Sequential IL-23 and IL-17 and increased Mmp8 and Mmp14 expression characterize the progression of an experimental model of periodontal disease in type 1 diabetes

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

Molecular mechanisms of the induction of IL-12 and its inhibition by IL- 10

Exogenously added IL-10 rapidly inhibited Staphylococcus aureus- or LPS- induced cytokine mRNA expression in human PBMCs and monocytes, with a maximal effect observed when IL-10 was added from 20 h before until 1 h after the addition of the inducers. Nuclear run-on assays revealed that the inhibition of IL-12 p40, IL-12 p35, and TNF-α was at the gene transcriptional level and that the addition of IL-10 to S. aureus- or LPS-treated PBMCs did not affect mRNA stability. The inhibitory activity of IL-10 was abrogated by cycloheximide (CHX), suggesting the involvement of a newly synthesized protein(s). The addition of CHX at 2 h before S. aureus or LPS also inhibited the accumulation of IL-12 p40 mRNA, but did not inhibit IL-12 p35 and TNF-α mRNA. This finding suggests that p40 transcription is regulated through a de novo synthesized protein factor(s), whereas the addition of CHX at 2 h after S. aureus activation caused superinduction of the IL-12 p40, IL-12 p35, and TNF-α genes. These results indicate that in human monocytes, the mechanism(s) of IL-10 suppression of both IL-12 p40 and IL-12 p35 genes is primarily seen at the transcriptional level, and that the induction of the IL-12 p40 and p35 genes have different requirements for de novo protein synthesis.

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.

Efeito da IL-15 sobre a atividade fungicida de neutrófilos humanos contra Paracoccidioides brasiliensis

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Síntese e caracterização dos vidros teluretos do sistema (20-x)Li2O-80TeO2-xWO3

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Análise integrada aplicada ao mapeamento geológico-geotécnico na escala de 1:20.000 da estrada de Castelhanos, Ilhabela - SP

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Foraminíferos atuais em um manguezal impactado por petróleo 20 anos atrás: o Rio Iriri, canal de Bertioga, Santos-SP

Pós-graduação em Geociências e Meio Ambiente - IGCE

Expressão de IL-18 por PCR em tempo real em membranas corioamnióticas de gentantes com rotura prematura de membrans pré-termo

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Análise quantitativa da expressão de IL-4 e IL-10 em membrans corioamnióticas de gestantes com rotura prematura de membranas pré-termo

Pós-graduação em Patologia - FMB

Estudo termoanalítico e eletroquímico das reações em estado sólido na interfase metálica dos sistemas Pt-Rh/Hg, empregando a liga de composição Pt-Rh 80:20% (m/m)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Cetoprofeno e expressão de citocinas TNF-alfa e IL-1 após hemorragia aguda em ratos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Influência do consumo crônico de etanol 20% na doença periodontal induzida em ratas com deficiência estrogênica

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

cis-Jasmone e Tween 20 na indução de metabólitos secundários em soja e seus efeitos em insetos-praga

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Ascensão e queda do gabinete de 20 de novembro de 1827 (1827-1829)

Pós-graduação em História - FCHS

Níveis de TNF-alfa, IL-4 e IL-10 no baço e no fígado de cães naturalmente infectados por Leishmania (Leishmania) chagasi

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)