scholarly journals Extended Spectrum Beta-Lactamase Production in Uropathogens Isolated from Hospitalized Patients with Chronic Pyelonephritis

2015 ◽  
Vol 8 (1) ◽  
pp. 71-75 ◽  
Author(s):  
Olga I Chub ◽  
Aleksandr V Bilchenko ◽  
Igor Khalin
Keyword(s):  
Cross Sectional Study ◽  
Hospitalized Patients ◽  
Chronic Pyelonephritis ◽  
Diffusion Method ◽  
Beta Lactamase ◽  
Disk Diffusion Method ◽  
Cross Sectional ◽  
Extended Spectrum Beta Lactamase ◽  
Extended Spectrum ◽  
Tract Infections

Background : Increased multidrug resistance of extended-spectrum beta-lactamases (ESBLs) compromises the efficacy of treatment of urinary tract infections. Objective : The objective of this study is to determine the prevalence of ESBL-producing uropathogens from hospitalized patients with chronic pyelonephritis and to identify the presence of genes involved in the resistance. Methods : A cross-sectional study of 105 patients with chronic pyelonephritis, treated in Kharkiv City Clinical Emergency Hospital, Ukraine was carried. Bacterial isolates were collected, antimicrobial susceptibility of isolates was determined by the Kirby Bauer disk diffusion method and screening for the presence of blaSHV, blaTEM, blaCTX-M ESBL genes was performed by polymerase chain reaction. Results : 84 (80%) patients had positive urine cultures. Eschеrichia coli wаs the most common microorganism isolated. Among them, 29 (25.2%) were found to be ESBL producers. Out of 53 E. coli isolates, 10 (18.9%), 4 (7.5%) and 6 (11.3%) were identified to carry bla(TEM), bla(SHV) and bla(CTX-M) beta-lactamase genes, respectively. The highest resistance was observed against ampicillin (75.9%), ciprofloxacin (48.3%), levofloxacin (41.4%) and gentamicin (41.4%). Beside this, only meropenem (96.6% susceptibility), nitroxolinum (86.2%) and fosfomycin (72.4%) exhibited a good enough activity against ESBLs-producing urinary strains. Conclusion : Isоlation and detеction of ESBL-prоducing strаins are еssential fоr the sеlection оf the mоst effеctive antibiоtic for the empiric trеatment.

scholarly journals Frequency of extended spectrum beta lactamase in E.CoIi and klebsiella pneumoniae in bacterial cultures.

2021 ◽  
Vol 28 (09) ◽  
pp. 1288-1291
Author(s):  
Saeeda Nabat ul Hassan ◽  
Ghulam Asghar Bhutta ◽  
Khushbu Farva
Keyword(s):  
Klebsiella Pneumoniae ◽  
Generation Cephalosporin ◽  
Cross Sectional Study ◽  
Diffusion Method ◽  
P Value ◽  
Beta Lactamase ◽  
Cross Sectional ◽  
Extended Spectrum Beta Lactamase ◽  
Bacterial Cultures ◽  
Extended Spectrum

Objective: To determine frequency and pattern of extended spectrum beta lactamase in Klebsiella pneumoniae and E. coli in bacterial cultures. Study Design: Cross Sectional study. Setting: Department of Pathology Sahara Medical College Narowal. Period: January to June 2020. Material & Methods: Total 1100 bacterial isolates were studied out of them 655 E.coli and 445 of klebsiella pneumoniae. All samples were subjected to double disc diffusion method using third generation cephalosporin and amoxacillin-clavulanic acid for detection of ESBL. Data was analyzed using SPSS software version 24, and results were calculated in the form of frequency, percentage and standard deviation. P-value ≤0.05 was taken as statistically non-significant. Results: There were 48.9% male and 51.1% female subjects out of 1100 total cases. E.coli was detected in 59.5% and klebsiella in 40.5% samples. Total 44.2% samples were positive for ESBL enzyme. Of 655 E.coli samples 40.8% and of 445 Klebsiella pneumoniae samples 49.2% were positive for ESBL enzyme. Conclusion: It is necessary to detect ESBL positive Klebsiella pneumoniae and E.coli in laboratory workflow to avoid unnecessary use of antibiotics and development of resistance against them.

scholarly journals Extended Spectrum Beta-lactamase Producing Gram Negative Bacterial Isolates from Urine of Patients Visiting Everest Hospital, Kathmandu, Nepal

2019 ◽  
Vol 6 ◽  
pp. 26-31 ◽  
Author(s):  
Nisha Guragain ◽  
Aashish Pradhan ◽  
Binod Dhungel ◽  
Megha Raj Banjara ◽  
Komal Raj Rijal ◽  
...  
Keyword(s):  
Bacterial Species ◽  
Cross Sectional Study ◽  
Urine Samples ◽  
Diffusion Method ◽  
Beta Lactamase ◽  
Bacterial Isolates ◽  
Cross Sectional ◽  
Gram Negative ◽  
Extended Spectrum Beta Lactamase ◽  
Extended Spectrum

Objectives: The study was aimed to determine the prevalence of Extended Spectrum Beta Lactamase (ESBL) producing Gram negative pathogens from urine samples along with their antimicrobial resistance. Methods: This cross-sectional study was conducted from December 2015 to May 2016 at Everest Hospital, Kathmandu. Mid-stream urine samples were collected and processed for culture by standard loop streak method. Identified bacterial isolates were tested for Antibiotic Susceptibility by modified Kirby Bauer disc diffusion method and, were subjected to ESBL screening by using 30µg cefotaxime and ceftazidime. ESBL production was confirmed by combination disc method. Results: Of the three hundred urine samples, 22.7% (67/300) showed significant growth. Four different bacterial species were identified. Among the isolates, E. coli was the most common pathogen (71.64%) followed by Klebsiella pneumoniae (14.92%), Pseudomonas spp (8.95%) and Acinetobacter spp (4.48%). Altogether 92.54% (n=62) isolates were sensitive to gentamicin, 89.55% (n=60) to amikacin, and 79.10% (n=53) to nitrofurantoin. 70.10% (n=47) isolates were resistant to antibiotic ampicillin while 62.68% (n=42) were found as Multi-Drug Resistant (MDR) and 29.8% (n=20) were ESBL producers. Conclusions: The overall prevalence of MDR and ESBL among uropathogens is low in comparison to other studies though it is essential to have a regular monitoring of ESBL producing clinical isolates in laboratory practice.

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.

scholarly journals Urinary tract infections and antibiotic susceptibility among the patients attending B & D hospital of Lalitpur, Nepal

2016 ◽  
Vol 7 (5) ◽  
pp. 47-51 ◽  
Author(s):  
Yadav Prasad Joshi ◽  
Shreejeet Shrestha ◽  
Russell Kabir ◽  
Anita Thapa ◽  
Parbati Upreti ◽  
...  
Keyword(s):  
Urinary Tract ◽  
Tract Infection ◽  
Antibiotic Susceptibility ◽  
Bacterial Infections ◽  
Antimicrobial Agents ◽  
Cross Sectional Study ◽  
Diffusion Method ◽  
Disk Diffusion Method ◽  
Cross Sectional ◽  
Tract Infections

Background:Urinary tract infection is the most common bacterial infections in humans and serious health problem in many parts of the world. It has become more complicated in treatment due to different pathogens and increasing resistant to antimicrobial agents. This study aims to investigate the prevalence of urinary tract infection and antibiotic susceptibility patterns of pathogens among the patients attending in B & B hospital Nepal.Materials and Methods:A hospital based cross sectional study was conducted in between April 2010 to March 2011. Urine samples were collected from clinically suspected patients and tested bacteriologically using standard procedures. Antimicrobial susceptibility test was performed for isolated pathogen using the Kirby-Bauer disk diffusion method according to Clinical and Laboratory Standards Institute guidelines.Results:Out of 1260 examined specimens 25.24 % were positive and majority 61.64% were females.  The most common pathogens isolated were Escherichia coli (66.67%), Enterococcus (7.55%) and Staphylococcus (6.60 %). The drug resistant among the positive cases were reported. The highest resistant of positive cases was found with Cefexime (87.88%) and Enterococcus with Ampicillin (66.67%) and Staphyllococcus with Cloxacillin (66.67%). The highest susceptibility was for Vancomycin and Ampicillin i.e. 33.33% in each.Conclusion:The findings showed that E. coli isolates were the predominant pathogen and the presence of bacterial isolates with very high resistance to the commonly prescribed drugs. As drug resistance among bacterial pathogens is an evolving process and serious issue. Therefore, routine surveillance and monitoring studies should be conducted to provide physicians knowledge on the updated and most effective empirical treatment of UTIs. Asian Journal of Medical Sciences Vol.7(5) 2016 47-51

scholarly journals Presence of different beta-lactamase classes among clinical isolates of Pseudomonas aeruginosa expressing AmpC beta-lactamase enzyme

2010 ◽  
Vol 4 (04) ◽  
pp. 239-242 ◽  
Author(s):  
Supriya Upadhyay ◽  
Malay Ranjan Sen ◽  
Amitabha Bhattacharjee
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Treatment Options ◽  
Clinical Isolates ◽  
Diffusion Method ◽  
Beta Lactamase ◽  
Beta Lactam ◽  
Disk Diffusion Method ◽  
Extended Spectrum Beta Lactamase ◽  
Extended Spectrum ◽  
Enzyme Detection

Introduction: Infections caused by Pseudomonas aeruginosa are difficult to treat as the majority of isolates exhibit varying degrees of beta-lactamase mediated resistance to most of the beta-lactam antibiotics. It is also not unusual to find a single isolate that expresses multiple β-lactamase enzymes, further complicating the treatment options. Thus the present study was designed to investigate the coexistence of different beta-lactamase enzymes in clinical isolates of P. aeruginosa. Methodology: A total of 202 clinical isolates of P. aeruginosa were tested for the presence of AmpC beta-lactamase, extended spectrum beta-lactamase (ESBL) and metallo beta-lactamase (MBL) enzyme. Detection of AmpC beta-lactamase was performed by disk antagonism test and a modified three-dimensional method, whereas detection of ESBL was done by the combined disk diffusion method per Clinical and Laboratory Standards Institute (CLSI) guidelines and MBL were detected by the Imipenem EDTA disk potentiation test. Results: A total of 120 (59.4%) isolates were confirmed to be positive for AmpC beta-lactamase. Among them, 14 strains (7%) were inducible AmpC producers. Co-production of AmpC along with extended spectrum beta-lactamase and metallo beta-lactamase was reported in 3.3% and 46.6% isolates respectively. Conclusion: The study emphasizes the high prevalence of multidrug resistant P. aeruginosa producing beta-lactamase enzymes of diverse mechanisms. Thus proper antibiotic policy and measures to restrict the indiscriminative use of cephalosporins and carbapenems should be taken to minimize the emergence of this multiple beta-lactamase producing pathogens.

scholarly journals Prevalence of Extended Spectrum Beta Lactamase Producing and Carbapenems Resistance Isolates from Hands of Health Care Workers in a Health Care Setting of Nepal

2020 ◽  
Vol 13 (1) ◽  
pp. 23-31
Author(s):  
Binita Koirala Sharma
Keyword(s):  
Health Care ◽  
Antibiotic Susceptibility ◽  
Cross Sectional Study ◽  
Control Measures ◽  
Resistant Bacteria ◽  
Beta Lactamase ◽  
Cross Sectional ◽  
Healthcare Facilities ◽  
Extended Spectrum Beta Lactamase ◽  
Extended Spectrum

Background: Hands of healthcare workers (HCWs) could be colonized by potential drug resistant bacteria like Extended Spectrum Beta Lactamase producers (ESBLs) and Carbapenems-resistant (CR) isolates and could become vectors of nosocomial pathogens in healthcare facilities that are associated with an increase of morbidity, mortality and healthcare costs. This study aimed to investigate the prevalence of ESBLs and CR isolates from hands of HCWs with their antibiotic susceptibility pattern. Materials and methods: This was a cross-sectional study that included a total of 150 hand swabs collected from March, 2018 to September, 2018 in Gandaki Medical College and Teaching Hospital. Isolation, identification and antimicrobial susceptibility tests were done using standard microbiological procedures. Results: Among the total isolates of 219 obtained from growth positive samples 92/219(42.01%) were Gram negative bacteria (GNB) and the most common were Klebsiella spp 32(34.78%) followed by Escherichia coli 17(18.48%), Pseudomonas aeruginosa12 (13.04%), Acenetobacter spp 11(11.96%), Proteus spp 9(9.78%), Citrobacter spp 7(7.61%) and Enterobacter spp 4(4.35%). The prevalence of ESBLs, CR and ESBLs with Co-resistant to Carbapenems were 19.56%,14.13% and 9.78%, respectively. The most effective drugs for isolates were Nitrofurantoin followed by Amikacin, Tetracycline and Gentamycin. Distribution pattern of the ESBLs and CR isolates among doctors, nurses, laboratory technicians, helpers and basic science faculties were not significant (p>0.05). Conclusions: This report revealed the emerging and moderately high prevalence of ESBLs, CR and ESBLs with Co-resistant to Carbapenems GNB with their antibiotic susceptibility patterns found on hands of HCWs in Nepal. Thus, this study could be helpful in developing proper guidelines on hand hygiene and implementation of infection control measures including contact precautions against the spread of infections by such pathogens in healthcare settings.  

scholarly journals Faecal carriage of extended-spectrum beta-lactamase-producing Enterobacteriaceae in healthy volunteers and hospitalized patients in Ouagadougou, Burkina Faso: prevalence, resistance profile, and associated risk factors

2021 ◽  
Vol 22 (2) ◽  
pp. 157-163
Author(s):  
S. Soré ◽  
S. Sanou ◽  
Y. Sawadogo ◽  
S. Béogo ◽  
S.N.P. Dakouo ◽  
...  
Keyword(s):  
Risk Factors ◽  
Burkina Faso ◽  
Healthy Volunteers ◽  
Hospitalized Patients ◽  
Diffusion Method ◽  
Beta Lactamase ◽  
Extended Spectrum Beta Lactamase ◽  
Extended Spectrum ◽  
Faecal Carriage ◽  
Associated Risk Factors

Background: Extended spectrum beta-lactamase-producing Enterobacteriaceae (ESBL-PE) are a serious challenge to patients’ treatment. The aim of this study is to determine the prevalence of ESBL-PE, investigate the associated resistance, and analyze the associated risk factors for acquisition of ESBL-PE.Methodology: A cross-sectional study was conducted on healthy volunteers and inpatients. After obtaining informed consent, rectal swabs were collected from each participant for isolation of Enterobacteriaceae on Hektoen enteric agar containing 4µg/L cefotaxime. The Enterobacteriaceae isolates were identified using biochemical tests and ESBL production was confirmed by the double-disc synergy test of amoxicillin and clavulanic acid. Antibiotic susceptibility test of each isolate was done by the disc diffusion method and interpreted using the recommendations of the European Committee on Antimicrobial Susceptibility Testing (EUCAST) clinical  breakpoints version 5.0.Results: During the study period, prevalence of faecal ESBL-PE among the study participants was 54.5% (103/189); 53.5% among healthy volunteers and 55.7% among inpatients (p=0.87). The major ESBL-PE isolates was Escherichia coli (71%) followed by Klebsiella pneumoniae (16%). The isolates in hospitalized patients were resistant to norfloxacin (84.2%), cotrimoxazole (89.5%), and gentamicin (7.0%). The isolates from healthy volunteers were resistant to norfloxacin (86.2%), cotrimoxazole (82.8%), and gentamicin (1.7%).Gender, age, and previous antibiotic use were not significantly associated with carriage of ESBL-PE (p=0.51).Conclusion: The high prevalence of ESBL-PE in this study is worrying. There is an urgent need to develop measures to monitor and limit the spread of these multidrug-resistant organisms in healthcare facilities and the community in Burkina Faso. Keywords: faecal carriage, ESBL-PE, healthy volunteers, inpatients, Burkina Faso

scholarly journals First Global Report of Plasmid-Mediated mcr-1 and Extended-Spectrum Beta-Lactamase-Producing Escherichia coli from Sheep in Portugal

Antibiotics ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1403
Author(s):  
Josman Dantas Palmeira ◽  
Marisa Haenni ◽  
Jean-Yves Madec ◽  
Helena Maria Neto Ferreira
Keyword(s):  
One Health ◽  
Diffusion Method ◽  
Beta Lactamase ◽  
Beta Lactam ◽  
Colistin Resistance ◽  
Disk Diffusion Method ◽  
Extended Spectrum Beta Lactamase ◽  
E Coli ◽  
Beta Lactam Antibiotics ◽  
Extended Spectrum

Resistances to extended-spectrum cephalosporins (ESC) and colistin are One Health issues since genes encoding these resistances can be transmitted between all sectors of the One Health concept, i.e., human, animal, and the environment. Among food-producing animals, sheep farming has long been overlooked. To fill in this knowledge gap, we looked for ESC- and colistin resistance in 21 faecal samples collected from sheep in one farm in the south of Portugal. ESC-resistant isolates were selected on MacConkey agar plates supplemented with cefotaxime. Susceptibility testing was performed by the disk-diffusion method according to CLSI, while colistin MIC was determined by broth microdilution. ESC- and colistin-resistance genes were identified by PCR, and the clonality of all isolates was assessed by XbaI-PFGE. The replicon content was determined by PCR according to the PCR-based replicon typing (PBRT) scheme. Sixty-two non-duplicate ESC-resistant E. coli isolates were identified, which all presented an extended-spectrum beta-lactamase (ESBL) phenotype, mostly due to the presence of CTX-M genes. One CTX-M-1-producing E. coli was concomitantly colistin-resistant and presented the plasmid-mediated mcr-1 gene. Nearly all isolates showed associated resistances to non-beta-lactam antibiotics, which could act as co-selectors, even in the absence of beta-lactam use. The results showed a high proportion of ESBL-producing E. coli in sheep faeces. Their dissemination was very dynamic, with the spread of successful clones between animals, but also a large diversity of clones and plasmids, sometimes residing in the same animal. This study highlights the need for global surveillance in all food-producing sectors, in order to avoid the dissemination of genes conferring resistance to last-resort antibiotics in human medicine.

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