Recurrence of urinary tract infections with ESBL–producing Escherichia coli are caused by homologous strains among which clone ST131–O25b is dominant

ConclusionsIn ESBL-E. coli RUTI, most recurrences were caused by the initial infecting strain. The high frequency of the multidrug-resistant fimH30Rx subclone and its association with multiple recurrences warrants further attention and early detection of this subclone in patients at risk of developing RUTI with ESBL-producing E. coli.
Source: Journal of Global Antimicrobial Resistance - Category: Infectious Diseases Source Type: research

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This study determines the antimicrobial resistance profiles, multidrug resistance profiles, multiple antibiotic resistance indices (MARI), factors associated with MDR UTIs and ...
Source: African Journal of Microbiology Research - Category: Microbiology Source Type: research
In this study, we aimed to identify the beta-lactam resistance phenotypes and genotypes of multidrug-resistant (MDR) non-repetitive GNP from 3 tertiary hospitals in Egypt. WZe studied 495 non-repetitive MDR Gram-negative isolates from patients with complicated intra-abdominal infections (cIAI), complicated urinary tract infection (cUTI), and lower respiratory tract infection (LRTI), collected as part of the “Study for Monitoring Antimicrobial Resistance Trends” (SMART) conducted in 3 tertiary hospitals in Cairo, Egypt, from 2015 to 2016. Identification and susceptibility testing of GNP to antimicrobials were te...
Source: European Journal of Clinical Microbiology and Infectious Diseases - Category: Microbiology Source Type: research
We investigated antimicrobial resistance trends and characteristics of ESBL-producing Escherichia coli isolates from pets and whether this correlates with antibiotic usage in the clinic. Clinical samples containing E. coli from diseased cats and dogs were screened for antibiotic sensitivity and associated genotypic features. We identified 127 E. coli isolates from 1886 samples from dogs (n = 1565) and cats (n = 321) with the majority from urinary tract infections (n = 108, 85%). High rates of resistance were observed for β-lactams and fluoroquinolones and resistance to> 3 antibiotic classes (MDR) increased from 67%...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
In this study, we collected 326 samples from cases with UTIs or other urinary system diseases at the China Agricultural University Veterinary Teaching Hospital, Beijing, from 2016–2018. In total, 129 non-duplicate bacterial isolates were recovered from 103 clinical samples. The proportion of positive female samples was higher than that of males. The predominant Gram-negative bacteria were Escherichia coli and Klebsiella spp., while Staphylococcus spp. were the predominant Gram-positive bacteria. Broth microdilution-based antimicrobial susceptibility testing showed that 39% of E. coli and 51.5% of Staphylococcus spp. ...
Source: Veterinary Microbiology - Category: Veterinary Research Source Type: research
Authors: Bader MS, Loeb M, Leto D, Brooks AA Abstract Urinary tract infections (UTIs) caused by antibiotic- resistant Gram-negative bacteria are a growing concern due to limited treatment options. Knowledge of the common uropathogens in addition to local susceptibility patterns is essential in determining appropriate empiric antibiotic therapy of UTIs. The recommended first-line empiric antibiotic therapy for acute uncomplicated bacterial cystitis in otherwise healthy adult nonpregnant females is a 5-day course of nitrofurantion, a 3-g single dose of fosfomycin tromethamine, or a 5-day course of pevmecillinam. High...
Source: Postgraduate Medicine - Category: Internal Medicine Tags: Postgrad Med Source Type: research
ConclusionIt is concluded that NIT resistance in the studied NIT-RE. coli isolates was mainly mediated by nfsA and nfsB alterations.
Source: Journal of Global Antimicrobial Resistance - Category: Infectious Diseases Source Type: research
ConclusionsThe effectiveness of COL alone in vitro and in vivo suggested that intravenous CMS will be an effective and available therapeutic strategy for UTI due to MDR gram-negative pathogens. In-depth in vitro tests demonstrated that COL combined with DOR could be an attractive option, especially when COL MIC of the pathogen is ≥ 1 μg/ml.
Source: Journal of Global Antimicrobial Resistance - Category: Infectious Diseases Source Type: research
Conclusions: The genotyping allowed identifying the serogroup in many of the strains that could not be typed by traditional serology. The strains carried virulence genes and were multidrug-resistant in both, commensal and virulent phylogroups. Our findings revealed that, in addition to the classical UPEC serogroups, there are pathogenic serogroups not reported yet.
Source: The Journal of Infection in Developing Countries - Category: Infectious Diseases Source Type: research
Conclusion: New carbapenem/βLI combinations may be viable alternatives to antimicrobial combination therapy as they displayed high efficacy in vitro and in vivo. Meropenem/Avibactam and Meropenem/Relebactam should be tested on larger sample sizes with different carbapenemases before progressing further in its preclinical development. Introduction Carbapenem resistant Gram-negative bacteria have been gradually increasing in prevalence in recent years. In the United States, the latest CDC Antibiotic Resistance Threat Report indicates that Carbapenem-Resistant Enterobacteriaceae (CREs) are responsible for 9,000 a...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
In conclusion, we unraveled a mechanism of immune evasion of Kpn KPC ST258, which may contribute to design more effective strategies for the treatment of these multi-resistant bacterial infections. Introduction Klebsiella pneumoniae (Kpn) is a Gram-negative pathogen causing a wide range of infections from urinary tract infections to pneumonia. Kpn is a member of the so-called ESKAPE group of microorganisms, a term that emphasizes the fact that they effectively “escape” the effects of antibacterial drugs (1). Antimicrobial resistance is a significant problem for the treatment of infectious diseases caused ...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
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