2013-05-082013-05-082010CARNEIRO, Clivia Maria Moraes de Oliveira. Imunomarcação tecidual para o fator XIIIa+ em dendrócitos dérmicos de lesões cutâneas com doença de Jorge Lobo. 2010. 104 f. Dissertação (Mestrado) - Universidade Federal do Pará, Núcleo de Medicina Tropical, Belém, 2010. Programa de Pós-Graduação em Doenças Tropicais.https://repositorio.ufpa.br/handle/2011/3817Jorge Lobo's disease (DJL) is a deep fungal infection caused by Lacazia loboi which mainly affects males farmers, with the clinical form keloid and location of the lower limbs. The highest incidence is found in the Brazilian Amazonia. There are few reports on immune tissue lesions of patients. This study aims to evaluate a possible role in the pathogenesis of the disease by factor XIIIa dermal dendrocytes (FXIIIa DD) in skin lesions, using the technique of immunohistochemistry. 33 skin biopsies were analyzed from patients with DJL. The control group consisted of 10 normal skin biopsies originating from patients without dermatological diseases and 61 biopsies from patients with paracoccidioidomycosis (PCM). The results obtained by records analyzing patients' revealed that DJL affects mainly men (84.8%), farmers (72.7%) with 46-65 years old (51.5%), coming from the northeastern Pará state (51.5%) with clinical form keloid (81.8%) and predominant location of lesions in the lower limbs (45.5). The values of the count of FXIIIa DD in skin lesions of DJL were not affected by variations in gender, age, occupation, origin, clinical manifestation and localization of lesions. The amount of FXIIIa DD in patients with DJL was higher than that found in the control group of patients with healthy skin and in the group of patients with PCM to both the histopathology of loose granuloma (GF) and organized granuloma (GBO). Because of FXIIIa DD be considered precursors of Langerhans cells (LCs) can be suggested that their increase in DJL reflects a reservoir for the LCs and transform them time and again, don’t allowing their decrease. It has been demonstrated the increase in the levels of Th2 cytokines (TGF-β) in the DJL, and the increase of FXIIIa DD that is able to secrete the factor TNF-α, observed in this study, shows a dominance of Th1. Whereas there is a co expression of cytokine profiles of both, the study suggests the existence of mixed patterns. So, the results obtained in this work suggest that DJL is a spectral disease, with a tendency of resistance or susceptibility. What might explain the existence of focal cases even with long duration of disease and disseminated cases like early manifestation of DJL.porAcesso AbertoAmazônia brasileiraLobomicoseDendrócito dérmicoFator XIIIaAlergia e imunologiaDoença granulomatosa crônicaDissertaçãoCNPQ::CIENCIAS BIOLOGICAS::IMUNOLOGIACNPQ::CIENCIAS DA SAUDE::MEDICINA::CLINICA MEDICA::DERMATOLOGIA