Background: The purpose of the study was to understand the distribution and drug resistance characteristics of Enterococcus so as to provide a reliable basis for clinical use of antibiotics and hospital infection control.
Methods: In total, 3,455 strains of Enterococcus, isolated from January 2010 through December 2021, were col-lected. Bruker MALDI biotyper, MICROSCAN walkaway 40 analysis system, and Vitek-2 compact automatic drug sensitivity identification analyzer were used to identify the strains and to test drug sensitivity, and then the results were analyzed. Whonet 5.6 software and SPSS 20.0 were used for data analysis.
Results: Among the 3,455 pathogens, the top three were Enterococcus faecium (1,819 strains, 52.65%), Enterococcus faecalis (1,310 strains, 37.92%), and Enterococcus gallinarum (1,203 strains, 3.47%). There were more strains from females (1,808 strains, 52.33%) than from males (1,647 strains, 47.67%). Furthermore, 1,446 strains (41.85%) were isolated from urine samples, and the resistance rates to vancomycin and linezolid were 15.72% and 0.58%, respectively. The resistance rates to penicillin, ampicillin, ciprofloxacin, and levofloxacin were higher than 50%.
Conclusions: Enterococcus faecium was the main pathogen of enterococcal infection. Most of them were cultured in urine. The multi-drug resistance was high. Vancomycin-resistant Enterococcus cannot be ignored. Bacterial resistance monitoring provides an important theoretical basis for clinicians to rationally use antibiotics and prevent nosocomial infection.
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http://dx.doi.org/10.7754/Clin.Lab.2024.240801 | DOI Listing |
Adv Healthc Mater
March 2025
Aix Marseille Université, INSERM, SSA, MCT, Marseille, 13385, France.
Efflux-mediated antibiotic resistance poses a significant global threat, affecting diverse bacterial species. Clinicians recognize the danger of efflux mechanisms during antibiotic treatment, yet precise diagnostic tools remain unavailable. The antibiogram currently infers abnormal efflux pump activity in clinical isolates, which is subsequently confirmed through transcriptomic or genomic analysis.
View Article and Find Full Text PDFBackground: Ceftazidime-avibactam and colistin are antibiotics of new and regaining importance used for the treatment of infections caused by multidrug-resistant organisms. The broth microdilution (BMD) test recommended for detecting colistin sensitivity is labor-intensive and difficult to perform under routine conditions. There is a need for alternative methods that produce fast and reliable results in routine laboratory studies.
View Article and Find Full Text PDFBackground: The emergence of OXA-type beta-lactamases has become a significant threat to public healthcare systems and may lead to prolonged hospital stays and increased mortality rates among affected patients. This study aimed to determine the prevalence of oxacillinase resistance (OXA) genes in multidrug-resistant (MDR) Gram-negative bacteria.
Methods: One hundred and six clinical isolates were collected from a stock of Gram-negative isolates and were identified and tested for antibiotic susceptibility and presence of OXA genes using polymerase chain reaction (PCR).
Background: The purpose of the study was to understand the distribution and drug resistance characteristics of Enterococcus so as to provide a reliable basis for clinical use of antibiotics and hospital infection control.
Methods: In total, 3,455 strains of Enterococcus, isolated from January 2010 through December 2021, were col-lected. Bruker MALDI biotyper, MICROSCAN walkaway 40 analysis system, and Vitek-2 compact automatic drug sensitivity identification analyzer were used to identify the strains and to test drug sensitivity, and then the results were analyzed.
Adv Mater
March 2025
Key Laboratory of Light Energy Conversion Materials of Hunan Province College, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan, 410081, China.
Iridium-based electrocatalysts are commonly regarded as the sole stable operating acidic oxygen evolution reaction (OER) catalysts in proton-exchange membrane water electrolysis (PEMWE), but the linear scaling relationship (LSR) of multiple reaction intermediates binding inhibits the enhancement of its activity. Herein, the compressive strain and oxygen vacancy effect exists in iridium dioxide (IrO)-based catalyst by a doping engineering strategy for efficient acidic OER activity. In situ synchrotron characterizations elucidate that compressive strain can enhance Ir─O covalency and reduce the Ir─Ir bond distance, and oxygen vacancy (O) as an electronic regulator causes rapid adsorption of water molecules on the Ir and adjacent Ov (Ir─O) pair site to be coupled directly into O─O intermediates.
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