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Venne DM, Hartley DM, Malchione MD, Koch M, Britto AY, Goodman JL. Review and analysis of the overlapping threats of carbapenem and polymyxin resistant E. coli and Klebsiella in Africa. Antimicrob Resist Infect Control 2023; 12:29. [PMID: 37013626 PMCID: PMC10071777 DOI: 10.1186/s13756-023-01220-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 02/18/2023] [Indexed: 04/05/2023] Open
Abstract
BACKGROUND Carbapenem-resistant Enterobacterales are among the most serious antimicrobial resistance (AMR) threats. Emerging resistance to polymyxins raises the specter of untreatable infections. These resistant organisms have spread globally but, as indicated in WHO reports, the surveillance needed to identify and track them is insufficient, particularly in less resourced countries. This study employs comprehensive search strategies with data extraction, meta-analysis and mapping to help address gaps in the understanding of the risks of carbapenem and polymyxin resistance in the nations of Africa. METHODS Three comprehensive Boolean searches were constructed and utilized to query scientific and medical databases as well as grey literature sources through the end of 2019. Search results were screened to exclude irrelevant results and remaining studies were examined for relevant information regarding carbapenem and/or polymyxin(s) susceptibility and/or resistance amongst E. coli and Klebsiella isolates from humans. Such data and study characteristics were extracted and coded, and the resulting data was analyzed and geographically mapped. RESULTS Our analysis yielded 1341 reports documenting carbapenem resistance in 40 of 54 nations. Resistance among E. coli was estimated as high (> 5%) in 3, moderate (1-5%) in 8 and low (< 1%) in 14 nations with at least 100 representative isolates from 2010 to 2019, while present in 9 others with insufficient isolates to support estimates. Carbapenem resistance was generally higher among Klebsiella: high in 10 nations, moderate in 6, low in 6, and present in 11 with insufficient isolates for estimates. While much less information was available concerning polymyxins, we found 341 reports from 33 of 54 nations, documenting resistance in 23. Resistance among E. coli was high in 2 nations, moderate in 1 and low in 6, while present in 10 with insufficient isolates for estimates. Among Klebsiella, resistance was low in 8 nations and present in 8 with insufficient isolates for estimates. The most widespread associated genotypes were, for carbapenems, blaOXA-48, blaNDM-1 and blaOXA-181 and, for polymyxins, mcr-1, mgrB, and phoPQ/pmrAB. Overlapping carbapenem and polymyxin resistance was documented in 23 nations. CONCLUSIONS While numerous data gaps remain, these data show that significant carbapenem resistance is widespread in Africa and polymyxin resistance is also widely distributed, indicating the need to support robust AMR surveillance, antimicrobial stewardship and infection control in a manner that also addresses broader animal and environmental health dimensions.
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Affiliation(s)
- Danielle M Venne
- Center on Medical Product Access, Safety and Stewardship, Georgetown University, 3900 Reservoir Road, Washington, DC, 20057, USA
| | - David M Hartley
- James M. Anderson Center for Health Systems Excellence, Cincinnati Children's Hospital, 3333 Burnet Avenue, Cincinnati, OH, 45229, USA
- Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, OH, 45229, USA
| | - Marissa D Malchione
- Center on Medical Product Access, Safety and Stewardship, Georgetown University, 3900 Reservoir Road, Washington, DC, 20057, USA
- Sabin Vaccine Institute, Influenza Vaccine Innovation, 2175 K St NW, Washington, DC, 20037, USA
| | - Michala Koch
- Center on Medical Product Access, Safety and Stewardship, Georgetown University, 3900 Reservoir Road, Washington, DC, 20057, USA
| | - Anjali Y Britto
- Center on Medical Product Access, Safety and Stewardship, Georgetown University, 3900 Reservoir Road, Washington, DC, 20057, USA
| | - Jesse L Goodman
- Center on Medical Product Access, Safety and Stewardship, Georgetown University, 3900 Reservoir Road, Washington, DC, 20057, USA.
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Labid A, Benouagueni S, Mehainaoui A, Gacemi Kirane D, Touati A. Antimicrobial Resistance Among Gram-Negative Bacteria Isolated in the Newborn Intensive Care Unit at ABDERREZAK-BOUHARA Hospital of Skikda, Algeria. Microb Drug Resist 2023. [PMID: 36812465 DOI: 10.1089/mdr.2022.0254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
Abstract
Background: This study aimed to determine the epidemiology of gram-negative bacteria (GNB) isolated in the newborn intensive care unit (NICU) population, to assess their antibiotic susceptibility patterns and possible associated risk factors. Methods: All neonates admitted to the NICU of ABDERREZAK-BOUHARA hospital (Skikda, Algeria) with a clinical diagnosis of neonatal infections from March to May 2019 were included in the study. The extended-spectrum β-lactamase (ESBLs), plasmidic cephalosporinase (pAmpC), and carbapenemases genes were screened by polymerase chain reaction (PCR) and sequencing. PCR amplification of oprD among carbapenem-resistant Pseudomonas aeruginosa isolates was also performed. The clonal relatedness of the ESBLs isolates was studied using multilocus sequence typing (MLST). Results: Among 148 clinical specimens, 36 (24.3%) GNB strains were isolated from urine (n = 22), wound (n = 8), stool (n = 3), and blood (n = 3) samples. The bacterial species identified were Escherichia coli (n = 13), Klebsiella pneumoniae (n = 5), Enterobacter cloacae (n = 3), Serratia marcescens (n = 3), Salmonella spp. (n = 3), Proteus mirabilis (n = 1), P. aeruginosa (n = 5), and Acinetobacter baumannii (n = 3). PCR and sequencing showed that eleven Enterobacterales isolates harbored the blaCTX-M-15 gene, two E. coli isolates harbored the blaCMY-2 gene, and three A. baumannii isolates harbored both blaOXA-23 and blaOXA-51 genes. Also, five strains of P. aeruginosa were found to harbor mutations in the oprD gene. MLST showed that the K. pneumoniae strains belonged to ST13 and ST189, E. coli belonged to ST69, and E. cloacae belonged to ST214. Different risk factors that could predict positive GNB cultures were found, including female sex, Apgar score <8 at 5 min of life, enteral nutrition, antibiotic use, and extended length of hospitalization. Conclusion: Our study highlights the importance of determining the epidemiology of pathogens causing neonatal infections, their sequence types (ST), and their antibiotic susceptibility patterns to address rapidly a correct antibiotic treatment regimen.
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Affiliation(s)
- Asma Labid
- Research Laboratory of Interactions, Biodiversity, Ecosystems, and Biotechnology, Department of Nature and Life Sciences, University 20 August 1955, Skikda, Algeria
| | - Sarah Benouagueni
- Department of Biochemistry, Badji Mokhtar University, Annaba, Algeria
| | - Aida Mehainaoui
- Department of Biochemistry, Badji Mokhtar University, Annaba, Algeria
| | | | - Abdelaziz Touati
- Laboratoire d'Ecologie Microbienne, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algeria
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3
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A New Saharan Strain of Streptomyces sp. GSB-11 Produces Maculosin and N-acetyltyramine Active Against Multidrug-Resistant Pathogenic Bacteria. Curr Microbiol 2022; 79:298. [PMID: 36002540 DOI: 10.1007/s00284-022-02994-3] [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: 02/23/2022] [Accepted: 08/04/2022] [Indexed: 11/03/2022]
Abstract
Multi-resistant bacterial pathogens are a major public health problem for treating nosocomial infections owing to their high resistance to antibiotics. The objective of this research was to characterize the bioactive molecules secreted by a novel moderately halophilic actinobacterium strain, designated GSB-11, exhibiting a strong antagonistic activity against several multidrug-resistant pathogenic bacteria. This potential strain was identified by phenotypic, genotypic (16S rRNA), and phylogenetic analyses. GSB-11 was related to "Streptomyces acrimycini" NBRC 12736 T with 99.59% similarity. Molecular screening by PCR assay demonstrated that the strain possesses two biosynthetic genes coding for NRPS and PKS-II. Two active compounds GSB11-6 and GSB11-7 were extracted from the cell-free culture supernatant of Bennett medium and purified using reversed-phase HPLC. According to spectrometric (mass spectrum) and spectroscopic (1H NMR, 13C NMR, 1H-1H COSY, and 1H-13C HMBC) spectra analyses, the compounds GSB11-6 and GSB11-7 were identified to be maculosin and N-acetyltyramine, respectively. Their minimum inhibitory concentrations (MIC) revealed interesting values against certain multidrug-resistant pathogenic bacteria. They were between 5 and 15 mg/mL for GSB11-6, 10 and 30 mg/mL for GSB11-7. To our best knowledge, this is the first study of these active substances isolated from "Streptomyces acrimycini" showing an interesting antibacterial activity. Therefore, these essential compounds could be candidates for future research against multidrug-resistant bacteria.
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Mairi A, Meyer S, Tilloy V, Barraud O, Touati A. Whole Genome Sequencing of Extended-Spectrum Beta-Lactamase-Producing Klebsiella pneumoniae Isolated from Neonatal Bloodstream Infections at a Neonatal Care Unit, Algeria. Microb Drug Resist 2022; 28:867-876. [PMID: 35759367 DOI: 10.1089/mdr.2021.0337] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Aims: Neonatal bloodstream infections (BSIs) are an important cause of mortality among neonates. Besides, extended-spectrum beta-lactamase-producing Klebsiella pneumoniae (ESBL-Kp) is one of the most frequent pathogens causing neonatal BSIs. This study aimed to characterize ESBL-Kp strains recovered from neonatal BSI and to investigate risk factors associated with ESBL-Kp BSI at the neonatal care unit of Elmeki Hospital, Bejaia, Algeria. Methodology: After isolation, identification, and antibiotic susceptibility testing, the ESBL-Kp strains were characterized by whole genome sequencing. The genomes were then analyzed using bioinformatic tools to determine the resistome, virulome, and phylogenetic relatedness. Results: From September 2019 to May 2020, 27 (8.2%) out of 328 neonates were infected by ESBL-Kp strains. These strains displayed a multidrug-resistant phenotype, and on further investigation, were found to carry an array of antibiotic resistance genes. All ESBL-Kp strains harbored the blaCTX-M-15 gene. Using in silico multilocus sequence typing analysis, six sequence types (STs) were detected with ST268 being the most frequent (56%, n = 15) indicating a local outbreak, confirmed by single nucleotide polymorphism analysis. The yersiniabactin and colibactin gene clusters were identified in six and two ESBL-Kp strains, respectively. Conclusion: This study showed a high prevalence of CTX-M-15-producing K. pneumoniae strains coharboring different antibiotic resistance mechanisms from neonatal BSIs in Algeria. Screening of health care personnel and mothers for ESBL carriage before delivery, isolation of carriers, barrier precautions, antimicrobial usage, and control of hygiene are needed to prevent the dissemination of these pathogens.
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Affiliation(s)
- Assia Mairi
- Laboratoire d'Ecologie Microbienne, FSNV, Université de Bejaia, Bejaia, Algérie
| | - Sylvain Meyer
- INSERM, CHU Limoges, UMR 1092, Université de Limoges, Limoges, France
| | - Valentin Tilloy
- CNR Herpesvirus, UF Bioinformatique, CHU Limoges, Limoges, France
| | - Olivier Barraud
- INSERM, CHU Limoges, UMR 1092, Université de Limoges, Limoges, France
| | - Abdelaziz Touati
- Laboratoire d'Ecologie Microbienne, FSNV, Université de Bejaia, Bejaia, Algérie
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Li Q, Li Z, Wang Y, Chen Y, Sun J, Yang Y, Si H. Antimicrobial Resistance and Transconjugants Characteristics of sul3 Positive Escherichia coli Isolated from Animals in Nanning, Guangxi Province. Animals (Basel) 2022; 12:ani12080976. [PMID: 35454223 PMCID: PMC9025041 DOI: 10.3390/ani12080976] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 04/06/2022] [Accepted: 04/07/2022] [Indexed: 01/27/2023] Open
Abstract
Sulfonamides are the second most popular antibiotic in many countries, which leads to the widespread emergence of sulfonamides resistance. sul3 is a more recent version of the gene associated with sulfonamide resistance, whose research is relatively little. In order to comprehend the prevalence of sul3 positive E. coli from animals in Nanning, a total of 146 strains of E. coli were identified from some farms and pet hospitals from 2015 to 2017. The drug resistance and prevalence of sul3 E. coli were analyzed by polymerase chain reaction (PCR) identification, multi-site sequence typing (MLST), drug sensitivity test, and drug resistance gene detection, and then the plasmid containing sul3 was conjugated with the recipient strain (C600). The effect of sul3 plasmid on the recipient was analyzed by stability, drug resistance, and competitive test. In this study, forty-six sul3 positive E. coli strains were separated. A total of 12 ST types were observed, and 1 of those was a previously unknown type. The ST350 is the most numerous type. All isolates were multidrug-resistant E. coli, with high resistant rates to penicillin, ceftriaxone sodium, streptomycin, tetracycline, ciprofloxacin, gatifloxacin, and chloramphenicol (100%, 73.9%, 82.6%, 100%, 80.4%, 71.7%, and 97.8%, respectively). They had at least three antibiotic resistance genes (ARGs) in addition to sul3. The plasmids transferred from three sul3-positive isolates to C600, most of which brought seven antimicrobial resistance (AMR) and increased ARGs to C600. The transferred sul3 gene and the plasmid carrying sul3 could be stably inherited in the recipient bacteria for at least 20 days. These plasmids had no effect on the growth of the recipient bacteria but greatly reduced the competitiveness of the strain at least 60 times in vitro. In Nanning, these sul3-positive E. coli had such strong AMR, and the plasmid carrying sul3 had the ability to transfer multiple resistance genes that long-term monitoring was necessary. Since the transferred plasmid would greatly reduce the competitiveness of the strain in vitro, we could consider limiting the spread of drug-resistant isolates in this respect.
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Genetic Environments of Plasmid-Mediated blaCTXM-15 Beta-Lactamase Gene in Enterobacteriaceae from Africa. MICROBIOLOGY RESEARCH 2021. [DOI: 10.3390/microbiolres12020026] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The most widely distributed blaCTX-M gene on a global scale is blaCTX-M-15. The dissemination has been associated with clonal spread and different types of mobile genetic elements. The objective of this review was to describe the genetic environments of the blaCTX-M-15 gene detected from Enterobacteriaceae in published literature from Africa. A literature search for relevant articles was performed through PubMed, AJOL, and Google Scholar electronic databases; 43 articles from 17 African countries were included in the review based on the eligibility criteria. Insertion sequences were reported as part of the genetic environment of blaCTX-M-15 gene in 32 studies, integrons in 13 studies, and plasmids in 23 studies. In this review, five insertion sequences including ISEcp1, IS26, orf447, IS903, and IS3 have been detected which are associated with the genetic environment of blaCTX-M-15 in Africa. Seven different genetic patterns were seen in the blaCTX-M-15 genetic environment. Insertion sequence ISEcp1 was commonly located upstream of the end of the blaCTX-M-15 gene, while the insertion sequence orf477 was located downstream. In some studies, ISEcp1 was truncated upstream of blaCTX-M-15 by insertion sequences IS26 and IS3. The class 1 integron (Intl1) was most commonly reported to be associated with blaCTX-M-15 (13 studies), with Intl1/dfrA17–aadA5 being the most common gene cassette array. IncFIA-FIB-FII multi-replicons and IncHI2 replicon types were the most common plasmid replicon types that horizontally transferred the blaCTX-M-15 gene. Aminoglycoside-modifying enzymes, and plasmid-mediated quinolone resistance genes were commonly collocated with the blaCTX-M-15 gene on plasmids. This review revealed the predominant role of ISEcp1, Intl1 and IncF plasmids in the mobilization and continental dissemination of the blaCTX-M-15 gene in Africa.
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Sebre S, Abegaz WE, Seman A, Awoke T, Desalegn Z, Mihret W, Mihret A, Abebe T. Bacterial Profiles and Antimicrobial Susceptibility Pattern of Isolates from Inanimate Hospital Environments at Tikur Anbessa Specialized Teaching Hospital, Addis Ababa, Ethiopia. Infect Drug Resist 2020; 13:4439-4448. [PMID: 33364791 PMCID: PMC7751703 DOI: 10.2147/idr.s286293] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 11/30/2020] [Indexed: 12/18/2022] Open
Abstract
Introduction Microbial contamination of the hospital environment plays an important role in the spread of healthcare-associated infections (HCAIs). This study was conducted to determine bacterial contamination, bacterial profiles, and antimicrobial susceptibility pattern of bacterial isolates from environmental surfaces and medical equipment. Methods A cross-sectional study was conducted at Tikur Anbessa Specialized Hospital (TASH) from June to September 2018. A total of 164 inanimate surfaces located at intensive care units (ICUs) and operation theaters (OTs) were swabbed. All isolates were identified by using routine bacterial culture, Gram staining, and a panel of biochemical tests. For each identified bacteria, antibiogram profiles were determined by the Kirby–Bauer disk diffusion method according to the guidelines of the Clinical and Laboratory Standards Institute (CLSI). Results Out of the 164 swabbed samples, 141 (86%) were positive for bacterial growth. The predominant bacteria identified from OTs and ICUs were Staphylococci aureus (23% vs 11.5%), Acinetobacter baumannii (3.8% vs 17.5%) and coagulase-negative Staphylococcus (CoNS) (12.6% vs 2.7%) respectively. Linens were the most contaminated materials among items studied at the hospital (14.8%). Gram-positive bacteria (GPB) had significantly high resistance levels to penicillin (92.8%), cefoxitin (83.5%), and erythromycin (53.6%). On the other hand, Gram-negative bacteria (GNB) revealed the highest resistance levels to ampicillin (97.5%), ceftazidime (91.3%), ceftriaxone (91.3%), and aztreonam (90%). However, a low resistance level was recorded for amikacin (25%) followed by Ciprofloxacin (37.5%). Of the 63 S. aureus isolates, 54 (85.7%) were methicillin-resistant S. aureus (MRSA). Conclusion The inanimate surfaces and commonly touched medical equipment within OTs and ICUs are reservoirs of potentially pathogenic bacteria that could predispose critically ill patients to acquire HCAIs. The proportions of the antimicrobial resistance profile of the isolates are much higher from studied clean inanimate environments.
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Affiliation(s)
- Shemse Sebre
- Department of Microbiology, Immunology, and Parasitology, School of Medicine, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia.,Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Woldaregay Erku Abegaz
- Department of Microbiology, Immunology, and Parasitology, School of Medicine, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Aminu Seman
- Department of Microbiology, Immunology, and Parasitology, School of Medicine, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia.,Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Tewachew Awoke
- Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia
| | - Zelalem Desalegn
- Department of Microbiology, Immunology, and Parasitology, School of Medicine, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Wude Mihret
- Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Adane Mihret
- Department of Microbiology, Immunology, and Parasitology, School of Medicine, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia.,Armauer Hansen Research Institute, Addis Ababa, Ethiopia
| | - Tamrat Abebe
- Department of Microbiology, Immunology, and Parasitology, School of Medicine, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
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Nasser M, Palwe S, Bhargava RN, Feuilloley MGJ, Kharat AS. Retrospective Analysis on Antimicrobial Resistance Trends and Prevalence of β-lactamases in Escherichia coli and ESKAPE Pathogens Isolated from Arabian Patients during 2000-2020. Microorganisms 2020; 8:microorganisms8101626. [PMID: 33096921 PMCID: PMC7589750 DOI: 10.3390/microorganisms8101626] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 10/18/2020] [Accepted: 10/19/2020] [Indexed: 12/11/2022] Open
Abstract
The production of diverse and extended spectrum β-lactamases among Escherichia coli and ESKAPE pathogens is a growing threat to clinicians and public health. We aim to provide a comprehensive analysis of evolving trends of antimicrobial resistance and β-lactamases among E. coli and ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acine to bacter baumannii, Pseudomonas aeruginosa, and Enterobacter species) in the Arabian region. A systematic review was conducted in Medline PubMed on papers published between January 2000 and February 2020 on countries in the Arab region showing different antibiotic resistance among E. coli and ESKAPE pathogens. A total of n = 119,144 clinical isolates were evaluated for antimicrobial resistance in 19 Arab countries. Among these clinical isolates, 74,039 belonged to E. coli and ESKAPE pathogen. Distribution of antibiotic resistance among E. coli and ESKAPE pathogens indicated that E. coli (n = 32,038) was the predominant pathogen followed by K. pneumoniae (n = 17,128), P. aeruginosa (n = 11,074), methicillin-resistant S. aureus (MRSA, n = 4370), A. baumannii (n = 3485) and Enterobacter spp. (n = 1574). There were no reports demonstrating Enterococcus faecium producing β-lactamase. Analyses revealed 19 out of 22 countries reported occurrence of ESBL (Extended-Spectrum β-Lactamase) producing E. coli and ESKAPE pathogens. The present study showed significantly increased resistance rates to various antimicrobial agents over the last 20 years; for instance, cephalosporin resistance increased from 37 to 89.5%, fluoroquinolones from 46.8 to 70.3%, aminoglycosides from 40.2 to 64.4%, mono-bactams from 30.6 to 73.6% and carbapenems from 30.5 to 64.4%. An average of 36.9% of the total isolates were reported to have ESBL phenotype during 2000 to 2020. Molecular analyses showed that among ESBLs and Class A and Class D β-lactamases, blaCTX-M and blaOXA have higher prevalence rates of 57% and 52.7%, respectively. Among Class B β-lactamases, few incidences of blaVIM 27.7% and blaNDM 26.3% were encountered in the Arab region. Conclusion: This review highlights a significant increase in resistance to various classes of antibiotics, including cephalosporins, β-lactam and β-lactamase inhibitor combinations, carbapenems, aminoglycosides and quinolones among E. coli and ESKAPE pathogens in the Arab region.
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Affiliation(s)
- Mahfouz Nasser
- Department of Biotechnology, Dr. Babasaheb Ambedkar Marathwada University, Sub-Campus, Osmanabad 413 528, MS, India;
- National Center for Public Health Laboratories, Hodeidah, Yemen
| | - Snehal Palwe
- Department of Environmental Science, S. B. College of Science, Aurangabad 431001, India;
| | - Ram Naresh Bhargava
- Department of Microbiology, Babasaheb Bhimrao Ambedkar University, Lucknow 226025, India;
| | - Marc G. J. Feuilloley
- Laboratory of Microbiology Signals and Microenvironments, LMSM EA 4312, University of Rouen, Normandy, F-27000 Evreux, France
- Correspondence: (M.G.J.F.); (A.S.K.)
| | - Arun S. Kharat
- Laboratory of Applied Microbiology, School of Life Sciences, Jawaharlal Nehru University, New Mehrauli Road, New Delhi 110067, India
- Correspondence: (M.G.J.F.); (A.S.K.)
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Tata S, Aouiche A, Bijani C, Bouras N, Pont F, Mathieu F, Sabaou N. Mzabimycins A and B, novel intracellular angucycline antibiotics produced by Streptomyces sp. PAL114 in synthetic medium containing L-tryptophan. Saudi Pharm J 2019; 27:907-913. [PMID: 31997896 PMCID: PMC6978613 DOI: 10.1016/j.jsps.2019.06.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Accepted: 06/12/2019] [Indexed: 01/09/2023] Open
Abstract
In our previous studies, the production of four bioactive molecules by Streptomyces sp. PAL114 in complex ISP2 broth medium has been described. Three of these molecules belong to the angucycline family. In this study, two novel antibiotics belonging to the same family were produced by strain PAL114 on M2 synthetic medium containing L-tryptophan as precursor. These antibiotics, named mzabimycins A and B, were intracellular and produced only in the presence of L-tryptophan. After four days of culturing PAL114 in the M2 medium, the bioactive compounds were extracted from mycelium with methanol and then analyzed by HPLC on reverse phase C18 column. Two active purplish blue fractions were purified. The chemical structures of these molecules were determined on the basis of spectroscopic and spectrometric analyses (1H and 13C NMR, and mass spectra). They were identified to be novel angucycline derivative antibiotics. The pure molecules showed activity against some pathogenic Gram-positive bacteria which have multiple antibiotic resistance, such as Staphylococcus aureus MRSA 639c and Listeria monocytogenes ATCC 13932.
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Affiliation(s)
- Samira Tata
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Alger, Algeria
| | - Adel Aouiche
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Alger, Algeria
| | - Christian Bijani
- Laboratoire de Chimie de Coordination (LCC), CNRS, Université de Toulouse, UPS, INPT, LCC, 205 Route de Narbonne, 31077 Toulouse, France
| | - Noureddine Bouras
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Alger, Algeria
- Département de Biologie, Faculté des Sciences de la Nature et de la Vie et Sciences de la Terre, Université de Ghardaïa, BP 455, Ghardaïa 47000, Algeria
| | - Frédéric Pont
- Proteomics Group, Centre de Recherches en Cancérologie de Toulouse (CRCT), INSERM UMR1037, Toulouse, France
| | - Florence Mathieu
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, Toulouse, France
| | - Nasserdine Sabaou
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Alger, Algeria
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Mesbah Zekar F, Granier SA, Touati A, Millemann Y. Occurrence of Third-Generation Cephalosporins-Resistant Klebsiella pneumoniae in Fresh Fruits and Vegetables Purchased at Markets in Algeria. Microb Drug Resist 2019; 26:353-359. [PMID: 31603740 DOI: 10.1089/mdr.2019.0249] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
This study aimed to characterize third-generation cephalosporin (3GC)-resistant Klebsiella pneumoniae isolated from fresh fruits and vegetables purchased at Bejaia city, Algeria. K. pneumoniae isolates were identified by MALDI-TOF. Susceptibility to antibiotics was tested by the disk diffusion method. Whole genome sequencing (WGS) was carried out to determine sequence type (ST), plasmid incompatibility group (Inc.), and acquired antimicrobial resistance gene presence. A total of 13 3GC-resistant K. pneumoniae strains were isolated. WGS identified blaCTX-M-15 in 11 extended-spectrum-beta-lactamases (ESBL)-K. pneumoniae and blaDHA-1 in 2 AmpC-K. pneumoniae. The aac(6')lb-cr gene was identified in 8 out of 13 isolates. Multilocus sequence typing (MLST) evidenced five different STs, namely ST14, ST45, ST219, ST236, and ST882. MDR K. pneumoniae contaminated fresh fruits and vegetables, often eaten raw and inappropriately washed, may represent an underestimated public health threat. This study highlights that hygiene measures during harvesting and retail process are of utmost importance to limit further ESBL/AmpC spread to the consumer households.
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Affiliation(s)
- Ferielle Mesbah Zekar
- Laboratoire d'Ecologie Microbienne, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algeria.,Laboratoire de Sécurité des Aliments, Agence Nationale de Sécurité Sanitaire de l'Alimentation, de l'Environnement et du Travail (ANSES), Université PARIS-EST, Maisons-Alfort, France
| | - Sophie A Granier
- Laboratoire de Sécurité des Aliments, Agence Nationale de Sécurité Sanitaire de l'Alimentation, de l'Environnement et du Travail (ANSES), Université PARIS-EST, Maisons-Alfort, France.,Laboratoire de Fougères, Agence Nationale de Sécurité Sanitaire de l'Alimentation, de l'Environnement et du Travail (ANSES), Fougères, France
| | - Abdelaziz Touati
- Laboratoire d'Ecologie Microbienne, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algeria
| | - Yves Millemann
- Laboratoire de Sécurité des Aliments, Agence Nationale de Sécurité Sanitaire de l'Alimentation, de l'Environnement et du Travail (ANSES), Université PARIS-EST, Maisons-Alfort, France.,Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, Maisons-Alfort, France
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11
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Sahoo RK, Das A, Gaur M, Pattanayak A, Sahoo S, Debata NK, Rahman PK, Subudhi E. Genotypic validation of extended-spectrum β-lactamase and virulence factors in multidrug resistance Klebsiella pneumoniae in an Indian hospital. Pathog Glob Health 2019; 113:315-321. [PMID: 31865867 PMCID: PMC7006650 DOI: 10.1080/20477724.2019.1705020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
The emergence of extended-spectrum β-lactamase (ESBL)-producing Klebsiella pneumoniae has been increasing rapidly across the world. The presence of virulence factors in ESBL producers further adds to the pathogenicity and severity of infection, which often complicate empirical therapy and sometimes result in treatment failures. In the present study, 227 non-repeated clinical isolates of K. pneumoniae obtained from different clinical specimens from a tertiary care hospital in India were analyzed to detect the genes responsible for ESBL production (blaTEM, blaCTX-M, and blaSHV), virulence (fimH-1, mrkD, entB, irp-1), and capsule production (K1-K2). Phenotypically identified 72 ESBL producing K. pneumoniae isolates were further subjected to PCR based genotypic analysis but only 20 were found to have at least one of the ESBL producing genes. blaTEM was the most predominant gene (100%), followed by blaSHV (90%), and blaCTX-M (85%). Similarly, the most common virulence genes were fimH-1 (70%), entB (65%), markD (55%), irp-1 (25%), K1 (25%), and K2 (20%). REP-PCR profile separated them into five major clusters (I-V), indicating the existing heterogeneity among the isolates. The resistance profile data obtained from the present study can serve as the information base to understand the infection pattern prevailing in the hospital and for physicians to recommend suitable antibiotics for the patients.
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Affiliation(s)
- Rajesh Kumar Sahoo
- Centre for Biotechnology, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, India
| | - Aradhana Das
- Centre for Biotechnology, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, India
| | - Mahendra Gaur
- Centre for Biotechnology, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, India
| | - Ankita Pattanayak
- Centre for Biotechnology, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, India
| | - Saubhagini Sahoo
- Centre for Biotechnology, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, India
| | - Nagen Kumar Debata
- Department of Microbiology, Institute of Medical Science and SUM Hospital, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, India
| | - Pattanathu K.S.M. Rahman
- Centre for Enzyme Innovation, Institute of Biomedical and Biomolecular Sciences, School of Biological Sciences, University of Portsmouth, Portsmouth, UK
| | - Enketeswara Subudhi
- Centre for Biotechnology, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar, India
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Prevalence of Extended-Spectrum β-Lactamases Among Klebsiella pneumoniae Isolated from Intensive Care Unit Patients in a Tertiary Hospital. ARCHIVES OF CLINICAL INFECTIOUS DISEASES 2019. [DOI: 10.5812/archcid.69199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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An insight into the emergence of Acinetobacter baumannii as an oro-dental pathogen and its drug resistance gene profile - An in silico approach. Heliyon 2018; 4:e01051. [PMID: 30603692 PMCID: PMC6304470 DOI: 10.1016/j.heliyon.2018.e01051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 11/10/2018] [Accepted: 12/12/2018] [Indexed: 11/23/2022] Open
Abstract
Background Acinetobacter baumannii, a potential nosocomial pathogen has stealthily gained entry into the oral cavity. Their association with other pathogens like Pseudomonas aeruginosa in chronic and aggressive periodontitis cases is well documented. The magnitude of problem caused by A . baumannii could be attributed to resistance genes acquired by the organism. Since the microbiome of oral cavity is heterogeneous and complex, the transfer of genes from multidrug resistant A . baumannii may be a serious threat in infection control and management. In view of this fact, the present study aims to categorize and characterize drug resistant genes present in each of the 19 genomes of Acinetobacter Sp. selected for the study. Methods About 19 genome sequences of Acinetobacter spp. with the predominance of different strains of A . baumannii was genotyped using in silico restriction digestion and pulse field gel electrophoresis (PFGE). Further, the prevalence of common drug resistant genes in the genome of various Acinetobacter spp. was recorded using in silico PCR analysis. Results Based on the PFGE pattern, phylogenetic tree was constructed and the genomes were clustered into 6 genotypes. Genotype 4 (n = 8; 42.10%) and 5 (n = 6; 31.57%) were predominant, followed by genotypes 2 (n = 2; 10.52%), 1, 3 and 6 (n = 1; 5.26%). Three species were excluded from the list since they were negative for most of the drug resistant genes tested. Prevalence of drug resistant genes in each of the 16 genomes analysed found oxa-51, ISAba 1 and ADC 1 to be the major genes found in A . baumannii. Acinetobacter spp. belonging to genotypes 4 and 5 were found to harbour 6-10 and 2-8 potential drug resistant genes respectively. Conclusion The present study showed cluster of multi-drug resistant genes in genomes analysed, thus, warranting the need for antibiotic surveillance, alternate therapeutic measures and development of novel antimicrobials. An extensive study on the genes conferring drug resistance in this pathogen will open new avenues for battling the entry and spread of this pathogen in vulnerable patient groups.
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14
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Mitgang EA, Hartley DM, Malchione MD, Koch M, Goodman JL. Review and mapping of carbapenem-resistant Enterobacteriaceae in Africa: Using diverse data to inform surveillance gaps. Int J Antimicrob Agents 2018; 52:372-384. [DOI: 10.1016/j.ijantimicag.2018.05.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 05/25/2018] [Accepted: 05/26/2018] [Indexed: 01/05/2023]
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15
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Kiaei S, Moradi M, Hosseini Nave H, Hashemizadeh Z, Taati-Moghadam M, Kalantar-Neyestanaki D. Emergence of co-existence of bla NDM with rmtC and qnrB genes in clinical carbapenem-resistant Klebsiella pneumoniae isolates in burning center from southeast of Iran. Folia Microbiol (Praha) 2018; 64:55-62. [PMID: 30003527 DOI: 10.1007/s12223-018-0630-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Accepted: 07/02/2018] [Indexed: 10/28/2022]
Abstract
Dissemination of carbapenemase-producing Klebsiella pneumoniae along with 16S rRNA methyltransferase (16S-RMTase) has been caused as a great concern for healthcare settings. The aim of this study was to investigate the prevalence of resistance genes among K. pneumoniae isolates. During October 2015 to February 2016, 30 non-duplicative K. pneumoniae strains were isolated from clinical specimens in a burn center in Kerman, Iran. Antibiotic susceptibility tests of isolates, carbapenemase, extended-spectrum beta-lactamases (ESBLs) and AmpC beta-lactamase-producing isolates were determined by phenotypic methods. The beta-lactamase, oqxA/B efflux pumps, qnr A, B, S, 16S-RMTase (rmt A, B, and C), and mcr-1 resistance genes were determined by PCR. Enterobacterial repetitive intergenic consensus (ERIC)-PCR was used for molecular typing. According to our findings, tigecycline has been shown the most active agent against K. pneumoniae isolates. Antibiotic resistance genes, blaTEM-1, blaSHV-12, blaCTX-M-15, blaCTX-M-2, blaNDM-1, blaFOX, blaMOX, blaEBC, blaACC, blaCIT, rmtC, qnrB, qnrS, oqxA, and oqxB, were detected in 11 (36.7%), 13 (43.3%), 11 (36.6%), 5 (16.6%), 9 (30%), 1 (3.3%), 1 (3.3%), 1 (3.3%), 1 (3.3%), 2 (6.7%), 1 (3.3%), 9 (30%), 2 (6.7%), 18 (60%), and 13 (43.3%) of isolates, respectively. The blaNDM-1 with rmtC was simultaneously observed in one isolate. ERIC-PCR results revealed 25 distinct patterns in eight clusters (A-H) and five singletons. This study highlights the high prevalence of blaNDM and emergence of rmtC among carbapenem-resistant K. pneumoniae. The resistance genes are often co-located on the conjugative plasmids, so it might be the reason of the rapid spread of them. The prevalence of multidrug-resistant K. pneumoniae isolates limits the available treatment options and presents tremendous challenges to public health.
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Affiliation(s)
- Somayeh Kiaei
- Department of Microbiology and Virology, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran.,Student Research Committee, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohammad Moradi
- Department of Microbiology and Virology, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Hossein Hosseini Nave
- Department of Microbiology and Virology, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Zahra Hashemizadeh
- Student Research Committee, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Majid Taati-Moghadam
- Student Research Committee, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Davood Kalantar-Neyestanaki
- Department of Microbiology and Virology, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran.
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16
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Ghalavand Z, Heidary Rouchi A, Bahraminasab H, Ravanasa E, Mirsamadi ES, Nodeh Farahani N, Nikmanesh B. Molecular testing of Klebsiella pneumoniae contaminating tissue allografts recovered from deceased donors. Cell Tissue Bank 2018; 19:391-398. [PMID: 29397462 DOI: 10.1007/s10561-018-9684-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Accepted: 01/15/2018] [Indexed: 11/27/2022]
Abstract
Microbiological screening of tissue allografts is crucial to prevent the transmission of bacterial and fungal infections to transplant recipients. Klebsiella was the most prevalent and resistant contaminating microorganism observed in our setting in the Iranian Tissue Bank. This study was conducted to determine the presence of extended-spectrum β-lactamase (ESBL) genes, antimicrobial resistance patterns of Klebsiella pneumoniae isolates, and their clonal relationships in allograft materials. K. pneumoniae contaminating bone and other tissue allografts recovered from deceased donors were identified and ESBL isolates were detected using a phenotypic confirmatory method. Antimicrobial susceptibility testing was carried out using the disk diffusion method. Distribution of ESBL genes and molecular typing were performed using polymerase chain reaction (PCR) and Repetitive-element (rep-PCR) methods. Of 3828 donated tissues, 51 (1.3%) were found contaminated by K. pneumoniae isolates. Compared to tissue allografts from brain-dead, heart-beating tissue donors, allografts from donors with circulatory cessation were associated with a higher risk of K. pneumoniae contamination [odds ratio (OR), 1.2 (CI 95% 0.9-2.3) (P value < 0.001)]. Half of the isolates produced ESBL, and the rate of susceptibility to cephalosporins was 51%. Among isolates, 22 (43.1%) harbored CTX-M, 31 (60.8%) SHV, and 9 (17.6%) harbored TEM types. The rep-dendrogram indicated that clones having identical or related strains with a similar antibiotype were isolated in the same period. This study provides evidence that a single clone of K. pneumoniae contaminated tissue allografts recovered from many different donors. A single clone found on tissues from several donors suggests contamination of tissues from a single source such as the tissue recovery process and environment. Genomic DNA testing and clonality of contaminating bacteria using molecular methods can focus the epidemiologic investigation on the tissue allograft recovery process including a search for contamination of the tissue recovery room environment, recovery staff, recovery equipment, reagents, solutions and supplies.
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Affiliation(s)
- Zohreh Ghalavand
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Alireza Heidary Rouchi
- Iranian Tissue Bank and Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Hassan Bahraminasab
- Iranian Tissue Bank and Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Elham Ravanasa
- Iranian Tissue Bank and Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Elnaz Sadat Mirsamadi
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Narges Nodeh Farahani
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Bahram Nikmanesh
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Tehran University of Medical Sciences, No. 17, Ghods Ave, Enghelab St., Tehran, 1419733151, Iran.
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17
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Aljanaby AAJ, Alhasnawi HMRJ. Phenotypic and Molecular Characterization of Multidrug Resistant Klebsiella pneumoniae Isolated from Different Clinical Sources in Al-Najaf Province-Iraq. Pak J Biol Sci 2017; 20:217-232. [PMID: 29023034 DOI: 10.3923/pjbs.2017.217.232] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND AND OBJECTIVE Burns infections and urinary tract infections are the most important prevalent diseases in Asian countries, such as Iraq. Klebsiella pneumoniae is one of the most important bacteria cause this type of infections especially in hospitals. Therefore, the aim of this study was to investigate the prevalence of multi-drug resistance K. pneumoniae and extended-spectrum beta-lactamases producing K. pneumoniae isolates from inpatients with urinary tract infection and burns infections in Al-Kufa hospital in Al-Najaf province, Iraq. MATERIALS AND METHODS A total of 285 clinical samples were collected from in-patients infected with urinary tract infection (141 urine samples) and burns infections (144 burns swabs). Fourteen different antibiotics were used by disc diffusion method and 13 antimicrobials resistance genes were used by PCR technique. RESULTS A total of 43 K. pneumoniae strains were isolated. The highest resistance rate was observed for amoxicillin 25 μg and amoxicillin+clavulanic acid 20+10 μg (97.67%) while the lowest resistance rate was observed for imipenem 10 μg (9.30%). The most common resistance associated-genes were blaSHV (86.04%) and at lower prevalence were IMP (9.30%). CONCLUSION Klebsiella pneumoniae strains isolated from burns infections were more virulent than those isolated from urinary tract infections.
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18
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Rebbah N, Messai Y, Châtre P, Haenni M, Madec JY, Bakour R. Diversity of CTX-M Extended-Spectrum β-Lactamases in Escherichia coli Isolates from Retail Raw Ground Beef: First Report of CTX-M-24 and CTX-M-32 in Algeria. Microb Drug Resist 2017; 24:896-908. [PMID: 29227186 DOI: 10.1089/mdr.2017.0171] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The aim of this study was to investigate the prevalence and molecular features of extended-spectrum cephalosporin resistance in Escherichia coli isolates contaminating ground beef at retail in Algeria. Of 371 ground beef samples, 27.5% were found to contain cefotaxime-resistant E. coli isolates distributed into A (24.5%), B1 (60.8%), and D (14.7%) phylogroups. A rate of 88.2% of isolates had a multidrug-resistance phenotype. All strains were producers of CTX-M type extended-spectrum β-lactamases (ESBLs): CTX-M-1, CTX-M-3, CTX-M-14, CTX-M-15, CTX-M-24, or CTX-M-32. Conjugation assays allowed the transfer of blaCTX-M-1 in association with IncI1 plasmids, blaCTX-M-15 with IncI1 and IncK+B/O plasmids, blaCTX-M-3 with IncK plasmids, and blaCTX-M-14 with IncF1B or IncK plasmids. Sequence analysis of gyrA and parC genes showed mutations in 98.6% of ciprofloxacin-resistant isolates. The patterns "GyrA: S83L+D87N, ParC: S80I" (46.5%) and "ParC: S80I" (42.3%) were predominant. qnrS1, qnrB, and aac(6')-Ib-cr were detected in 18.7% of isolates. The tet genes, tetA, tetB, and tetA+tetB, were present in 95.7% of tetracycline-resistant isolates. The sul genes (sul1, sul2, sul3, sul1+sul2, sul2+sul3, and sul1+sul3) and the dfr gene clusters (dfrA1, dfrA5, dfrA7, dfrA8, dfrA12, dfrA5+dfrA12, dfrA1+dfrA5, dfrA7+dfrA12, dfrA5+dfrA7, and dfrA1+dfrA5+dfrA7) were found in 96.4% and 85.5% of sulfamethoxazole/trimethoprim-resistant isolates, respectively. Classes 1 and 2 integrons were detected in 67.6% and 9.8% of isolates, respectively. This study highlighted the significant presence of resistance genes, in particular those of CTXM ESBLs, in the beef meat, with the risk of their transmission to humans through food chain.
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Affiliation(s)
- Nesrine Rebbah
- 1 Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene , Algiers, Algeria
| | - Yamina Messai
- 1 Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene , Algiers, Algeria
| | - Pierre Châtre
- 2 Unité Antibiorésistance et Virulence Bactériennes, Université Lyon-ANSES Site de Lyon , Lyon, France
| | - Marisa Haenni
- 2 Unité Antibiorésistance et Virulence Bactériennes, Université Lyon-ANSES Site de Lyon , Lyon, France
| | - Jean Yves Madec
- 2 Unité Antibiorésistance et Virulence Bactériennes, Université Lyon-ANSES Site de Lyon , Lyon, France
| | - Rabah Bakour
- 1 Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene , Algiers, Algeria
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Sbiti M, Lahmadi K, Louzi L. [Epidemiological profile of uropathogenic enterobacteria producing extended spectrum beta-lactamases]. Pan Afr Med J 2017; 28:29. [PMID: 29138665 PMCID: PMC5681015 DOI: 10.11604/pamj.2017.28.29.11402] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 07/28/2017] [Indexed: 12/02/2022] Open
Abstract
Les infections urinaires à entérobactéries productrices de bêtalactamases à spectre élargi (E-BLSE) constituent un risque infectieux, un enjeu thérapeutique de taille et peuvent même conduire dans certains cas à des impasses du fait de leur multi-résistance aux antibiotiques. Le but de ce travail est de préciser le profil épidémiologique des (E-BLSE) uropathogènes et décrire leur niveau actuel de résistance aux antibiotiques pour une meilleure prise en charge des patients selon les données locales. Il s'agit d'une étude rétrospective sur une période de trois ans (du 1er janvier 2013 au 31 décembre 2015) concernant toutes les souches d'E-BLSE isolées de tous les ECBU traités au laboratoire de microbiologie de à l'Hôpital Militaire Moulay Ismail de Meknès. La culture a été faite selon les techniques usuelles, et l'antibiogramme a été réalisé par méthode de disque diffusion sous gélose Muller-Hinton selon les recommandations du Comité de l'antibiogramme de la Société française de microbiologie CA-SFM 2013/2014. Cette étude a permis de noter une importante prévalence globale d'isolement des E-BLSE (12.2%), particulièrement chez les patients hospitalisés (54.8%) dont la plus grande prévalence (72%) a été enregistrée dans le service d'urologie. Parmi ces E-BLSE Escherichia coli constitue la majorité (61%) des isolats, cependant au sein de la même espèce Klebsiella pneumoniae est le plus producteur de BLSE (25.8%). L'étude de l'antibioresistance des E-BLSE durant ces trois ans a mis en évidence des co-résistances à la ciprofloxacine (92.5%), au sulfametoxazole-trimethoprime (88,4%), à la gentamycine (67,2%). Globalement nos résultats sont en accord avec les données des autres pays méditerranéens exception faite pour l'amikacine dont la résistance est très basse (6.1%) dans notre étude. Cette étude a montré que la prévalence des E-BLSE en milieu hospitalier est importante et que sa diffusion en milieu communautaire est un fait préoccupant. Ces E-BLSE sont généralement résistantes aux antibiotiques, notamment des aux molécules utiles en urologie.
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Affiliation(s)
- Mohammed Sbiti
- Service de Microbiologie, Hôpital Militaire Moulay Ismail de Meknès, Maroc.,Faculté de Médecine et de Pharmacie, Université Mohammed Ben Abdellah, Fès, Maroc
| | - Khalid Lahmadi
- Service de Microbiologie, Hôpital Militaire Moulay Ismail de Meknès, Maroc.,Faculté de Médecine et de Pharmacie, Université Mohammed Ben Abdellah, Fès, Maroc
| | - Lhoussaine Louzi
- Pôle de Biologie Médicale, Hôpital Militaire Moulay Ismail Meknès, Maroc.,Faculté de Médecine et de Pharmacie, Université Mohammed V, Souissi-Rabat, Maroc
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20
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Sedighi M, Halajzadeh M, Ramazanzadeh R, Amirmozafari N, Heidary M, Pirouzi S. Molecular detection of β-lactamase and integron genes in clinical strains of Klebsiella pneumoniae by multiplex polymerase chain reaction. Rev Soc Bras Med Trop 2017; 50:321-328. [PMID: 28700049 DOI: 10.1590/0037-8682-0001-2017] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Accepted: 04/24/2017] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION: Infections caused by β-lactamase-producing gram-negative bacteria, such as Klebsiella pneumoniae, are increasing globally with high morbidity and mortality. The aim of the current study was to determine antimicrobial susceptibility patterns and the prevalence of antibiotic resistance genes (β-lactamase and integron genes) using multiplex PCR. METHODS One-hundred K. pneumoniae isolates were collected from different clinical samples. Antibiotic susceptibility testing was performed with thirteen different antibiotics. Multiplex-PCR was used to detect β-lactamase (bla TEM, bla CTX-M, bla SHV , bla VEB, bla PER, bla GES, bla VIM, bla IMP, bla OXA, and bla KPC) and integron genes (int I, int II, and int III). RESULTS: The highest and lowest rate of resistance was exhibited against amikacin (93%) and imipenem (8%), respectively. The frequency of β-lactamase-positive K. pneumoniae was 37%, and the prevalence of the bla TEM, bla CTX-M, bla SHV , bla VEB, bla PER, bla GES, bla VIM, bla IMP, bla OXA, and bla KPC genes was 38%, 24%, 19%, 12%, 6%, 11%, 33%, 0%, 28%, and 23%, respectively. Of the 100 isolates, eight (8%) were positive for class I integrons; however, class II and III integrons were not detected in any of the strains. CONCLUSIONS: These results indicate co-carriage of a number of β-lactamase genes and antibiotic resistance integrons on the same plasmids harboring multi-drug resistance genes. It seems that these properties help to decrease treatment complications due to resistant bacterial infections by rapid detection, infection-control programs and prevention of transmission of drug resistance.
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Affiliation(s)
- Mansour Sedighi
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Masoumeh Halajzadeh
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Rashid Ramazanzadeh
- Cellular & Molecular Research Center, Kurdistan University of Medical Sciences, Sanandaj, Islamic Republic of Iran.,Department of Microbiology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Islamic Republic of Iran
| | - Noor Amirmozafari
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Mohsen Heidary
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Serve Pirouzi
- School of Hejab, Baneh management, Department of Kurdistan Education and Training, Department of Iran Education and Training, Baneh, Islamic Republic of Iran
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21
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Sangare SA, Maiga AI, Guindo I, Maiga A, Camara N, Savadogo S, Diallo S, Bougoudogo F, Armand-Lefevre L, Andremont A, Maiga II. Prevalence of extended-spectrum beta-lactamase-producing Enterobacteriaceae isolated from blood cultures in Africa. Med Mal Infect 2016; 45:374-82. [PMID: 26433872 DOI: 10.1016/j.medmal.2015.08.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 06/09/2015] [Accepted: 08/31/2015] [Indexed: 11/15/2022]
Abstract
Extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae have been isolated from many regions of the world. Epidemiological studies are being conducted in Europe, North America, and Asia. No study has however been conducted in Africa to determine the prevalence and distribution of ESBLs on the continent. This literature review aimed at describing the prevalence of ESBL-producing Enterobacteriaceae isolated from blood cultures, as well as the ESBL genes involved at the international level. Our focus was mainly on Africa. We conducted a literature review on PubMed. Articles related to our study field and published between 1996 and 2014 were reviewed and entirely read for most of them, while we only focused on the abstracts of some other articles. Relevant articles to our study were then carefully reviewed and included in the review. The prevalence of ESBL-producing Enterobacteriaceae differs from one country to another. The results of our literature review however indicate that class A ESBLs prevail over the other types. We took into consideration articles focusing on various types of samples to assess the prevalence of ESBL-producing Enterobacteriaceae, but information on isolates from blood cultures is limited. The worldwide prevalence of ESBL-producing Enterobacteriaceae has increased over time. Evidence of ESBL-producing Enterobacteriaceae can be found in all regions of the world. Studies conducted in Africa mainly focused on the Northern and Eastern parts of the continent, while only rare studies were carried out in the rest of the continent.
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Affiliation(s)
- S A Sangare
- Laboratory of bacteriology, university hospital Gabriel-Touré, Bamako, Mali; Laboratory of bacteriology, university hospital Bichat-Claude Bernard and UMR Inserm 1137 Iame, 46, rue Henri-Huchard, 75018 Paris, France; Faculty of pharmacy, university of sciences, techniques, and technologies of Bamako (USTTB), Bamako, Mali.
| | - A I Maiga
- Laboratory of bacteriology, university hospital Gabriel-Touré, Bamako, Mali; Faculty of pharmacy, university of sciences, techniques, and technologies of Bamako (USTTB), Bamako, Mali
| | - I Guindo
- Faculty of pharmacy, university of sciences, techniques, and technologies of Bamako (USTTB), Bamako, Mali; National institute for research in public health, Bamako, Mali
| | - A Maiga
- Laboratory of bacteriology, university hospital Point G, Bamako, Mali
| | - N Camara
- Laboratory of bacteriology, university hospital Gabriel-Touré, Bamako, Mali
| | - S Savadogo
- Laboratory of bacteriology, university hospital Point G, Bamako, Mali
| | - S Diallo
- Faculty of pharmacy, university of sciences, techniques, and technologies of Bamako (USTTB), Bamako, Mali; Infectious diseases center "Charles Mérieux", Bamako, Mali
| | - F Bougoudogo
- Faculty of pharmacy, university of sciences, techniques, and technologies of Bamako (USTTB), Bamako, Mali; National institute for research in public health, Bamako, Mali
| | - L Armand-Lefevre
- Laboratory of bacteriology, university hospital Bichat-Claude Bernard and UMR Inserm 1137 Iame, 46, rue Henri-Huchard, 75018 Paris, France
| | - A Andremont
- Laboratory of bacteriology, university hospital Bichat-Claude Bernard and UMR Inserm 1137 Iame, 46, rue Henri-Huchard, 75018 Paris, France
| | - I I Maiga
- Laboratory of bacteriology, university hospital Point G, Bamako, Mali; Faculty of medicine and odonto-stomatology, university of sciences, techniques, and technologies of Bamako (USTTB), Bamako, Mali
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22
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Guo Y, Zhou H, Qin L, Pang Z, Qin T, Ren H, Pan Z, Zhou J. Frequency, Antimicrobial Resistance and Genetic Diversity of Klebsiella pneumoniae in Food Samples. PLoS One 2016; 11:e0153561. [PMID: 27078494 PMCID: PMC4831839 DOI: 10.1371/journal.pone.0153561] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 03/31/2016] [Indexed: 12/01/2022] Open
Abstract
This study aimed to assess the frequency of Klebsiella pneumoniae in food samples and to detect antibiotic resistance phenotypes, antimicrobial resistance genes and the molecular subtypes of the recovered isolates. A total of 998 food samples were collected, and 99 (9.9%) K. pneumoniae strains were isolated; the frequencies were 8.2% (4/49) in fresh raw seafood, 13.8% (26/188) in fresh raw chicken, 11.4% (34/297) in frozen raw food and 7.5% (35/464) in cooked food samples. Antimicrobial resistance was observed against 16 antimicrobials. The highest resistance rate was observed for ampicillin (92.3%), followed by tetracycline (31.3%), trimethoprim-sulfamethoxazole (18.2%), and chloramphenicol (10.1%). Two K. pneumoniae strains were identified as extended-spectrum β-lactamase (ESBL)–one strain had three beta-lactamases genes (blaSHV, blaCTX-M-1, and blaCTX-M-10) and one had only the blaSHV gene. Nineteen multidrug-resistant (MDR) strains were detected; the percentage of MDR strains in fresh raw chicken samples was significantly higher than in other sample types (P<0.05). Six of the 18 trimethoprim-sulfamethoxazole-resistant strains carried the folate pathway inhibitor gene (dhfr). Four isolates were screened by PCR for quinolone resistance genes; aac(6’)-Ib-cr, qnrB, qnrA and qnrS were detected. In addition, gyrA gene mutations such as T247A (Ser83Ile), C248T (Ser83Phe), and A260C (Asp87Ala) and a parC C240T (Ser80Ile) mutation were identified. Five isolates were screened for aminoglycosides resistance genes; aacA4, aacC2, and aadA1 were detected. Pulsed-field gel electrophoresis-based subtyping identified 91 different patterns. Our results indicate that food, especially fresh raw chicken, is a reservoir of antimicrobial-resistant K. pneumoniae, and the potential health risks posed by such strains should not be underestimated. Our results demonstrated high prevalence, antibiotic resistance rate and genetic diversity of K. pneumoniae in food in China. Improved control and prevention strategies are urgently needed.
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Affiliation(s)
- Yumei Guo
- Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang, People’s Republic of China
| | - Haijian Zhou
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, People’s Republic of China
- * E-mail: (HZ); (JZ)
| | - Liyun Qin
- Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang, People’s Republic of China
| | - Zhizhao Pang
- Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang, People’s Republic of China
| | - Tian Qin
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, People’s Republic of China
| | - Hongyu Ren
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of China
| | - Zhuo Pan
- Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang, People’s Republic of China
| | - Jikun Zhou
- Shijiazhuang Center for Disease Control and Prevention, Shijiazhuang, People’s Republic of China
- * E-mail: (HZ); (JZ)
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Latifpour M, Gholipour A, Damavandi MS. Prevalence of Extended-Spectrum Beta-Lactamase-Producing Klebsiella pneumoniae Isolates in Nosocomial and Community-Acquired Urinary Tract Infections. Jundishapur J Microbiol 2016; 9:e31179. [PMID: 27226874 PMCID: PMC4877671 DOI: 10.5812/jjm.31179] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 12/23/2015] [Accepted: 01/12/2016] [Indexed: 12/02/2022] Open
Abstract
Background Klebsiella pneumoniae is a family member of Enterobacteriaceae. Isolates of K. pneumoniae produce enzymes that cause decomposition of third generation cephalosporins. These enzymes are known as extended-spectrum beta-lactamase (ESBL). Resistance of K. pneumoniae to beta-lactamase antibiotics is commonly mediated by beta-lactamase genes. Objectives The aim of this study was to identify the ESBL produced by K. pneumoniae isolates that cause community-acquired and nosocomial urinary tract infections within a one-year period (2013 to 2014) in Kashani and Hajar university hospitals of Shahrekord, Iran. Patients and Methods From 2013 to 2014, 150 strains of K. pneumoniae isolate from two different populations with nosocomial and community-acquired infections were collected. The strains were then investigated by double disk synergism and multiplex polymerase chain reaction (PCR). Results The study population of 150 patients with nosocomial and community-acquired infections were divided to two groups of 75 each. We found that 48 of the K. pneumoniae isolates in the patients with nosocomial infection and 39 isolates in those with community-acquired infections produced ESBL. The prevalence of TEM1, SHV1 and VEB1 in ESBL-producing isolates in nosocomial patients was 24%, 29.3% and 10.6%, and in community-acquired patients, 17.3%, 22.7% and 8%, respectively. Conclusions The prevalence of ESBL-producing K. pneumoniae isolate is of great concern; therefore, continuous investigation seems essential to monitor ESBL-producing bacteria in patients with nosocomial and community-acquired infections.
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Affiliation(s)
- Mohammad Latifpour
- Department of Microbiology and Immunology, Cellular and Molecular Research Center, Shahrekord University of Medical Sciences, Shahrekord, IR Iran
| | - Abolfazl Gholipour
- Department of Microbiology and Immunology, Cellular and Molecular Research Center, Shahrekord University of Medical Sciences, Shahrekord, IR Iran
- Corresponding author: Abolfazl Gholipour, Department of Microbiology and Immunology, Cellular and Molecular Research Center, Shahrekord University of Medical Sciences, Shahrekord, IR Iran, E-mail:
| | - Mohammad Sadegh Damavandi
- Department of Microbiology and Immunology, Cellular and Molecular Research Center, Shahrekord University of Medical Sciences, Shahrekord, IR Iran
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High prevalence of multidrug-resistance in Acinetobacter baumannii and dissemination of carbapenemase-encoding genes blaOXA-23-like, blaOXA-24-like and blaNDM-1 in Algiers hospitals. ASIAN PAC J TROP MED 2015. [DOI: 10.1016/j.apjtm.2015.05.011] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Yahiaoui M, Robin F, Bakour R, Hamidi M, Bonnet R, Messai Y. Antibiotic Resistance, Virulence, and Genetic Background of Community-Acquired Uropathogenic Escherichia coli from Algeria. Microb Drug Resist 2015; 21:516-26. [PMID: 26430940 DOI: 10.1089/mdr.2015.0045] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The aim of the study was to investigate antibiotic resistance mechanisms, virulence traits, and genetic background of 150 nonrepetitive community-acquired uropathogenic Escherichia coli (CA-UPEC) from Algeria. A rate of 46.7% of isolates was multidrug resistant. bla genes detected were blaTEM (96.8% of amoxicillin-resistant isolates), blaCTX-M-15 (4%), overexpressed blaAmpC (4%), blaSHV-2a, blaTEM-4, blaTEM-31, and blaTEM-35 (0.7%). All tetracycline-resistant isolates (51.3%) had tetA and/or tetB genes. Sulfonamides and trimethoprim resistance genes were sul2 (60.8%), sul1 (45.9%), sul3 (6.7%), dfrA14 (25.4%), dfrA1 (18.2%), dfrA12 (16.3%), and dfrA25 (5.4%). High-level fluoroquinolone resistance (22.7%) was mediated by mutations in gyrA (S83L-D87N) and parC (S80I-E84G/V or S80I) genes. qnrB5, qnrS1, and aac(6')-Ib-cr were rare (5.3%). Class 1 and/or class 2 integrons were detected (40.7%). Isolates belonged to phylogroups B2+D (50%), A+B1 (36%), and F+C+Clade I (13%). Most of D (72.2%) and 38.6% of B2 isolates were multidrug resistant; they belong to 14 different sequence types, including international successful ST131, ST73, and ST69, reported for the first time in the community in Algeria and new ST4494 and ST4529 described in this study. Besides multidrug resistance, B2 and D isolates possessed virulence factors of colonization, invasion, and long-term persistence. The study highlighted multidrug-resistant CA-UPEC with high virulence traits and an epidemic genetic background.
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Affiliation(s)
- Merzouk Yahiaoui
- 1 Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene , Algiers, Algeria
| | - Frédéric Robin
- 2 CHU Clermont-Ferrand, Laboratoire de Bactériologie , Clermont-Ferrand, France .,3 Clermont Université, Université d'Auvergne , Evolution des Bactéries Pathogènes et Susceptibilité de l'Hôte, Clermont-Ferrand, France
| | - Rabah Bakour
- 1 Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene , Algiers, Algeria
| | | | - Richard Bonnet
- 2 CHU Clermont-Ferrand, Laboratoire de Bactériologie , Clermont-Ferrand, France .,3 Clermont Université, Université d'Auvergne , Evolution des Bactéries Pathogènes et Susceptibilité de l'Hôte, Clermont-Ferrand, France
| | - Yamina Messai
- 1 Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene , Algiers, Algeria
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Molecular characterization of extended spectrum beta-lactamases produced by Klebsiella pneumoniae clinical strains from a Tunisian Hospital. Med Mal Infect 2015; 45:139-43. [DOI: 10.1016/j.medmal.2015.01.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 12/29/2014] [Accepted: 01/20/2015] [Indexed: 11/22/2022]
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Betitra Y, Teresa V, Miguel V, Abdelaziz T. Determinants of quinolone resistance in Escherichia coli causing community-acquired urinary tract infection in Bejaia, Algeria. ASIAN PAC J TROP MED 2015; 7:462-7. [PMID: 25066395 DOI: 10.1016/s1995-7645(14)60075-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Revised: 01/15/2014] [Accepted: 02/15/2014] [Indexed: 10/25/2022] Open
Abstract
OBJECTIVE To investigate the mechanisms of quinolone resistance and the association with other resistance markers among Esherichia coli (E. coli) strains isolated from outpatient with urinary tract infection in north of Algeria. METHODS A total of 30 nalidixic acid-resistant E. coli isolates from outpatient with urinary tract infections from January 2010 to April 2011 in north of Algeria (Bejaia) were studied. Antimicrobial susceptibility was determined by disc diffusion assay, minimal inhibitory concentrations (MIC) of quinolone were determined by microdilution. Mutations in the Quinolone Resistance-Determining Region (QRDR) of gyrA and parC genes and screening for qnr (A, B and S) and bla genes were done by PCR and DNA sequencing. RESULTS Most of the E. coli isolates (56.66%) were shown to carry mutations in gyrA and parC (gyrA: Ser83Leu + Asp87Asn and parC:Ser80Ile). While, 16.66% had only an alteration in gyrA: Ser83Leu. One isolate produced qnrB-like and two qnrS-like. Four isolates were CTX-M-15 producers associated with TEM-1 producing in one case. Co-expression of blaCTX-M-15 and qnrB was determined in one E. coli isolate. CONCLUSIONS Our findings suggested the community emergence of gyrA and parC alterations and Qnr determinants that contributed to the development and spread of fluoroquinolone resistance in Algerian E. coli isolates.
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Affiliation(s)
- Yanat Betitra
- Laboratoire d'écologie Microbiologie. Université A/Mira de Bejaia, Algérie; Laboratory of Molecular Microbiology and Antibiotics, Dept. Pathology and Experimental therapeutics. Medical School, University of Barcelona, Spain
| | - Vinuesa Teresa
- Laboratory of Molecular Microbiology and Antibiotics, Dept. Pathology and Experimental therapeutics. Medical School, University of Barcelona, Spain
| | - Viñas Miguel
- Laboratory of Molecular Microbiology and Antibiotics, Dept. Pathology and Experimental therapeutics. Medical School, University of Barcelona, Spain
| | - Touati Abdelaziz
- Laboratoire d'écologie Microbiologie. Université A/Mira de Bejaia, Algérie.
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Meguenni N, Le Devendec L, Jouy E, Le Corvec M, Bounar-Kechih S, Bakour R, Kempf I. First Description of an Extended-Spectrum Cephalosporin- and Fluoroquinolone-Resistant Avian PathogenicEscherichia coliClone in Algeria. Avian Dis 2015; 59:20-3. [DOI: 10.1637/10804-022414-reg.1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Ali Abdel Rahim KA, Ali Mohamed AM. Prevalence of Extended Spectrum β-lactamase-Producing Klebsiella pneumoniae in Clinical Isolates. Jundishapur J Microbiol 2014; 7:e17114. [PMID: 25774279 PMCID: PMC4332241 DOI: 10.5812/jjm.17114] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Revised: 03/02/2014] [Accepted: 04/14/2014] [Indexed: 11/24/2022] Open
Abstract
Background: Extended spectrum β-lactamase (ESBL) are gram-negative bacteria that produce the enzyme, β-lactamase, which can break down commonly used antibiotics, such as penicillin and cephalosporins, making infections with ESBL producing bacteria more difficult to treat. Extended spectrum β-lactamase-producing Klebsiella pneumoniae were first reported in 1983 from Germany, and since then a steady increase in resistance against cephalosporins has been seen causing health problems. Objectives: The aim of this study was to determine the prevalence of ESBL in strains of K. pneumoniae isolated from different clinical samples. Patients and Methods: One hundred and thirty isolates of K. pneumoniae were isolated from different clinical specimens from King Khalid hospital, Hafr Elbatin, Kingdom Saudi Arabia. These isolates were then characterized, tested for antimicrobial susceptibility and screened for ESBL production by the MicroScan WalkAway-96 SI System. Extended spectrum β-lactamase production was confirmed by the phenotypic confirmatory disc diffusion test (PCDDT) and the double disc synergy test (DDST). Results: Overall, 76.9% (100) of the isolates were resistant to cefuroxime, cefepime and cefazolin, 69.23% (90) were resistant to cefotaxime, and 46.15% (60) were resistant to cefoxitin. Extended spectrum β-lactamase was detected in 53.8% (70) of K. pneumoniae as detected by the MicroScan “WalkAway-96” SI System and 50.07% (66) by PCDDT and 46.15% (60) by DDST. All K. pneumoniae isolates were resistant to ampicillin followed by both piperacillin and mezlocillin 92.30% (120). K.pneumoniae isolates showed high sensitivity to imipenem (15.38%) (20), followed by ertapenem, tetracycline, tigecycline pipracilline/tazobactam and amikacin (23.07%) (30). Conclusions: Our study showed that the prevalence of ESBL-producing K. pneumoniae at King Khalid Hospital was significantly high. Routine detection of ESBL-producing microorganisms is required by each of the laboratory standard detection methods to control the spread of these infections and allow a proper therapeutic strategy. For detection, the phenotypic confirmatory disc diffusion test is simple, sensitive and cost effective. However, there is a need for larger scale drug susceptibility surveillance.
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Affiliation(s)
- Khalid Abdalla Ali Abdel Rahim
- Botany and Microbiology Department, College of Science, King Saud University, Saudi Arabia
- Botany Department, Faculty of Science, Sohag University, Sohag, Egypt
- Corresponding author: Khalid Abdalla Ali Abdel Rahim, Botany and Microbiology Department, College of Science, King Saud University P. O. Box: 2455, Saudi Arabia. Tel: +96-6114675818, Fax: +96-6114675833, E-mail:
| | - Ahmed Mohamed Ali Mohamed
- Department of Microbiology, College of Health Science, University of Dammam, Hafr Al Batin, Saudi Arabia
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Baba Ahmed-Kazi Tani Z, Arlet G. [News of antibiotic resistance among Gram-negative bacilli in Algeria]. ACTA ACUST UNITED AC 2014; 62:169-78. [PMID: 24819127 DOI: 10.1016/j.patbio.2014.01.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Accepted: 01/14/2014] [Indexed: 10/25/2022]
Abstract
Antibiotic resistance has become a major public health problem in Algeria. Indeed the past decade, we have seen a significant increase in resistance to antibiotics especially in Gram-negative bacilli. Resistance to β-lactams in enterobacteria is dominated by the production of ESBL CTX-M-3 and CTX-M-15. The strains producing these enzymes are often the cause of potentially serious infections in both hospital and community settings. Identified plasmid cephalosporinases are CMY-2, CMY-12 and DHA-1. The isolation of strains of Enterobacteriaceae and Pseudomonas aeruginosa producing carbapenemases is rare in Algeria. Some Enterobacteriaceae producing OXA-48 or VIM-19 have been reported; so far, only VIM-2 has been identified in P. aeruginosa. However, the situation regarding the strains of Acinetobacter baumannii resistant to carbapenemases seems to be more disturbing. The carbapenemase OXA-23 is the most common and seems to be endemic in the north. The carbapenemase NDM-1 has also been identified. Resistance to aminoglycosides is marked by the identification armA gene associated with blaCTX-M genes in strains of Salmonella sp. Several other resistance genes have been identified sporadically in strains of Enterobacteriaceae, P. aeruginosa and A. baumannii. Resistance genes to fluoroquinolones are more recent identification in Algeria. The most common are the Qnr determinants followed by the bifunctional enzyme AAC[6']-Ib-cr. Resistance to sulfonamides and trimethoprim was also reported in Enterobacteriaceae strains in the west of the country.
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Affiliation(s)
- Z Baba Ahmed-Kazi Tani
- Laboratoire « antibiotiques antifongiques : physico-chimie, synthèse et activité biologique », faculté des sciences de la nature et de la vie et sciences de la terre et de l'univers, université Abou Bekr Belkaïd, rocade 2, BP 119, Tlemcen, Algérie
| | - G Arlet
- Département de bactériologie, faculté de médecine, université Pierre-et-Marie-Curie, 27, rue de Chaligny, 75012 Paris, France; Département de bactériologie, hôpital Tenon, hôpitaux universitaires Est parisiens, Assistance publique-Hôpitaux de Paris, 4, rue de la Chine, 75970 Paris cedex 20, France.
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Du J, Li P, Liu H, Lü D, Liang H, Dou Y. Phenotypic and molecular characterization of multidrug resistant Klebsiella pneumoniae isolated from a university teaching hospital, China. PLoS One 2014; 9:e95181. [PMID: 24740167 PMCID: PMC3989316 DOI: 10.1371/journal.pone.0095181] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Accepted: 03/24/2014] [Indexed: 11/22/2022] Open
Abstract
The multidrug-resistant rate of Klebsiella pneumoniae has risen rapidly worldwide. To better understand the multidrug resistance situation and molecular characterization of Klebsiella pneumoniae, a total of 153 Klebsiella pneumoniae isolates were collected, and drug susceptibility test was performed to detect its susceptibility patterns to 13 kinds of antibiotics. Phenotypic tests for carbapenemases ESBLs and AmpC enzyme-producing strains were performed to detect the resistance phenotype of the isolates. Then PCR amplification and sequencing analysis were performed for the drug resistance determinants. The results showed that 63 strains harbored blaCTX-M gene, and 14 strains harbored blaDHA gene. Moreover, there were 5 strains carrying blaKPC gene, among which 4 strains carried blaCTX-M, blaDHA and blaKPC genes, and these 4 strains were also resistant to imipenem. Our data indicated that drug-resistant Klebsiella pneumoniae were highly prevalent in the hospital. Thus it is warranted that surveillance of epidemiology of those resistant isolates should be a cause for concern, and appropriate drugs should be chosen.
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Affiliation(s)
- Jikun Du
- Department of Clinical Laboratory, Shenzhen Shajing Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Peipei Li
- Department of Clinical Laboratory, Shenzhen Shajing Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Helu Liu
- Department of Clinical Laboratory, Shenzhen Shajing Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Dongyue Lü
- Department of Clinical Laboratory, Shenzhen Shajing Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Hong Liang
- Department of Clinical Laboratory, Shenzhen Shajing Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yuhong Dou
- Department of Clinical Laboratory, Shenzhen Shajing Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- * E-mail:
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Storberg V. ESBL-producing Enterobacteriaceae in Africa - a non-systematic literature review of research published 2008-2012. Infect Ecol Epidemiol 2014; 4:20342. [PMID: 24765249 PMCID: PMC3955770 DOI: 10.3402/iee.v4.20342] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Revised: 01/21/2014] [Accepted: 02/12/2014] [Indexed: 12/30/2022] Open
Abstract
INTRODUCTION Enterobacteriaceae producing extended-spectrum beta-lactamases (ESBL) has been found all over the world, and risk factors for acquiring these bacteria involve hospital care and antibiotic treatment. Surveillance studies are present in Europe, North America, and Asia, but there is no summarizing research published on the situation in Africa. AIM This review aims to describe the prevalence of ESBL-producing Enterobacteriaceae in hospital and community settings in Africa and the ESBL genes involved. METHOD A non-systematic literature search was performed in PubMed. All articles published between 2008 and 2012 were screened and read in full text. Relevant articles were assessed for quality of evidence and included in the review. Articles were divided into regional areas in Africa and tabulated. RESULTS ESBL-producing Enterobacteriaceae in hospitalized patients and in communities varies largely between countries and specimens but is common in Africa. ESBLs (class A and D) and plasmid-encoded AmpC (pAmpC) were regularly found, but carbapenemases were also present. CONCLUSION ESBL-producing Enterobacteriaceae in hospital and community settings in Africa is common. Surveillance of antimicrobial resistance needs to be implemented in Africa to tailor interventions targeted at stopping the dissemination of ESBL-producing Enterobacteriaceae.
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Affiliation(s)
- Viktor Storberg
- Department of Women's and Children's Health, International Maternal and Child Health, Uppsala University, Uppsala, Sweden
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Alouache S, Estepa V, Messai Y, Ruiz E, Torres C, Bakour R. Characterization of ESBLs and Associated Quinolone Resistance inEscherichia coliandKlebsiella pneumoniaeIsolates from an Urban Wastewater Treatment Plant in Algeria. Microb Drug Resist 2014; 20:30-8. [DOI: 10.1089/mdr.2012.0264] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Souhila Alouache
- Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene, Algiers, Algeria
- High National School of Marine Sciences and Coastal Management, Campus Universitaire de Dely-Ibrahim, Algiers, Algeria
| | - Vanesa Estepa
- Área de Bioquímica y Biología Molecular, Universidad de La Rioja, Logrono, Spain
| | - Yamina Messai
- Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene, Algiers, Algeria
| | - Elena Ruiz
- Área de Bioquímica y Biología Molecular, Universidad de La Rioja, Logrono, Spain
| | - Carmen Torres
- Área de Bioquímica y Biología Molecular, Universidad de La Rioja, Logrono, Spain
| | - Rabah Bakour
- Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene, Algiers, Algeria
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Anssour L, Messai Y, Derkaoui M, Alouache S, Estepa V, Somalo S, Torres C, Bakour R. ESBL, plasmidic AmpC, and associated quinolone resistance determinants in coliforms isolated from hospital effluent: first report ofqnrB2,qnrB9,qnrB19, andblaCMY-4in Algeria. J Chemother 2013; 26:74-9. [DOI: 10.1179/1973947813y.0000000115] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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35
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Aouiche A, Bijani C, Zitouni A, Mathieu F, Sabaou N. Antimicrobial activity of saquayamycins produced by Streptomyces spp. PAL114 isolated from a Saharan soil. J Mycol Med 2013; 24:e17-23. [PMID: 24139182 DOI: 10.1016/j.mycmed.2013.09.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2013] [Revised: 09/02/2013] [Accepted: 09/12/2013] [Indexed: 11/26/2022]
Abstract
A new strain of actinomycete designated PAL114, producing antimicrobial compounds, was isolated from a Saharan soil in Ghardaïa, Algeria. Morphological and chemical studies showed that this strain belonged to the genus Streptomyces. Two bioactive compounds, named P41A and P41B, were extracted by dichloromethane from the cell-free supernatant broth of strain PAL114 and were purified by HPLC. Minimum inhibitory concentrations of the pure antibiotics were determined against yeasts, filamentous fungi and bacteria, most of which are pathogenic or toxigenic for human and multiresistant to antibiotics. The strongest activities were observed against Candida albicans M3 and Bacillus subtilis ATCC 6633. The chemical structures of the compounds were determined by spectroscopic analysis of UV-visible and 1H and 13C NMR spectra and spectrometric analysis of mass spectrum. The compounds P41A and P41B were identified as saquayamycins A and C, respectively. These compounds belong to the aquayamycin-group antibiotics, which are known in the literature for their anticancer and antibacterial activities.
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Affiliation(s)
- A Aouiche
- Laboratoire de biologie des systèmes microbiens, École normale supérieure de Kouba, Alger, Algeria
| | - C Bijani
- Laboratoire de chimie de coordination (LCC), CNRS, université de Toulouse, UPS, INPT, LCC, 205, route de Narbonne, 31077 Toulouse, France
| | - A Zitouni
- Laboratoire de biologie des systèmes microbiens, École normale supérieure de Kouba, Alger, Algeria
| | - F Mathieu
- Université de Toulouse, laboratoire de génie chimique UMR 5503 (CNRS/INPT/UPS), ENSAT/INP de Toulouse, 1, avenue de l'Agrobiopôle, Castanet-Tolosan cedex, France
| | - N Sabaou
- Laboratoire de biologie des systèmes microbiens, École normale supérieure de Kouba, Alger, Algeria.
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Baba Ahmed-Kazi Tani Z, Decré D, Genel N, Boucherit-Otmani Z, Arlet G, Drissi M. Molecular and Epidemiological Characterization of Enterobacterial Multidrug-Resistant Strains in Tlemcen Hospital (Algeria) (2008–2010). Microb Drug Resist 2013; 19:185-90. [DOI: 10.1089/mdr.2012.0161] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Zaket Baba Ahmed-Kazi Tani
- Laboratoire “Antibiotiques Antifongiques: Physico-Chimie, Synthèse et Activité Biologique,” Université Abou Bekr Belkaïd, Tlemcen, Algérie
| | - Dominique Decré
- Département de Bactériologie, Faculté de Médecine, Université Pierre et Marie Curie, Paris, France
- Service de Microbiologie, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Nathalie Genel
- Département de Bactériologie, Faculté de Médecine, Université Pierre et Marie Curie, Paris, France
| | - Zahia Boucherit-Otmani
- Laboratoire “Antibiotiques Antifongiques: Physico-Chimie, Synthèse et Activité Biologique,” Université Abou Bekr Belkaïd, Tlemcen, Algérie
| | - Guillaume Arlet
- Département de Bactériologie, Faculté de Médecine, Université Pierre et Marie Curie, Paris, France
- Service de Bactériologie-Hygiène, Hôpital Tenon, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Mourad Drissi
- Laboratoire “Antibiotiques Antifongiques: Physico-Chimie, Synthèse et Activité Biologique,” Université Abou Bekr Belkaïd, Tlemcen, Algérie
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Berrazeg M, Drissi M, Medjahed L, Rolain JM. Hierarchical clustering as a rapid tool for surveillance of emerging antibiotic-resistance phenotypes in Klebsiella pneumoniae strains. J Med Microbiol 2013; 62:864-874. [PMID: 23449879 DOI: 10.1099/jmm.0.049437-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Antimicrobial resistance is on the rise, and its early detection and surveillance are critical to implement effective control measures. The aim of this study was to develop a rapid hierarchical clustering bioinformatic tool for application on antibiotic susceptibility testing (AST) results (resistant, intermediate, sensitive) of a series of Klebsiella pneumoniae clinical isolates from Algeria and from France for surveillance of antibiotic-resistance phenotypes. A total of 1011 K. pneumoniae strains were collected from August 2008 to December 2012: 221 clinical isolates from western Algeria and 790 clinical isolates from Marseille, France. AST against a panel of 16 antibiotics was done for all isolates. Results of AST were introduced into MultiExperiment Viewer (MeV) software to perform hierarchical clustering, with resistant, intermediate and sensitive being translated to 1, 0 and -1 values, respectively. Hierarchical clustering results were compared to standard resistance phenotypes to evaluate the accuracy of the method. Based on the AST results, the 221 K. pneumoniae strains from Algeria could be separated into six phenotype groups as regards their resistance to β-lactam compounds: extended spectrum β-lactamase (ESBL) (68.3 %), ESBL associated with cephalosporinase (13.1 %), cephalosporinase (0.9 %), penicillinase (3.6 %) and wild-type (14.0 %). Hierarchical clustering by the MeV software applied to the AST results for all 1011 isolates generated clusters that were significantly representative of phenotypic classification and geographical origin, in less than 1 min. Moreover, adding to the dataset the AST results of a K. pneumoniae NDM-1 positive strain, the only strain resistant to imipenem in the series, immediately generated a new branch in the dendrogram. We have developed a rapid and simple hierarchical clustering tool for application on AST results that was able to survey qualitatively and quantitatively the prevalence of known and unknown phenotypes. This tool could be easily implemented in routine clinical microbiology laboratories.
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Affiliation(s)
- Meryem Berrazeg
- Laboratoire Antibiotiques, Antifongiques: Physico-chimie, Synthèse et Activité Biologiques (LAPSAB), Faculté des Sciences de la Nature, de la Vie, de la Terre et de l'Univers, Université Abou Bekr Belkaid - Tlemcen, Bp 119, Tlemcen 13000, Algeria
- Aix-Marseille Université, URMITE CNRS-IRD, UMR 6236 INSERM, IHU Méditerranée Infection, Faculté de Médecine et de Pharmacie, 27 Bd Jean Moulin 13385 Marseille Cedex 05, France
| | - Mourad Drissi
- Laboratoire Antibiotiques, Antifongiques: Physico-chimie, Synthèse et Activité Biologiques (LAPSAB), Faculté des Sciences de la Nature, de la Vie, de la Terre et de l'Univers, Université Abou Bekr Belkaid - Tlemcen, Bp 119, Tlemcen 13000, Algeria
| | - Lakhdar Medjahed
- Département d'Informatique, Faculté de Technologie, Université Abou Bekr Belkaid - Tlemcen, Bp 119, Tlemcen 13000, Algeria
| | - Jean Marc Rolain
- Aix-Marseille Université, URMITE CNRS-IRD, UMR 6236 INSERM, IHU Méditerranée Infection, Faculté de Médecine et de Pharmacie, 27 Bd Jean Moulin 13385 Marseille Cedex 05, France
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Mahrouki S, Bourouis A, Chihi H, Ouertani R, Ferjani M, Moussa MB, Barguellil F, Belhadj O. First characterisation of plasmid-mediated quinolone resistance-qnrS1 co-expressed bla and bla genes in clinical strain of Morganella morganii recovered from a Tunisian Intensive Care Unit. Indian J Med Microbiol 2012. [DOI: 10.4103/0255-0857.103765] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kermas R, Touati A, Brasme L, Le Magrex-Debar E, Mehrane S, Weill FX, De Champs C. Characterization of extended-spectrum beta-lactamase-producing Salmonella enterica serotype Brunei and Heidelberg at the Hussein Dey hospital in Algiers (Algeria). Foodborne Pathog Dis 2012; 9:803-8. [PMID: 22871227 DOI: 10.1089/fpd.2012.1159] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The purpose of this work was to study the genetic determinants responsible for extended-spectrum cephalosporin (ESC) resistance of Salmonella collected during the period of 1995-2008 at the Hussein Dey hospital in Algiers (Algeria). Fourteen ESC-resistant Salmonella isolates were tested towards 22 antimicrobial agents. Polymerase chain reaction (PCR) and sequencing were used to determine the underlying genetic determinants responsible for the extended-spectrum beta-lactamase (ESBL) phenotypes. Enterobacterial Repetitive Intergenic Consensus PCR was employed to type the isolates. All tested isolates were resistant to ticarcillin, ticarcillin-clavulanate, piperacillin, cefuroxime, aztreonam, ceftazidime, cefotaxime (except two isolates), cefepime, and cefpirome. PCR and DNA sequencing identified these ESBLs as TEM-48 (n=6), TEM-4 (n=3), CTX-M-15 (n=4), and one new TEM, designated TEM-188. Thus, continued surveillance for the presence of ESBL-producing (non-typhoidal) salmonellae in Algeria is essential.
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Affiliation(s)
- Rachida Kermas
- Département de Microbiologie, FSNV, Université A/MIRA de Béjaia, Béjaia, Algeria
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Aouiche A, Sabaou N, Meklat A, Zitouni A, Mathieu F, Lebrihi A. Activité antimicrobienne de Streptomyces sp. PAL111 d’origine saharienne contre divers microorganismes cliniques et toxinogènes résistants aux antibiotiques. J Mycol Med 2012. [DOI: 10.1016/j.mycmed.2011.12.077] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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41
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Sarojamma V, Ramakrishna V. Prevalence of ESBL-Producing Klebsiella pneumoniae Isolates in Tertiary Care Hospital. ISRN MICROBIOLOGY 2011; 2011:318348. [PMID: 23724303 PMCID: PMC3658478 DOI: 10.5402/2011/318348] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Accepted: 10/19/2011] [Indexed: 11/23/2022]
Abstract
Extended-spectrum β lactamases (ESBLs) continue to be a major challenge in clinical setups world over, conferring resistance to the expanded-spectrum cephalosporins. An attempt was made to study the prevalence of ESBL-producing Klebsiella pneumoniae clinical isolates in a tertiary care hospital in Kurnool. A total of hundred collected isolates of Klebsiella pneumoniae was studied for their susceptibility patterns to various antibiotics and detection of ESBL producers by double disc synergy test (DDST) and phenotypic confirmatory disc diffusion test (PCDDT). Of the 100 isolates tested for their antibiogram, 61% isolates have shown susceptibility to 3rd-generation cepholosporins and 39% were resistant. Amoxycillin showed the highest percentage of resistance followed by tetracyclins and cotrimoxazole. Among 39 resistant isolates of Klebsiella pneumoniae, 17 were ESBL producers detected by DDST and PCDDT. ESBL producers were more in the hospital isolates (28%) compared to community isolates (6%). Maximum percentage of ESBL producers were noticed from blood sample with 57.14%. In the present study, a large number of isolates were found to be multidrug resistant and ESBL producers. PCDDT was found to be better than DDST in the detection of ESBLs. Continued monitoring of drug resistance is necessary in clinical settings for proper disease management.
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Affiliation(s)
- Vemula Sarojamma
- Department of Microbiology, Government Medical College, Anantapur 515001, India
| | - Vadde Ramakrishna
- Department of Biotechnology and Bioinformatics, Yogi Vemana University, Kadapa 516003, India
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Alouache S, Kada M, Messai Y, Estepa V, Torres C, Bakour R. Antibiotic resistance and extended-spectrum β-lactamases in isolated bacteria from seawater of Algiers beaches (Algeria). Microbes Environ 2011; 27:80-6. [PMID: 22095134 PMCID: PMC4036028 DOI: 10.1264/jsme2.me11266] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
The aim of the study was to evaluate bacterial antibiotic resistance in seawater from four beaches in Algiers. The most significant resistance rates were observed for amoxicillin and ticarcillin, whereas they were relatively low for ceftazidime, cefotaxime and imipenem. According to sampling sites, the highest resistance rates were recorded for 2 sites subjected to chemical and microbiological inputs (amoxicillin, 43% and 52%; ticarcillin, 19.6% and 47.7%), and for 2 sites relatively preserved from anthropogenic influence, resistance rates were lowest (amoxicillin, 1.5% and 16%; ticarcillin, 0.8% and 2.6%). Thirty-four bacteria resistant to imipenem (n=14) or cefotaxime (n=20) were identified as Pseudomonas aeruginosa (n=15), Pseudomonas fluorescens (7), Stenotrophomonas maltophilia (4), Burkholderia cepacia (2), Bordetella sp. (1), Pantoea sp. (1), Acinetobacter baumannii (1), Chryseomonas luteola (1), Ochrobactrum anthropi (1) and Escherichia coli (1). Screening for extended spectrum β-lactamase showed the presence of CTX-M-15 β-lactamase in the E. coli isolate, and the encoding gene was transferable in association with the IncI1 plasmid of about 50 kbp. Insertion sequence ISEcp1B was located upstream of the CTX-M-15 gene. This work showed a significant level of resistance to antibiotics, mainly among environmental saprophytic bacteria. Transmissible CTX-M-15 was detected in E. coli; this may mean that contamination of the environment by resistant bacteria may cause the spread of resistance genes.
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Affiliation(s)
- Souhila Alouache
- Laboratoire de Biologie Cellulaire et Moléculaire, Faculté des Sciences Biologiques, Université des Sciences et de la Technologie Houari-Boumédiène, Alger, Algeria
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Nedjai S, Barguigua A, Djahmi N, Jamali L, Zerouali K, Dekhil M, Timinouni M. Prevalence and characterization of extended spectrum β-lactamases in Klebsiella-Enterobacter-Serratia group bacteria, in Algeria. Med Mal Infect 2011; 42:20-9. [PMID: 22056377 DOI: 10.1016/j.medmal.2011.10.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2011] [Revised: 05/23/2011] [Accepted: 10/03/2011] [Indexed: 11/28/2022]
Abstract
OBJECTIVES The authors had for aim to assess the local epidemiology, antibiotic resistance, and molecular typing of expanded spectrum betalactamase producing Klebsiella, Enterobacter, and Serratia (ESBL KES). MATERIALS AND METHODS Two hundred and seven strains of the KES group were isolated in the microbiology laboratory of the Annaba Ibn Rochd hospital in 2009. The antibiotic resistance (diffusion method and MIC) was tested and ESBL detection was performed as recommended by the Clinical Laboratory Standard Institute (CLSI). The characterization of genes for resistance to β-lactams (CTX-M-1, TEM, and SHV) and AmpC cephalosporinase (DHA-1) was performed by polymerase chain reaction. The epidemiological relationship among identified strains was analyzed by Pulsed Field Gel Electrophoresis (PFGE). Genetic transfers were performed by conjugation using sodium azide resistant Escherichia coli K(12)J(5) as recipient strain. RESULTS The overall incidence of ESBL KES was 31.4% (65/207) distributed as follows: 17.4% of Klebsiella spp., 7.2% Enterobacter spp., and 6.8% Serratia marcescens. The β-lactamase CTX-M 1 types were predominant (88%), followed by TEM (36.5%), and SHV (31.1%). Twenty-three strains expressed at least two bla genes. DHA-1 type cephalosporinase was found in 4 E. cloacae associated with CTX-M-1. Several epidemic clones were determined. Conjugation experiments showed that bla(CTX-M), bla(TEM), and bla(SHV) were carried by conjugative plasmids of high molecular weight (≥125kb). CONCLUSIONS This study revealed a high frequency of ESBL KES with a predominance of CTX-M-1. This high rate of ESBLs could be due to a clonal spread and the emergence of new epidemic clones.
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Affiliation(s)
- S Nedjai
- Service de microbiologie, CHU Ibn Rochd, Annaba, Algeria.
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Saccharothrix sp. PAL54, a new chloramphenicol-producing strain isolated from a Saharan soil. World J Microbiol Biotechnol 2011; 28:943-51. [DOI: 10.1007/s11274-011-0892-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2011] [Accepted: 09/13/2011] [Indexed: 10/17/2022]
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45
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Meradi L, Djahoudi A, Abdi A, Bouchakour M, Perrier Gros Claude JD, Timinouni M. Résistance aux quinolones de types qnr, aac (6′)-Ib-cr chez les entérobactéries isolées à Annaba en Algérie. ACTA ACUST UNITED AC 2011; 59:e73-8. [DOI: 10.1016/j.patbio.2009.05.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2009] [Accepted: 05/15/2009] [Indexed: 10/20/2022]
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46
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Ma L, Siu LK, Lu PL. Effect of spacer sequences between bla(CTX-M) and ISEcp1 on bla(CTX-M) expression. J Med Microbiol 2011; 60:1787-1792. [PMID: 21799195 DOI: 10.1099/jmm.0.033910-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Spacer sequences of 42 and 127 bp, respectively, between the ISEcp1 insertion sequence and bla(CTX-M) have been observed in Klebsiella pneumoniae. However, it is not known whether different spacers upstream of bla(CTX-M) and a promoter within the 127 bp spacer influence cephalosporin resistance. Three recombinant plasmids with different spacers and with or without ISEcp1 were constructed to compare bla(CTX-M-3) expression and susceptibility to cephalosporins. Our experiment revealed enhanced bla(CTX-M-3) expression and a relatively high level resistance to cefotaxime and cefepime in recombinant plasmid IS42CTX-M-3, which contained ISEcp1 and the 42 bp spacer. A minor difference in bla(CTX-M-3) expression was observed in recombinants IS127CTX-M-3 and 127CTX-M-3, which contained a 127 bp spacer with or without ISEcp1, respectively. In conclusion, the promoter within ISEcp1 and a shorter spacer (42 bp but not 127 bp) between ISEcp1 and bla(CTX-M) are necessary for high-level bla(CTX-M-3) expression.
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Affiliation(s)
- Ling Ma
- Division of Infectious Disease, National Health Research Institutes, Miaoli County, Taiwan, ROC
| | - Leung Kris Siu
- Division of Infectious Disease, National Health Research Institutes, Miaoli County, Taiwan, ROC
| | - Po-Liang Lu
- School of Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Taiwan, ROC.,Department of Internal Medicine and Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Taiwan, ROC
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Outbreak of Salmonella enterica serotype Infantis producing ArmA 16S RNA methylase and CTX-M-15 extended-spectrum β-lactamase in a neonatology ward in Constantine, Algeria. Int J Antimicrob Agents 2011; 38:135-9. [PMID: 21658916 DOI: 10.1016/j.ijantimicag.2011.04.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2010] [Revised: 04/11/2011] [Accepted: 04/13/2011] [Indexed: 11/20/2022]
Abstract
Plasmid-mediated 16S rRNA methylases such as ArmA, which confer high levels of resistance to aminoglycosides, are increasingly reported in Enterobacteriaceae. This study investigated the molecular mechanism of β-lactam and aminoglycoside resistance in extended-spectrum β-lactamase (ESBL)-producing Salmonella enterica serotype Infantis isolated at the 53-bed neonatology ward of University Hospital Benabib in Constantine, Algeria. From September 2008 to January 2009, 200 S. enterica isolates were obtained from 138 patients (age range 8-80 months) hospitalised in the neonatology ward. Most isolates were from stool cultures, but also from two blood cultures and one gastric fluid. The isolates were multidrug-resistant and produced TEM-1 and CTX-M-15 enzymes as well as the 16S RNA methylase ArmA. The armA, bla(CTX-M-15) and bla(TEM-1) genes were located on the same 140-kb self-transferable plasmid belonging to the IncL/M incompatibility group. All of the S. Infantis isolates belonged to a single clone. Increased infection control measures and thorough biodecontamination of the rooms led to control of the outbreak but did not eradicate the epidemic strain. This study further illustrates the global emergence of ArmA methylase and its frequent association with bla(CTX-M) genes. Spread of 16S RNA methylase determinants at the same level as bla(CTX-M) genes in Enterobacteriaceae may seriously compromise the efficacy of aminoglycosides for treating Gram-negative infections.
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Ramdani-Bouguessa N, Manageiro V, Jones-Dias D, Ferreira E, Tazir M, Caniça M. Role of SHV β-lactamase variants in resistance of clinical Klebsiella pneumoniae strains to β-lactams in an Algerian hospital. J Med Microbiol 2011; 60:983-987. [PMID: 21415202 DOI: 10.1099/jmm.0.030577-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Three clinical Klebsiella pneumoniae strains, KpARG74, KpARG220 and KpARG185, isolated from a hospital in Algeria, carried the novel β-lactamases SHV-98, SHV-99 and SHV-100, respectively, and co-expressed TEM-1 and either CTX-M-3 or CTX-M-15. In contrast, transformed cells possessing the genes for these novel β-lactamases, i.e. EcDH5α-SHV-98, EcDH5α-SHV-99 and EcDH5α-SHV-100, respectively, carried unique sequence features of bla(SHV) gene variants, enabling oxyimino-cephalosporin susceptibility and confirming that none of the transformants exhibited extended-spectrum β-lactamase (ESBL) properties. SHV-100 is apparently functional, despite differing from the SHV-1 sequence by duplication of 13 amino acids. The SHV-99 enzyme differed from the parental SHV-1 by the amino acid substitution Asp104→Gly, which is an important position in the development of the ESBL phenotype in TEM β-lactamases. This is the first time, to our knowledge, that this mutation has been reported in clinically occurring isolates. Thus, kinetic characterization of the SHV-99 enzyme was performed. The SHV-99 enzyme showed higher affinity (K(m) of 196 µM), catalytic activity (k(cat) of 0.5 s⁻¹) and catalytic efficiency (k(cat)/K(m) of 0.003 µM⁻¹ s⁻¹) than SHV-1 β-lactamase against aztreonam. These results showed that the neutral glycine at residue 104 increased the affinity of the enzyme to aztreonam, but was unable to develop the ESBL phenotype in SHV enzymes. As the emergence of new threatening combinations of resistance determinants among nosocomial pathogens is further possible, this study has highlighted the need to reverse the spread of initial mutations.
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Affiliation(s)
| | - Vera Manageiro
- Laboratory of Antimicrobial Resistance, National Institute of Health Dr Ricardo Jorge, Lisbon, Portugal
| | - Daniela Jones-Dias
- Laboratory of Antimicrobial Resistance, National Institute of Health Dr Ricardo Jorge, Lisbon, Portugal
| | - Eugénia Ferreira
- Laboratory of Antimicrobial Resistance, National Institute of Health Dr Ricardo Jorge, Lisbon, Portugal
| | - Mohamed Tazir
- Service de Microbiologie, Centre Hospitalo-Universitaire Mustapha Pacha, 16000 Algiers, Algeria
| | - Manuela Caniça
- Laboratory of Antimicrobial Resistance, National Institute of Health Dr Ricardo Jorge, Lisbon, Portugal
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Tollentino FM, Polotto M, Nogueira ML, Lincopan N, Neves P, Mamizuka EM, Remeli GA, De Almeida MTG, Rúbio FG, Nogueira MCL. High prevalence of bla(CTX-M) extended spectrum beta-lactamase genes in Klebsiella pneumoniae isolates from a tertiary care hospital: first report of bla(SHV-12), bla(SHV-31), bla(SHV-38), and bla(CTX-M-15) in Brazil. Microb Drug Resist 2010; 17:7-16. [PMID: 20795871 DOI: 10.1089/mdr.2010.0055] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The aim of this study was to investigate the presence and prevalence of bla(TEM), bla(SHV), and bla(CTX-M) and bla(GES)-like genes, responsible for extended spectrum beta-lactamases (ESBLs) production in clinical isolates of Klebsiella pneumoniae collected from a Brazilian tertiary care hospital. Sixty-five ESBL producing K. pneumoniae isolates, collected between 2005 and 2007, were screened by polymerase chain reaction (PCR). Identification of bla genes was achieved by sequencing. Genotyping of ESBL producing K. pneumoniae was performed by the enterobacterial repetitive intergenic consensus-PCR with cluster analysis by the Dice coefficient. The presence of genes encoding ESBLs was confirmed in 59/65 (90.8%) isolates, comprising 20 bla(CTX-M-2), 14 bla(CTX-M-59), 12 bla(CTX-M-15), 9 bla(SHV-12), 1 bla(SHV-2), 1 bla(SHV-2a), 1 bla(SHV-5), and 1 bla(SHV-31) genes. The ESBL genes bla(SHV-12), bla(SHV-31), and bla(CTX-M-15), and the chromosome-encoded SHV-type beta-lactamase capable of hydrolyzing imipenem were detected in Brazil for the first time. The analysis of the enterobacterial repetitive intergenic consensus-PCR band patterns revealed a high rate of multiclonal bla(CTX-M) carrying K. pneumoniae isolates (70.8%), suggesting that dissemination of encoding plasmids is likely to be the major cause of the high prevalence of these genes among the K. pneumoniae isolates considered in this study.
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Affiliation(s)
- Fernanda M Tollentino
- Laboratório de Microbiologia, Departamento de Doenças Dermatológicas, Infecciosas e Parasitárias, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, Brazil
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50
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Détection des gènes blaCTX-M-14 et aac(3)-II chez Salmonella enterica sérotype Kedougou en Algérie. Med Mal Infect 2009; 39:806-7. [DOI: 10.1016/j.medmal.2009.04.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2008] [Revised: 12/08/2008] [Accepted: 04/27/2009] [Indexed: 11/22/2022]
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