Results 71 to 80 of about 3,479 (180)

Heteroresistance to Meropenem in Carbapenem-Susceptible Acinetobacter baumannii [PDF]

Journal of Clinical Microbiology, 2009
ABSTRACT The characteristics of carbapenem heteroresistance were studied in 14 apparently carbapenem-susceptible Acinetobacter baumannii isolates. The MICs for carbapenems were determined, and the isolates were genotyped by pulsed-field gel electrophoresis (PFGE) and sequence typing (ST).
Ikonomidis, A., Neou, E., Gogou, V., Vrioni, G., Tsakris, A., Pournaras, S.   +5 more
openaire   +3 more sources

Clinical characteristics, molecular epidemiology and mechanisms of colistin heteroresistance in Enterobacter cloacae complex

Frontiers in Cellular and Infection Microbiology
IntroductionColistin has emerged as the last resort for treating multidrug-resistant Enterobacter cloacae complex (ECC) infections. The primary purposes of this study were to demonstrate the presence of colistin heteroresistance in ECC and to further ...
Chunli Wei, Jiming Wu, Jisheng Zhang, Youtao Liang, Kaixin Yu, Kaixin Yu, Mingjing Liao, Xushan Liang, Jianmin Wang, Wenzhang Long, Jin Wang, Shijian Chen, Yang Yang, Xue Gong, Jie Li, Xiaoli Zhang   +15 more
doaj   +1 more source

Oxidative Treatment for Reducing Persistent Populations of Escherichia coli Under Amoxicillin and Gentamicin Pressure

Journal of Biophotonics, Volume 19, Issue 3, March 2026.
Photodynamic inactivation (PDI) with methylene blue and 660 nm LED enhances antibiotic killing of bacteria, accelerating time‐kill kinetics and reducing the MDK99 compared to antibiotics alone. SEM confirms effective cellular damage, demonstrating that PDI potentiates amoxicillin and gentamicin against tolerant bacterial populations. ABSTRACT Bacterial
Bruna C. Correa, Maria Vitória S. Pereira, Vanderlei S. Bagnato, Kate C. Blanco   +3 more
wiley   +1 more source

Image_1_Characteristics of Helicobacter pylori Heteroresistance in Gastric Biopsies and Its Clinical Relevance.tif

, 2022
BackgroundAntimicrobial susceptibility testing (AST) plays a vital role in anti-Helicobacter pylori treatment, but the traditional AST method has difficulty detecting heteroresistance, which may cause an increased prevalence of resistant strains and ...
Xiao-yan Sun (12045974), Xiao-ling Gong (12045965), Rong Zeng (54019), Yong Xie (283717), You-hua Wang (12045962), Dong-sheng Liu (12045977), Ding-wei Liu (12045968), Lin-fu Zhou (12045971)   +7 more
core   +1 more source

Emerging Frontiers in Clinical Mycology: Innovations, Insights, and Impacts

Mycoses, Volume 69, Issue 1, January 2026.
ABSTRACT The Mycoses Study Group Education and Research Consortium (MSGERC)—a group comprising clinicians, researchers, patients, and industry partners—meets every 2 years to review the most significant challenges facing the clinical mycology community and plan research, education, and advocacy strategies to prevent fungal infections and improve ...
A. Apostolopoulou, A. G. Stewart, H. Yoon, J. M. Steinbrink, D. Z. P. Friedman, L. Ostrosky‐Zeichner, I. S. Schwartz, on behalf of the Mycoses Study Group Education and Research Consortium (MSGERC)   +7 more
wiley   +1 more source

Colistin heteroresistance in carbapenemase-producing Klebsiella pneumoniae [PDF]

Journal of Antimicrobial Chemotherapy, 2011
Sir, Klebsiella pneumoniae is an important pathogen that causes severe and life-threatening infections. Most isolates demonstrate resistance to various antimicrobial agents. Carbapenems have been widely used to treat serious infections with multidrug-resistant K. pneumoniae.
Georgios, Meletis, Egki, Tzampaz, Effrosyni, Sianou, Ioannis, Tzavaras, Danai, Sofianou   +4 more
openaire   +2 more sources

Antimicrobial Heteroresistance: an Emerging Field in Need of Clarity

, 2015
SUMMARY: "Heteroresistance" describes a phenomenon where subpopulations of seemingly isogenic bacteria exhibit a range of susceptibilities to a particular antibiotic.
El-Halfawy, Omar M., Valvano, Miguel A.; id_orcid   +1 more
core   +1 more source

Quorum sensing regulates heteroresistance in Pseudomonas aeruginosa

Frontiers in Microbiology, 2022
The prevalence and genetic mechanism of antibiotic heteroresistance (HR) have attracted significant research attention recently. However, non-genetic mechanism of HR has not been adequately explored. The present study aimed to evaluate the role of quorum sensing (QS), an important mechanism of behavioral coordination in different subpopulations and ...
Yang Lu, Yang Lu, Yuyang Liu, Yuyang Liu, Chenxu Zhou, Chenxu Zhou, Yaqin Liu, Yifei Long, Dongling Lin, Rui Xiong, Qian Xiao, Bin Huang, Cha Chen   +12 more
openaire   +3 more sources

Mutants with heteroresistance to amphotericin B and fluconazole in Candida [PDF]

Brazilian Journal of Microbiology, 2009
Several studies have reported the occurrence of infections caused by Candida yeasts as well as the increasing prevalence of non albicans species. The aim of the present work is focused on the obtaining of heteroresistance to amphotericin B and fluconazole in Candida species using two distinct methodologies: selection and induction.
Claudino, A.L.R., Peixoto Junior, R.F., Melhem, M.S.C., Szeszs, M.W., Lyon, J.P., Chavasco, J.K., Franco, M.C.   +6 more
openaire   +4 more sources

Update of the list of qualified presumption of safety (QPS) recommended microbiological agents intentionally added to food or feed as notified to EFSA 23: Suitability of taxonomic units notified to EFSA until September 2025

EFSA Journal, Volume 24, Issue 1, January 2026.
Abstract The qualified presumption of safety (QPS) process was developed to provide a harmonised safety assessment approach to support EFSA Scientific Panels and Units. The QPS approach assesses the taxonomic identity, body of relevant knowledge and safety of microorganisms intentionally added to the food and feed chain.
EFSA Panel on Biological Hazards (BIOHAZ), Ana Allende, Avelino Alvarez‐Ordóñez, Valeria Bortolaia, Sara Bover‐Cid, Alessandra De Cesare, Wietske Dohmen, Laurent Guillier, Liesbeth Jacxsens, Maarten Nauta, Lapo Mughini‐Gras, Jakob Ottoson, Luisa Peixe, Fernando Perez‐Rodriguez, Panagiotis Skandamis, Elisabetta Suffredini, Marianne Chemaly, Pier Sandro Cocconcelli, Pablo Salvador Fernández Escámez, Miguel Prieto Maradona, Amparo Querol, Lolke Sijtsma, Juan Evaristo Suarez, Ingvar Sundh, Fulvio Barizzone, Justine Dastouet, Nadya Doyle, Sandra Correia, Lieve Herman   +28 more
wiley   +1 more source