Antibody Avidity
Mostrando 1-12 de 143 artigos, teses e dissertações.
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1. Passive acquisition of anti-Staphylococcus aureus antibodies by newborns via transplacental transfer and breastfeeding, regardless of maternal colonization
OBJECTIVE: To investigate the transmission of anti-Staphylococcus aureus (Sa) IgG, IgG1 and IgG2 via placental transfer and the transfer of IgA via the colostrum according to maternal Sa carrier status at delivery. METHODS: We evaluated anti-Sa IgG, IgG1 and IgG2 in maternal and cord sera and IgA in colostrum from a case (n=49, Sa+) and a control group (n=
Clinics. Publicado em: 2016-12
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2. Seroepidemiological analysis of toxoplasmosis in college students
Background Toxoplasmosis is a zoonosis caused by an obligate intracellular parasite, Toxoplasma gondii, which affects warm-blooded animals including humans. Its prevalence rates usually vary in different regions of the planet. Methods In this study, an analysis of the seroprevalence of toxoplasmosis among Brazilian students was proposed by means of IgG spec
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 03/03/2015
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3. Avidity in toxoplasmosis: standardization of pH as chaotrope for low avidity antibodies direct quantification / Avidez de IgG na Toxoplasmose: padronização do pH como caotrópico para quantificação direta de anticorpos de baixa avidez
A toxoplasmose é uma protozoose altamente prevalente que atinge pelo menos um bilhão de indivíduos no mundo. A infecção causada pelo Toxoplasma gondii é benigna e assintomática, mas pode causar perdas visuais ou morte em fetos e pacientes imunossuprimidos. Isto pode ser controlado com diagnóstico e instituição de tratamento, mas depende da determin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/07/2011
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4. Análise cinética da resposta imune humoral contra a proteína recombinante SAG2A em pacientes com Toxoplasmose aguda
Proteínas recombinantes de Toxoplasma gondii têm sido utilizadas em diversos modelos experimentais, assim como para o diagnóstico sorológico da infecção humana por este parasito, principalmente com o intuito de diferenciar as fases aguda e crônica da toxoplasmose. Neste estudo, foi avaliada a cinética dos anticorpos IgM, IgA ,IgG e subclasses (IgG1 e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/03/2011
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5. Pattern of functional antibody activity against Haemophilus influenzae type b (Hib) in infants immunized with diphtheria-tetanus-pertussis/Hib Brazilian combination vaccine
We evaluated the functional activity of Haemophilus influenzae B (Hib) antibodies elicited in a group of infants immunized with the diphtheria-tetanus-pertussis vaccine combined with an Hib vaccine produced totally in Brazil after technological transfer of Hib vaccine production from Glaxo SmithKline, Belgium. Blood samples from immunized infants (N = 985) w
Brazilian Journal of Medical and Biological Research. Publicado em: 06/11/2009
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6. Salivary anti-PGL IgM and IgA titers and serum antibody IgG titers and avidities in leprosy patients and their correlation with time of infection and antigen exposure
The present work proposed to correlate serum antibody avidity and salivary antibody titers as parameters for time of infection and antigen exposure in a co-hort study evaluating leprosy patients in different periods of treatment. Colorimetric enzyme-immunoassays for salivary antibodies, serum antibody IgG titers and avidities were performed in the samples. A
Brazilian Journal of Infectious Diseases. Publicado em: 2007-04
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7. Níveis e avidez de anticorpos IgG específicos para a porção de 19kDa da região C-terminal da proteína-1 de superfície de merozoítos de P. vivax (MSP1 19) em grupos populacionais expostos à malária / Level and avidity of specific IgG antibodies to C-terminal 19kDa of Plasmodium vivax merozoite surface protein 1 (MSP119) in population groups exposed to malaria
The aim of this work was to study the level and avidity of IgG antibodies specific to Plasmodium vivax using the recombinant protein corresponding to 19kDa C-terminal of the merozoite surface protein 1 region (PvMSP119) in individuals living in distinct malaria endemic areas, using ELISA test. Thus, samples from individuals exposed to malaria, with patent in
Publicado em: 2007
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8. AvaliaÃÃo do antÃgeno SAG2a recombinante de Toxoplasma gondii como um potencial marcador diagnÃstico para Toxoplasmose humana aguda
Recombinant proteins have been used for the serological diagnosis of Toxoplasma gondii infection to differentiate between the acute and chronic phases of toxoplasmosis. In this study, we evaluated the reactivity of IgG and IgG1 antibodies by immunoassays in acute and chronic phase sera from patients with toxoplasmosis against two recombinant antigens cloned
Publicado em: 2007
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9. Avaliação do antígeno SAG2a recombinante de Toxoplasma gondii como um potencial marcador diagnóstico para Toxoplasmose humana aguda
Proteínas recombinantes têm sido utilizadas para o diagnóstico sorológico da infecção por Toxoplasma gondii para diferenciar entre as fases aguda e crônica da toxoplasmose. Neste estudo, foi avaliada a reatividade de anticorpos IgG e IgG1 através de imunoensaios em soros de pacientes com toxoplasmose aguda e crônica dirigidos contra dois antígenos
Publicado em: 2007
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10. Identificação e caracterização de peptídeos miméticos dos antígenos de Mycobacterium leprae por phage display
CHAPTER I: Leprosy presents a clinical spectrum that spans from a strong cellular mediated immunity and bacili growth control of Mycobacterium leprae at the tuberculoid pole to a poor T cell immunity with extensive bacterial load at the lepromatous pole. The antigenic profile characterization in both clinical forms is a necessary step for discover and evalua
Publicado em: 2007
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11. Avaliação de frações hidrofóbicas e hidrofílicas de brucella abortus em ensaios imunoenzimáticos para caracterizar o perfil de anticorpos produzidos por bovinos vacinados e não-vacinados
Brucella abortus hydrophobic and hydrophilic fractions obtained from smooth lipopolysaccharide (S-LPS) and Triton X-114 extractions, respectively, were evaluated in immunoassays in order to characterize the antibody response of B. abortus S19 vaccinated heifers and non-vaccinated seropositive cows. Indirect enzyme immunoassays (iELISAs) using Protein A or an
Publicado em: 2006
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12. Utilidade da determinação da avidez dos anticorpos IgG anti-citomegalovirus humano (HCMV) para o imunodiagnostico da citomegalovirose
The infection caused by human cytomegalovirus (HCMV) is generally asymptomatic or is associated with mild non-specific clinical symptoms in immunocompetent subjects. The virus can, however, cause serious illness in congenitally infected infants and in immunocompromised patients. The serological diagnosis of a recently acquired HCMV infection is usually based
Publicado em: 2003