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Giliazeva A, Akosah Y, Noack J, Mardanova A. Adhesion of Klebsiella oxytoca to bladder or lung epithelial cells is promoted by the presence of other opportunistic pathogens. Microb Pathog 2024; 190:106642. [PMID: 38599551 DOI: 10.1016/j.micpath.2024.106642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 04/02/2024] [Accepted: 04/07/2024] [Indexed: 04/12/2024]
Abstract
The intestinal and respiratory tracts of healthy individuals serve as habitats for a diverse array of microorganisms, among which Klebsiella oxytoca holds significance as a causative agent in numerous community- and hospital-acquired infections, often manifesting in polymicrobial contexts. In specific circumstances, K. oxytoca, alongside other constituents of the gut microbiota, undergoes translocation to distinct physiological niches. In these new environments, it engages in close interactions with other microbial community members. As this interaction may progress to co-infection where the virulence of involved pathogens may be promoted and enhance disease severity, we investigated how K. oxytoca affects the adhesion of commonly co-isolated bacteria and vice versa during co-incubation of different biotic and abiotic surfaces. Co-incubation was beneficial for the adhesion of at least one of the two co-cultured strains. K. oxytoca enhanced the adhesion of other enterobacteria strains to polystyrene and adhered more efficiently to bladder or lung epithelial cell lines in the presence of most enterobacteria strains and S. aureus. This effect was accompanied by bacterial coaggregation mediated by carbohydrate-protein interactions occurring between bacteria. These interactions occur only in sessile, but not planktonic populations, and depend on the features of the surface. The data are of particular importance for the risk assessment of the urinary and respiratory tract infections caused by K. oxytoca, including those device-associated. In this paper, we present the first report on K. oxytoca ability to acquire increased adhesive capacities on epithelial cells through interactions with common causal agents of urinary and respiratory tract infections.
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Affiliation(s)
- Adeliia Giliazeva
- Institute of Biotechnology, Faculty of Environment and Natural Sciences, Brandenburg University of Technology Cottbus-Senftenberg, Universitätsplatz 1, Building 15, 01968, Senftenberg, Germany.
| | - Yaw Akosah
- Department of Molecular Pathobiology, College of Dentistry, New York University, 345 E. 24th St., 10010, New York, USA
| | - Jonas Noack
- Medipan GmbH, Computer Science, Ludwig-Erhard-Ring 3, 15827, Dahlewitz, Germany
| | - Ayslu Mardanova
- Department of Microbiology, Institute of Fundamental Medicine and Biology, Kazan (Volga region) Federal University, Kremlyovskaya 18, 420008, Kazan, Russia
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Lau JZ, Kuo SH, Belo Y, Malach E, Maron B, Caraway HE, Oh MW, Zhang Y, Ismail N, Lau GW, Hayouka Z. Antibacterial efficacy of an ultra-short palmitoylated random peptide mixture in mouse models of infection by carbapenem-resistant Klebsiella pneumoniae. Antimicrob Agents Chemother 2023; 67:e0057423. [PMID: 37819119 PMCID: PMC10648864 DOI: 10.1128/aac.00574-23] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 08/18/2023] [Indexed: 10/13/2023] Open
Abstract
Indiscriminate use of antibiotics has imposed a selective pressure for the rapid rise in bacterial resistance, creating an urgent need for novel therapeutics for managing bacterial infectious diseases while counteracting bacterial resistance. Carbapenem-resistant Klebsiella pneumoniae strains have become a major challenge in modern medicine due to their ability to cause an array of severe infections. Recently, we have shown that the 20-mer random peptide mixtures are effective therapeutics against three ESKAPEE pathogens. Here, we evaluated the toxicity, biodistribution, bioavailability, and efficacy of the ultra-short palmitoylated 5-mer phenylalanine:lysine (FK5P) random peptide mixtures against multiple clinical isolates of carbapenem-resistant K. pneumoniae and K. oxytoca. We demonstrate the FK5P rapidly and effectively killed various strains of K. pneumoniae, inhibited the formation of biofilms, and disrupted mature biofilms. FK5P displayed strong toxicity profiles both in vitro and in mice, with prolonged favorable biodistribution and a long half-life. Significantly, FK5P reduced the bacterial burden in mouse models of acute pneumonia and bacteremia and increased the survival rate in a mouse model of bacteremia. Our results demonstrate that FK5P is a safe and promising therapy against Klebsiella species as well as other ESKAPEE pathogens.
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Affiliation(s)
- Jonathan Z. Lau
- Department of Pathobiology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Shanny Hsuan Kuo
- Department of Pathobiology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Yael Belo
- Institute of Biochemistry, Food Science and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Einav Malach
- Institute of Biochemistry, Food Science and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Bar Maron
- Institute of Biochemistry, Food Science and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Hannah E. Caraway
- Department of Pathobiology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Myung Whan Oh
- Department of Pathobiology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Yi Zhang
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Nahed Ismail
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Gee W. Lau
- Department of Pathobiology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Zvi Hayouka
- Institute of Biochemistry, Food Science and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
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Zhao J, Xi Y, Zhang J, Jin Y, Yang H, Duan G, Chen S, Long J. Characterization and diversity of CRISPR/Cas systems in Klebsiella oxytoca. Mol Genet Genomics 2023; 298:1407-1417. [PMID: 37684555 DOI: 10.1007/s00438-023-02065-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 08/21/2023] [Indexed: 09/10/2023]
Abstract
CRISPR (clustered regularly interspaced short palindromic repeats)/Cas (CRISPR-associated protein) system is a crucial adaptive immune system for bacteria to resist foreign DNA infection. In this study, we investigated the prevalence and diversity of CRISPR/Cas systems in 175 Klebsiella oxytoca (K. oxytoca) strains. Specifically, 58.86% (103/175) of these strains possessed at least one confirmed CRISPR locus. Two CRISPR/Cas system types, I-F and IV-A3, were identified in 69 strains. Type I-F system was the most prevalent in this species, which correlated well with MLST. Differently, type IV-A3 system was randomly distributed. Moreover, the type IV-A3 system was separated into two subgroups, with subgroup-specific cas genes and repeat sequences. In addition, spacer origin analysis revealed that approximately one-fifth of type I-F spacers and one-third of type IV-A3 spacers had a significant match to MGEs. The phage tail tape measure protein and conjunctive transfer system protein were important targets of type I-F and IV-A3 systems in K. oxytoca, respectively. PAM sequences were inferred to be 5'-NCC-3' for type I-F, 5'-AAG-3' for subgroup IV-A3-a, and 5'-AAN-3' for subgroup IV-A3-b. Collectively, our findings will shed light on the prevalence, diversity, and functional effects of the CRISPR/Cas system in K. oxytoca.
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Affiliation(s)
- Jiaxue Zhao
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 Kexue Avenue, Zhengzhou, 450001, Henan, China
| | - Yanyan Xi
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 Kexue Avenue, Zhengzhou, 450001, Henan, China
| | | | - Yuefei Jin
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 Kexue Avenue, Zhengzhou, 450001, Henan, China
| | - Haiyan Yang
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 Kexue Avenue, Zhengzhou, 450001, Henan, China
| | - Guangcai Duan
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 Kexue Avenue, Zhengzhou, 450001, Henan, China
- Henan Key Laboratory of Molecular Medicine, Zhengzhou, Henan, China
| | - Shuaiyin Chen
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 Kexue Avenue, Zhengzhou, 450001, Henan, China.
| | - Jinzhao Long
- Department of Epidemiology, College of Public Health, Zhengzhou University, No. 100 Kexue Avenue, Zhengzhou, 450001, Henan, China.
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Zhang J, Fan X. Analysis on the pharyngeal microbiota in patients with laryngopharyngeal reflux disease. Braz J Otorhinolaryngol 2023; 89:101331. [PMID: 37782990 PMCID: PMC10562751 DOI: 10.1016/j.bjorl.2023.101331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 08/21/2023] [Accepted: 09/02/2023] [Indexed: 10/04/2023] Open
Abstract
OBJECTIVE(S) In this study, the laryngopharynx microbiome alterations were characterized after proton pump inhibitor treatment in patients with Laryngopharyngeal Reflux Disease (LPRD) and healthy people. The potential outcome-predictive biomarker was explored. METHODS Patients with LPRD and healthy controls were enrolled. The composition of their laryngopharynx microbiota was analyzed both by traditional plate count of the main bacterial groups and PCR amplification followed by denaturing gradient gel electrophoresis. Shannon-Wiener index and evenness index based on Dice index were used to assess the bacterial diversity. Droplet digital PCR was used to determine the total bacterial RNA and relative abundance of Klebsiella oxytoca. Receiver operating characteristic curve was plotted to explore the potential of Klebsiella oxytoca as an outcome-predictive biomarker. RESULTS A total of 29 LPRD cases and 28 healthy subjects were enrolled. The composition of the laryngopharynx microbiota was almost similar, except Klebsiella oxytoca. The cluster analysis showed that the similarity between healthy and treatment-effective groups, as well as pretreatment and treatment-invalid groups, was close. Statistical analysis showed that there were differences in the diversity index and richness among the healthy, treatment-effective, pretreatment and treatment-invalid groups. The abundance of Klebsiella oxytoca in the treatment-effective LPRD group was lower than that of the treatment-invalid LPRD group. The abundance of Klebsiella oxytoca can distinguish treatment-effective and -invalid groups (AUC=0.859) with a sensitivity of 77.78% and specificity of 90.91%. CONCLUSION There were differences in the diversity of cecal contents microbial community between treatment-invalid and treatment-effective LPRD groups. Klebsiella oxytoca has potential to distinguish treatment outcomes. LEVEL OF EVIDENCE How common is the problem? Level 1. Is this diagnostic or monitoring test accurate? (Diagnosis) Level 4. What will happen if we do not add a therapy? (Prognosis) Level 5. Does this intervention help? (Treatment Benefits) Level 4. What are the COMMON harms? (Treatment Harms) Level 4. What are the RARE harms? (Treatment Harms) Level 4. Is this (early detection) test worthwhile?(Screening) Level 4.
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Affiliation(s)
- Jintang Zhang
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Department of Otolaryngology, Yiwu, China
| | - Xiaofan Fan
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Department of Otolaryngology, Yiwu, China.
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Ikhimiukor OO, Souza SSR, Akintayo IJ, Marcovici MM, Workman A, Martin IW, Andam CP. Phylogenetic lineages and antimicrobial resistance determinants of clinical Klebsiella oxytoca spanning local to global scales. Microbiol Spectr 2023; 11:e0054923. [PMID: 37676032 PMCID: PMC10581156 DOI: 10.1128/spectrum.00549-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 07/19/2023] [Indexed: 09/08/2023] Open
Abstract
Klebsiella oxytoca is an opportunistic pathogen causing serious nosocomial infections. Knowledge about the population structure and diversity of healthcare-associated K. oxytoca from a genomic standpoint remains limited. Here, we characterized the phylogenetic relationships and genomic characteristics of 20 K. oxytoca sensu stricto isolates recovered from bloodstream infections at the Dartmouth-Hitchcock Medical Center, New Hampshire, USA from 2017 to 2021. Results revealed a diverse population consisting of 15 sequence types (STs) that together harbored 10 variants of the intrinsic beta-lactamase gene bla OXY-2, conferring resistance to penicillins. Similar sets of antimicrobial resistance (AMR) determinants reside in multiple distinct lineages, with no one lineage dominating the local population. To place the New Hampshire K. oxytoca in a broader context, we compared them to 304 publicly available genomes of clinical isolates from 18 countries. This global clinical K. oxytoca sensu stricto population is represented by over 65 STs that together harbored resistance genes against 14 antimicrobial classes, including eight bla OXY-2 variants. Three dominant STs in the global population (ST2, ST176, ST199) circulate across multiple countries and were also present in the New Hampshire population. The global K. oxytoca population is genetically diverse, but there is evidence for broad dissemination of a few lineages carrying distinct set of AMR determinants. Our findings reveal the clinical diversity of K. oxytoca sensu stricto and its importance in surveillance efforts aimed at monitoring the evolution of this drug-resistant nosocomial pathogen. IMPORTANCE The opportunistic pathogen Klebsiella oxytoca has been increasingly implicated in patient morbidity and mortality worldwide, including several outbreaks in healthcare settings. The emergence and spread of antimicrobial resistant strains exacerbate the disease burden caused by this species. Our study showed that clinical K. oxytoca sensu stricto is phylogenetically diverse, harboring various antimicrobial resistance determinants and bla OXY-2 variants. Understanding the genomic and population structure of K. oxytoca is important for international initiatives and local epidemiological efforts for surveillance and control of drug-resistant K. oxytoca.
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Affiliation(s)
- Odion O. Ikhimiukor
- Department of Biological Sciences, University at Albany, State University of New York, Albany, New York, USA
| | - Stephanie S. R. Souza
- Department of Biological Sciences, University at Albany, State University of New York, Albany, New York, USA
| | - Ifeoluwa J. Akintayo
- Institute for Infection Prevention and Hospital Epidemiology, Medical Centre, University of Freiburg, Freiburg, Germany
| | - Michael M. Marcovici
- Department of Biological Sciences, University at Albany, State University of New York, Albany, New York, USA
| | - Adrienne Workman
- Department of Pathology and Laboratory Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Isabella W. Martin
- Department of Pathology and Laboratory Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
| | - Cheryl P. Andam
- Department of Biological Sciences, University at Albany, State University of New York, Albany, New York, USA
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Cissé DM, Laure EEM, Blaise KA, Jean Paul NN, Gbonon MV, Mayaka CRA, Eugénie GD, Simplice DN, Philippe KL, Mamadou S. Evaluation of the implementation of hospital hygiene components in 30 health-care facilities in the autonomous district of Abidjan (Cote d'Ivoire) with the WHO Infection Prevention and Control Assessment Framework (IPCAF). BMC Health Serv Res 2023; 23:870. [PMID: 37587467 PMCID: PMC10433570 DOI: 10.1186/s12913-023-09853-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 07/26/2023] [Indexed: 08/18/2023] Open
Abstract
INTRODUCTION As part of the implementation of its mission "to integrate hygiene activities into healthcare", the general directorate of health conducted in 2018 with its technical structures, an evaluation of the implementation of Infection Prevention and Control (IPC) using the WHO IPCAF tool in 30 health-care facilities in the autonomous district of Abidjan. MATERIALS AND METHODS This were a cross-sectional survey with a conceptualized component considering the issue of injection safety and sanitary waste management, which was conducted in the named health-care facilities from March 20 to 28, 2018. The scores of the essential components of the IPC made it possible to assess the IPC level of each health-care facility evaluated and the overall IPCAF score of all facilities. RESULTS The overall median IPCAF score of the health-care facilities was 242.5/800 and corresponded to an inadequate level overall. No facility reached the "advanced" level of performance, 5 facilities (17%) reached the "intermediate" level, 10 (33%) fell into the "basic" level, and 15 (50%) were at the "inadequate" level. Baseline institutions had much higher scores than first contact institutions. CONCLUSION IPC component activities were inadequate and fragmented in the under-resourced health facilities at the time of the assessment. It would be appropriate to provide adequate resources and develop expertise in IPC through strong political will and leadership. This will contribute to the achievement of universal health insurance objectives with safe health services for patients.
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Affiliation(s)
- Doumbia Mariamou Cissé
- Minister of Health, Public Hygiene and Universal Health Coverage of Directorate General of Health, BP V 4 Abidjan, CI-AB. IV93. 14/ CI.AB. 110, Abidjan, Côte d'Ivoire
- Department of Public Health, Felix Houphouët Boigny University, UFR of Pharmaceutical and Biological Sciences, 22 BP 582 Abidjan 22, Abidjan, Côte d'Ivoire
| | - Essis Esme Marie Laure
- National Institute of Public Health, BPV 47 Abidjan, CI-AB. IV93. 14/ CI.AB. 110, Abidjan, Côte d'Ivoire.
- Reproductive Health Research Unit of Cote d'Ivoire, BPV 47 Abidjan, CI-AB. IV93. 14/ CI.AB. 110, Abidjan, Côte d'Ivoire.
| | - Koné Atioumounan Blaise
- Minister of Health, Public Hygiene and Universal Health Coverage of Directorate General of Health, BP V 4 Abidjan, CI-AB. IV93. 14/ CI.AB. 110, Abidjan, Côte d'Ivoire
- National Institute of Public Hygiene, BPV 14 Abidjan 01, CI-AB. IV93. 14/ CI.AB. 110, Abidjan, Côte d'Ivoire
| | - N'gbesso N'gbesso Jean Paul
- Biology and Health Laboratory, University of Félix Houphouët Boigny, 22 B.P. 582, Abidjan 22, CI-AB. IV93. 14/ CI.AB. 110, Abidjan, Côte d'Ivoire
| | - Mbengue Valérie Gbonon
- Pasteur Institute of Cote d'Ivoire, 01 BP 490 Abidjan 01, CI-AB. IV93. 14/ CI.AB. 110, Abidjan, Côte d'Ivoire
- Molecular Genetics Platform of the National Reference Center, CI-AB. IV93. 14/ CI.AB. 110, Abidjan, Côte d'Ivoire
| | - Cissé Raïssa Adja Mayaka
- Department of Public Health, Felix Houphouët Boigny University, UFR of Pharmaceutical and Biological Sciences, 22 BP 582 Abidjan 22, Abidjan, Côte d'Ivoire
| | - Gagne Doh Eugénie
- Directorate of Public Hygiene and Health-Environment, BP V 4 Abidjan, CI-AB. IV93. 14/ CI.AB. 110, Abidjan, Côte d'Ivoire
| | - Dagnan N'cho Simplice
- Department of Public Health and Biostatistics, Félix Houphouët Boigny University, UFR of Medical Sciences, 01 BP V34, Abidjan, Réf.ECI554. Abidjan, CI-AB. IV93. 14/ CI.AB. 110, Abidjan, Côte d'Ivoire
| | - Kouadio Luc Philippe
- Department of Public Health, Felix Houphouët Boigny University, UFR of Pharmaceutical and Biological Sciences, 22 BP 582 Abidjan 22, Abidjan, Côte d'Ivoire
- National Institute of Public Hygiene, BPV 14 Abidjan 01, CI-AB. IV93. 14/ CI.AB. 110, Abidjan, Côte d'Ivoire
| | - Samba Mamadou
- Minister of Health, Public Hygiene and Universal Health Coverage of Directorate General of Health, BP V 4 Abidjan, CI-AB. IV93. 14/ CI.AB. 110, Abidjan, Côte d'Ivoire
- Department of Public Health Department, UFR of Odonto- stomatology, Félix Houphouët Boigny University, 01 BPV 34 Abidjan 01, CI-AB. IV93. 14/ CI.AB. 110, Abidjan, Côte d'Ivoire
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Liébana-Rodríguez M, Recacha-Villamor E, Díaz-Molina C, Pérez-Palacios P, Martín-Hita L, Enríquez-Maroto F, Gutiérrez-Fernández J. Outbreaks by Klebsiella oxytoca in neonatal intensive care units: Analysis of an outbreak in a tertiary hospital and systematic review. Enferm Infecc Microbiol Clin (Engl Ed) 2023:S2529-993X(23)00157-0. [PMID: 37328344 DOI: 10.1016/j.eimce.2023.04.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 04/10/2023] [Indexed: 06/18/2023]
Abstract
OBJECTIVE Klebsiella oxytoca can cause nosocomial infections, affecting vulnerable newborns. There are few studies describing nosocomial outbreaks in the neonatal intensive care units (NICU). In this study, a systematic review of the literature was carried out to know the main characteristics of these outbreaks and the evolution of one is described. METHODS We conducted a systematic review in the Medline database up to July 2022, and present a descriptive study of an outbreak with 21 episodes in the NICU of a tertiary hospital, between September 2021 and January 2022. RESULTS 9 articles met the inclusion criteria. The duration of outbreaks was found to be variable, of which 4 (44.4%) lasted for a year or more. Colonization (69%) was more frequent than infections (31%) and the mortality rate was 22.4%. In studies describing sources, the most frequent was the environmental origin (57.1%). In our outbreak there were 15 colonizations and 6 infections. The infections were mild conjunctivitis without sequelae. Molecular typing analysis made it possible to detect 4 different clusters. CONCLUSIONS There is an important variability in the evolution and results of the published outbreaks, highlighting a greater number of colonized, use of PFGE (pulsed-field gel electrophoresis) techniques for molecular typing and implementation of control measures. Finally, we describe an outbreak in which 21 neonates were affected with mild infections, resolved without sequelae and whose control measures were effective.
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Affiliation(s)
- María Liébana-Rodríguez
- Departamento de Medicina Preventiva y Salud Pública, Hospital Virgen de las Nieves. Instituto de Investigación Biosanitaria de Granada, Ibs-Granada, Granada, Spain
| | - Esther Recacha-Villamor
- Unidad de Enfermedades Infecciosas y Microbiología, Hospital Universitario Virgen Macarena, Instituto de Biomedicina de Sevilla (IBiS), Sevilla, Spain
| | - Carmen Díaz-Molina
- Departamento de Medicina Preventiva y Salud Pública, Hospital Virgen de las Nieves. Instituto de Investigación Biosanitaria de Granada, Ibs-Granada, Granada, Spain
| | - Patricia Pérez-Palacios
- Unidad de Enfermedades Infecciosas y Microbiología, Hospital Universitario Virgen Macarena, Instituto de Biomedicina de Sevilla (IBiS), Sevilla, Spain
| | - Lina Martín-Hita
- Departamento de Microbiología. Hospital Virgen de las Nieves, Instituto de Investigación Biosanitaria de Granada, Ibs-Granada, Granada, Spain
| | - Francisca Enríquez-Maroto
- Departamento de Medicina Preventiva y Salud Pública, Hospital Virgen de las Nieves. Instituto de Investigación Biosanitaria de Granada, Ibs-Granada, Granada, Spain
| | - José Gutiérrez-Fernández
- Departamento de Microbiología. Hospital Virgen de las Nieves, Instituto de Investigación Biosanitaria de Granada, Ibs-Granada, Granada, Spain; Departamento de Microbiología, Universidad de Granada-Instituto de Investigación Biosanitaria de Granada, Ibs-Granada, Granada, Spain.
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Aziz SN, Al-Kadmy IMS, Rheima AM, Al-Sallami KJ, Abd Ellah NH, El-Saber Batiha G, El-Bouseary MM, Algammal AM, Hetta HF. Binary CuO\CoO nanoparticles inhibit biofilm formation and reduce the expression of papC and fimH genes in multidrug-resistant Klebsiella oxytoca. Mol Biol Rep 2023:10.1007/s11033-023-08447-9. [PMID: 37269387 DOI: 10.1007/s11033-023-08447-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 04/11/2023] [Indexed: 06/05/2023]
Abstract
BACKGROUND AND AIM Binary copper-cobalt oxide nanoparticles (CuO\CoO NPs) are modern kinds of antimicrobials, which may get a lot of interest in clinical application. This study aimed to detect the effect of the binary CuO\CoO NPs on the expression of papC and fimH genes in multidrug-resistant (MDR) isolates of Klebsiella oxytoca to reduce medication time and improve outcomes. METHODS Ten isolates of K. oxytoca were collected and identified by different conventional tests besides PCR. Antibiotic sensitivity and biofilm-forming ability were carried out. The harboring of papC and fimH genes was also detected. The effect of binary CuO\CoO nanoparticles on the expression of papC and fimH genes was investigated. RESULTS Bacterial resistance against cefotaxime and gentamicin was the highest (100%), while the lowest percentage of resistance was to amikacin (30%). Nine of the ten bacterial isolates had the ability to form a biofilm with different capacities. MIC for binary CuO\CoO NPs was 2.5 µg/mL. Gene expression of papC and fimH was 8.5- and 9-fold lower using the NPs. CONCLUSION Binary CuO\CoO NPs have a potential therapeutic effect against infections triggered by MDR K. oxytoca strains due to the NPs-related downregulation ability on the virulence genes of K. oxytoca.
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Affiliation(s)
- Sarah Naji Aziz
- Department of Biology, College of Science, Mustansiriyah University, POX 10244, Baghdad, Iraq
| | - Israa M S Al-Kadmy
- Branch of Biotechnology, Department of Biology, College of Science, Mustansiriyah University, POX 10244, Baghdad, Iraq.
| | - Ahmed Mahdi Rheima
- Department of Chemistry, College of Science, Mustansiriyah University, POX 10244, Baghdad, Iraq
| | - Karrar Jasim Al-Sallami
- Department of Chemistry, College of Science, Mustansiriyah University, POX 10244, Baghdad, Iraq
| | - Noura H Abd Ellah
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut, 71515, Egypt
- Department of Pharmaceutics, Faculty of Pharmacy, Badr University in Assiut, Naser City, 2014101, Assiut, Egypt
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicines, Damanhour University, Damanhour, 22511, Egypt
| | | | - Abdelazeem M Algammal
- Department of Bacteriology, Immunology and Mycology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, 41522, Egypt
| | - Helal F Hetta
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut, 71515, Egypt
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Smoglica C, Angelucci S, Di Tana F, Antonucci A, Marsilio F, Di Francesco CE. Antibiotic Resistance in the Apennine Wolf ( Canis lupus italicus): Implications for Wildlife and Human Health. Antibiotics (Basel) 2023; 12:950. [PMID: 37370269 DOI: 10.3390/antibiotics12060950] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 05/19/2023] [Accepted: 05/22/2023] [Indexed: 06/29/2023] Open
Abstract
The Apennine wolf (Canis lupus italicus) is a subspecies of gray wolf that is widespread throughout Italy. Due to hunting and habitat loss, their population declined dramatically in the late 19th and early 20th centuries, but conservation efforts improved to restore the species to an estimated population of 3300 individuals. The presence of antibiotic-resistant bacteria in Apennine Wolf may pose a risk to its health and survival, as well as the health of other animals in its environment. In this study, we investigated the antibiotic resistance profiles of bacteria collected from Apennine wolves admitted to the Wildlife Research Center of Maiella National Park (Italy) in 2022. A total of 12 bacteria collected from four wolves were isolated and tested for susceptibility to antibiotics used in veterinary medicine and to critically important antibiotics for human health by means of the Vitek 2 system. All isolates were resistant to at least one antibiotic, and six bacteria were multidrug resistant to critically important antibiotics (third-generation cephalosporins, carbapenems and fluoroquinolones). The results of this pilot study have allowed for the characterization of resistant profiles in Escherichia coli, Enterococcus faecalis and other bacterial species not previously reported in Apennine wolves. Our findings provide important insights into antibiotic resistance in wildlife and its potential implications for the conservation of biodiversity and public health.
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Affiliation(s)
- Camilla Smoglica
- Post-Graduation School of Animal Health, Breeding and Zootechnical Productions, Department of Veterinary Medicine, University of Teramo, Loc. Piano D'Accio, 64100 Teramo, Italy
| | - Simone Angelucci
- Post-Graduation School of Animal Health, Breeding and Zootechnical Productions, Department of Veterinary Medicine, University of Teramo, Loc. Piano D'Accio, 64100 Teramo, Italy
- Wildlife Research Center, Maiella National Park, Viale del Vivaio, 65023 Caramanico Terme, Italy
| | - Fabrizia Di Tana
- Wildlife Research Center, Maiella National Park, Viale del Vivaio, 65023 Caramanico Terme, Italy
| | - Antonio Antonucci
- Wildlife Research Center, Maiella National Park, Viale del Vivaio, 65023 Caramanico Terme, Italy
| | - Fulvio Marsilio
- Post-Graduation School of Animal Health, Breeding and Zootechnical Productions, Department of Veterinary Medicine, University of Teramo, Loc. Piano D'Accio, 64100 Teramo, Italy
| | - Cristina Esmeralda Di Francesco
- Post-Graduation School of Animal Health, Breeding and Zootechnical Productions, Department of Veterinary Medicine, University of Teramo, Loc. Piano D'Accio, 64100 Teramo, Italy
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10
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Kienesberger S, Cosic A, Kitsera M, Raffl S, Hiesinger M, Leitner E, Halwachs B, Gorkiewicz G, Glabonjat RA, Raber G, Lembacher-Fadum C, Breinbauer R, Schild S, Zechner EL. Enterotoxin tilimycin from gut-resident Klebsiella promotes mutational evolution and antibiotic resistance in mice. Nat Microbiol 2022; 7:1834-48. [PMID: 36289400 DOI: 10.1038/s41564-022-01260-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 09/29/2022] [Indexed: 11/20/2022]
Abstract
Klebsiella spp. that secrete the DNA-alkylating enterotoxin tilimycin colonize the human intestinal tract. Numbers of toxigenic bacteria increase during antibiotic use, and the resulting accumulation of tilimycin in the intestinal lumen damages the epithelium via genetic instability and apoptosis. Here we examine the impact of this genotoxin on the gut ecosystem. 16S rRNA sequencing of faecal samples from mice colonized with Klebsiella oxytoca strains and mechanistic analyses show that tilimycin is a pro-mutagenic antibiotic affecting multiple phyla. Transient synthesis of tilimycin in the murine gut antagonized niche competitors, reduced microbial richness and altered taxonomic composition of the microbiota both during and following exposure. Moreover, tilimycin secretion increased rates of mutagenesis in co-resident opportunistic pathogens such as Klebsiella pneumoniae and Escherichia coli, as shown by de novo acquisition of antibiotic resistance. We conclude that tilimycin is a bacterial mutagen, and flares of genotoxic Klebsiella have the potential to drive the emergence of resistance, destabilize the gut microbiota and shape its evolutionary trajectory. Production of the enterotoxin tilimycin by gut-resident Klebsiella species can alter gut microbiota composition, induce mutational evolution and drive the emergence of antibiotic resistance in mice.
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11
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Bray JE, Correia A, Varga M, Jolley KA, Maiden MCJ, Rodrigues CMC. Ribosomal MLST nucleotide identity (rMLST-NI), a rapid bacterial species identification method: application to Klebsiella and Raoultella genomic species validation. Microb Genom 2022; 8. [PMID: 36098501 PMCID: PMC9676034 DOI: 10.1099/mgen.0.000849] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Bacterial genomics is making an increasing contribution to the fields of medicine and public health microbiology. Consequently, accurate species identification of bacterial genomes is an important task, particularly as the number of genomes stored in online databases increases rapidly and new species are frequently discovered. Existing database entries require regular re-evaluation to ensure that species annotations are consistent with the latest species definitions. We have developed an automated method for bacterial species identification that is an extension of ribosomal multilocus sequence typing (rMLST). The method calculates an ‘rMLST nucleotide identity’ (rMLST-NI) based on the nucleotides present in the protein-encoding ribosomal genes derived from bacterial genomes. rMLST-NI was used to validate the species annotations of 11839 publicly available Klebsiella and Raoultella genomes based on a comparison with a library of type strain genomes. rMLST-NI was compared with two whole-genome average nucleotide identity methods (OrthoANIu and FastANI) and the k-mer based Kleborate software. The results of the four methods agreed across a dataset of 11839 bacterial genomes and identified a small number of entries (n=89) with species annotations that required updating. The rMLST-NI method was 3.5 times faster than Kleborate, 4.5 times faster than FastANI and 1600 times faster than OrthoANIu. rMLST-NI represents a fast and generic method for species identification using type strains as a reference.
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Affiliation(s)
- James E Bray
- Department of Zoology, University of Oxford, Oxford, UK
| | - Annapaula Correia
- Department of Zoology, University of Oxford, Oxford, UK.,Department of Veterinary Medicine, University of Cambridge, Cambridge, UK.,Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, UK
| | | | | | | | - Charlene M C Rodrigues
- Department of Zoology, University of Oxford, Oxford, UK.,Department of Infection Biology, London School of Hygiene and Tropical Medicine, London, UK.,Department of Paediatrics, Imperial College Healthcare NHS Trust, London, UK
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12
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Ghidini S, De Luca S, Rodríguez-López P, Simon AC, Liuzzo G, Poli L, Ianieri A, Zanardi E. Microbial contamination, antimicrobial resistance and biofilm formation of bacteria isolated from a high-throughput pig abattoir. Ital J Food Saf 2022; 11:10160. [PMID: 36120528 PMCID: PMC9472283 DOI: 10.4081/ijfs.2022.10160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 01/26/2022] [Indexed: 11/23/2022] Open
Abstract
The aim of this work was to assess the level of microbial contamination and resistance of bacteria isolated from a highthroughput heavy pig slaughterhouse (approx. 4600 pigs/day) towards antimicrobials considered as critical for human, veterinary or both chemotherapies. Samples, pre-operative and operative, were obtained in 4 different surveys. These comprised environmental sampling, i.e. air (ntotal = 192) and surfaces (ntotal = 32), in four different locations. Moreover, a total of 40 carcasses were sampled in two different moments of slaughtering following Reg. (CE) 2073/2005. Overall, 60 different colonies were randomly selected from VRBGA plates belonging to 20 species, 15 genera and 10 families being Enterobacteriaceae, Moraxellaceae and Pseudomonadaceae the most represented ones. Thirty-seven isolates presented resistance to at least one molecule and seventeen were classified as multi-drug resistant. Enterobacteriaceae, particularly E. coli, displayed high MIC values towards trimethoprim, ampicillin, tetracycline and sulphametoxazole with MICmax of 16, 32, 32 and 512 mg/L, respectively. Moreover, isolated Pseudomonas spp. showed high MIC values in critical antibiotics such as ampicillin and azithromycin with MICmax of 32 and 64 mg/L, respectively. Additionally, in vitro biofilm formation assays demonstrated that fifteen of these isolates can be classified as strong biofilm formers. Results demonstrated that a high diversity of bacteria containing antibiotic resistant and multiresistant species is present in the sampled abattoir. Considering these findings, it could be hypothesised that the processing environment could be a potential diffusion determinant of antibiotic resistant bacteria through the food chain and operators.
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13
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Nakar A, Pistiki A, Ryabchykov O, Bocklitz T, Rösch P, Popp J. Label-free differentiation of clinical E. coli and Klebsiella isolates with Raman spectroscopy. J Biophotonics 2022; 15:e202200005. [PMID: 35388631 DOI: 10.1002/jbio.202200005] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 03/18/2022] [Accepted: 04/04/2022] [Indexed: 05/14/2023]
Abstract
Raman spectroscopy is a promising spectroscopic technique for microbiological diagnostics. In routine diagnostic, the differentiation of pathogens of the Enterobacteriaceae family remain challenging. In this study, Raman spectroscopy was applied for the differentiation of 24 clinical E. coli, Klebsiella pneumoniae and Klebsiella oxytoca isolates. Spectra were collected with two spectroscopic approaches: UV-Resonance Raman spectroscopy (UVRR) and single-cell Raman microspectroscopy with 532 nm excitation. A description of the different biochemical profiles provided by the different excitation wavelengths was performed followed by machine-learning models for the classification at the genus and species levels. UVRR was shown to outperform 532 nm excitation, enabling correct classification at the genus level of 23/24 isolates. Furthermore, for the first time, Klebsiella species were correctly classified at the species level with 92% accuracy, classifying all three K. oxytoca isolates correctly. These findings should guide future applicative studies, increasing the scope of Raman spectroscopy's suitability for clinical applications.
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Affiliation(s)
- Amir Nakar
- Leibniz Institute of Photonic Technology Jena-Member of the Research Alliance "Leibniz Health Technologies", Jena, Germany
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Jena, Germany
- Research Campus Infectognostics, Jena, Germany
| | - Aikaterini Pistiki
- Leibniz Institute of Photonic Technology Jena-Member of the Research Alliance "Leibniz Health Technologies", Jena, Germany
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Jena, Germany
- Research Campus Infectognostics, Jena, Germany
| | - Oleg Ryabchykov
- Leibniz Institute of Photonic Technology Jena-Member of the Research Alliance "Leibniz Health Technologies", Jena, Germany
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Jena, Germany
| | - Thomas Bocklitz
- Leibniz Institute of Photonic Technology Jena-Member of the Research Alliance "Leibniz Health Technologies", Jena, Germany
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Jena, Germany
- Research Campus Infectognostics, Jena, Germany
| | - Petra Rösch
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Jena, Germany
- Research Campus Infectognostics, Jena, Germany
| | - Jürgen Popp
- Leibniz Institute of Photonic Technology Jena-Member of the Research Alliance "Leibniz Health Technologies", Jena, Germany
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Jena, Germany
- Research Campus Infectognostics, Jena, Germany
- Jena Biophotonics and Imaging Laboratory, Jena, Germany
- Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
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14
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Kim SJ, Cho H, Ko KS. Comparative analysis of the Colistin resistance-regulating gene cluster in Klebsiella species. J Microbiol 2022; 60:461-468. [DOI: 10.1007/s12275-022-1640-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/18/2022] [Accepted: 01/20/2022] [Indexed: 10/18/2022]
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15
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Dong N, Yang X, Chan EWC, Zhang R, Chen S. Klebsiella species: Taxonomy, hypervirulence and multidrug resistance. EBioMedicine 2022; 79:103998. [PMID: 35405387 PMCID: PMC9010751 DOI: 10.1016/j.ebiom.2022.103998] [Citation(s) in RCA: 62] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 03/25/2022] [Accepted: 03/28/2022] [Indexed: 11/24/2022] Open
Abstract
Members of the genus Klebsiella have rapidly evolved within the past decade, generating organisms that simultaneously exhibit both multidrug resistance and hypervirulence (MDR-hv) phenotypes; such organisms are associated with severe hospital- and community-acquired infections. Carbapenem-resistant infections with unknown optimal treatment regime were of particular concern among the MDR-hv Klebsiella strains. Recent studies have revealed the molecular features and the mobile resistance elements they harbour, allowing identification of genetic loci responsible for transmission, stable inheritance, and expression of mobile resistance or virulence-encoding elements that confer the new phenotypic characteristics of MDR-hv Klebsiella spp. Here, we provide a comprehensive review on the taxonomic position, species composition and different phylotypes of Klebsiella spp., describing the diversity and worldwide distribution of the MDR-hv clones, the genetic mutation and horizontal gene transfer events that drive the evolution of such clones, and the potential impact of MDR-hv infections on human health.
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Affiliation(s)
- Ning Dong
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Xuemei Yang
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Edward Wai-Chi Chan
- State Key Lab of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong polytechnic University, Hung Hom, Hong Kong, China
| | - Rong Zhang
- Department of Clinical Laboratory, Second Affiliated Hospital of Zhejiang University, School of Medicine, Zhejiang, Hangzhou, China
| | - Sheng Chen
- Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong, China.
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16
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Hua M, Duan A, Li Q, Yue J, Liu X, Yuan L, Liu J, Chen C. Alteration of microbiota and immune response of mice gavaged with Klebsiella oxytoca. Microbes Infect 2022; 24:104977. [DOI: 10.1016/j.micinf.2022.104977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 03/30/2022] [Accepted: 03/30/2022] [Indexed: 12/01/2022]
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17
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Xiang JY, Chi YY, Han JX, Shi X, Cai Y, Xiang H, Xie Q. Intestinal Microbiota Contributes to the Improvement of Alcoholic Hepatitis in Mice Treated With Schisandra chinensis Extract. Front Nutr 2022; 9:822429. [PMID: 35252302 PMCID: PMC8894320 DOI: 10.3389/fnut.2022.822429] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 01/10/2022] [Indexed: 12/12/2022] Open
Abstract
Alcoholic hepatitis (AH) has a high short-term mortality rate. Schisandra chinensis has the potential to ameliorate liver damage and be a source of prebiotics. We aimed to investigate whether Schisandra chinensis extract (SCE) can improve AH and the role of the small intestinal and cecal microbiota and their metabolites. UHPLC-QE-MS was used to analyze the chemical components of SCE. The chronic-plus-binge ethanol feeding model was used to induce AH in mice. 1H NMR was used to analyze intestinal metabolites. 16S rRNA-based high throughput sequencing was used to evaluate the effects of SCE on intestinal microbiota (IM). Intestinal microbiota transplantation was used to explore the role of IM in SCE treatment of AH. SCE ameliorated AH non-dose-dependently. SCE effectively improved liver inflammation and oxidative/nitrosative stress, strengthened intestinal barrier function, and regulated the composition of IM and the content of short-chain fatty acids (SCFAs) in AH mice. Samples from in vivo and in vitro SCE-altered IM improved liver status and regulated the IM. The administration of Lactobacillus plantarum and Bifidobacterium breve ameliorated AH to some extent. The administration of Enterococcus faecalis and Klebsiella oxytoca had partial beneficial effects on AH. Collectively, IM and metabolites were closely associated with the improvement of SCE on AH. The possible microbe targets were the growth inhibition of Escherichia-Shigella and the expansion of SCFA producers, such as Lactobacillus and Bifidobacterium. Schisandra chinensis can be considered as a safe and effective dietary supplement for the prevention and improvement of AH.
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Affiliation(s)
- Jun-Yan Xiang
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun, China
- School of Life Sciences, Jilin University, Changchun, China
| | - Yan-Yu Chi
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun, China
- School of Life Sciences, Jilin University, Changchun, China
| | - Jin-Xin Han
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun, China
- School of Life Sciences, Jilin University, Changchun, China
| | - Xinyu Shi
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun, China
- School of Life Sciences, Jilin University, Changchun, China
| | - Yong Cai
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun, China
- School of Life Sciences, Jilin University, Changchun, China
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
- Resources and Applied Microbiology Laboratory, Institute of Changbai Mountain Resource and Health, Jilin University, Fusong, China
- *Correspondence: Yong Cai
| | - Hongyu Xiang
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun, China
- School of Life Sciences, Jilin University, Changchun, China
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
- Resources and Applied Microbiology Laboratory, Institute of Changbai Mountain Resource and Health, Jilin University, Fusong, China
- Hongyu Xiang
| | - Qiuhong Xie
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun, China
- School of Life Sciences, Jilin University, Changchun, China
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, China
- Resources and Applied Microbiology Laboratory, Institute of Changbai Mountain Resource and Health, Jilin University, Fusong, China
- Qiuhong Xie
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18
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Li P, Zhang Y, Yan F, Zhou X. Characteristics of a Bacteriophage, vB_Kox_ZX8, Isolated From Clinical Klebsiella oxytoca and Its Therapeutic Effect on Mice Bacteremia. Front Microbiol 2021; 12:763136. [PMID: 34925270 PMCID: PMC8678519 DOI: 10.3389/fmicb.2021.763136] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 11/04/2021] [Indexed: 12/13/2022] Open
Abstract
Klebsiella oxytoca is an important nosocomial and community-acquired opportunistic pathogenic Klebsiella and has become the second most prevalent strain in the clinic after K. pneumoniae. However, there have been few reports of bacteriophages used for treating K. oxytoca. In this study, a novel bacteriophage, vB_Kox_ZX8, which specifically infects K. oxytoca AD3, was isolated for the first time from human fecal samples. The biological characteristics of vB_Kox_ZX8 showed an incubation period of 10 min, a burst size of 74 PFU/cell, and a stable pH range of 3-11. Genomic bioinformatics studies of vB_Kox_ZX8 showed that it belongs to the genus Przondovirus, subfamily Studiervirinae, family Autographiviridae. The genome of vB_Kox_ZX8 is 39,398 bp in length and contains 46 putative open reading frames encoding functional proteins, such as DNA degradation, packaging, structural, lysin-holin, and hypothetical proteins. We further investigated the efficacy of vB_Kox_ZX8 phage in the treatment of mice with bacteremia caused by K. oxytoca infection. The results showed that vB_Kox_ZX8 (5 × 109 PFU/mouse) injected intraperitoneally alone was metabolized rapidly in BALB/c mice, and no significant side effects were observed in the control and treatment groups. Importantly, intraperitoneal injection with a single dose of phage vB_Kox_ZX8 (5 × 107 PFU/mouse) for 1 h post-infection saved 100% of BALB/c mice from bacteremia induced by intraperitoneal challenge with a minimum lethal dose of K. oxytoca AD3. However, all negative control mice injected with PBS alone died. Owing to its good safety, narrow host infectivity, high lysis efficiency in vitro, and good in vivo therapeutic effect, phage vB_Kox_ZX8 has the potential to be an excellent antibacterial agent for clinical K. oxytoca-caused infections.
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Affiliation(s)
- Ping Li
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, China
| | - Yangheng Zhang
- Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Fuhua Yan
- Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Xin Zhou
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, China
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19
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Yang J, Long H, Hu Y, Feng Y, McNally A, Zong Z. Klebsiella oxytoca Complex: Update on Taxonomy, Antimicrobial Resistance, and Virulence. Clin Microbiol Rev 2021;:e0000621. [PMID: 34851134 DOI: 10.1128/CMR.00006-21] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Klebsiella oxytoca is actually a complex of nine species-Klebsiella grimontii, Klebsiella huaxiensis, Klebsiella michiganensis, K. oxytoca, Klebsiella pasteurii, Klebsiella spallanzanii, and three unnamed novel species. Phenotypic tests can assign isolates to the complex, but precise species identification requires genome-based analysis. The K. oxytoca complex is a human commensal but also an opportunistic pathogen causing various infections, such as antibiotic-associated hemorrhagic colitis (AAHC), urinary tract infection, and bacteremia, and has caused outbreaks. Production of the cytotoxins tilivalline and tilimycin lead to AAHC, while many virulence factors seen in Klebsiella pneumoniae, such as capsular polysaccharides and fimbriae, have been found in the complex; however, their association with pathogenicity remains unclear. Among the 5,724 K. oxytoca clinical isolates in the SENTRY surveillance system, the rates of nonsusceptibility to carbapenems, ceftriaxone, ciprofloxacin, colistin, and tigecycline were 1.8%, 12.5%, 7.1%, 0.8%, and 0.1%, respectively. Resistance to carbapenems is increasing alarmingly. In addition to the intrinsic blaOXY, many genes encoding β-lactamases with varying spectra of hydrolysis, including extended-spectrum β-lactamases, such as a few CTX-M variants and several TEM and SHV variants, have been found. blaKPC-2 is the most common carbapenemase gene found in the complex and is mainly seen on IncN or IncF plasmids. Due to the ability to acquire antimicrobial resistance and the carriage of multiple virulence genes, the K. oxytoca complex has the potential to become a major threat to human health.
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20
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Kim KM, Song JW, Yang SJ, Choi JW, Sohn J, Han SK, Shin YJ, Lee DY, Lee S, Kim DH. Gut Microbiota-Mediated Immunomodulatory Effects of Lactobacillus rhamnosus HDB1258 Cultured in the Lava Seawater in the Colitis Mouse Model. J Med Food 2021; 24:1169-1171. [PMID: 34704834 DOI: 10.1089/jmf.2021.k.0103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The immunomodulatory effects of Lactobacillus rhamnosus HDB1258 were evaluated in mice with colitis induced by Klebsiella oxytoca (KO). L. rhamnosus HDB1258 was cultured in the lava seawater (LS) to improve its probiotic properties. It increased adhesive ability to mucin with mRNA expression levels of chaperone proteins (such as GroEL/ES, DnaKJ, and HtrA). In the in vivo experiments, administration of KO caused an inflammation on the colon with gut dysbiosis. LH group (oral gavage of HDB1258 1.0 × 109 colony forming units/day) showed that inflammatory biomarkers, including IL-1β, TNF-α, IL-6, and PGE2, were significantly decreased to less than half of the KO group, and Th1 cells were decreased in the spleen, but Treg cells were not affected. In contrast, the expression levels of secretory IgA and IL-10 were significantly increased, and the composition of gut microbiota in the LH group tended to recover similar to normal mice without any effect on the α-diversity. In conclusion, L. rhamnosus HDB1258 cultured in the LS could regulate competitively pathogenic bacteria in imbalanced flora with its improved mucin adhesive ability and was an effective immunomodulatory adjuvant for treating colitis by its regulatory function on intestinal inflammation.
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Affiliation(s)
- Kyung Min Kim
- Bio R&D Center, HYUNDAI BIOLAND Co., Ltd., Ansan, South Korea
| | - Ji-Won Song
- Bio R&D Center, HYUNDAI BIOLAND Co., Ltd., Ansan, South Korea
| | - Seo-Jin Yang
- Bio R&D Center, HYUNDAI BIOLAND Co., Ltd., Ansan, South Korea
| | - Ji-Whi Choi
- Bio R&D Center, HYUNDAI BIOLAND Co., Ltd., Ansan, South Korea
| | - Johann Sohn
- Bio R&D Center, HYUNDAI BIOLAND Co., Ltd., Ansan, South Korea
| | - Sang-Kap Han
- Department of Life and Nanopharmaceutical Sciences, Neurobiota Research Center, College of Pharmacy, Kyung Hee University, Seoul, South Korea
| | - Yoon-Jung Shin
- Department of Life and Nanopharmaceutical Sciences, Neurobiota Research Center, College of Pharmacy, Kyung Hee University, Seoul, South Korea
| | - Dong-Yeon Lee
- Department of Life and Nanopharmaceutical Sciences, Neurobiota Research Center, College of Pharmacy, Kyung Hee University, Seoul, South Korea
| | - Seunghun Lee
- Bio R&D Center, HYUNDAI BIOLAND Co., Ltd., Ansan, South Korea
| | - Dong-Hyun Kim
- Department of Life and Nanopharmaceutical Sciences, Neurobiota Research Center, College of Pharmacy, Kyung Hee University, Seoul, South Korea
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Campos-Madueno EI, Moser AI, Risch M, Bodmer T, Endimiani A. Exploring the Global Spread of Klebsiella grimontii Isolates Possessing blaVIM-1 and mcr-9. Antimicrob Agents Chemother 2021; 65:e0072421. [PMID: 34181480 DOI: 10.1128/AAC.00724-21] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The spread of plasmid-mediated carbapenemases within Klebsiella oxytoca is well-documented. In contrast, data concerning the closely related species Klebsiella grimontii are scarce. In fact, despite the recent report of the first blaKPC-2-producing K. grimontii, nothing is known about its clonality and antibiotic resistance patterns. In a retrospective search in our collection, we identified 2 blaVIM-positive K. oxytoca strains. Whole-genome sequencing with both Illumina and Nanopore indicated that our strains actually belonged to K. grimontii and were of sequence type 172 (ST172) and ST189. Moreover, the two strains were associated with 297-kb IncHI2/HI2A-pST1 and 90.6-kb IncFII(Yp) plasmids carrying blaVIM-1 together with mcr-9 and blaVIM-1, respectively. In the IncHI2/HI2A plasmid, blaVIM-1 was located in a class 1 integron (In110), while mcr-9 was associated with the qseC-qseB-like regulatory elements. Overall, this plasmid was shown to be very similar to those carried by other Enterobacterales isolated from food and animal sources (e.g., Salmonella and Enterobacter spp. detected in Germany and Egypt). The IncFII(Yp) plasmid was unique, and its blaVIM-1 region was associated with a rare integron (In1373). Mapping of In1373 indicated a possible origin in Austria from an Enterobacter hormaechei carrying a highly similar plasmid. Core-genome phylogenies indicated that the ST172 K. grimontii belonged to a clone of identical Swedish and Swiss strains (≤15 single nucleotide variants [SNVs] to each other), whereas the ST189 strain was sporadic. Surveillance of carbapenemase-producing K. oxytoca strains should be reinforced to detect and prevent the dissemination of new species belonging to the Klebsiella genus.
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Jain N, Jansone I, Obidenova T, Simanis R, Meisters J, Straupmane D, Reinis A. Antimicrobial Resistance in Nosocomial Isolates of Gram-Negative Bacteria: Public Health Implications in the Latvian Context. Antibiotics (Basel) 2021; 10:antibiotics10070791. [PMID: 34209766 PMCID: PMC8300747 DOI: 10.3390/antibiotics10070791] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/23/2021] [Accepted: 06/29/2021] [Indexed: 11/24/2022] Open
Abstract
Antimicrobial resistance (AMR) is one of the most serious threats in modern medicine which requires the constant monitoring of emerging trends amongst clinical isolates. However, very limited surveillance data is available in the Latvian context. In the present study, we conducted a retrospective analysis of microbiological data from one of the largest public multispecialty hospitals in Latvia from 2017 to 2020. AMR trends for 19 gram-negative bacterial (GNB) genera were investigated. During the study period, 11,437 isolates were analyzed with Escherichia spp. (34.71%), Klebsiella spp. (19.22%) and Acinetobacter spp. (10.05%) being the most isolated. Carbapenems like Meropenem and Ertapenem were the most effective against GNBs (3% and 5.4% resistance rates, respectively) while high resistance rates (>50%) were noted against both Ampicillin and Amoxicillin/Clavulanic acid. Enterobacter spp. and Klebsiella spp. showed a significant increase in resistance rate against Ertapenem (p = 0.000) and Trimethoprim-Sulfamethoxazole (p = 0.000), respectively. A decrease in the prevalence of Extended-Spectrum Beta-Lactamase positive (ESBL+) Enterobacterales was noted. Despite the lower prescription levels of the penicillin group antimicrobials than the European average (as reported in ESAC-Net Surveillance reports), GNBs showed high average resistant rates, indicating the role of ESBL+ isolates in driving the resistance rates. Constant and careful vigilance along with proper infection control measures are required to track the emerging trends in AMR in GNBs.
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Affiliation(s)
- Nityanand Jain
- Department of Biology and Microbiology, Faculty of Medicine, Riga Stradiņš University, LV-1007 Riga, Latvia;
- Correspondence: ; Tel.: +371-67061584
| | - Inese Jansone
- Joint Laboratory, Pauls Stradiņš Clinical University Hospital, LV-1002 Riga, Latvia; (I.J.); (T.O.); (J.M.); (D.S.)
| | - Tatjana Obidenova
- Joint Laboratory, Pauls Stradiņš Clinical University Hospital, LV-1002 Riga, Latvia; (I.J.); (T.O.); (J.M.); (D.S.)
| | - Raimonds Simanis
- Department of Infectology, Faculty of Medicine, Riga Stradiņš University, LV-1007 Riga, Latvia;
| | - Jānis Meisters
- Joint Laboratory, Pauls Stradiņš Clinical University Hospital, LV-1002 Riga, Latvia; (I.J.); (T.O.); (J.M.); (D.S.)
| | - Dagnija Straupmane
- Joint Laboratory, Pauls Stradiņš Clinical University Hospital, LV-1002 Riga, Latvia; (I.J.); (T.O.); (J.M.); (D.S.)
| | - Aigars Reinis
- Department of Biology and Microbiology, Faculty of Medicine, Riga Stradiņš University, LV-1007 Riga, Latvia;
- Joint Laboratory, Pauls Stradiņš Clinical University Hospital, LV-1002 Riga, Latvia; (I.J.); (T.O.); (J.M.); (D.S.)
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