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Showing 1-28 of 28 results for "S7531" within Papers
S Forti et al.
European journal of biochemistry, 181(3), 767-773 (1989-05-15)
alpha-Toxin, a lethal hemolytic toxin secreted by Staphylococcus aureus, forms ionic channels of large size in lipid membranes. To investigate the mechanism of channel assembly we have studied the kinetics of pore formation on small unilamellar vesicles. We have used
Olivia A Todd et al.
mBio, 10(3) (2019-06-06)
Candida albicans and Staphylococcus aureus are among the most prevalent nosocomial pathogens that are responsible for severe morbidity and mortality, even with appropriate treatment. Using a murine model of polymicrobial intra-abdominal infection (IAI), we have previously shown that coinfection with
Raisa Turja et al.
Environmental science and pollution research international, 27(13), 15498-15514 (2020-02-23)
In the brackish water Baltic Sea, oil pollution is an ever-present and significant environmental threat mainly due to the continuously increasing volume of oil transport in the area. In this study, effects of exposure to crude oil on two common
Annika Krueger et al.
Frontiers in microbiology, 12, 789042-789042 (2022-02-12)
Squamous cell carcinoma (SCC) is a common type of skin cancer that typically arises from premalignant precursor lesions named actinic keratoses (AK). Chronic inflammation is a well-known promoter of skin cancer progression. AK and SCC have been associated with an
Alicia Lacoma et al.
Toxins, 13(2) (2021-02-11)
Staphylococcus aureus is a commensal and frequent colonizer of the upper respiratory tract. When mechanical ventilation disrupts natural defenses, S. aureus is frequently isolated from the lower airways, but distinguishing between colonization and infection is difficult. The objectives of this
Zi Xin Ong et al.
Microorganisms, 12(2) (2024-02-24)
Cancer therapies developed using bacteria and their components have been around since the 19th century. Compared to traditional cancer treatments, the use of bacteria-derived compounds as cancer therapeutics could offer a higher degree of specificity, with minimal off-target effects. Here
Shi-Jie Wan et al.
Frontiers in chemistry, 10, 877469-877469 (2022-04-19)
The emergence of antibiotic resistance in Staphylococcus aureus has necessitated the development of innovative anti-infective agents acting on novel targets. Alpha-hemolysin (Hla), a key virulence factor of S. aureus, is known to cause various cell damage and death. In this
Shisong Jing et al.
Virulence, 13(1), 578-588 (2022-04-02)
The resistance of Staphylococcus aureus (S. aureus) to various antibiotics has increased dramatically due to the misuse of antibiotics, and thus the development of new anti-infective drugs with new targets is urgently needed to combat resistance. Caseinolytic peptidase P is
Adam Benedict Turner et al.
Frontiers in microbiology, 13, 931839-931839 (2022-08-23)
The widespread threat of antibiotic resistance requires new treatment options. Disrupting bacterial communication, quorum sensing (QS), has the potential to reduce pathogenesis by decreasing bacterial virulence. The aim of this study was to investigate the influence of sodium salicylate (NaSa)
Ina Eiffler et al.
American journal of physiology. Lung cellular and molecular physiology, 311(3), L676-L685 (2016-08-09)
Membrane potential (Vm)-, Na(+)-, or Ca(2+)-sensitive fluorescent dyes were used to analyze changes in Vm or intracellular ion concentrations in airway epithelial cells treated with Staphylococcus aureus α-toxin (Hla), a major virulence factor of pathogenic strains of these bacteria. Gramicidin
Kathrin Stelzner et al.
PLoS pathogens, 17(9), e1009874-e1009874 (2021-09-03)
Staphylococcus aureus is a major human pathogen, which can invade and survive in non-professional and professional phagocytes. Uptake by host cells is thought to contribute to pathogenicity and persistence of the bacterium. Upon internalization by epithelial cells, cytotoxic S. aureus
Pipat Piewngam et al.
Nature, 562(7728), 532-537 (2018-10-12)
Probiotic nutrition is frequently claimed to improve human health. In particular, live probiotic bacteria obtained with food are thought to reduce intestinal colonization by pathogens, and thus to reduce susceptibility to infection. However, the mechanisms that underlie these effects remain
Yongpeng Shang et al.
Frontiers in microbiology, 11, 865-865 (2020-07-17)
PhoU homologs are one of the determinant factors in the regulation of persister formation and phosphate metabolism in many bacterial species; however, the functions of PhoU homologs exhibit species-specific characteristics. The pathogenesis of Staphylococcus aureus is closely correlated with persister
Jimit Shah et al.
Cell reports, 25(8), 2132-2147 (2018-11-22)
We previously identified PLEKHA7 and other junctional proteins as host factors mediating death by S. aureus α-toxin, but the mechanism through which junctions promote toxicity was unclear. Using cell biological and biochemical methods, we now show that ADAM10 is docked to
Sabine Ziesemer et al.
Toxins, 11(2) (2019-02-23)
Interaction of Staphylococcus aureus alpha-toxin (hemolysin A, Hla) with eukaryotic cell membranes is mediated by proteinaceous receptors and certain lipid domains in host cell plasma membranes. Hla is secreted as a 33 kDa monomer that forms heptameric transmembrane pores whose
Ewa Olchowik-Grabarek et al.
Biochimica et biophysica acta. Biomembranes, 1864(10), 184011-184011 (2022-07-26)
Phenolic acids represent a class of drugs with mild antibacterial properties. We have synthesized iodinated gallic and ferulic acids and together with commercially available iodinated forms of salicylic acids studied their cytotoxicity, bacteriostatic and anti-virulence action. Out of these, iodogallic
Clarisse Leseigneur et al.
eLife, 11 (2022-06-21)
Nicotinamide adenine dinucleotide phosphate (NADPH) is the primary electron donor for reductive reactions that are essential for the biosynthesis of major cell components in all organisms. Nicotinamide adenine dinucleotide kinase (NADK) is the only enzyme that catalyzes the synthesis of
María Belén Mestre et al.
Autophagy, 6(1), 110-125 (2010-01-30)
Staphylococcus aureus is a pathogen that causes serious infectious diseases eventually leading to septic and toxic shock. Classically S. aureus has been considered an extracellular pathogen, but cumulative evidence indicates that it invades cells and replicates intracellularly leading to staphylococcal
Tilde Andersson et al.
Frontiers in cellular and infection microbiology, 10, 571578-571578 (2020-12-18)
Stapylococcus aureus is a common infectious agent in e.g. sepsis, associated with both high mortality rates and severe long-term effects. The cytolytic protein α-hemolysin has repeatedly been shown to enhance the virulence of S. aureus. Combined with an unhindered spread
Nils Möller et al.
PloS one, 15(5), e0233854-e0233854 (2020-05-30)
Alpha-toxin (Hla) is a major virulence factor of Staphylococcus aureus (S. aureus) and plays an important role in S. aureus-induced pneumonia. It binds as a monomer to the cell surface of eukaryotic host cells and forms heptameric transmembrane pores. Sensitivities
Nicoletta Schwermann et al.
PLoS pathogens, 19(12), e1011892-e1011892 (2024-01-02)
Staphylococcus aureus is a dangerous pathogen that evolved refined immuno-evasive strategies to antagonize host immune responses. This involves the biogenesis of death-effector deoxyribonucleosides, which kill infectious foci-penetrating macrophages. However, the exact mechanisms whereby staphylococcal death-effector deoxyribonucleosides and coupled imbalances of
M Thelestam et al.
Toxicon : official journal of the International Society on Toxinology, 26(1), 55-65 (1988-01-01)
The elucidation of the amino acid sequence of alpha toxin in 1984 has greatly promoted our understanding of the basic biochemistry and interaction of this toxin with membranes. These aspects are discussed and the concept of alpha toxin as a
Kira L Tomlinson et al.
Nature communications, 12(1), 1399-1399 (2021-03-05)
Staphylococcus aureus is a prominent human pathogen that readily adapts to host immune defenses. Here, we show that, in contrast to Gram-negative pathogens, S. aureus induces a distinct airway immunometabolic response dominated by the release of the electrophilic metabolite, itaconate.
Quercetin Reduces the Virulence of S. aureus by Targeting ClpP to Protect Mice from MRSA-Induced Lethal Pneumonia.
Jing, et al.
Microbiology spectrum, 10, e0234021-e0234021 (2022)
Jon Oscherwitz et al.
PloS one, 10(1), e0116882-e0116882 (2015-01-31)
The plethora of virulence factors associated with Staphylococcus aureus make this bacterium an attractive candidate for a molecularly-designed epitope-focused vaccine. This approach, which necessitates the identification of neutralizing epitopes for incorporation into a vaccine construct, is being evaluated for pathogens
Christophe Langouët-Astrié et al.
Cell reports, 41(9), 111721-111721 (2022-12-01)
Influenza infection is substantially worsened by the onset of secondary pneumonia caused by bacteria, such as methicillin-resistant Staphylococcus aureus (MRSA). The bidirectional interaction between the influenza-injured lung microenvironment and MRSA is poorly understood. By conditioning MRSA ex vivo in bronchoalveolar lavage
Zhongyuan Guo et al.
Advanced materials (Deerfield Beach, Fla.), 35(31), e2211717-e2211717 (2023-04-25)
While vaccines have been highly successful in protecting against various infections, there are still many high-priority pathogens for which there are no clinically approved formulations. To overcome this challenge, researchers have explored the use of nanoparticulate strategies for more effective
Jon Oscherwitz et al.
Molecular immunology, 60(1), 62-71 (2014-04-29)
Staphylococcus aureus is responsible for a large and diverse burden of human disease associated with significant morbidity and mortality. The dynamic challenge of this pathogen is exemplified by the emergence of highly virulent community-associated methicillin-resistant S. aureus strain USA300, which
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