- Incheon Institute of Public Health and Environment Research, Jung-gu, Incheon, Korea
| | - Y-H Kang
- Division of Enteric Diseases, Center for Infectious Diseases, Korea National Institute of Health, Cheongju-si, Chungcheongbuk-do, Korea
| | - C-K Yoo
- Division of Enteric Diseases, Center for Infectious Diseases, Korea National Institute of Health, Cheongju-si, Chungcheongbuk-do, Korea
| | - J Kim
- Division of Enteric Diseases, Center for Infectious Diseases, Korea National Institute of Health, Cheongju-si, Chungcheongbuk-do, Korea.
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Ghorbanalizadgan M, Bakhshi B, Najar-Peerayeh S. PCR-RFLP Provides Discrimination for Total flaA Sequence Analysis in Clinical Campylobacter jejuni Isolates. Jpn J Infect Dis 2016; 69:373-7. [PMID: 26743147 DOI: 10.7883/yoken.jjid.2015.386] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The aims of this study were to determine the genetic relatedness among 20 clinical Campylobacter jejuni samples isolated from children with diarrhea in Iran and to introduce the best method of discrimination based on flagellin gene (flaA) sequence divergence. A total of 400 stool specimens were obtained from children under 5 years of age from July 2012 to June 2013. Primers were designed based on conserved sequences flanking the flaA gene that encompassed and amplified the entire flaA gene and followed by sequencing and data analysis with MEGA version 6.0.6 software. Ninety amino acids and 560 nucleotide polymorphic sequences were detected within 1,681 bp of the flaA sequence of which 43 (2.5%) and 12 (0.7%) were singletons, respectively. New repeat boxes within the flaA sequences were found in this study. Unweighted Pair Group Method with Arithmetic Mean dendrogram based on nucleotides of the full length flaA gene, the flaA short variable region gene and the in silico flaA phylogenic tree of DdeI restriction fragment length polymorphism (RFLP) profiles produced very similar clustering with a diversity index of 0.86 for each of the 3 methods. We conclude that flaA typing based on DdeI RFLP of the PCR products is a cheap, rapid, and reliable method for the epidemiological study of C. jejuni isolates of clinical origin in resource-limited regions or in large-scale population surveillance.
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