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Previous issue date: 2012-08-31 / The present study aimed at analyzing histomorphometric, immunohistochemical and clinical features of oral lesions of paracoccidioidomycosis. The sample comprised 50 medical charts and 50 paraffinized blocks of biopsed specimens of oral leisons, both from paracoccidioidomycosis patients diagnosed at Stomatology Department of Hospital S?o Lucas, PUCRS from 1977 to 2010. Data regarding disease duration, and size and number of oral lesions, as well as erythrocytes, leukocytes, lymphocytes, hematocrit, hemoglobin and erythrocyte sedimentation rate, were collected from medical charts. Histological cuts were obtained from the paraffinized specimens and subjected to hematoxylin and eosin (H&E), Gomori-Grocott and immunohistochemical staining. The sample was classified according to the density of granulomas, and the variables number and diameter of fungi, number and diameter of buds, and IL-2, TNF-alpha and IFN-gamma expression were analyzed and correlated. Bud diameter was significantly greater in intermediate density granulomas compared to higher density granulomas. The other variables (bud number, number and diameter of fungi, expression of IL-2, TNF-alpha and IFN-gamma, and clinical and hematological features) did not significantly change with the density of granulomas. There was a positive correlation between bud number and fungal cell number (r=0.834), bud diameter and fungal cell diameter (r=0.496), erythrocytes and number of fungi (r=0.420), erythrocytes and bud number (r=0.408), and leukocytes and bud number (r=0.396). Negative correlation occurred between number and diameter of fungal cells (r=-0.419), bud diameter and granuloma density (r=-0.367), TNF-alpha expression and number of fungal cells (r=-0.372), TNF-alpha expression and bud number (r=-0.300). Histological, immunological and clinical characteristics of oral lesions of chronic paracoccidioidomycosis did not differ significantly between patients in our sample. TNF-alpha levels in oral lesions were inversely correlated with intensity of infection. / O presente estudo teve por objetivo analisar caracter?sticas histomorfom?tricas, imunoistoqu?micas e cl?nicas de les?es orais da paracoccidioidomicose. A amostra foi composta por 50 prontu?rios e 50 blocos de parafina contendo esp?cimes biopsiados de les?es orais, ambos provenientes de pacientes portadores de paracoccidioidomicose diagnosticados no Servi?o de Estomatologia do Hospital S?o Lucas da PUCRS no per?odo compreendido entre os anos de 1977 e 2010. Informa??es sobre tempo de evolu??o da doen?a, n?mero e tamanho das les?es orais, bem como contagem de eritr?citos, leuc?citos, linf?citos, hemat?crito, hemoglobina e eritrossedimenta??o foram coletadas dos prontu?rios dos pacientes. Cortes histol?gicos obtidos a partir dos esp?cimes em parafina foram submetidos ?s colora??es de hematoxilina e eosina (H&E), Gomori-Grocott e processamento imunoistoqu?mico. As amostras foram agrupadas de acordo com a intensidade de compacta??o do granuloma, e as vari?veis n?mero de fungos, n?mero de brotamentos, di?metro dos fungos, di?metro dos brotamentos, express?o imunoistoqu?mica de IL-2, TNF-alfa e IFN-gama foram avaliadas e correlacionadas. O di?metro dos brotamentos foi significativamente maior nos granulomas de compacta??o intermedi?ria quando comparados aos granulomas de maior compacta??o. As demais vari?veis (n?mero de brotamentos, n?mero e di?metro dos fungos, express?o de IL-2, TNF-alfa e IFN-gama, caracter?sticas cl?nicas e hematol?gicas) n?o exibiram altera??o significativa de acordo com o grau de compacta??o dos granulomas. Foi observada correla??o positiva entre n?mero de brotamentos e n?mero de fungos (r=0.834); di?metro dos brotamentos e di?metro do fungo (r=0.496); eritr?citos e n?mero de fungos (r=0.420); eritr?citos e n?mero de brotamentos (r=0.408); leuc?citos e n?mero de brotamentos (r=0.396). A correla??o negativa ocorreu entre di?metro e n?mero de fungos (r=-0.419); di?metro dos brotamentos e compacta??o do granuloma (r=-0.367); express?o de TNF-alfa e n?mero de fungos (r=-0.372); express?o de TNF-alfa e n?mero de brotamentos (r=-0.300). As caracter?sticas histol?gicas, imunol?gicas e cl?nicas das les?es orais da paracoccidioidomicose cr?nica n?o diferiram significativamente entre os pacientes da amostra avaliada. Os n?veis de TNF-alfa nas les?es orais est?o inversamente relacionados ? intensidade da infec??o.
| Identifer | oai:union.ndltd.org:IBICT/oai:tede2.pucrs.br:tede/1182 |
| Date | 31 August 2012 |
| Creators | Silva, Mariana ?lvares de Abreu e |
| Contributors | Cherubini, Karen |
| Publisher | Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Programa de P?s-Gradua??o em Odontologia, PUCRS, BR, Faculdade de Odontologia |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | Unknown |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da PUC_RS, instname:Pontifícia Universidade Católica do Rio Grande do Sul, instacron:PUC_RS |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | -8096554818733665164, 500, 600, 4673435736271820140 |
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