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Thermodynamic Study on Biomimetic Bacterial Membranes.
Molecules
September 2024
Department of Interfacial Phenomena, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 3, 20-031 Lublin, Poland.
The presented studies were aimed at determining the interactions in model membranes (Langmuir monolayers) created of phospholipids (PL) isolated from bacteria cultured with (PL + choline) or without (PL - choline) choline and to describe the impact of an antimicrobial peptide, human cathelicidin LL-37, on PL's monolayer behavior. The addition of choline to the growth medium influenced the mutual proportions of phospholipids extracted from . Four classes of phospholipids-phosphatidylcholine (PC), phosphatidylethanolamine (PE), phosphatidylglycerol (PG), cardiolipin (CL), and their mixtures-were used to register compression isotherms with or without the LL-37 peptide in the subphase.
View Article and Find Full Text PDFSevere community‑acquired pneumonia caused by in combination with influenza A subtype (H1N1) virus in an immunocompetent patient detected by metagenomic next‑generation sequencing: A case report.
Biomed Rep
October 2024
Department of Laboratory Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China.
Legionella pneumonia is an atypical form of pneumonia caused by that can also lead to multiple organ diseases, including acute respiratory distress syndrome and multiple organ dysfunction syndrome. requires a long incubation period for culture in clinical practice using BCYE medium. The specificity of serum for serological detection is low, resulting in a relatively high rate of missed diagnoses.
View Article and Find Full Text PDFSusceptibility of Membrane-Derived Phospholipids to the Peptide Action of Antimicrobial LL-37-Langmuir Monolayer Studies.
Molecules
March 2024
Department of Genetics and Microbiology, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland.
LL-37 is the only member of the cathelicidin-type host defense peptide family in humans. It exhibits broad-spectrum bactericidal activity, which represents a distinctive advantage for future therapeutic targets. The presence of choline in the growth medium for bacteria changes the composition and physicochemical properties of their membranes, which affects LL-37's activity as an antimicrobial agent.
View Article and Find Full Text PDFThe Presence of in Water Used for Car Washing: Implications for Public Health.
Microorganisms
December 2023
Multispecialty Clinical Institute, Trauma Orthopedic Care, Via Ducezio 1, 98124 Messina, Italy.
Although today all of the aspects of are better understood than in the past, in many countries the interest is still mainly focused on healthcare and tourism facilities. Other at-risk areas are less explored, such as those where workers are often in contact with water during their activities. In reality, any water system capable of producing aerosols can be considered a potential source of transmission, including car washes, where a large number of users work and flow through annually.
View Article and Find Full Text PDFInsight into the Mechanism of Interactions between the LL-37 Peptide and Model Membranes of Bacteria.
Int J Mol Sci
July 2023
Department of Genetics and Microbiology, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland.
is a fastidious, Gram-negative bacterium known to be the etiological agent of atypical community-acquired pneumonia. The human cathelicidin LL-37 exhibits a dose-dependent bactericidal effect on . The LL-37 peptide at the concentration of 10 µM causes the bacteria to become viable but not cultured.
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