نتایج جستجو برای: hemolysin factor

تعداد نتایج: 846727  

Journal: :Journal of bacteriology 1966
J M Jay

Jay, James M. (Wayne State University, Detroit, Mich.). Production of lysozyme by staphylococci and its correlation with three other extracellular substances. J. Bacteriol. 91:1804-1810. 1966.-Lysozyme production was determined on plates containing 1 mg/ml of Lysozyme Substrate in Heart Infusion Agar with incubation at 37 C for 48 hr. Its production was compared with that of alpha-hemolysin and...

Journal: :FEBS letters 2007
Manuela Pastoriza-Gallego Ghani Oukhaled Jérôme Mathé Bénédicte Thiebot Jean-Michel Betton Loïc Auvray Juan Pelta

The aim of this work is to study pore protein denaturation inside a lipid bilayer and to probe current asymmetry as a function of the channel conformation. We describe the urea denaturation of alpha-hemolysin channel and the channel formation of alpha-hemolysin monomer incubated with urea prior to insertion into a lipid bilayer. Analysis of single-channel recordings of current traces reveals a ...

Journal: :Applied and environmental microbiology 1982
S Peters J A Baross R Y Morita

Psychrotrophic Kanagawa-positive marine vibrios were isolated from soft-shelled clams (Mya arenaria) collected in Yaquina Bay, Oreg. The 235 vibrio isolates obtained were screened for Gram reaction and morphology, Kanagawa reaction on Wagastsuma agar, and response to selected biochemical tests. The vibrio selected for further study was grown in broth, and the hemolysin was precipitated from a c...

Journal: :Infection and immunity 1985
J Scheffer W König J Hacker W Goebel

We investigated the role of bacterial adherence and hemolysin production from Escherichia coli parent and genetically cloned strains as to their effects on histamine release from rat mast cells and leukotriene generation from human polymorphonuclear granulocytes. These mediators were involved in the induction of inflammatory disease processes and led, for example, to enhancement of vascular per...

2015
Harald Rouha Adriana Badarau Zehra C Visram Michael B Battles Bianka Prinz Zoltán Magyarics Gábor Nagy Irina Mirkina Lukas Stulik Manuel Zerbs Michaela Jägerhofer Barbara Maierhofer Astrid Teubenbacher Ivana Dolezilkova Karin Gross Srijib Banerjee Gerhild Zauner Stefan Malafa Jakub Zmajkovic Sabine Maier Robert Mabry Eric Krauland K Dane Wittrup Tillman U Gerngross Eszter Nagy

Staphylococcus aureus is a major human pathogen associated with high mortality. The emergence of antibiotic resistance and the inability of antibiotics to counteract bacterial cytotoxins involved in the pathogenesis of S. aureus call for novel therapeutic approaches, such as passive immunization with monoclonal antibodies (mAbs). The complexity of staphylococcal pathogenesis and past failures w...

Journal: :Journal of clinical microbiology 1989
E M Kamp L A van Leengoed

Reference strains of serotypes 1 to 12 of Actinobacillus (Haemophilus) pleuropneumoniae were cultured in Eagle minimal essential medium with 10% Serum Plus. Culture supernatants were examined for cytotoxicity to alveolar macrophages and for the ability to hemolyze sheep erythrocytes. All strains except the reference strain of serotype 6 produced cytotoxin, whereas only serotypes 1, 5, 9, 10, an...

Journal: :Journal of clinical microbiology 2003
Laura Rindi Daniela Bonanni Nicoletta Lari Carlo Garzelli

Hemolysin was quantified in 58 isolates of Mycobacterium avium from human, animal, and environmental sources. Human Mav-A and Mav-B isolates were the strongest producers; in contrast, animal and environmental Mav-A isolates and human, animal, and environmental Mav-C organisms were low-level producers. Hemolysin production was not restricted to isolates causing invasive infections.

Journal: :Microbiology resource announcements 2021

We report a de novo -assembled draft genome sequence of the Indian Staphylococcus aureus type 88 (ST88) strain LVP-7, isolated from an ocular infection. The harbors Panton-Valentine leukocidin phage, V staphylococcal cassette chromosome mec element, delta-hemolysin-converting Newman phage ΦNM3, and pathogenicity island SaPI3, encoding superantigen enterotoxin B.

Journal: :Journal of Experimental Medicine 1932

2014
Besnik Krasniqi Jeremy S. Lee

The application of nanopore sensing utilizing the α-hemolysin pore to probe proteins at single-molecule resolution has expanded rapidly. In some studies protein translocation through the α-hemolysin has been reported. However, there is no direct evidence, as yet, that proteins can translocate the α-hemolysin pore. The biggest challenge to obtaining direct evidence is the lack of a highly sensit...

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