Paracoccidioidomicose

The aspects related to the epidemiology, pathogenesis, clinical classification, clinical manifestations and treatment of Paracoccidioidomycosis, are presented. The disease is caused by Paracoccidioides brasiliensis and is the most frequent and the most important systemic mycosis in the South America, specifically in Brazil, Argentina, Colombia and Venezuela. Because of the high frequency of cutaneous-mucosal lesions presented by the patients, the potential severity of the disease and the socio-economic consequences to the patient, it is very important for a drematologist to be qualified to precisely diagnose the disease and render proper care.

IL-12 and neutralization of endogenous IL-10 revert the in vitro antigen-specific cellular immunosuppression of paracoccidioidomycosis patients

Treatment of patients with paracoccidioidomycosis is still a challenge. Patients present defective lymphoproliferation and IFN-γ responses to the main Paracoccidioides brasiliensis antigen (gp43), which correlates with disease severity. Here, we demonstrated that the patients show also a defective synthesis of interleukin (IL)-12. Therefore, we attempted to revert this immune disfunction by adding IL-12 and neutralizing anti-IL-10 antibody to gp-43-stimulated peripheral blood mononuclear cell cultures. Both treatments increased IFN-γ secretion to levels observed with healthy sensitized individuals, but affected proliferation only modestly. When combined, the treatments further increased IFN-γ synthesis and cell proliferation. The addition of suboptimal concentrations of IL-2 also further increased the IL-12-mediated secretion of IFN-γ. Interestingly, the immune modulation was mostly antigen-specific, since the responses to Candida albicans' antigen were not affected. These results suggest that appropriate immune intervention with cytokines and/or anti-cytokines may help in the treatment of PCM. © 2002 Elsevier Science Ltd. All rights reserved.

Doença de Jorge Lobo e sua relação com os antígenos do sistema HLA

Pós-graduação em Doenças Tropicais - FMB

Estudo populacional de Anopheles darlingi utilizando análise de RAPD e seqüenciamento de genes mitocondriais

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Avaliação do teste ELISA durante o tratamento de pacientes com paracoccidioidomicose: comparação com a imunofluorescência indireta e a micro-imunodifusão dupla em gel de ágar

Pós-graduação em Patologia - FMB

Effect of serum sample inactivation on the performance of latex agglutination test for paracoccidioidomycosis serodiagnosis

Paracoccidioidomycosis is diagnosed from the direct observation of the causative agent, but serology can facilitate and decrease the time required for diagnosis. The objective of this study was to determine the influence of serum sample inactivation on the performance of the latex agglutination test (LAT) for detecting antibodies against Paracoccidioides brasiliensis. The sensitivity of LAT from inactivated or non-inactivated samples was 73% and 83%, respectively and the LAT selectivity was 79% and 90%, respectively. The LAT evaluated here was no more specific than the double-immunodiffusion assay. We suggest the investigation of other methods for improving the LAT, such as the use of deglycosylated antigen.

Avaliação da associação sulfametoxazol-trimetropim no tratamento da paracoccidioidomicose experimental murina

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação da bioquímica sanguínea de pacientes com paracoccidioidomicose, tratados com cotrimoxazol ou itraconazol

Pós-graduação em Doenças Tropicais - FMB

Highlights in pathogenic fungal biofilms

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Glycolipid Sensing and Innate Immunity in Paracoccidioidomycosis

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Constituintes Químicos de Hyptidendron canum R. Harley (Lamiaceae)

CHEMICAL CONSTITUENTS OF Hyptidendron canum (Pohl ex Benth.) R. Harley (LAMIACEAE). Chemical investigation of Hyptidendron canum stems resulted in the isolation of betulinic, ursolic and euscaphic acids. From the leaves were isolated 3β-O- β-galactopiranosilsitosterol, ursolic aldehyde, and mixtures of maslinic acid and 2α-hydroxyursolic acid, α and β-amyrin, uvaol and erythrodiol, sitosterol and stigmasterol, spathulenol and globulol. Hexane and chloroform leave fractions as well as ursolic and betulinic acids showed antifungal activities against the yeast form of Paracoccidioides brasiliensis.

Síntese de aminochalconas e análogos arílicos como agentes antivirais, antifúngicos e inibidores de mieloperoxidase

Pós-graduação em Química - IBILCE

Paracoccidioidomycosis in patients with Lymphoma and review of published literature

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Studies of natural killer cells in patients with paracoccidioidomycosis

The number and activity of natural killer (NK) cells were studied in 34 untreated patients with paracoccidioidomycosis, 20 with the chronic form of the disease and 14 with the acute form. NK cells were detected with monoclonal antibody Leu-11c and the cytotoxic activity was measured using a single cell assay against K562 target cells. Both groups of patients had an increased number of circulating NK cells, their cytotoxic activity being significantly lower than in the healthy controls. These findings may be of importance in the immunological disturbances associated with paracoccidioidomycosis since NK cells exert important immune effector functions and may play a role in resistance against Paracoccidioides brasiliensis.

Neutrophil extracellular traps identification in tegumentary lesions of patients with paracoccidioidomycosis and different patterns of NETs generation in vitro

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)