Antigens Of Bacteria
Mostrando 1-12 de 636 artigos, teses e dissertações.
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1. Humoral and cellular immune response of mice challenged with Yersinia pestis antigenic preparations
ABSTRACT Objectives: The plague, which is an infectious disease caused by Yersinia pestis, still threatens many populations in several countries. The worldwide increase in human plague cases and the potential use of the bacteria as a biological weapon reinforce the need to study the immunity that is induced by potential vaccine candidates. To determine the
Braz J Infect Dis. Publicado em: 2017-12
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2. Live bacterial vaccine vectors: An overview
Genetically attenuated microorganisms, pathogens, and some commensal bacteria can be engineered to deliver recombinant heterologous antigens to stimulate the host immune system, while still offering good levels of safety. A key feature of these live vectors is their capacity to stimulate mucosal as well as humoral and/or cellular systemic immunity. This enab
Braz. J. Microbiol.. Publicado em: 2014-12
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3. Clonagem molecular do gene ipaC de Shigella sp e estudo da expressão por Lactococcus lactis / Molecular cloning and expression analysis in Lactococcus lactis of ipaC gene from Shigella sp
Shigellosis is a severe intestinal infection caused by Gram-negative bacteria which belongs to the genus Shigella. It is a pathology with high incidence and it is known that 99% of cases occur in underdevelopment countries. Among these cases, 69% of them affect children under 5 years old. The high incidence of Shigella in underdevelopment countries, is mainl
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/05/2012
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4. Recombinant vaccines and the development of new vaccine strategies
Vaccines were initially developed on an empirical basis, relying mostly on attenuation or inactivation of pathogens. Advances in immunology, molecular biology, biochemistry, genomics, and proteomics have added new perspectives to the vaccinology field. The use of recombinant proteins allows the targeting of immune responses focused against few protective ant
Braz J Med Biol Res. Publicado em: 2012-12
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5. Biofilm formation and binding specificities of CFA/I, CFA/II and CS2 adhesions of Enterotoxigenic Escherichia coli and CfaE-R181A mutant
Enterotoxigenic Escherichia coli (ETEC) strains are leading causes of childhood diarrhea in developing countries. Adhesion is the first step in pathogenesis of ETEC infections and ETEC pili designated colonization factor antigens (CFAs) are believed to be important in the biofim formation, colonization and host cell adhesions. As a first step, we have determ
Braz. J. Microbiol.. Publicado em: 2012-09
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6. Phenotypical characterization and adhesin identification in Escherichia coli strains isolated from dogs with urinary tract infections
Pathogenic strains of Escherichia coli are the most common bacteria associated with urinary tract infections in both humans and companion animals. Standard biochemical tests may be useful in demonstrating detailed phenotypical characteristics of these strains. Thirteen strains of E. coli isolated from dogs with UTIs were submitted to biochemical tests, serot
Brazilian Journal of Microbiology. Publicado em: 2012-03
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7. Immunodetection of Helicobacter sp. and the associated expression of ABO blood group antigens in the gastric mucosa of captive and free-living New World primates in the Amazon region
The histo-blood group ABH antigens were first described in humans. These antigens are only present on erythrocytes from great apes and humans, while in more primitive animals they are found in tissues and body fluids. The ABH antigens are mainly distributed in tissues exposed to the external environment and potentially serve as ligands for pathogens or inhib
Memórias do Instituto Oswaldo Cruz. Publicado em: 2011-12
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8. Helicobacter pylori adhesion to gastric epithelial cells is mediated by glycan receptors
Helicobacter pylori adhesion to gastric epithelial cells constitutes a key step in the establishment of a successful infection of the gastric mucosa. The high representation of outer membrane proteins in the bacterial genome suggests the relevance of those proteins in the establishment of profitable interactions with the host gastric cells. Gastric epithelia
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-07
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9. A study of iga antibody response to different mycobacterium tuberculosis antigens in the diagnosis and monitoring of pulmonary tuberculosis
We evaluated the performance of the ELISA technique in the detection of IgA antibodies against different Mycobacterium tuberculosis antigenic preparations in serum samples from 49 patients with pulmonary tuberculosis collected before and after the start of specific treatment. The controls consisted of serum samples from healthy patients without any prior con
Brazilian Journal of Infectious Diseases. Publicado em: 2009-02
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10. Clonagem, expressão e purificação de proteínas candidatas vacinais de Leptospira interrogans sorovar Copenhageni. Avaliação de atividades imunogênicas e características funcionais. / Cloning, expression and purification of proteins, vaccine candidates from Leptospira interrogans sorovar Copenhageni. Evaluation of immunogenic and functional characteristics.
Leptospirosis is a zoonosis worldwide distributed, caused by bacteria from the genus Leptospira. The development of an efficient vaccine of sub-unities would be of major interest for public health. We proposed to investigate 4 antigens from Leptospira interrogans srv Copenhageni, genes LIC12659, LIC12660, LIC12631 and LIC10868, which were amplified and clone
Publicado em: 2009
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11. Serology of flagellar antigens from strains of enteropathogenic Escherichia coli (EPEC) and Shiga Toxin producing E. coli (STEC) isolated from different animals and comparative analysis of the fliC gene by PCR-RFLP. / Sorologia de antígenos flagelares de amostras de Escherichia coli Enteropatogênicas (EPEC) e E. coli produtoras da Toxina de Shiga (STEC) isoladas de diferentes animais e análise comparativa do gene fliC por PCR-RFLP.
The Escherichia coli species consists of a group of typically non-pathogenic bacteria present in the intestinal tract of humans and animals. Strains are serotyped according to their O (somatic), H (flagellar) and K (capsular) surface antigens, in order to distinguish these microorganisms from the non-pathogenic members of the intestinal microbiota. The flage
Publicado em: 2009
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12. Expression of toll-like receptor 2 and neutrophil chemotaxis in Behçet´s disease / Expressão de receptores toll-like 2 e função quimiotáxica de neutrófilos na doença de Behçet
Expressions of toll-like receptor (TLR) 2, TLR4, CD14, CD114 and CD116 were assessed on polymorphonuclear (PMN) neutrophils and monocytes of patients with Behçets disease (BD). PMN chemotactic responses under different stimulations were also measured. The objective was to determine if BD PMN chemotaxis may be overstimulated by lipoteichoic acid (LTA) from g
Publicado em: 2009