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Buruli ulcer is an emerging infectious disease caused by that has been reported from 33 countries. Antimicrobial agents either alone or in combination with surgery have been proved to be clinically relevant and therapeutic strategies have been deduced mainly from the empirical experience. The genome sequences of . strain AGY99, ecovar liflandii, and three strains were analyzed to predict resistance in these bacteria. Fourteen putative antibiotic resistance genes from different antibiotics classes were predicted in and mutation in G (R431G) and A (T47A, V125I) genes were detected, that confer resistance to isoniazid and pyrazinamide, respectively. No mutations were detected in , A, B, L, , , A, 23S ribosomal RNA genes and promoter region of A and C genes associated with resistance. Our results reemphasize the usefulness of in silico analysis for the prediction of antibiotic resistance in fastidious bacteria.
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http://dx.doi.org/10.4269/ajtmh.16-0478 | DOI Listing |
Microb Drug Resist
September 2025
Infectious Diseases and Tropical Medicine Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, I.R. Iran.
Fluoroquinolone resistance in , particularly uropathogenic (UPEC), is a growing concern worldwide. This study investigates the association between mutations in the and genes and fluoroquinolone resistance in UPEC isolates from Urine samples in Iran. In total, 150 UPEC isolates were collected, and then, 12 ciprofloxacin-resistant isolates were selected for molecular analysis.
View Article and Find Full Text PDFBiochim Biophys Acta Biomembr
September 2025
Department of Pharmaceutical Sciences, University of Vienna, Josef-Holaubek-Platz 2, Vienna, Austria.. Electronic address:
Using the stable synthetic analogue 3-aza-dehydroxylysyl-phosphatidylglycerol (3adLPG), the putative role of native staphylococcal LPG in inhibiting the antibiotic daptomycin from binding to its target phosphatidylglycerol (PG), was investigated with respect to interfacial interactions between these lipids, daptomycin, and calcium ions. The influence of lipid monolayer/bilayer composition and interfacial ion concentrations upon the structure and integrity of model membranes were probed after daptomycin challenge using a combination of surface x-ray scattering techniques and fluorescence assays. In models representing the membrane composition of the daptomycin susceptible phenotype consisting of PG/3adLPG in a 7:3 M ratio, calcium ions drive the formation of two separate phases; Ca cross-linked PG/PG pairs and PG/3adLPG ion pairs.
View Article and Find Full Text PDFInt J Antimicrob Agents
September 2025
Unity Health Toronto, St. Joseph's Health Centre, Toronto, Ontario, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada; Unity Health Toronto, Li Ka Shing Knowledge Institute, Toronto, Ontario, Canada. Electronic address: Gregory.German@unityhe
Chronic urinary tract infections are persistent bacterial infections with the potential to drive antibiotic resistance. Like other persistent bacterial infections, intracellular bacterial reservoirs and biofilm formation hinder the clearance of pathogens despite long courses of antibiotic therapy. New strategies for treatment of these persistent infections are needed.
View Article and Find Full Text PDFInt J Antimicrob Agents
September 2025
Department of Pediatric Respiratory, Children's Medical Center, The First Hospital of Jilin University, Changchun, 130021, China. Electronic address:
The global proliferation of antibiotic-resistant Staphylococcus aureus, particularly methicillin-resistant Staphylococcus aureus (MRSA), highlights the urgent need for innovative antivirulence strategies. The redundancy and multiplicity of virulence factors produced by S. aureus necessitate interventions capable of concurrently targeting multiple virulence mechanisms.
View Article and Find Full Text PDFVaccine
September 2025
Department of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan.
Oral vaccination offers a promising strategy for controlling Helicobacter pylori infection, particularly in the face of rising antibiotic resistance and reinfection rates. In this study, we developed a chitosan nanoparticle-mediated oral DNA vaccine encoding the urease B subunit of H. pylori.
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