Hemolysis And Hemolysins
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. Cytolytic and systemic toxic effects induced by the aqueous extract of the fire coral Millepora alcicornis collected in the Mexican Caribbean and detection of two types of cytolisins
AbstractBackground Millepora alcicornis is a branching hydrocoral common throughout the Caribbean Sea. Like other members of this genus, this species is capable of inducing skin eruptions and blisters with severe pain after contact. In the present study, we investigated the toxicity of theM. alcicornis aqueous extract on several animal models. Considering th
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 20/10/2015
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2. Characteristics of hemolytic activity induced by the aqueous extract of the Mexican fire coral Millepora complanata
Background Millepora complanata is a plate-like fire coral common throughout the Caribbean. Contact with this species usually provokes burning pain, erythema and urticariform lesions. Our previous study suggested that the aqueous extract of M. complanata contains non-protein hemolysins that are soluble in water and ethanol. In general, the local damage ind
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 19/12/2014
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3. Produção de proteases e fator hemolítico e switching fenotípico em Candida spp
Yeast species belonging to the genus Candida are responsible for the majority of fungal infections in humans. The aim of the present study was to determine haemolytic and protease activities of clinical isolates of Candida parapsilosis and Candida tropicalis obtained from anatomically distinct sites, and to determine the frequency of phenotypic switching in
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/02/2010
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4. Citotoxinas e hemolisinas produzidas por Campylobacter jejuni isolados de diferentes origens / Citotoxins and hemolysins produced for Campylobacter jejuni isolated from different sources
Membros termofílicos do gênero Campylobacter são reconhecidos como importantes enteropatógenos para o homem e também para outros animais. A grande diversidade ecológica deste microrganismo, encontrado em diferentes habitat tais como: águas, animais e alimentos, indica que estudos sobre os diversos fatores de virulência poderiam contemplar este difere
Publicado em: 2006
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5. Citotoxinas e hemolisinas produzidas por Campylobacter jejuni isolados de diferentes origens / Citotoxins and hemolysins produced for Campylobacter jejuni isolated from different sources
Membros termofílicos do gênero Campylobacter são reconhecidos como importantes enteropatógenos para o homem e também para outros animais. A grande diversidade ecológica deste microrganismo, encontrado em diferentes habitat tais como: águas, animais e alimentos, indica que estudos sobre os diversos fatores de virulência poderiam contemplar este difere
Publicado em: 2006
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6. Solubilização de membranas eritrocitarias : analise quantitativa do efeito hemolitico induzido por surfatantes
Surfatantes ou detergentes são compostos anfifílicos que, na presença de água, têm a característica de formar agregados micelares. Surfatantes induzem a desestruturação de outros agregados como bicamadas sendo, por isso, usados para ruptura celular ou solubilização de lipídios e proteínas de membrana. A capacidade lítica dos surfatantes resulta
Publicado em: 2006
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7. Cholesterol-dependent hemolytic activity of Passiflora quadrangularis leaves
Plants used in traditional medicine are rich sources of hemolysins and cytolysins, which are potential bactericidal and anticancer drugs. The present study demonstrates for the first time the presence of a hemolysin in the leaves of Passiflora quadrangularis L. This hemolysin is heat stable, resistant to trypsin treatment, has the capacity to froth, and acts
Brazilian Journal of Medical and Biological Research. Publicado em: 2005-07
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8. Activities of Aeromonas hydrophila hemolysins and their interaction with erythrocyte membranes.
The activity of hemolysin produced by Aeromonas hydrophila CA-11, isolated from an environmental source, was more sensitive to temperature than that of hemolysin produced by strain AH-1, isolated from a diarrheal case. CA-11 hemolysin failed to elicit hemolysis below 10 degrees C. Immunoblotting analyses showed that both hemolysins formed into oligomers in r
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9. The secreted hemolysins of Proteus mirabilis, Proteus vulgaris, and Morganella morganii are genetically related to each other and to the alpha-hemolysin of Escherichia coli.
Secreted hemolysins were extremely common among clinical isolates of Proteus mirabilis, Proteus vulgaris, and Morganella morganii, and hemolytic activity was either cell associated or cell free. Southern hybridization of total DNA from hemolytic isolates to cloned regions of the Escherichia coli alpha-hemolysin (hly) determinant showed clear but incomplete h
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10. Analysis of the lytic activity of the Serpulina hyodysenteriae hemolysin.
The hemolysins of Serpulina hyodysenteriae are active at 27 to 40 degrees C and pH 3 to 9 and are unaffected by enzymatic inhibitors. Pore formation was demonstrated by the inhibition of hemolysis with molecules of 2.0 to 2.3 nm in diameter and the release of 86rubidium from erythrocytes without hemoglobin release after exposure to native hemolysin.
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11. Hemagglutination and Hemolysis by : Lichen Extracts
Twenty-two species of lichens from 10 different genera possessed a hemagglutinin for one or more of human, sheep, horse, cow, rabbit, guinea pig, and chicken erythrocytes. Hemolysins were also detected occasionally, but these were only active at low dilutions. In those species tested, the hemolytic principle was dialyzable; the hemagglutinating agent was not
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12. Candida Species Exhibit Differential In Vitro Hemolytic Activities
A total of 80 Candida isolates representing 14 species were examined for their respective responses to an in vitro hemolytic test. A modification of a previously described plate assay system where the yeasts are incubated on glucose (3%)-enriched sheep blood agar in a carbon dioxide (5%)-rich environment for 48 h was used to evaluate the hemolytic activity.
American Society for Microbiology.