We report the complete draft genome sequences of five individually isolated strains of methicillin-resistant Staphylococcus aureus (MRSA) and a Staphylococcus epidermidis strain. These clinically important isolates have staphylococcal cassette chromosome mec type A, while Panton-Valentine leukocidin (PVL) toxin coding genes were present in MRSA isolates only.
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http://dx.doi.org/10.1128/genomeA.00836-15 | DOI Listing |
Arch Microbiol
January 2025
Research Center for Pharmaceutical Ingredients and Traditional Medicine, National Research and Innovation Agency (BRIN), KST B.J. Habibie, Serpong, South Tangerang, 15314, Indonesia.
Antibacterial screening of endophytic fungi from Salacia intermedia identified Diaporthe longicolla as a potent strain exhibiting good activity against multidrug-resistant Staphylococcus aureus and Pseudomonas aeruginosa, with an MIC of 39.1 µg/mL. Scale-up fermentation and chromatographic purification of this strain yielded three known compounds, which were cytochalasin J (1), cytochalasin H (2), and dicerandrol C (3), as identified by liquid chromatography - high mass resolution mass spectrometry (LC-HRMS) and nuclear magnetic resonance (NMR) spectroscopy.
View Article and Find Full Text PDFOrg Biomol Chem
January 2025
Department of Pharmaceutical & Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, Georgia 30602, USA.
Bacterial biofilms are surface-attached communities consisting of non-replicating persister cells encased within an extracellular matrix of biomolecules. Unlike bacteria that have acquired resistance to antibiotics, persister cells enable biofilms to demonstrate innate tolerance toward all classes of conventional antibiotic therapies. It is estimated that 50-80% of bacterial infections are biofilm associated, which is considered the underlying cause of chronic and recurring infections.
View Article and Find Full Text PDFWhile key for pathogen immobilization, neutrophil extracellular traps (NETs) often cause severe bystander cell/tissue damage. This was hypothesized to depend on their prolonged presence in the vasculature, leading to cytotoxicity. Imaging of NETs (histones, neutrophil elastase, extracellular DNA) with intravital microscopy in blood vessels of mouse livers in a pathogen-replicative-free environment (endotoxemia) led to detection of NET proteins attached to the endothelium for months despite the early disappearance of extracellular DNA.
View Article and Find Full Text PDFCureus
December 2024
Pediatric Intensive Care Unit, Pediatric Department, King Saud University Medical City, College of Medicine, King Saud University, Riyadh, SAU.
Para-pneumonic effusion in children is often associated with bacterial infections; however, dual viral infections, including respiratory syncytial virus (RSV) and COVID-19, can also lead to severe respiratory complications, as demonstrated in this case. This case report presents the clinical course of a pediatric patient with both RSV and COVID-19 infections, leading to para-pneumonic effusion. A three-year-old girl with a history of asthma and prior febrile convulsions presented to the Emergency Department with fever, cough, vomiting, and fatigue.
View Article and Find Full Text PDFEur J Clin Microbiol Infect Dis
January 2025
Microbiology and Virology Unit, University Hospital Città Della Salute E Della Scienza Di Torino, Turin, Italy.
Purpose: To evaluate diagnostic performance of four diagnostic methods for rapid determination of methicillin resistance in S. aureus positive blood cultures (BCs).
Methods: Clinical and spiked BCs were subjected to the evaluation of the following methods and protocols: a.
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