scholarly journals Changes of urine isolates of Escherichia coli and Klebsiella pneumoniae biofilm affect monocytes’ response

2021 ◽  
Vol 37 (11) ◽  
Author(s):  
Agnieszka Daca ◽  
Justyna Gołębiewska ◽  
Marek Bronk ◽  
Tomasz Jarzembowski
Keyword(s):  
Escherichia Coli ◽  
Urinary Tract ◽  
Kidney Disease ◽  
Klebsiella Pneumoniae ◽  
Inflammatory Reaction ◽  
Immunosuppressive Agents ◽  
Immunosuppressive Drugs ◽  
Bacterial Biofilm ◽  
Gram Negative ◽  
Tract Infections

AbstractThe Gram negative rods as Escherichia coli and Klebsiella pneumoniae belong to the most common etiology agents of urinary tract infections. The aim of our study was to assess the diversity of biofilm formed in different urinary tract diseases and their impact on monocytes’ adherence and activation. The bacteria were obtained from patients with different kidney problems. Some of the patients were after renal transplantation, some of them were not. Changes in the size and granularity of monocytes, as well as their adherence to biofilm, were assessed using FACSVerse flow cytometer after 1 h co-incubation of monocytes and bacterial biofilm in 37 °C. The obtained results were validated against monocytes incubated without bacteria. The isolates from patients with chronic kidney disease formed the most adherent biofilm regardless the presence or absence of inflammatory reaction. Adherence of monocytes also increased during therapy with immunosuppressive agents, but monocytes’ response was different when cyclosporine or tacrolimus were used. Additionally the presence of inflammatory reaction in patients with kidney disease modified the monocytes response when the immunosuppressive drugs were used. Considering the obtained results, we conclude that the changes of monocytes’ morphology in response to biofilm formed by Gram negative rods could become a tool to detect urinary tract infection, especially in those groups of patients, where the knowledge of ongoing inflammation is important and the standard tools fail to detect it.

scholarly journals Isolation of Extended-Spectrum β-lactamase- (ESBL-) Producing Escherichia coli and Klebsiella pneumoniae from Patients with Community-Onset Urinary Tract Infections in Jimma University Specialized Hospital, Southwest Ethiopia

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Mengistu Abayneh ◽  
Getnet Tesfaw ◽  
Alemseged Abdissa
Keyword(s):  
Escherichia Coli ◽  
Urinary Tract ◽  
Klebsiella Pneumoniae ◽  
Clavulanic Acid ◽  
Urinary Tract Infections ◽  
Southwest Ethiopia ◽  
Extended Spectrum ◽  
Specialized Hospital ◽  
Amoxicillin Clavulanic Acid ◽  
Tract Infections

Background. Klebsiella pneumoniae and Escherichia coli are the major extended-spectrum β-lactamase- (ESBL-) producing organisms increasingly isolated as causes of complicated urinary tract infections and remain an important cause of failure of therapy with cephalosporins and have serious infection control consequence. Objective. To assess the prevalence and antibiotics resistance patterns of ESBL-producing Escherichia coli and Klebsiella pneumoniae from community-onset urinary tract infections in Jimma University Specialized hospital, Southwest Ethiopia, 2016. Methodology. A hospital-based cross-sectional study was conducted, and a total of 342 urine samples were cultured on MacConkey agar for the detection of etiologic agents. Double-disk synergy (DDS) methods were used for detection of ESBL-producing strains. A disc of amoxicillin + clavulanic acid (20/10 µg) was placed in the center of the Mueller–Hinton agar plate, and cefotaxime (30 µg) and ceftazidime (30 µg) were placed at a distance of 20 mm (center to center) from the amoxicillin + clavulanic acid disc. Enhanced inhibition zone of any of the cephalosporin discs on the side facing amoxicillin + clavulanic acid was considered as ESBL producer. Results. In the current study, ESBL-producing phenotypes were detected in 23% (n = 17) of urinary isolates, of which Escherichia coli accounts for 76.5% (n = 13) and K. pneumoniae for 23.5% (n = 4). ESBL-producing phenotypes showed high resistance to cefotaxime (100%), ceftriaxone (100%), and ceftazidime (70.6%), while both ESBL-producing and non-ESBL-producing isolates showed low resistance to amikacin (9.5%), and no resistance was seen with imipenem. In the risk factors analysis, previous antibiotic use more than two cycles in the previous year (odds ratio (OR), 6.238; 95% confidence interval (CI), 1.257–30.957; p = 0.025) and recurrent UTI more than two cycles in the last 6 months or more than three cycles in the last year (OR, 7.356; 95% CI, 1.429–37.867; p = 0.017) were found to be significantly associated with the ESBL-producing groups. Conclusion. Extended-spectrum β-lactamases- (ESBL-)producing strain was detected in urinary tract isolates. The occurrence of multidrug resistance to the third-generation cephalosporins, aminoglycosides, fluoroquinolones, trimethoprim-sulfamethoxazole, and tetracyclines is more common among ESBL producers. Thus, detecting and reporting of ESBL-producing organisms have paramount importance in the clinical decision-making.

scholarly journals Prevalence and antibiotic susceptibility pattern of pathogens from urinary tract infections (UTI) in a private diagnostic laboratory in Bangladesh

2020 ◽  
Vol 6 (3) ◽  
pp. 564-569
Author(s):  
Md Habibur Rahman ◽  
Mushtaque Ahmed ◽  
Dayanidhi Sarkar ◽  
Md Asadur Rahman
Keyword(s):  
Escherichia Coli ◽  
Urinary Tract ◽  
Antibiotic Susceptibility ◽  
Antimicrobial Agents ◽  
Urine Samples ◽  
Gram Positive ◽  
Diagnostic Laboratory ◽  
Gram Negative ◽  
Antibiotic Susceptibility Test ◽  
Tract Infections

Urinary tract infection (UTI) is one of the commonest infections encountered by clinicians and despite the widespread availability of antimicrobial agents UTI has become difficult to treat because of appearance pathogens with increasing resistance to antimicrobial agents. The aim and objectives of this study were to determine the pathogens causing UTI and to determine the antibiotic sensitivity status among these isolates in a diagnostic laboratory in Dhaka city. A laboratory based cross sectional survey was conducted in Popular Diagnostic Centre Ltd. Dhanmondi, Dhaka-1205, Bangladesh from July 2016 to December 2016. A total of 553 freshly voided midstream urine samples (10-20 ml) were collected in a wide mouth sterile container from patients and processed in microbiology laboratory to isolate pathogens and antibiotic susceptibility test using standard procedure. Among 553 urine sample, the culture positivity in urine samples was found to be 158 (28.57%) of which 39 (24.70%) were isolated from male patients and 119 (75.30%) from female patients. Escherichia coli (43.67%) were found to be the predominant pathogen followed by Staphylococcus spp. (16.45%), Enterococcus spp. (13.39%), Klebsiella spp. (13.29%), Candida spp. (5.70%), Acinetobacter spp. (4.43%), Psudomonas spp. (3.80%) and Proteus spp. (1.27%). Carbapenem group (Imipenem, Meropenem) were the most effective antibiotic with resistance between 0 and 5.1% of the gram negative isolates and Linezolid and Vancomycin was most effective in gram positive isolates. Nitrofurantoin was most effective both gram negative and gram positive isolates. This study finding showed That Escherichia. coli isolates were the predominant pathogens and showed increasing pattern to the commonly prescribed drugs in private practice that in turn leaves the clinicians with very few alternative options in drug for the treatment of UTIs. Asian J. Med. Biol. Res. September 2020, 6(3): 564-569

Chlorpromazine-impregnated catheters as a potential strategy to control biofilm-associated urinary tract infections

2019 ◽  
Vol 14 (12) ◽  
pp. 1023-1034 ◽  
Author(s):  
José JC Sidrim ◽  
Bruno R Amando ◽  
Francisco IF Gomes ◽  
Marilia SMG do Amaral ◽  
Paulo CP de Sousa ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Urinary Tract ◽  
Klebsiella Pneumoniae ◽  
Urinary Tract Infections ◽  
Proteus Mirabilis ◽  
Biofilm Formation ◽  
Antibiofilm Activity ◽  
Potential Strategy ◽  
Tract Infections

Aim: This study proposes the impregnation of Foley catheters with chlorpromazine (CPZ) to control biofilm formation by Escherichia coli, Proteus mirabilis and Klebsiella pneumoniae. Materials & methods: The minimum inhibitory concentrations (MICs) for CPZ and the effect of CPZ on biofilm formation were assessed. Afterward, biofilm formation and the effect of ciprofloxacin and meropenem (at MIC) on mature biofilms grown on CPZ-impregnated catheters were evaluated. Results: CPZ MIC range was 39.06–625 mg/l. CPZ significantly reduced (p < 0.05) biofilm formation in vitro and on impregnated catheters. In addition, CPZ-impregnation potentiated the antibiofilm activity of ciprofloxacin and meropenem. Conclusion: These findings bring perspectives for the use of CPZ as an adjuvant for preventing and treating catheter-associated urinary tract infections.

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