Bacterial epidemiology and antibiotic resistance rates in male urinary tract infections in France, 2019-2023.

Aim: The aim of this study was to describe the bacterial epidemiology and antibiotic resistance rates of bacterial isolates collected from urine specimens in male patients with suspected urinary tract infection (UTI).

Methods: This retrospective multicenter study included routine data from midstream urine cultures of adult male patients with suspected UTI admitted to the emergency departments of 15 hospitals from 2019 to 2023. Urinalysis was performed according to the recommendations of the French Society for Microbiology and bacterial identification was carried out using MALDI-TOF mass spectrometry.

subsp. and as emerging human uropathogens in elderly patients.

has been considered a very rare cause of human urinary tract infections (UTIs). However, little is known about its clinical significance and antimicrobial susceptibility, and genomic data from clinical isolates are lacking. This study aimed at analyzing clinical, microbiological, and genomic data of urinary isolates.

Impact of an antimicrobial stewardship program on the appropriate use of carbapenems in a French university hospital (CARBACAI study).

Objectives: To study compliance with national guidelines for carbapenem (CP) use.

Patients And Methods: We performed a two-year prospective monocentric and interventional study in a French university hospital. The study was based on three phases (observation (P1), intervention (P2), and post-intervention (P3)) and ended 10 months after intervention.

Outcomes of infective endocarditis according to MIC of amoxicillin: a multicentric study.

Background: The incidence of infective endocarditis is increasing over time. Data on the impact of minimum inhibitory concentration (MIC) of amoxicillin on treatment outcomes are scarce. The objective of this study was to describe the epidemiology of infective endocarditis and to evaluate whether the MIC of amoxicillin might influence mortality.

Interest in the combination of antimicrobial therapy for orthopaedic device-related infections due to Enterococcus spp.

Introduction: The objective of this study was to evaluate the management of orthopaedic device-related infections (ODRIs) due to Enterococcus spp.

Materials And Methods: We performed a retrospective cohort study in a French tertiary university hospital. Patients with prosthetic joint- or osteosynthesis-associated infections caused by enterococci from 2013 to 2020 were included.

Evaluation of ceftolozane-tazobactam susceptibility on a French nationwide collection of Enterobacterales.

Objectives: Ceftolozane-tazobactam (C/T) proved its efficacy for the treatment of infections caused by non-carbapenemase producing Pseudomonas aeruginosa and Enterobacterales. Here, we aimed to provide susceptibility data on a large series of Enterobacterales since the revision of EUCAST categorization breakpoints in 2020.

Methods: First, C/T susceptibility was determined on characterized Enterobacterales resistant to third generation cephalosporins (3GCs) (extended spectrum β-lactamase [ESBL] production or different levels of AmpC overexpression) (n = 213) and carbapenem-resistant Enterobacterales (CRE) (n = 259), including 170 carbapenemase producers (CPE).

Improvement of patient care through hirudotherapy and the management of leeches from their reception to their disposal in France.

Objective: Medicinal leech therapy - known as hirudotherapy (HT) - is an empirical medical technique that has become popular again in reconstructive surgery. However, at each step of leech management there are risks for blood contamination of the caregivers and severe infections for patients. This reduces the success of the treatment.

Capnocytophaga zoonotic infections: a 10-year retrospective study (the French CANCAN study).

Zoonotic species of Capnocytophaga genus belong to the oral microbiota of dogs and cats. They may be responsible for serious human infections, mainly after animal bites, with a high mortality rate. In France, only few cases have been reported and no multicenter study has been conducted.

Unexpected Cell Wall Alteration-Mediated Bactericidal Activity of the Antifungal Caspofungin against Vancomycin-Resistant Enterococcus faecium.

has become a major opportunistic pathogen with the emergence of vancomycin-resistant enterococci (VRE). As part of the gut microbiota, they have to cope with numerous stresses, including effects of antibiotics and other xenobiotics, especially in patients hospitalized in intensive care units (ICUs) who receive many medications. The aim of this study was to investigate the impact of the most frequently prescribed xenobiotics for ICU patients on fitness, pathogenicity, and antimicrobial resistance of the -positive Aus0004 reference strain.

Landscape of Fitness-Associated Genes of Complex.

Species of the complex (ECC) represent an increasing cause of hospital-acquired infections and commonly exhibit multiple antibiotic resistances. In order to identify genes that may play a role in its ability to colonize the host, we used the transposon-sequencing (Tn-seq) approach. To this end, a high-density random transposon insertion library was obtained from subsp.

Paradoxical High-Level Spiramycin Resistance and Erythromycin Susceptibility due to 23S rRNA Mutation in .

The aim of the study was to characterize phenotypically and genotypically an uncommon mechanism of resistance to macrolides, lincosamides, and streptogramins (MLS) in a group clinical isolate. The isolate UCN96 was recovered from an osteoradionecrosis wound, and was identified using the matrix assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometry and the partial sequencing of the A gene. Antimicrobial susceptibility testing were carried out by the disk diffusion method and minimal inhibitory concentrations (MICs) were determined by the broth microdilution technique.

Activity of Ceftolozane-Tazobactam against Enterobacter cloacae Complex Clinical Isolates with Different β-Lactam Resistance Phenotypes.

The study evaluated the activity of ceftolozane-tazobactam (C/T) against 94 unique clinical isolates of complex (ECC). No difference was observed according to the ECC cluster. The activity greatly varied depending on the β-lactamase-producing profile: 100%, 67%, and 19% of wild-type, extended-spectrum β-lactamase (ESBL)-producing, and AmpC-overproducing strains, respectively, were susceptible to C/T.

In vitro activity of novel anti-MRSA cephalosporins and comparator antimicrobial agents against staphylococci involved in prosthetic joint infections.

Objectives: Ceftaroline and ceftobiprole are new parenteral cephalosporins with potent activity against methicillin-resistant (MR) staphylococci, which are the leading cause of prosthetic joint infections (PJIs). The aim of this study was to determine and compare the in vitro activities of both molecules against staphylococcal isolates recovered from clinically documented PJIs.

Methods: A collection of 200 non-duplicate clinical isolates [100 Staphylococcus aureus and 100 coagulase-negative staphylococci (CoNS), including 19 and 27 MR isolates, respectively] was studied.

Genetic characterization of a VanG-type vancomycin-resistant Enterococcus faecium clinical isolate.

Objectives: To characterize, phenotypically and genotypically, the first Enterococcus faecium clinical isolate harbouring a vanG operon.

Methods: The antibiotic resistance profile of E. faecium 16-346 was determined and its whole genome sequenced using PacBio technology.

Enterococcus hirae and Barnesiella intestinihominis Facilitate Cyclophosphamide-Induced Therapeutic Immunomodulatory Effects.

The efficacy of the anti-cancer immunomodulatory agent cyclophosphamide (CTX) relies on intestinal bacteria. How and which relevant bacterial species are involved in tumor immunosurveillance, and their mechanism of action are unclear. Here, we identified two bacterial species, Enterococcus hirae and Barnesiella intestinihominis that are involved during CTX therapy.

Novel chromosome-encoded erm(47) determinant responsible for constitutive MLSB resistance in Helcococcus kunzii.

Objectives: The aim of the study was to identify the determinant responsible for erythromycin resistance in Helcococcus kunzii clinical isolate UCN99 and to characterize the genetic support and environment of this novel gene.

Methods: MICs were determined using the broth microdilution method according to EUCAST guidelines. The entire genome sequence of H.

Cluster-dependent colistin hetero-resistance in Enterobacter cloacae complex.

Objectives: Aims of this study were to: (i) evaluate whether the cluster membership could have an impact on hetero-resistance phenotype to colistin in the Enterobacter cloacae complex (ECC); and (ii) determine the genetic mechanism of colistin hetero-resistance in ECC.

Methods: A collection of 124 clinical isolates belonging to 13 clusters were used to analyse the hetero-resistance phenotype (MICs were determined using the broth microdilution method, Etest and population analysis profiling). Different mutants (ΔphoP, ΔphoQ, ΔphoPQ, ΔpmrA, ΔpmrB, ΔpmrAB, ΔarnE, ΔarnF and ΔarnBCADTEF) were constructed and tested for their colistin hetero-resistance phenotype.

Fatal nosocomial meningitis caused by Mycoplasma hominis in an adult patient: case report and review of the literature.

Meningitis due to Mycoplasma hominis in adults is rarely described, with only three cases having been reported to date. A case of fatal meningitis in a 39-year-old patient after a neurosurgical procedure for a subarachnoid haemorrhage is reported herein. Identification and treatment were significantly delayed because of the rarity of the aetiology and difficulty identifying this organism with the routinely used conventional methods, such as Gram staining and agar growth on standard agar plates.

Landscape of Resistance-Nodulation-Cell Division (RND)-Type Efflux Pumps in Enterobacter cloacae Complex.

In Gram-negative bacteria, the active efflux is an important mechanism of antimicrobial resistance, but little is known about theEnterobacter cloacaecomplex (ECC). It is mediated primarily by pumps belonging to the RND (resistance-nodulation-cell division) family, and only AcrB, part of the AcrAB-TolC tripartite system, was characterized in ECC. However, detailed genome sequence analysis of the strainE.

In vitro antimicrobial susceptibility of Alloscardovia omnicolens and molecular mechanisms of acquired resistance.

All the 31 isolates of Alloscardovia omnicolens exhibited low MICs for β-lactams, glycopeptides, linezolid, tetracyclines, and cotrimoxazole. One strain showed MICs ≥256μg/mL for both erythromycin and clindamycin with a single point mutation in 23S rRNA. One strain likely had acquired fluoroquinolone resistance associated with a unique mutation in ParC.