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Watanabe N, Watari T, Otsuka Y, Ito M, Yamagata K, Fujioka M. Antimicrobial resistance and AmpC production in ESBL-producing Klebsiella pneumoniae and Klebsiella quasipneumoniae: A retrospective study in Japanese clinical isolates. PLoS One 2024; 19:e0303353. [PMID: 38743684 PMCID: PMC11093370 DOI: 10.1371/journal.pone.0303353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 04/23/2024] [Indexed: 05/16/2024] Open
Abstract
INTRODUCTION The study of Klebsiella quasipneumoniae, Klebsiella variicola, and AmpC production in extended-spectrum β-lactamase (ESBL)-producing Klebsiella in Japan is limited, and existing data are insufficient. This study aims to characterize Klebsiella species, determine AmpC production rates, and analyze antimicrobial resistance patterns in ESBL-producing Klebsiella isolates in Japan. METHODS A total of 139 clinical isolates of ESBL-producing Klebsiella were collected in Japan, along with their corresponding antimicrobial susceptibility profiles. The isolates were identified using a web-based tool. ESBL genes within the isolates were identified using multiplex PCR. Screening for AmpC-producing isolates was performed using cefoxitin disks, followed by multiplex PCR to detect the presence of AmpC genes. Antimicrobial resistance patterns were analyzed across the predominant ESBL genotypes. RESULTS The web-based tool identified 135 isolates (97.1%) as Klebsiella pneumoniae and 4 (2.9%) as K. quasipneumoniae subsp. similipneumoniae, with no instances of K. variicola detected. Among K. pneumoniae, the CTX-M-1 group emerged as the predominant genotype (83/135, 61.5%), followed by K. quasipneumoniae subsp. similipneumoniae (3/4, 75.0%). The CTX-M-9 group was the second most prevalent genotype in K. pneumoniae (45/135, 33.3%). The high resistance rates were observed for quinolones (ranging from 46.7% to 63.0%) and trimethoprim/sulfamethoxazole (78.5%). The CTX-M-1 group exhibited higher resistance to ciprofloxacin (66/83, 79.5%) compared to the CTX-M-9 group (18/45, 40.0%), a trend also observed for levofloxacin and trimethoprim/sulfamethoxazole. Among the 16 isolates that tested positive during AmpC screening, only one K. pneumoniae isolates (0.7%) were confirmed to carry the AmpC gene. CONCLUSION Klebsiella pneumoniae with the CTX-M-1 group is the most common ESBL-producing Klebsiella in Japan and showed a low proportion of AmpC production. These isolates are resistant to quinolones and trimethoprim/sulfamethoxazole, highlighting the challenge of managing this pathogen. The findings underscore the importance of broader research and continuous monitoring to address the resistance patterns of ESBL-producing Klebsiella.
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Affiliation(s)
- Naoki Watanabe
- Department of Clinical Laboratory, Kameda Medical Center, Kamogawa, Chiba, Japan
- Graduate School of Health Sciences, Hirosaki University, Hirosaki, Aomori, Japan
| | - Tomohisa Watari
- Department of Clinical Laboratory, Kameda Medical Center, Kamogawa, Chiba, Japan
| | - Yoshihito Otsuka
- Department of Clinical Laboratory, Kameda Medical Center, Kamogawa, Chiba, Japan
| | - Masahiko Ito
- Sapporo Clinical Laboratory Inc., Chuo-ku, Sapporo, Hokkaido, Japan
| | - Kazufumi Yamagata
- Graduate School of Health Sciences, Hirosaki University, Hirosaki, Aomori, Japan
| | - Miyuki Fujioka
- Graduate School of Health Sciences, Hirosaki University, Hirosaki, Aomori, Japan
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Elawady BA, Mahmoud NR, Badawi HES, Badr AEE, Gohar NM. Antimicrobial activity of cefepime-tazobactam combination against extended spectrum beta-lactamase and/or AmpC beta-lactamase- producing gram-negative bacilli. BMC Infect Dis 2024; 24:434. [PMID: 38654148 DOI: 10.1186/s12879-024-09296-y] [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: 11/24/2023] [Accepted: 04/05/2024] [Indexed: 04/25/2024] Open
Abstract
BACKGROUND The problem of resistance to beta-lactam antibiotics, which is caused by ESBL and AmpC β-lactamases, is getting worse globally. Infections caused by bacterial isolates harboring these enzymes are difficult to treat with carbapenems being the sole effective treatment option for such infections. The objective of this study was to determine the frequency of ESBLs and AmpC-producing Gram-negative bacilli isolated from clinical specimens and to evaluate the sensitivity of cefepime-tazobactam combination against them. METHODS This is an observational cross-sectional study carried out on 100 Gram-negative bacilli at Theodor Bilharz Research Institute Hospital during the period from February 2015 to January 2016. ESBL production was screened by using the disc diffusion test followed by confirmation by the combined disc confirmatory test, the screening for AmpC production was conducted using the cefoxitin disc test, which was subsequently confirmed by the AmpC disc test. Isolates confirmed positive for ESBL and/ or AmpC production were investigated for their susceptibility to antibiotics. RESULTS Among 100 Gram-negative bacilli, 44 isolates were confirmed as ESBL producers by the combined disc confirmatory test out of 56 isolates that tested positive for ESBL production through the disc diffusion test. The presence of AmpC production was assessed using the cefoxitin disc test, 32 isolates were screened to be AmpC producers, and the AmpC disc test confirmed AmpC production in 9 isolates of them. Using the Mast® D68C set, 32 isolates were ESBL producers, 3 were AmpC producers, and 4 isolates were ESBL/AmpC co-producers. The highest sensitivity was to cefepime-tazobactam (91.48%) followed by the carbapenems. CONCLUSION Cefepime-tazobactam showed remarkable activity against ESBL and/or AmpC-producing Gram-negative bacilli and may be considered as a therapeutic alternative to carbapenems.
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Affiliation(s)
- Basma Ahmed Elawady
- Medical Microbiology and Immunology Department, Faculty of Medicine, Cairo University, Cairo, Egypt.
| | - Noha Refaat Mahmoud
- Medical Microbiology and Immunology, Theodor Bilharz Research Institute, Warraq Al Hadar, Egypt
| | - Hala El-Sayed Badawi
- Medical Microbiology and Immunology, Theodor Bilharz Research Institute, Warraq Al Hadar, Egypt
| | - Azza Essam Eldin Badr
- Medical Microbiology and Immunology Department, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Noha Mahmoud Gohar
- Medical Microbiology and Immunology Department, Faculty of Medicine, Cairo University, Cairo, Egypt
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Lu T, Das S, Howlader DR, Picking WD, Picking WL. Shigella Vaccines: The Continuing Unmet Challenge. Int J Mol Sci 2024; 25:4329. [PMID: 38673913 PMCID: PMC11050647 DOI: 10.3390/ijms25084329] [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: 02/27/2024] [Revised: 04/09/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
Shigellosis is a severe gastrointestinal disease that annually affects approximately 270 million individuals globally. It has particularly high morbidity and mortality in low-income regions; however, it is not confined to these regions and occurs in high-income nations when conditions allow. The ill effects of shigellosis are at their highest in children ages 2 to 5, with survivors often exhibiting impaired growth due to infection-induced malnutrition. The escalating threat of antibiotic resistance further amplifies shigellosis as a serious public health concern. This review explores Shigella pathology, with a primary focus on the status of Shigella vaccine candidates. These candidates include killed whole-cells, live attenuated organisms, LPS-based, and subunit vaccines. The strengths and weaknesses of each vaccination strategy are considered. The discussion includes potential Shigella immunogens, such as LPS, conserved T3SS proteins, outer membrane proteins, diverse animal models used in Shigella vaccine research, and innovative vaccine development approaches. Additionally, this review addresses ongoing challenges that necessitate action toward advancing effective Shigella prevention and control measures.
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Affiliation(s)
- Ti Lu
- Department of Veterinary Pathobiology and Bond Life Science Center, University of Missouri, Columbia, MO 65201, USA; (D.R.H.); (W.D.P.)
| | - Sayan Das
- Department of Microbial Pathogenesis, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA;
| | - Debaki R. Howlader
- Department of Veterinary Pathobiology and Bond Life Science Center, University of Missouri, Columbia, MO 65201, USA; (D.R.H.); (W.D.P.)
| | - William D. Picking
- Department of Veterinary Pathobiology and Bond Life Science Center, University of Missouri, Columbia, MO 65201, USA; (D.R.H.); (W.D.P.)
| | - Wendy L. Picking
- Department of Veterinary Pathobiology and Bond Life Science Center, University of Missouri, Columbia, MO 65201, USA; (D.R.H.); (W.D.P.)
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Vijayakumar S, Kumar H, Basu S, Chandy S, Anbarasu A, Manoharan A, Ramaiah S. Changing Landscape of Antimicrobial Resistance in Neonatal Sepsis: An in silico Analyses of Multidrug Resistance in Klebsiella pneumoniae. Pediatr Infect Dis J 2024:00006454-990000000-00838. [PMID: 38621154 DOI: 10.1097/inf.0000000000004358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
BACKGROUND Neonatal sepsis poses a critical healthcare concern, as multidrug-resistant Klebsiella pneumoniae (K. pneumoniae) infections are on the rise. Understanding the antimicrobial susceptibility patterns and underlying resistance mechanism is crucial for effective treatment. OBJECTIVES This study aimed to comprehensively investigate the antimicrobial susceptibility patterns of K. pneumoniae strains responsible for neonatal sepsis using in silico tools. We sought to identify trends and explore reasons for varying resistance levels, particularly for β-lactams and fluoroquinolone. METHODS K. pneumoniae isolated from neonates at Kanchi Kamakoti CHILDS Trust Hospital (2017-2020) were analyzed for antimicrobial resistance. Elevated resistance to β-lactam and fluoroquinolone antibiotics was further investigated through molecular docking and interaction analysis. β-lactam affinity with penicillin-binding proteins and β-lactamases was examined. Mutations in ParC and GyrA responsible for quinolone resistance were introduced to investigate ciprofloxacin interactions. RESULTS Of 111 K. pneumoniae blood sepsis isolates in neonates, high resistance was detected to β-lactams such as cefixime (85.91%, n = 71), ceftriaxone (84.9%, n = 106), cefotaxime (84.9%, n = 82) and fluoroquinolone (ciprofloxacin- 79.44%, n = 107). Molecular docking revealed low β-lactam binding toward penicillin-binding proteins and higher affinities for β-lactamases, attributing to the reduced β-lactam efficiency. Additionally, ciprofloxacin showed decreased affinity toward mutant ParC and GyrA in comparison to their corresponding wild-type proteins. CONCLUSION Our study elucidates altered resistance profiles in neonatal sepsis caused by K. pneumoniae, highlighting mechanisms of β-lactam and fluoroquinolone resistance. It underscores the urgent need for the development of sustainable therapeutic alternatives to address the rising antimicrobial resistance in neonatal sepsis.
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Affiliation(s)
- Santhiya Vijayakumar
- From the Department of Integrative Biology
- Medical and Biological Computing Laboratory
| | - Hithesh Kumar
- Medical and Biological Computing Laboratory
- Department of Bio-Sciences, School of Biosciences and Technology (SBST), Vellore Institute of Technology (VIT), Vellore
| | - Soumya Basu
- Department of Biotechnology, NIST University, Brahmapur
| | - Sara Chandy
- Department of Research, The CHILDS Trust Medical Research Foundation and Kanchi Kamakoti CHILDS Trust Hospital, Chennai
| | - Anand Anbarasu
- Medical and Biological Computing Laboratory
- Department of Biotechnology, School of Biosciences and Technology (SBST), Vellore Institute of Technology (VIT), Vellore, India
| | - Anand Manoharan
- Department of Research, The CHILDS Trust Medical Research Foundation and Kanchi Kamakoti CHILDS Trust Hospital, Chennai
| | - Sudha Ramaiah
- Medical and Biological Computing Laboratory
- Department of Bio-Sciences, School of Biosciences and Technology (SBST), Vellore Institute of Technology (VIT), Vellore
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Rizi KS, Aryan E, Youssefi M, Ghazvini K, Meshkat Z, Amini Y, Safdari H, Derakhshan M, Farsiani H. Characterization of carbapenem-resistant Escherichia coli and Klebsiella: a role for AmpC-producing isolates. Future Microbiol 2023; 18:215-223. [PMID: 37129534 DOI: 10.2217/fmb-2021-0211] [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] [Indexed: 05/03/2023] Open
Abstract
Aim: This study aimed to investigate the role of AmpC enzymes in carbapenem resistance among AmpC/extended-spectrum β-lactamase (ESBL)-producing clinical isolates of Escherichia coli and Klebsiella spp. Methods: Fifty-six bacterial strains that were AmpC producers were examined. The antibiotic susceptibility test was performed by the disk diffusion and E-test. The prevalence of the plasmid carbapenemase was determined using PCR. Results: The resistance to meropenem in the AmpC+/ESBL+ group was 64%, higher than that reported for the AmpC-/ESBL+ group. Ten isolates of the carbapenem-resistant AmpC producers were negative for carbapenemase-encoding genes. Conclusion: Carbapenem resistance among AmpC-producing isolates with negative results for carbapenemase-encoding genes potentially demonstrates the role of AmpC enzymes among these isolates.
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Affiliation(s)
- Kobra S Rizi
- Department of Microbiology & Virology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Antimicrobial Resistance Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ehsan Aryan
- Antimicrobial Resistance Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Masoud Youssefi
- Antimicrobial Resistance Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Kiarash Ghazvini
- Antimicrobial Resistance Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zahra Meshkat
- Antimicrobial Resistance Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Yousef Amini
- Infectious Disease & Tropical Medicine Research Center, Resistant Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Hadi Safdari
- Antimicrobial Resistance Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Derakhshan
- Antimicrobial Resistance Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hadi Farsiani
- Antimicrobial Resistance Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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Sanches MS, Silva LC, da Silva CR, Montini VH, de Oliva BHD, Guidone GHM, Nogueira MCL, Menck-Costa MF, Kobayashi RKT, Vespero EC, Rocha SPD. Prevalence of Antimicrobial Resistance and Clonal Relationship in ESBL/AmpC-Producing Proteus mirabilis Isolated from Meat Products and Community-Acquired Urinary Tract Infection (UTI-CA) in Southern Brazil. Antibiotics (Basel) 2023; 12:antibiotics12020370. [PMID: 36830280 PMCID: PMC9952622 DOI: 10.3390/antibiotics12020370] [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: 12/19/2022] [Revised: 02/06/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023] Open
Abstract
The present study aimed to evaluate the prevalence of antimicrobial resistance and clonal relationships in Proteus mirabilis isolated from chicken meat, beef, pork, and community-acquired urinary tract infections (UTI-CA). Chicken meat isolates showed the highest multidrug resistance (MDR), followed by those from pork and UTI-CA, whereas beef had relatively few MDR strains. All sources had strains that carried blaCTX-M-65, whereas blaCTX-M-2 and blaCMY-2 were only detected in chicken meat and UTI-CA isolates. This indicates that chicken meat should be considered an important risk factor for the spread of P. mirabilis carrying ESBL and AmpC. Furthermore, ESBL/AmpC producing strains were resistant to a greater number of antimicrobials and possessed more resistance genes than non-producing strains. In addition, the antimicrobial resistance genes qnrD, aac(6')-Ib-cr, sul1, sul2, fosA3, cmlA, and floR were also found. Molecular typing showed a genetic similarity between chicken meat and UTI-CA isolates, including some strains with 100% similarity, indicating that chicken can be a source of P. mirabilis causing UTI-CA. It was concluded that meat, especially chicken meat, can be an important source of dissemination of multidrug-resistant P. mirabilis in the community.
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Affiliation(s)
- Matheus Silva Sanches
- Laboratory of Bacteriology, Center of Biological Sciences, Department of Microbiology, State University of Londrina, Londrina P.O. Box 10.011, Brazil
| | - Luana Carvalho Silva
- Laboratory of Bacteriology, Center of Biological Sciences, Department of Microbiology, State University of Londrina, Londrina P.O. Box 10.011, Brazil
| | - Caroline Rodrigues da Silva
- Microorganism Research Center, Health Sciences Center, Department of Dermatological, Infectious and Parasitic Diseases, Medical School of São José do Rio Preto, São José do Rio Preto P.O. Box 15.090, Brazil
| | - Victor Hugo Montini
- Laboratory of Bacteriology, Center of Biological Sciences, Department of Microbiology, State University of Londrina, Londrina P.O. Box 10.011, Brazil
| | - Bruno Henrique Dias de Oliva
- Laboratory of Bacteriology, Center of Biological Sciences, Department of Microbiology, State University of Londrina, Londrina P.O. Box 10.011, Brazil
| | - Gustavo Henrique Migliorini Guidone
- Laboratory of Bacteriology, Center of Biological Sciences, Department of Microbiology, State University of Londrina, Londrina P.O. Box 10.011, Brazil
| | - Mara Corrêa Lelles Nogueira
- Microorganism Research Center, Health Sciences Center, Department of Dermatological, Infectious and Parasitic Diseases, Medical School of São José do Rio Preto, São José do Rio Preto P.O. Box 15.090, Brazil
| | - Maísa Fabiana Menck-Costa
- Laboratory of Basic and Applied Bacteriology, Center of Biological Sciences, Department of Microbiology, State University of Londrina, Londrina P.O. Box 10.011, Brazil
| | - Renata Katsuko Takayama Kobayashi
- Laboratory of Basic and Applied Bacteriology, Center of Biological Sciences, Department of Microbiology, State University of Londrina, Londrina P.O. Box 10.011, Brazil
| | - Eliana Carolina Vespero
- Department of Pathology, Health Sciences Center, Clinical and Toxicological Analysis, University Hospital of Londrina, State University of Londrina, Londrina P.O. Box 10.011, Brazil
| | - Sergio Paulo Dejato Rocha
- Laboratory of Bacteriology, Center of Biological Sciences, Department of Microbiology, State University of Londrina, Londrina P.O. Box 10.011, Brazil
- Correspondence: ; Tel.: +55-43-3371-4494
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Calero-Cáceres W, Rodríguez K, Medina A, Medina J, Ortuño-Gutiérrez N, Sunyoto T, Dias CAG, Bastidas-Caldes C, Ramírez MS, Harries AD. Genomic insights of mcr-1 harboring Escherichia coli by geographical region and a One-Health perspective. Front Microbiol 2023; 13:1032753. [PMID: 36726572 PMCID: PMC9884825 DOI: 10.3389/fmicb.2022.1032753] [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: 08/31/2022] [Accepted: 12/30/2022] [Indexed: 01/19/2023] Open
Abstract
The importance of the One Health concept in attempting to deal with the increasing levels of multidrug-resistant bacteria in both human and animal health is a challenge for the scientific community, policymakers, and the industry. The discovery of the plasmid-borne mobile colistin resistance (mcr) in 2015 poses a significant threat because of the ability of these plasmids to move between different bacterial species through horizontal gene transfer. In light of these findings, the World Health Organization (WHO) recommends that countries implement surveillance strategies to detect the presence of plasmid-mediated colistin-resistant microorganisms and take suitable measures to control and prevent their dissemination. Seven years later, ten different variants of the mcr gene (mcr-1 to mcr-10) have been detected worldwide in bacteria isolated from humans, animals, foods, the environment, and farms. However, the possible transmission mechanisms of the mcr gene among isolates from different geographical origins and sources are largely unknown. This article presents an analysis of whole-genome sequences of Escherichia coli that harbor mcr-1 gene from different origins (human, animal, food, or environment) and geographical location, to identify specific patterns related to virulence genes, plasmid content and antibiotic resistance genes, as well as their phylogeny and their distribution with their origin. In general, E. coli isolates that harbor mcr-1 showed a wide plethora of ARGs. Regarding the plasmid content, the highest concentration of plasmids was found in animal samples. In turn, Asia was the continent that led with the largest diversity and occurrence of these plasmids. Finally, about virulence genes, terC, gad, and traT represent the most frequent virulence genes detected. These findings highlight the relevance of analyzing the environmental settings as an integrative part of the surveillance programs to understand the origins and dissemination of antimicrobial resistance.
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Affiliation(s)
- William Calero-Cáceres
- UTA RAM One Health, Department of Food and Biotechnology Science and Engineering, Universidad Técnica de Ambato, Ambato, Ecuador,Bacteriophage Research Association, Ambato, Ecuador,*Correspondence: William Calero-Cáceres,
| | | | - Anabell Medina
- UTA RAM One Health, Department of Food and Biotechnology Science and Engineering, Universidad Técnica de Ambato, Ambato, Ecuador
| | - Jennifer Medina
- UTA RAM One Health, Department of Food and Biotechnology Science and Engineering, Universidad Técnica de Ambato, Ambato, Ecuador
| | | | - Temmy Sunyoto
- MSFOCB Luxembourg Operational Research (LuxOR) Unit, Luxembourg, Luxembourg
| | - Cícero Armídio Gomes Dias
- Department of Basic Health Sciences, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, Brazil
| | - Carlos Bastidas-Caldes
- One Health Research Group, Biotecnología, Facultad de Ingeniería y Ciencias Aplicadas (FICA), Universidad de las Américas (UDLA), Quito, Ecuador
| | - Maria Soledad Ramírez
- Department of Biological Science, College of Natural Sciences and Mathematics, California State University Fullerton, Fullerton, CA, United States
| | - Anthony David Harries
- International Union Against Tuberculosis and Lung Disease, Paris, France,London School of Hygiene and Tropical Medicine, London, United Kingdom
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Girijan SK, Pillai D. Genetic diversity and prevalence of extended-spectrum beta-lactamase-producing Escherichia coli and Klebsiella pneumoniae in aquatic environments receiving untreated hospital effluents. JOURNAL OF WATER AND HEALTH 2023; 21:66-80. [PMID: 36705498 DOI: 10.2166/wh.2022.194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The spread of extended-spectrum beta-lactamase (ESBL)-producing bacteria in the environment has been recognized as a challenge to public health. The aim of the present study was to assess the occurrence of ESBL-producing Escherichia coli and Klebsiella pneumoniae from selected water bodies receiving hospital effluents in Kerala, India. Nearly 69.8% of Enterobacteriaceae isolates were multi-drug resistant by the Kirby-Bauer disc diffusion method. The double disc synergy test was used to detect the ESBL production and the genes responsible for imparting resistance were detected by PCR. Conjugation experiments confirmed the mechanism of plasmid-mediated transfer of resistance. The prevalence of ESBL production in E. coli and K. pneumoniae was 49.2 and 46.8%, respectively. Among the ESBL-encoding genes, blaCTX-M was the most prevalent group followed by blaTEM, blaOXA, blaCMY, and blaSHV. The results suggest that healthcare settings are one of the key contributors to the spread of ESBL-producing bacteria, not only through cross-transmission and ingestion of antibiotics but also through the discharge of waste without a proper treatment, leading to harmful effects on the aquatic environment. The high prevalence of ESBL-producing Enterobacteriaceae with resistance genes in public water bodies even post-treatment poses a serious threat.
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Affiliation(s)
- Sneha Kalasseril Girijan
- Department of Aquatic Animal Health Management, Kerala University of Fisheries and Ocean Studies, Kochi, Kerala, India E-mail:
| | - Devika Pillai
- Department of Aquatic Animal Health Management, Kerala University of Fisheries and Ocean Studies, Kochi, Kerala, India E-mail:
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Shahkolahi S, Shakibnia P, Shahbazi S, Sabzi S, Badmasti F, Asadi Karam MR, Habibi M. Detection of ESBL and AmpC producing Klebsiella pneumoniae ST11 and ST147 from urinary tract infections in Iran. Acta Microbiol Immunol Hung 2022; 69:303-313. [PMID: 36112491 DOI: 10.1556/030.2022.01808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 08/25/2022] [Indexed: 12/13/2022]
Abstract
In the present study a total of 200 Klebsiella pneumoniae isolates were collected from patients with urinary tract infections (UTIs) in Tehran, Iran. Antibiotic resistance was determined by disk diffusion and broth dilution methods. Detection of extended-spectrum β-lactamases (ESBLs) and AmpCs was performed using phenotypic tests. Polymerase chain reaction (PCR) was applied to detect the ESBL, AmpC, and integron genes. Analysis of AmpC and cassette arrays of integron genes was performed using DNA sequencing. Plasmids were analyzed by PCR-based replicon typing and conjugation. Pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST) were applied to explore the genomic relatedness among the isolates. The highest levels of resistance were observed against ampicillin (100%), followed by piperacillin (57.5%), ceftazidime (46%), trimethoprim/sulfamethoxazole (44%), ciprofloxacin (32.5%), and imipenem (19%). Approximately, 66.5% of isolates harbored at least one of the beta-lactamase genes (blaTEM, blaSHV, blaCTX-M, and blaOXA-1). In addition, 22.5% of isolates carried at least one of the AmpC genes including blaDHA and blaCIT. Integron class I was the most prevalent integron among resistant isolates. According to the results of replicon typing, IncFII, IncL/M, and IncA/C were the most frequent replicons, respectively. All selected isolates were able to transfer blaCTX-M, also two isolates transferred the blaDHA-1 gene to Escherichia coli K12 through conjugation. Finally, 21 isolates were categorized into 4 pulsotypes and 11 unique clusters in PFGE. MLST identified ST147 and ST11 sequence types but ST147 was the most prevalent in the current study.
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Affiliation(s)
| | - Pegah Shakibnia
- 2Department of Microbiology, North Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Shahla Shahbazi
- 1Department of Molecular Biology, Pasteur Institute of Iran, Tehran, Iran
| | - Samira Sabzi
- 1Department of Molecular Biology, Pasteur Institute of Iran, Tehran, Iran
| | - Farzad Badmasti
- 3Department of Bacteriology, Pasteur Institute of Iran, Tehran, Iran
| | | | - Mehri Habibi
- 1Department of Molecular Biology, Pasteur Institute of Iran, Tehran, Iran
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Thoms Rodriguez CA, Dawson F, Cameron J, Seah C, Reid M, Melano RG, Gossell-Williams M. Prevalence and distribution of ampc beta-lactamase producing escherichia coli and klebsiella pneumoniae isolates obtained from urine samples at a tertiary care hospital in the caribbean. Front Cell Infect Microbiol 2022; 12:1015633. [PMID: 36329819 PMCID: PMC9623010 DOI: 10.3389/fcimb.2022.1015633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 09/29/2022] [Indexed: 11/26/2022] Open
Abstract
Introduction The aim of this study was to investigate the prevalence and distribution of AmpC beta-lactamases (BLs) in uropathogens (E. coli and K. pneumoniae) at the University Hospital of the West Indies Jamaica (UHWI). Method De-duplicated consecutive urine samples, collected from January to March 2020 at the UHWI, were analyzed. Screening and phenotypic confirmatory tests were conducted using resistance to cefoxitin and the Disc Approximation Test (DAT) respectively, for isolates of interest. Multiplex PCR was performed on cefoxitin resistant (CR) isolates for the detection of blaCIT, blaMOX, blaFOX, blaACC, and blaDHA genes. Whole genome sequencing (WGS) was used to further detect AmpC BL genes in PCR negative isolates with indeterminate phenotypic results. Results Sixty-four Gram negative isolates were obtained from 61 patients (55% female), aged 18 months to 88 years old. At least 35% (26) had complicated urinary tract infections. Only 7 out of 64 isolates were E. coli or K. pneumoniae, had antibiograms suggestive of possible AmpC BL production and were CR. DATs confirmed AmpC BL in two of these (1 K. pneumoniae; 1 E. coli), one tested negative (E. coli) and four had inconclusive results (K. pneumoniae). PCR detected blaDHA and blaCIT in two CR isolates. WGS further detected blaCMY-42 in one isolate. The prevalence of screened CR isolates with AmpC BL is 57.14% (4 of 7), representing 6.25% of the sample. AmpC BL producers tested had 100% susceptibility to meropenem and nitrofurantoin. Conclusion AmpC BL prevalence among E. coli and K. pneumoniae, common urinary pathogens, in the studied isolates is low. Although cefoxitin screening is helpful, phenotypic screening using the DAT can yield indeterminate results best clarified by molecular testing.
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Affiliation(s)
- Camille-Ann Thoms Rodriguez
- Department of Microbiology, The University of the West Indies, Kingston, Jamaica
- Department of Microbiology, The University Hospital of the West Indies, Kingston, Jamaica
- *Correspondence: Camille-Ann Thoms Rodriguez,
| | - Felecia Dawson
- Department of Basic Medical Sciences, The University of the West Indies, Kingston, Jamaica
| | - Jenene Cameron
- Department of Microbiology, The University Hospital of the West Indies, Kingston, Jamaica
| | - Christine Seah
- Department of Clinical Lab and Microbiology Sciences, Public Health Ontario Laboratory, Toronto, ON, Canada
| | - Marvin Reid
- Caribbean Institute for Health Research, The University of the West Indies, Kingston, Kingston, Jamaica
| | - Roberto G. Melano
- Department of Clinical Lab and Microbiology Sciences, Public Health Ontario Laboratory, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
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Obaidat MM, Gharaibeh WA. Sheep and goat milk in Jordan is a reservoir of multidrug resistant extended spectrum and AmpC beta-lactamases Escherichia coli. Int J Food Microbiol 2022; 377:109834. [PMID: 35841807 DOI: 10.1016/j.ijfoodmicro.2022.109834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 07/05/2022] [Accepted: 07/07/2022] [Indexed: 11/17/2022]
Abstract
Limited data is available on the prevalence and antimicrobial resistance of extended spectrum (ESBL) and AmpC β-lactamases Escherichia coli in sheep and goats in Jordan. This study determined the molecular prevalence and antimicrobial-resistance of ESBL and AmpC β-lactamases E. coli in 155 sheep and goat flocks across Jordan by testing 948 milk samples. The samples were enriched in MacConkey broth, and then plated on MacConkey agar with cefotaxime. The presence of ESBL and AmpC genes in the E. coli isolates was determined by PCR and the resistance toward critically important antimicrobials was tested by disc diffusion. In total, 1016 E. coli isolates were isolated from the cefotaxime supplemented MacConkey, 382 isolates harbored ESBL genes and 54 harbored blaCMY. The prevalence of blaCTX-M, blaTEM, blaCMY and blaSHVE. coli in the milk samples were 33.5 %, 31.7 %, 5.7 %. and 1.1 %, respectively. At the flock level, 30.3 % flocks had β-lactamase E. coli, specifically 25.2 %, 20.7 %, 5.2 % and 2.6 % had blaCTX-M, blaTEM, blaCMY and blaSHV E. coli, respectively. About 52.2 % of the isolates harbored both blaCTX-M and blaTEM. A high percentage (>59 %) of ESBL and AmpC β-lactamases E. coli resisted sulfamethoxazole/trimethoprim, tetracycline and nalidixic acid. Overall, 93.5 % and 96.3 % of ESBL and AmpC E. coli were resistant to ≥1 another antimicrobial class and 44.5 % and 44.4 % were resistant to ≥3 another antimicrobial class, respectively. This study shows that sheep and goat milk is a reservoir of multidrug resistant ESBL and AmpC β-lactamases E. coli, thus good hygienic practices and judicious antimicrobials use are important in small ruminants' farming.
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Affiliation(s)
- Mohammad M Obaidat
- Department of Veterinary Pathology and Public Health, Faculty of Veterinary Medicine, Jordan University of Science and Technology, Ar-Ramtha, Irbid, Jordan.
| | - Wasan A Gharaibeh
- Department of Veterinary Pathology and Public Health, Faculty of Veterinary Medicine, Jordan University of Science and Technology, Ar-Ramtha, Irbid, Jordan
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Feng YC, Liou CH, Ng WV, Chen FJ, Hung CH, Liu PY, Liao YC, Wu HC, Cheng MF. Distribution and Genomic Characterization of Third-Generation Cephalosporin-Resistant Escherichia coli Isolated from A Single Family and Home Environment: A 2-Year Longitudinal Study. Antibiotics (Basel) 2022; 11:antibiotics11091152. [PMID: 36139932 PMCID: PMC9495048 DOI: 10.3390/antibiotics11091152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/15/2022] [Accepted: 08/23/2022] [Indexed: 11/16/2022] Open
Abstract
Third-generation cephalosporin-resistant Escherichia coli (CREC), particularly strains producing extended-spectrum β-lactamases (ESBLs), are a global concern. Our study aims to longitudinally assemble the genomic characteristics of CREC isolates from fecal samples from an index patient with recurrent CREC-related urinary tract infections and his family and swabs from his home environment 12 times between 2019 and 2021 to investigate the distribution of antibiotic resistance genes. CREC identified using the VITEK 2 were subjected to nanopore whole-genome sequencing (WGS). The WGS of 27 CREC isolates discovered in 137 specimens (1 urine, 123 feces, and 13 environmental) revealed the predominance of ST101 and ST131. Among these sequence types, blaCTX-M (44.4%, n = 12) was the predominant ESBL gene family, with blaCTX-M-14 (n = 6) being the most common. The remaining 15 (55.6%) isolates harbored blaCMY-2 genes and were clonally diverse. All E. coli isolated from the index patient’s initial urine and fecal samples belonged to O25b:H4-B2-ST131 and carried blaCTX-M-14. The results of sequence analysis indicate plasmid-mediated household transmission of blaCMY-2 or blaCTX-M-55. A strong genomic similarity was discovered between fecal ESBL-producing E. coli and uropathogenic strains. Furthermore, blaCMY-2 genes were widely distributed among the CREC isolated from family members and their home environment.
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Affiliation(s)
- Yin-Chih Feng
- Department of Pediatrics, Kaohsiung Veterans General Hospital, Kaohsiung 813414, Taiwan
| | - Ci-Hong Liou
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Hsinchu 35053, Taiwan
| | - Wailap Victor Ng
- Department of Biotechnology and Laboratory Science in Medicine, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
| | - Feng-Jui Chen
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Hsinchu 35053, Taiwan
- Department of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan
| | - Chih-Hsin Hung
- Institute of Biotechnology and Chemical Engineering, I-Shou University, Kaohsiung 84001, Taiwan
| | - Po-Yen Liu
- Department of Pediatrics, Kaohsiung Veterans General Hospital, Kaohsiung 813414, Taiwan
| | - Yu-Chieh Liao
- Institute of Population Health Sciences, National Health Research Institutes, Miaoli 35053, Taiwan
| | - Han-Chieh Wu
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Hsinchu 35053, Taiwan
| | - Ming-Fang Cheng
- Department of Pediatrics, Kaohsiung Veterans General Hospital, Kaohsiung 813414, Taiwan
- School of Nursing, Fooyin University, Kaohsiung 83102, Taiwan
- School of Medicine, National Yang Ming Chiao Tung University, Taipei 112304, Taiwan
- Correspondence:
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Emergence of mcr-1 gene and carbapenemase-encoding genes among colistin-resistant Klebsiella pneumoniae clinical isolates in Jordan. J Infect Public Health 2022; 15:922-929. [PMID: 35878515 DOI: 10.1016/j.jiph.2022.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 06/30/2022] [Accepted: 07/14/2022] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Antimicrobial resistance (AMR) is a global threat that requires serious attention, particularly when it is developed against colistin, which is considered one of the 'last-resort' antibiotics for curing an infection. This study aimed to investigate the AMR profile of the Klebsiella (K.) pneumoniae clinical isolates and to obtain the comprehensive characteristics of the carbapenemases among the carbapenem-resistant K. pneumoniae (CR-KP) when isolated. In addition, to detect the colistin resistance and investigate the MCR genes in the clinical K. pneumoniae isolates for the first time in Jordan. METHODS A total of 179 K. pneumoniae isolates were cultured and they were confirmed using the VITEK 2 system and PCR. The antibiotic susceptibilities, extended-spectrum beta-lactamase (ESβL), multidrug-resistant (MDR), and CR-KP were determined by using the VITEK 2 system, disc diffusion, and the minimum inhibitory concentration (MIC) test. PCR was performed to detect the MCR and carbapenemase genes. RESULTS The rates of ESβL, MDR, and CR-KP were 48 %, 62 %, and 12.8 %, respectively. High colistin resistance of 49.7 % (89/179) was found. Only one MCR-1 (1.1 %) out of the 89 colistin resistance isolates was detected. Many of the isolates harbored the ESβL genes. In particular, the carbapenem genes were detected in 26 isolates, with 46 % KPC enzyme genes (12/26), 23 % IMP genes (6/26), 19 % OXA-48 genes (5/26), 11.5 % NDM-1 genes (3/26) but no VIM gene was found. The statistical analyses revealed a significant association between colistin resistance and MDR (P ≤ 0.05, Chi-square test). An association between colistin resistance and the Piperacillin, Ceftazidime, Cefpodoxime, Imipenem, Aztreonam, and Tobramycin resistance was noted. CONCLUSION The study's findings demonstrated the presence of the MCR-1 gene in the K. pneumoniae clinical isolates for the first time in Jordan and indicated that the KPC and IMP encoded carbapenemases were the most prevalent K. pneumoniae carbapenemases in Jordan patients.
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Karami-Zarandi M, Ghale HE, Ranjbar R. Characterization of virulence factors and antibacterial activity of curcumin in hypervirulent Klebsiella pneumoniae. Future Microbiol 2022; 17:529-540. [PMID: 35322691 DOI: 10.2217/fmb-2021-0222] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: Klebsiella pneumoniae is a threat to human health due to its carbapenem-resistance and hypervirulent phenotype. Curcumin is a well-known antimicrobial agent. Hence, it is important to investigate the antivirulence activity of curcumin against hypervirulent K. pneumoniae isolates. Materials & methods: Carbapenemase presence and prevalence of hypervirulent isolates were determined. Inhibition of biofilm formation and expression of virulence genes were analyzed by colorimetry and real-time PCR tests. Results: Sixteen hypervirulent K. pneumoniae isolates were identified. The optimum activity of curcumin was detected at 1/2 minimum inhibitory concentration. Curcumin possessed appropriate antibiofilm, anti-efflux and anticapsule activities. Conclusion: According to the crucial role of biofilm, capsule and efflux systems in the pathogenesis of hypervirulent K. pneumoniae, curcumin may be used to improve anti-Klebsiella treatment.
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Affiliation(s)
- Morteza Karami-Zarandi
- Molecular Biology Research Center, Systems Biology & Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, 14359-16471, Iran
| | - Hadi Eg Ghale
- Applied Virology Research Center, Baqiyatallah University of Medical Sciences, Tehran, 14359-16471, Iran
| | - Reza Ranjbar
- Molecular Biology Research Center, Systems Biology & Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, 14359-16471, Iran
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Rodríguez-Guerrero E, Callejas-Rodelas JC, Navarro-Marí JM, Gutiérrez-Fernández J. Systematic Review of Plasmid AmpC Type Resistances in Escherichia coli and Klebsiella pneumoniae and Preliminary Proposal of a Simplified Screening Method for ampC. Microorganisms 2022; 10:microorganisms10030611. [PMID: 35336186 PMCID: PMC8954824 DOI: 10.3390/microorganisms10030611] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/07/2022] [Accepted: 03/08/2022] [Indexed: 02/01/2023] Open
Abstract
Beta-lactamase (BL) production is a major public health problem. Although not the most frequent AmpC type, AmpC-BL is increasingly isolated, especially plasmid AmpC-BL (pAmpC-BL). The objective of this study was to review information published to date on pAmpC-BL in Escherichia coli and Klebsiella pneumoniae, and on the epidemiology and detection methods used by clinical microbiology laboratories, by performing a systematic review using the MEDLINE PubMed database. The predictive capacity of a screening method to detect AmpC-BL using disks with cloxacillin (CLX) was also evaluated by studying 102 Enterobacteriaceae clinical isolates grown in CHROMID ESBL medium with the addition of cefepime (FEP), cefoxitin (FOX), ertapenem (ETP), CLX, and oxacillin with CLX. The review, which included 149 publications, suggests that certain risk factors (prolonged hospitalization and previous use of cephalosporins) are associated with infections by pAmpC-BL-producing microorganisms. The worldwide prevalence has increased over the past 10 years, with a positivity rate ranging between 0.1 and 40%, although AmpC was only detected when sought in a targeted manner. CMY-2 type has been the most prevalent pAmpC-BL-producing microorganism. The most frequently used phenotypic method has been the double-disk synergy test (using CLX disks or phenyl-boronic acid and cefotaxime [CTX] and ceftazidime) and the disk method combined with these inhibitors. In regard to screening methods, a 1-µg oxacillin disk with CLX showed 88.9% sensitivity, 100% specificity, 100% positive predictive value (PPV), 98.9% negative predictive value (NPV), and 98.9% validity index (VI). This predictive capacity is reduced with the addition of extended-spectrum beta-lactamases, showing 62.5% sensitivity, 100% specificity, 100% PPV, 93.5% NPV, and 94.1% VI. In conclusion, there has been a worldwide increase in the number of isolates with pAmpC-BL, especially in Asia, with CMY-2 being the most frequently detected pAmpC-BL-producing type of microorganism. Reduction in its spread requires routine screening with a combination of phenotypic methods (with AmpC inhibitors) and genotypic methods (multiplex PCR). In conclusion, the proposed screening technique is an easy-to-apply and inexpensive test for the detection of AmpC-producing isolates in the routine screening of multidrug-resistant microorganisms.
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Affiliation(s)
- Enrique Rodríguez-Guerrero
- Laboratory of Microbiology, Virgen de las Nieves University Hospital & ibs.Granada—Instituto de Investigación Biosanitaria de Granada, Avda. de las Fuerzas Armadas 2, 18014 Granada, Spain; (E.R.-G.); (J.M.N.-M.)
| | - Juan Carlos Callejas-Rodelas
- Department of Microbiology, School of Medicine, University of Granada & ibs.Granada—Instituto de Investigación Biosanitaria de Granada, Avenida de la Investigación 11, 18016 Granada, Spain;
| | - José María Navarro-Marí
- Laboratory of Microbiology, Virgen de las Nieves University Hospital & ibs.Granada—Instituto de Investigación Biosanitaria de Granada, Avda. de las Fuerzas Armadas 2, 18014 Granada, Spain; (E.R.-G.); (J.M.N.-M.)
| | - José Gutiérrez-Fernández
- Laboratory of Microbiology, Virgen de las Nieves University Hospital & ibs.Granada—Instituto de Investigación Biosanitaria de Granada, Avda. de las Fuerzas Armadas 2, 18014 Granada, Spain; (E.R.-G.); (J.M.N.-M.)
- Department of Microbiology, School of Medicine, University of Granada & ibs.Granada—Instituto de Investigación Biosanitaria de Granada, Avenida de la Investigación 11, 18016 Granada, Spain;
- Correspondence:
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Phenotypic and molecular characterization of antimicrobial resistance in clinical species of Enterobacter, Serratia, and Hafnia in Northeast Iran. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2021.101352] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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17
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Darphorn TS, Hu Y, Koenders-van Sintanneland BB, Brul S, ter Kuile BH. Multiplication of ampC upon Exposure to a Beta-Lactam Antibiotic Results in a Transferable Transposon in Escherichia coli. Int J Mol Sci 2021; 22:ijms22179230. [PMID: 34502136 PMCID: PMC8430887 DOI: 10.3390/ijms22179230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/23/2021] [Accepted: 08/24/2021] [Indexed: 11/16/2022] Open
Abstract
Plasmids play a crucial role in spreading antimicrobial resistance genes. Plasmids have many ways to incorporate various genes. By inducing amoxicillin resistance in Escherichia coli, followed by horizontal gene transfer experiments and sequencing, we show that the chromosomal beta-lactamase gene ampC is multiplied and results in an 8–13 kb contig. This contig is comparable to a transposon, showing similarities to variable regions found in environmental plasmids, and can be transferred between E. coli cells. As in eight out of nine replicate strains an almost completely identical transposon was isolated, we conclude that this process is under strict control by the cell. The single transposon that differed was shortened at both ends, but otherwise identical. The outcome of this study indicates that as a result of exposure to beta-lactam antibiotics, E. coli can form a transposon containing ampC that can subsequently be integrated into plasmids or genomes. This observation offers an explanation for the large diversity of genes in plasmids found in nature and proposes mechanisms by which the dynamics of plasmids are maintained.
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Affiliation(s)
- Tania S. Darphorn
- Laboratory for Molecular Biology and Microbial Food Safety, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands; (T.S.D.); (Y.H.); (B.B.K.-v.S.); (S.B.)
| | - Yuanqing Hu
- Laboratory for Molecular Biology and Microbial Food Safety, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands; (T.S.D.); (Y.H.); (B.B.K.-v.S.); (S.B.)
- School of Biological Science and Biotechnology, Minnan Normal University, Zhangzhou 363000, China
| | - Belinda B. Koenders-van Sintanneland
- Laboratory for Molecular Biology and Microbial Food Safety, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands; (T.S.D.); (Y.H.); (B.B.K.-v.S.); (S.B.)
| | - Stanley Brul
- Laboratory for Molecular Biology and Microbial Food Safety, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands; (T.S.D.); (Y.H.); (B.B.K.-v.S.); (S.B.)
| | - Benno H. ter Kuile
- Laboratory for Molecular Biology and Microbial Food Safety, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands; (T.S.D.); (Y.H.); (B.B.K.-v.S.); (S.B.)
- The Netherlands Food and Consumer Product Safety Authority, Office for Risk Assessment, Catharijnesingel 59, 3511 GG Utrecht, The Netherlands
- Correspondence: ; Tel.: +31-6-46596684
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Mbyemeire H, Ssekatawa K, Kato CD, Wampande EM. Molecular characterization and distribution of cephalosporin resistance determinants in Escherichia coli and Klebsiella pneumoniae isolated from patients attending Kampala International University Teaching Hospital in Bushenyi, Western Uganda. ALEXANDRIA JOURNAL OF MEDICINE 2021. [DOI: 10.1080/20905068.2021.1952821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Herbert Mbyemeire
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University-Western, Bushenyi, Uganda
- African Center of Excellence in Materials Product Development and Nanotechnology (MAPRONANO ACE, College of Engineering Design Art and Technology Makerere University, Kampala, Uganda, Africa
| | - Kenneth Ssekatawa
- Department of Biochemistry, Faculty of Biomedical Sciences, Kampala International University-Western, Bushenyi, Uganda
- African Center of Excellence in Materials Product Development and Nanotechnology (MAPRONANO ACE, College of Engineering Design Art and Technology Makerere University, Kampala, Uganda, Africa
- College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, Kampala, Uganda
| | - Charles D. Kato
- College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, Kampala, Uganda
- Department of Microbiology and Immunology, Faculty of Biomedical Sciences, Kampala International University-Western Campus, Bushenyi, Uganda
| | - Eddie M. Wampande
- College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, Kampala, Uganda
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Joji RM, Al-Mahameed AE, Jishi TA, Fatani DI, Saeed NK, Jaradat A, Ezzat H, Bindayna KM. Molecular detection of plasmid-derived AmpC β-lactamase among clinical strains of Enterobacteriaceae in Bahrain. Ann Thorac Med 2021; 16:287-293. [PMID: 34484445 PMCID: PMC8388573 DOI: 10.4103/atm.atm_523_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 10/10/2020] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Enterobacteriaceae with AmpC β-lactamase are multidrug-resistant organisms and represent a significant challenge to patient care. This study aims to determine the prevalence of plasmid-derived AmpC β-lactamase among extended spectrum β-lactamases (ESBL)-producing Enterobacteriaceae strains in Bahrain. METHODS It was a cross-sectional study. A total of 185 ESBL-producing Enterobacteriaceae isolates were recovered from clinically significant specimens from January 2018 to December 2019. The samples underwent initial screen for cefoxitin resistance by disc diffusion test and subsequent phenotypic confirmation of AmpC production with phenyl boronic acid assays as well as genotypic analysis by multiplex polymerase chain reactions for AmpC subtypes. Drug-resistant features of these clinical isolates were also examined. RESULTS Twenty-nine ESBL-producing Enterobacteriaceae isolates were cefoxitin resistant. Phenotypic and genotypic analyses confirmed that 8 and 12 cefoxitin-resistant isolates are AmpC positive, respectively. These AmpC producers are multidrug resistant, and Escherichia coli is the dominant strain among them. CONCLUSIONS Plasmid-mediated spread of AmpC is present in clinically relevant Enterobacteriaceae species in Bahrain. Rational antimicrobial therapy against these multidrug-resistant organisms and continued surveillance of antimicrobial resistance mechanisms among the clinical isolates are recommended for optimal patient care.
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Affiliation(s)
- Ronni Mol Joji
- Departments of Microbiology, Immunology and Infectious Diseases, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain
| | - Ali Ebrahim Al-Mahameed
- Departments of Microbiology, Immunology and Infectious Diseases, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain
| | - Thamer Al Jishi
- Departments of Microbiology, Immunology and Infectious Diseases, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain
| | - Dania Ismail Fatani
- Departments of Microbiology, Immunology and Infectious Diseases, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain
| | - Nermin K Saeed
- Department of Pathology, Salmaniya Medical Complex, Ministry of Health, Manama, Kingdom of Bahrain
| | - Ahmed Jaradat
- Department of Community Medicine, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain
| | - Hicham Ezzat
- Departments of Microbiology, Immunology and Infectious Diseases, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain
| | - Khalid Mubarak Bindayna
- Departments of Microbiology, Immunology and Infectious Diseases, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain
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Galindo-Méndez M. Antimicrobial Resistance in Escherichia coli. E. COLI INFECTIONS - IMPORTANCE OF EARLY DIAGNOSIS AND EFFICIENT TREATMENT 2020. [DOI: 10.5772/intechopen.93115] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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21
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Conjugative plasmidic AmpC detected in Escherichia coli, Proteus mirabilis and Klebsiella pneumoniae human clinical isolates from Portugal. Braz J Microbiol 2020; 51:1807-1812. [PMID: 32740783 PMCID: PMC7395798 DOI: 10.1007/s42770-020-00355-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 07/29/2020] [Indexed: 11/27/2022] Open
Abstract
AmpC is a type of β-lactamase enzyme produced by bacteria; these enzymes are classified in Class C and Group 1, and these confer resistance to cephamycin. Enterobacterales producing AmpC are reported worldwide and have great clinical importance due to therapeutic restriction and epidemiological importance once the easy dissemination by plasmidic genes to other bacteria is a real threat. These genes are naturally found in some enterobacteria as Enterobacter cloacae, Morganella morganii, and Citrobacter freundii, but other species have demonstrated similar resistance phenotype of AmpC production. Genes carried in plasmids have been described in these species conferring resistance to cefoxitin and causing therapeutic failure in some bacterial infections. This work detected and described five clinical strains of Escherichia coli, Proteus mirabilis, and Klebsiella pneumoniae that presented plasmid ampC (pAmpC) isolated from the north of Portugal collected in 2009. AmpC production was confirmed by inhibition of the enzyme by cloxacillin and boronic acid in agar diffusion tests. Also, PCR (polymerase chain reaction) was performed for the detection of gene universal to AmpC, blaampC, and others to AmpC group: blaACC, blaCIT, blaCMY, blaDHA, and blaEBC. The conjugation in liquid medium for 24 h was realized to determine if gene is localized in chromosome or plasmid. The isolates and their conjugants showed phenotypic characteristics and blaCMY and blaCIT were detected by PCR corroborating the AmpC characteristics observed in these bacteria. Confirmation of transfer of plasmid containing genes encoding AmpC is of high epidemiological relevance to the hospital studied and demonstrated the importance of AmpC surveillance and studies in hospital and community environments in order to choose the appropriate therapy for bacterial infections.
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