scholarly journals Multi-drug Resistant (MDR), Extended Spectrum Beta-lactamase (ESBL) and New Delhi Metallo Beta-lactamase (NDM) Producing Escherichia Coli in Rescued Sloth Bears (Melursus Ursinus), India

2021 ◽  
Author(s):  
O.R. Vinodhkumar ◽  
M. Karikalan ◽  
S. Ilayaraja ◽  
Arun A Sha ◽  
B.R. Singh ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Resistance Genes ◽  
Beta Lactamase ◽  
Drug Resistant ◽  
Extended Spectrum Beta Lactamase ◽  
E Coli ◽  
Extended Spectrum ◽  
Carbapenemase Gene ◽  
Sloth Bear ◽  
Melursus Ursinus

Abstract The study reports the MDR, ESBL, and NDM producing Escherichia coli (CRE) isolated from the rescued sloth bear (Melursus ursinus), India. The faecal samples of adult rescued sloth bear (n=21) were collected from a rescue center located in India during 2015-2016 and processed for isolation and antibacterial susceptibility pattern of E. coli. 45E. coli isolates were recovered, and on phenotypic screening, 23 were MDR, 17 were ESBL producers, and five were carbapenem-resistant (CR). The MDR isolates carried beta-lactamase, chloramphenicol, aminoglycosides, tetracycline, fluroquinone, and sulphadimidine resistance genes. All the phenotypic ESBL producing isolates had blaCTX-M genes. On genotypic screening, three CRE (60.0 %, 3/5) were positive for blaNDM carbapenemase gene. Efflux pump-mediated carbapenem resistance was noticed in two CRE isolates (40.0 %, 2/5).The CRE also isolates co-harbored AMR genes like blaTEM-1, blaAmpC, qnrA, qnrB, qnrS, tetA, tetB and sulI. Virulence screening of the resistant isolates revealed the presence of Stx1, Stx2, eae, hlyA genes.Plasmid incompatibility (Inc) typesof three NDM positive isolates revealed that two isolates blaNDM-5 gene on Incl1 an one isolate on IncF plasmid. Apart from NDM genes, the plasmids also carried tetracycline, beta-lactamase and quinolone resistance genes. The plasmid multilocus sequence typing (pMLST) of the E. coli Incl1 plasmid showed the Sequence Type (ST) 297.This appears to be the first report of multi-drug resistant, extended spectrum beta-lactamase (ESBL) producing and blaNDM-5geneson Incl1 and IncF plasmids in rescued sloth bear.

scholarly journals Genetic characterization of AmpC and extended-spectrum beta-lactamase (ESBL) phenotypes in Escherichia coli and Salmonella from Alberta poultry

2020 ◽  
Author(s):  
Tam Tran ◽  
Sylvia Checkley ◽  
Niamh Caffrey ◽  
Rashed Cassis ◽  
Chunu Mainali ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Gene Transfer ◽  
Horizontal Gene Transfer ◽  
Beta Lactamase ◽  
Drug Resistant ◽  
Gene Encoding ◽  
Extended Spectrum Beta Lactamase ◽  
E Coli ◽  
Extended Spectrum ◽  
Class 1

AbstractHorizontal gene transfer is an important mechanism which facilitates bacterial populations in overcoming antimicrobial treatment. In this study, a total of 120 Escherichia coli and 62 Salmonella enterica subsp. enterica isolates were isolated from poultry farms in Alberta. Fourteen serovars were identified among Salmonella isolates. Thirty one percent of E. coli isolates were multiclass drug resistant (resistant to ≥ 3 drug classes), while only about 16% of Salmonella isolates were multiclass drug resistant. Among those, eight E. coli isolates had an AmpC-type phenotype, and one Salmonella isolate had an extended-spectrum beta-lactamase (ESBL)-type β-lactamase phenotype. We identified both AmpC-type (blaCMY-2) and ESBL-type (blaTEM) genes in both E. coli and Salmonella isolates. Plasmids from eight of nine E. coli and Salmonella isolates were transferred to recipient strain E. coli J53 through conjugation. Transferable plasmids in above total eight E. coli and Salmonella isolates were also transferred into a lab-made sodium azide-resistant Salmonella recipient through conjugation. The class 1 integrase gene, int1, was detected on plasmids from two E. coli isolates. Further investigation of class 1 integron cassette regions revealed the presence of an aadA gene encoding streptomycin 3”-adenylyltransferase, an aadA1a/aadA2 gene encoding aminoglycoside 3”-O-adenyltransferase, and a putative adenylyltransferase gene. This study provides some insight into potential horizontal gene transfer events of antimicrobial resistance genes between E. coli and Salmonella in poultry production.

scholarly journals The Occurrence and Characterization of Extended-Spectrum-Beta-Lactamase-Producing Escherichia coli Isolated from Clinical Diagnostic Specimens of Equine Origin

Animals ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 28 ◽  
Author(s):  
Leta Elias ◽  
David C. Gillis ◽  
Tanya Gurrola-Rodriguez ◽  
Jeong Ho Jeon ◽  
Jung Hun Lee ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Pcr Analysis ◽  
Beta Lactamase ◽  
Extended Spectrum Beta Lactamase ◽  
E Coli ◽  
Esbl Gene ◽  
Extended Spectrum ◽  
Carbapenemase Gene ◽  
Type Gene

Escherichia coli isolates were recovered from clinical specimens of equine patients admitted to the Texas A&M Veterinary Medical Teaching Hospital over a five-year period. Ceftiofur resistance was used as a marker for potential extended-spectrum beta-lactamase (ESBL)-activity, and of the 48 ceftiofur-resistant E. coli isolates, 27.08% (n = 13) were phenotypically ESBL-positive. Conventional PCR analysis followed by the large-scalebla Finder multiplex PCR detected the ESBL genes, CTX-M-1 and SHV, in seven out of the 13 isolates. Moreover, beta-lactamase genes of TEM-1-type, BER-type (AmpC), and OXA-type were also identified. Sequencing of these genes resulted in identification of a novel TEM-1-type gene, called blaTEM-233, and a study is currently underway to determine if this gene confers the ESBL phenotype. Furthermore, this report is the first to have found E. coli ST1308 in horses. This subtype, which has been reported in other herbivores, harbored the SHV-type ESBL gene. Finally, one out of 13 E. coli isolates was PCR-positive for the carbapenemase gene, blaIMP-1 despite the lack of phenotypically proven resistance to imipenem. With the identification of novel ESBL gene variant and the demonstrated expansion of E. coli sequence types in equine patients, this study underscores the need for more investigation of equines as reservoirs for ESBL-producing pathogens.

scholarly journals Resistome characterization of extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli isolated from wastewater treatment utilities in Oregon

2021 ◽  
Author(s):  
Maeghan Easler ◽  
Clint Cheney ◽  
Jared D Johnson ◽  
Marjan Khorshidi Zadeh ◽  
Jacquelynn N Nguyen ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antibiotic Resistance ◽  
Wastewater Treatment ◽  
Virulence Factors ◽  
Resistance Genes ◽  
Antibiotic Resistance Genes ◽  
Beta Lactamase ◽  
Extended Spectrum Beta Lactamase ◽  
E Coli ◽  
Extended Spectrum

Infections resistant to broad spectrum antibiotics due to the emergence of extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae is of global concern. This study characterizes the resistome (i.e., entire ecology of resistance determinants) of 11 ESBL-producing Escherichia coli isolates collected from eight wastewater treatment utilities across Oregon. Whole genome sequencing was performed to identify the most abundant antibiotic resistance genes including ESBL-associated genes, virulence factors, as well as their sequence types. Moreover, the phenotypes of antibiotic resistance were characterized. ESBL-associated genes (i.e., blaCMY, blaCTX, blaSHV, blaTEM) were found in all but one of the isolates with five isolates carrying two of these genes (4 with blaCTX and blaTEM; 1 with blaCMY and blaTEM). The ampC gene and virulence factors were present in all the E. coli isolates. Across all the isolates, 31 different antibiotic resistance genes were identified. Additionally, all E. coli isolates harbored phenotypic resistance to beta-lactams (penicillins and cephalosporins), while eight of the 11 isolates carried multi-drug resistance phenotypes (resistance to three or more classes of antibiotics). Findings highlight the risks associated with the presence of ESBL-producing E. coli isolates in wastewater systems that have the potential to enter the environment and may pose direct or indirect risks to human health.

scholarly journals Antimicrobial Resistance Profile and Extended Spectrum Beta-Lactamase Resistance Genes in Escherichia coli from Poultry Droppings in Nasarawa, Nigeria

2021 ◽  
pp. 47-56
Author(s):  
S. C. Tama ◽  
Y. B. Ngwai ◽  
G. R. I. Pennap ◽  
I. H. Nkene ◽  
R. H. Abimiku ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Resistance ◽  
Resistance Genes ◽  
Beta Lactamase ◽  
Extended Spectrum Beta Lactamase ◽  
E Coli ◽  
Extended Spectrum ◽  
Antimicrobial Resistance Profile ◽  
Poultry Farms ◽  
Poultry Droppings

Aims: This study investigated the antimicrobial resistance profile and extended spectrum beta-lactamase resistance genes of Escherichia coli isolated from droppings of from selected poultry farms in Nasarawa, Nigeria. Study Design: Investigative Place and Duration of Study: Department of Microbiology, Nasarawa State University, Keffi, between November 2019 and February 2020. Methodology: A total of 90 samples from poultry droppings were collected from selected farms. Escherichia coli was isolated from the samples using standard cultural and microbiological methods. Antibiotic susceptibility testing and minimum inhibitory concentrations were evaluated as described by the Clinical and Laboratory Standards Institute (CLSI). The detection of extended-spectrum beta-lactamase (ESBL) production in E. coli isolates was carried out using double disc synergy test.  In addition, molecular detection of ESBL genes was carried out using Polymerase Chain Reaction (PCR) method. Results: The prevalence of E. coli was 100%. Antibiotic resistances of E. coli were recorded as follows: streptomycin (S: 94.4%), sulphamethoxazole / trimethoprim (SXT: 90.0%), ampicillin (AMP: 88.9%), gentamicin (CN: 68.9%), amoxicillin/clavulanic acid (AMC: 55.6%), ciprofloxacin (CIP: 41.1%), cefoxitin (FOX: 35.6%), ceftazidime (CAZ: 34.4%), cefotaxime (CTX: 22.2%), and imipenems (IPM: 17.8%). The most common antibiotic resistant resistance phenotype was AMP-CTX-CAZ-CIP-CN (11.1%). Multiple antibiotic resistance (MAR) was observed in 97.7% (88/90) of the isolates, with the common MAR index being 0.5 (33.3%). Twenty five of the thirty beta-lactam resistant isolates (83.3%) were confirmed ESBL producers. The 25 ESBL positive isolates carried bla genes as follows: blaTEM (11/25, 44.0%) and blaCTX-M (18/25, 72.0%). blaSHV was not found in any isolate. Conclusion: E. coli isolated from the droppings of selected poultry farms in Nasarawa were less resistant to imipenem, cefotaxime, ceftazidime and cefoxitin in the study location. This implies that the antibiotics are useful in the treatment of infection caused by E. coli. Also, ESBL-positive E. coli isolates harbored ESBL genes, with blaCTX-M as the most common.

scholarly journals Emergence of extended-spectrum beta-lactamases-producing Escherichia coli in community-acquired urinary infections in Casablanca, Morocco

2011 ◽  
Vol 5 (12) ◽  
pp. 850-855 ◽  
Author(s):  
Fatna Bourjilat ◽  
Brahim Bouchrif ◽  
Noureddine Dersi ◽  
Jean David Perrier Gros Claude ◽  
Hamid Amarouch ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Resistance Genes ◽  
Antibiotic Resistance Genes ◽  
Beta Lactamase ◽  
Extended Spectrum Beta Lactamase ◽  
E Coli ◽  
Extended Spectrum ◽  
Urinary Infections ◽  
Genes Encoding ◽  
Tract Infections

Introduction: Extended-spectrum beta-lactamase- (ESBL)-producing Escherichia coli are an increasingly significant cause of community-acquired infection worldwide. The aim of this study was to assess the prevalence of ESBL-producing E. coli in a community, to analyze the relationship between strains studied, and to characterize the ESBL genes involved in this resistance. Methodology: ESBL production was detected by the double disk synergy test. Genes encoding ESBLs (blaTEM, blaCTM, blaSHV) were identified by PCR and DNA sequencing. Conjugation experiments were performed to check the transferability of antibiotic resistance genes. Strain inter-relationships were studied by pulsed field gel electrophoresis. Results: Seven ESBL-producing E. coli were identified among the 535 E. coli isolates. Most of them expressed a CTX-M enzyme (6/7) with a predominance of CTX-M-15 (6/6). Two strains possessed TEM in combination with CTX-M-15 or SHV-5.  Plasmid content and gene transfer analysis showed that resistance genes were carried by high molecular weight conjugative plasmids. PFGE analysis showed that the strains were not clonal. Conclusions: ESBL-producing E. coli from urinary tract infections in Casablanca belong to different clones and carry mobile beta-lactamase genes.  It is therefore essential to monitor the epidemiology of ESBLs in E. coli and related organisms locally to effectively combat resistance.

scholarly journals Multidrug-Resistant, Including Extended-Spectrum Beta Lactamase-Producing and Quinolone-Resistant, Escherichia coli Isolated from Poultry and Domestic Pigs in Dar es Salaam, Tanzania

Antibiotics ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 406
Author(s):  
Zuhura I. Kimera ◽  
Fauster X. Mgaya ◽  
Gerald Misinzo ◽  
Stephen E. Mshana ◽  
Nyambura Moremi ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Multidrug Resistant ◽  
Antibiotics Resistance ◽  
Beta Lactamase ◽  
Domestic Pigs ◽  
Extended Spectrum Beta Lactamase ◽  
Phenotypic Profile ◽  
E Coli ◽  
Extended Spectrum ◽  
Esbl Producers

We determined the phenotypic profile of multidrug-resistant (MDR) Escherichia coli isolated from 698 samples (390 and 308 from poultry and domestic pigs, respectively). In total, 562 Enterobacteria were isolated. About 80.5% of the isolates were E. coli. Occurrence of E. coli was significantly higher among domestic pigs (73.1%) than in poultry (60.5%) (p = 0.000). In both poultry and domestic pigs, E. coli isolates were highly resistant to tetracycline (63.5%), nalidixic acid (53.7%), ampicillin (52.3%), and trimethoprim/sulfamethoxazole (50.9%). About 51.6%, 65.3%, and 53.7% of E. coli were MDR, extended-spectrum beta lactamase-producing enterobacteriaceae (ESBL-PE), and quinolone-resistant, respectively. A total of 68% of the extended-spectrum beta lactamase (ESBL) producers were also resistant to quinolones. For all tested antibiotics, resistance was significantly higher in ESBL-producing and quinolone-resistant isolates than the non-ESBL producers and non-quinolone-resistant E. coli. Eight isolates were resistant to eight classes of antimicrobials. We compared phenotypic with genotypic results of 20 MDR E. coli isolates, ESBL producers, and quinolone-resistant strains and found 80% harbored blaCTX-M, 15% aac(6)-lb-cr, 10% qnrB, and 5% qepA. None harbored TEM, SHV, qnrA, qnrS, qnrC, or qnrD. The observed pattern and level of resistance render this portfolio of antibiotics ineffective for their intended use.

scholarly journals Evaluation of extended spectrum beta lactamase enzymes prevalence in clinical isolates of Escherichia coli

2011 ◽  
Vol 2 (1) ◽  
pp. 8
Author(s):  
Ronak Bakhtiari ◽  
Jalil Fallah Mehrabadi ◽  
Hedroosha Molla Agamirzaei ◽  
Ailar Sabbaghi ◽  
Mohammad Mehdi Soltan Dallal
Keyword(s):  
Escherichia Coli ◽  
Disk Diffusion ◽  
Confirmatory Test ◽  
Diffusion Method ◽  
Multi Drug Resistance ◽  
Beta Lactamase ◽  
Disk Diffusion Method ◽  
Extended Spectrum Beta Lactamase ◽  
E Coli ◽  
Extended Spectrum

Resistance to b-lactam antibiotics by gramnegative bacteria, especially <em>Escherichia coli (E. coli)</em>, is a major public health issue worldwide. The predominant resistance mechanism in gram negative bacteria particularly <em>E. coli </em>is via the production of extended spectrum beta lactamase (ESBLs) enzymes. In recent years, the prevalence of b-lactamase producing organisms is increased and identification of these isolates by using disk diffusion method and no-one else is not satisfactory. So, this investigation focused on evaluating the prevalence of ESBL enzymes by disk diffusion method and confirmatory test (Combined Disk). Five hundred clinical samples were collected and 200 <em>E. coli </em>isolates were detected by standard biochemical tests. To performing initial screening of ESBLs was used from Disk diffusion method on <em>E. coli </em>isolates. A confirmation test (Combined Disk method) was performed on isolates of resistant to cephalosporin's indicators. Up to 70% isolates exhibited the Multi Drug Resistance phenotype. In Disk diffusion method, 128(64%) <em>E. coli </em>isolates which resistant to ceftazidime and cefotaxime while in Combined Disk, among 128 screened isolates, 115 (89.8%) isolates were detected as ESBLs producers. This survey indicate beta lactamase enzymes are playing a significant role in antibiotic resistance and correct detection of them in phenotypic test by using disk diffusion and combined Disk is essential for accurate recognition of ESBLs.

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