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Avaliação funcional de fagócitos em imunodeficiências com manifestações cutâneas / Functional phagocyte evaluation in immunodeficiencies with cutaneous manifestations
São Paulo; s.n; 2010. [182] p. tab, ilus.
Thesis in Portuguese | LILACS | ID: lil-579183
RESUMO
A pele e as mucosas constituem as primeiras barreiras na defesa contra infecções e os macrófagos são componentes essenciais do sistema imune inato, importante neste aspecto. O envolvimento destas células pode ser verificado em grande percentual das imunodeficiências primárias. Desta forma, a avaliação da função fagocitária é de extrema relevância para o reconhecimento dos distúrbios imunológicos que acometem a pele. O objetivo do presente estudo foi avaliar a metodologia laboratorial para a detecção de defeitos funcionais dos fagócitos. Para isto foram estabelecidos os seguintes testes laboratoriais Nitro Blue Tetrazolium (NBT), Dihidrorodamina (DHR), quimiotaxia, fagocitose e a aderência de S. aureus e C. albicans por citometria de fluxo (CF), além de morte intracelular de S. aureus e C. albicans (CF). Para verificar a integridade do sistema complemento realizou-se ensaios hemolíticos para as vias clássica e alternativa (CH50 e AP50). A metodologia proposta foi aplicada em indivíduos normais para a padronização dos testes. O burst oxidativo avaliado pelo teste da dihidrorodamina (DHR) foi aplicado em 101 indivíduos saudáveis e em paralelo, 50 indivíduos sadios para o teste do NBT. Os mesmos testes foram realizados em pacientes com Candidíase mucocutânea crônica (CMC) (n=9 ), Candidíase persistente (n=5), Suspeita de distúrbios de fagócitos (SDF) (n=14), Doença Granulomatosa Crônica (DGC)(n= 7) e portadores de DGC (n=5)...
ABSTRACT
Skin and mucosa are part of the first barriers in the defense against infections, and the macrophages are essential components of the innate immune system, important when related to this aspect. The involvement of these cells can be seen in a large percentage of the primary immunodeficiencies. Therefore, the assessment of the phagocitary function is extremely important for the recognition of immunological disorders which affect the skin. The present study focus on the evaluation of the laboratorial methodology for the detection of functional defects of phagocytes. For this the following laboratorial tests were established Nitro Blue Tetrazolium (NBT), chemotaxis, phagocytosis and adherence of S. aureus and C. albicans through flow cytometry (FC), besides the intracellular death of S. aureus and C. albicans (FC). To assess the integrity of the complement system hemolytic assays were performed for the classic and alternative pathways (CH50 and AP50). The proposed methodology was applied to normal individuals for the standardization of the assays. The oxidative burst evaluated through the dihydrorodamine essay (DHR) was applied to 101 healthy individuals and in parallel, 50 healthy individuals for the NBT assay. The same assays were performed on patients with Chronic mucocutaneous candidiasis (CMC)(n=9), persistent candidiasis (n=5), Phagocytes disorders suspicious (PDS) (n=14), Chronicle granulomatous disease (CGD)(n=7) and CGD carriers (n=5). Chemotaxis was standardized using 34 controls for neutrophils stimulated by lipopolisacharydes from e. coli (LPS) and 5 by C. albicans...
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Phagocytes / Phagocytosis / Candidiasis, Chronic Mucocutaneous / Granulomatous Disease, Chronic Limits: Humans Language: Portuguese Year: 2010 Type: Thesis

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Full text: Available Index: LILACS (Americas) Main subject: Phagocytes / Phagocytosis / Candidiasis, Chronic Mucocutaneous / Granulomatous Disease, Chronic Limits: Humans Language: Portuguese Year: 2010 Type: Thesis