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Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 6
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A fast and simple assay to quantify bacterial leukotoxin activity Electron. J. Biotechnol.
Oppermann,Tobias; Schwarz,Stefan; Busse,Nadine; Czermak,Peter.
Background: Mannheimia haemolytica is the primary bacterial pathogen in causing bovine respiratory disease with tremendous annual losses in the cattle industry. The leukotoxin from M. haemolytica is the predominant virulence factor. Several leukotoxin activity assays are available but not standardized regarding sample preparation and cell line. Furthermore, these assays suffer from a high standard error, a prolonged time consumption and often complex sample pretreatments, which is important from the bioprocess engineering point of view. Results: Within this study, an activity assay based on the continuous cell line BL3.1 combined with a commercial available adenosine triphosphate viability assay kit was established. The leukotoxin activity was found to be...
Tipo: Journal article Palavras-chave: ATP assay; Bacterial pathogen; Bovine respiratory disease; Cattle industry; Critical parameters; Lipopolysaccharides; Mannheimia haemolytica; Microbial biotechnology; Polymyxin B; Quantification; Virulence.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000600006
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Effect of yacon syrup on blood lipid, glucose and metabolic endotoxemia in healthy subjects: a randomized, double-blind, placebo-controlled pilot trial Ciênc. Tecnol. Aliment.
DIONÍSIO,Ana Paula; SILVA,Maria de Fátima Gomes da; CARIOCA,Antônio Augusto Ferreira; ADRIANO,Lia Silveira; ABREU,Fernando Antônio Pinto de; WURLITZER,Nedio Jair; PINTO,Claudia de Oliveira; PONTES,Dorasilvia Ferreira.
Abstract We investigate the impact of yacon syrup consumption on glycemic, lipid and metabolic endotoxemia in healthy subjects. Thus, 32 healthy were randomized into two groups that consumed 40 g of yacon syrup/day (= 8.74 g FOS/day) or a placebo, for 2-weeks. Anthropometric assessments, gastrointestinal effects, glycemic and lipid profile, and LPS were performed at the beginning and at the end of the study. The results obtained shown that the 2-weeks consumption of yacon syrup does not promote serum LPS alteration in healthy volunteers. Moreover, the glycemic and lipid profile were also similar between the groups before and after the intervention. Yacon syrup did not affect blood lipid, glucose or metabolic endotoxemia. However, it is possible that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Smallanthus sonchifolius; Fructooligosaccharides; Prebiotics; Lipopolysaccharides.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019005031129
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Effects of propofol on damage of rat intestinal epithelial cells induced by heat stress and lipopolysaccharides BJMBR
Tang,J.; Jiang,Y.; Tang,Y.; Chen,B.; Sun,X.; Su,L.; Liu,Z..
Gut-derived endotoxin and pathogenic bacteria have been proposed as important causative factors of morbidity and death during heat stroke. However, it is still unclear what kind of damage is induced by heat stress. In this study, the rat intestinal epithelial cell line (IEC-6) was treated with heat stress or a combination of heat stress and lipopolysaccharide (LPS). In addition, propofol, which plays an important role in anti-inflammation and organ protection, was applied to study its effects on cellular viability and apoptosis. Heat stress, LPS, or heat stress combined with LPS stimulation can all cause intestinal epithelial cell damage, including early apoptosis and subsequent necrosis. However, propofol can alleviate injuries caused by heat stress, LPS,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Propofol; Heat stress; Lipopolysaccharides; Apoptosis; Intestinal epithelial cells.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000600507
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Genome features of Leptospira interrogans serovar Copenhageni BJMBR
Nascimento,A.L.T.O.; Verjovski-Almeida,S.; Van Sluys,M.A.; Monteiro-Vitorello,C.B.; Camargo,L.E.A.; Digiampietri,L.A.; Harstkeerl,R.A.; Ho,P.L.; Marques,M.V.; Oliveira,M.C.; Setubal,J.C.; Haake,D.A.; Martins,E.A.L..
We report novel features of the genome sequence of Leptospira interrogans serovar Copenhageni, a highly invasive spirochete. Leptospira species colonize a significant proportion of rodent populations worldwide and produce life-threatening infections in mammals. Genomic sequence analysis reveals the presence of a competent transport system with 13 families of genes encoding for major transporters including a three-member component efflux system compatible with the long-term survival of this organism. The leptospiral genome contains a broad array of genes encoding regulatory system, signal transduction and methyl-accepting chemotaxis proteins, reflecting the organism's ability to respond to diverse environmental stimuli. The identification of a complete set...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Leptospira interrogans; Outer membrane proteins; Lipopolysaccharides; Transport; Regulatory systems.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000400003
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Propolis derivatives inhibit the systemic inflammatory response and protect hepatic and neuronal cells in acute septic shock BJID
Korish,Aida Abdelhamid; Arafa,Maha Mohamed.
BACKGROUND: Severe pathogenic infection triggers excessive release of cytokines as part of the massive inflammatory response associated with septic shock. OBJECTIVES: To investigate the protective effect of caffeic acid phenethye ester (CAPE) against lipopolysaccharide (LPS) induced endotoxemia, hepatic and neuronal damage and the associated systemic inflammatory response (SIR). METHODS: Fifty male Wister rats were divided into: control, LPS, and CAPE+LPS groups. Plasma concentrations of various cytokines, including TNF-α, IL-1α, IL-1β, IL-6, IL-4, IL-10, and sICAM-1 were evaluated. In addition, the histopathological changes in the hepatic and neural cells were assessed. RESULTS: The LPS group showed high inflammatory cytokines and sICAM-1 levels...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lipopolysaccharides; Septic shock; Systemic inflammatory response syndrome; Cytokines.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702011000400006
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Vaccines based on the cell surface carbohydrates of pathogenic bacteria Anais da ABC (AABC)
Jones,Christopher.
Glycoconjugate vaccines, in which a cell surface carbohydrate from a micro-organism is covalently attached to an appropriate carrier protein are proving to be the most effective means to generate protective immune responses to prevent a wide range of diseases. The technology appears to be generic and applicable to a wide range of pathogens, as long as antibodies against surface carbohydrates help protect against infection. Three such vaccines, against Haemophilus influenzae type b, Neisseria meningitidis Group C and seven serotypes of Streptococcus pneumoniae, have already been licensed and many others are in development. This article discusses the rationale for the development and use of glycoconjugate vaccines, the mechanisms by which they elicit T...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycoconjugate Vaccines; Capsular polysaccharides; Lipopolysaccharides.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652005000200009
Registros recuperados: 6
Primeira ... 1 ... Última
 

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