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Master's Dissertation
DOI
https://doi.org/10.11606/D.5.2011.tde-21072011-135809
Document
Author
Full name
Alvina Clara Felix
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2011
Supervisor
Committee
Ferreira, Antonio Walter (President)
Salomão, Reinaldo
Yasuda, Maria Aparecida Shikanai
Title in Portuguese
Estudo da resposta imunológica de anticorpos IgG, IgM e IgA, subclasses de IgG (IgG1 e IgG3) e avidez de IgG, por Western Blotting, em amostras de soros de pacientes com tuberculose pulmonar e comparação de resultados com métodos microbiológicos e dosagem de interferon-gama
Keywords in Portuguese
Marcadores imunológicos
Mycobacterium tuberculosis
Tuberculose
Western blotting
Abstract in Portuguese
Apesar das recomendações da Organização Mundial da Saúde, na reunião ministerial realizada em Amsterdam, Holanda em 2000, a tuberculose continua em ritmo crescente, atingindo principalmente os países em desenvolvimento e pessoas com o sistema imunológico comprometido, principalmente as infectadas pelo vírus da imunodeficiência adquirida. Os métodos utilizados no diagnóstico continuam os mesmos utilizados por muitos anos, cujas limitações impedem a ação rápida dos programas de saúde que buscam interromper a cadeia de transmissão da doença. Continuando uma linha de pesquisa do Laboratório de Soroepidemiologia e Imunobiologia do IMTSP, utilizando o método do Western Blotting, procuramos neste trabalho ampliar os conhecimentos da resposta imunológica de anticorpos em pacientes com tuberculose pulmonar, clinica e laboratorialmente definida, avaliando a participação das imunoglobulinas IgG, IgA e IgM, subclasses de IgG (IgG1 e IgG3) e a avidez da imunoglobulina IgG em amostras de soros colhidas no início e no final do tratamento. Nossos resultados mostraram que o melhor marcador imunológico foi a imunoglobulina IgG por apresentar melhor desempenho diagnóstico quando comparada com os resultados dos métodos microbiológicos e de dosagem de interferon gama, Quantiferon TB Gold. As frações protéicas que apresentaram melhor desempenho diagnóstico foram as de 38 e 30 KDa
Title in English
Study of the immune response of IgG, IgM and IgA, IgG subclasses (IgG1 and IgG3) and IgG avidity by Western blotting in serum samples collected from patients with pulmonary tuberculosis and comparing results with microbiological methods and gamma interferon determination
Keywords in English
Immunological markers
Mycobacterium tuberculosis
Tuberculosis
Western blotting
Abstract in English
Despite the recommendations of the World Health Organization, during the Ministerial meeting held in Amsterdam, Holland in 2000, tuberculosis continues at an important increasing rate, affecting mostly developing countries and people with severe compromised immune systems, especially those infected with human acquired immunodeficiency virus. The methods used for diagnosis are the same used for many years, whose limitations prevent the rapid action of countries health programs that seek to stop the chain of disease transmission. Continuing a line of research of the Laboratory of Seroepidemiology and Immunobiology of IMTSP using the method of Western blotting, in this study we tried to broaden the knowledge of the immune response of antibodies in patients with pulmonary tuberculosis, clinical and laboratory defined by evaluating the participation of IgG, IgA and IgM, IgG subclasses (IgG1 and IgG3) and immunoglobulin IgG avidity in serum samples collected in the beginning and end of treatment. Our results showed that the immunoglobulin IgG was best immunological marker when compared with the results of microbiological methods and determination of interferon gamma, QuantiFERON TB Gold. The proteins fractions that showed better diagnosis performance were 38 and 30 KDa
 
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Publishing Date
2011-07-22
 
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