Base de dados : HANSEN Pesquisa : FATOR DE NECROSE TUMORAL/GENET [Descritor de assunto] Referências encontradas : 2 [refinar] Mostrando: 1 .. 2   no formato [Detalhado]

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Id: 18946 Autor: Teles, Rosane M. B; Moraes, Milton O; Geraldo, Natasha T. R; Salles, Ana M; Sarno, Euzenir N; Sampaio, Elizabeth P Título: Differential TNFalpha mRNA regulation detected in the epidermis of leprosy patients ..- Fonte: s.l; s.n; 2002. 8 p. ilus, tab, graf. Resumo: The epidermis is an important site of the immunoinflammatory response in the skin. In the present study, the expression of cytokine and ICAM-1 (intercellular adhesion molecule-1) genes was evaluated by RT-PCR in the epidermis isolated from biopsies from 25 reactional leprosy patients. TNFalpha and IL-6 mRNAs were detected in all individuals during the reactional state (reversal reaction or erythema nodosum leprosum), IL-8 message was detected in 66.6 per cent and 62.5 per cent of the patients, IL-12 mRNA was present in 91.6 per cent and 62.5 per cent and ICAM-1 in 100 per cent and 71.4 per cent, respectively. In addition, when skin biopsies were obtained from the same patients before and during the reactional episode, an enhancement in cytokine mRNA, but not in ICAM-1 mRNA, was observed. Seven patients were also evaluated at the onset of reaction and during antiinflammatory treatment. In contrast to a preferential decrease in the TNFalpha gene detected in the dermis, during the treatment phase, persistent/enhanced TNFalpha mRNA expression was detected in the epidermis in six out of the seven patients assessed. This peculiar pattern of expression might reflect a differential impact that in vivo antiinflammatory therapy has on the epidermis. The present findings indicate that the epidermis plays an important role in the local inflammatory response in leprosy and that the profile of response detected in the epidermis during the reactions may be regulated differently from that in the dermis. (AU). Descritores: CITOCINAS/genet CITOCINAS/metab ANTIINFLAMATORIOS ESTERÓIDES/uso terap DERME/metab HANSENOSTATICOS/uso terap EPIDERME/metab MOLECULA 1 DE ADESAO INTERCELULAR/genet MOLECULA 1 DE ADESAO INTERCELULAR/metab HANSENIASE/quimioter HANSENIASE/metab PENTOXIFILINA/uso terap ANTIINFLAMATORIOS/uso terap RNA MENSAGEIRO/metab TALIDOMIDA/uso terap PREDNISONA/uso terap FATOR DE NECROSE TUMORAL/genet FATOR DE NECROSE TUMORAL/metab Limites: HUMANO MASCULINO FEMININO ADULTO MEIA-IDADE IDOSO SUPPORT, NON-U.S. GOV'T Meio Eletrônico: - . Localização: BR191.1; 09157/s

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Id: 18507 Autor: Mira, M. T; Alcais, A; Pietrantonio, T. di; Thuc, N. V; Phuong, M. C; Abel, L; Schurr, E Título: Segregation of HLA/TNF region is linked to leprosy clinical spectrum in families displaying mixed leprosy subtypes ..- Fonte: s.l; s.n; 2003. 7 p. ilus, tab, graf. Resumo: Each year an estimated 600000 new leprosy cases are diagnosed worldwide. The spectrum of the disease varies widely from limited tuberculoid forms to extensive lepromatous forms. A measure of the risk to develop lepromatous forms of leprosy is provided by the extent of skin reactivity to lepromin (Mitsuda reaction). To address a postulated oligogenic control of leprosy pathogenesis, we investigated in the present study linkage of leprosy susceptibility, leprosy clinical subtypes, and extent of the Mitsuda reaction to six chromosomal regions carrying known or suspected leprosy susceptibility loci. The only significant result obtained was linkage of leprosy clinical subtype to the HLA/TNF region on human chromosome 6p21 (P(corrected)=0.00126). In addition, we established that within the same family different HLA/TNF haplotypes segregate into patients with different leprosy subtypes directly demonstrating the importance of this genome region for the control of clinical leprosy presentation. (AU). Descritores: CROMOSSOMOS HUMANOS PAR 6/genet PREDISPOSICAO GENETICA PARA DOENÇA GENOTIPO HANSENIASE/clas HANSENIASE/genet ANTIGENOS HLA/genet LIGACAO (GENETICA)/genet FATOR DE NECROSE TUMORAL/genet - FENOTIPO  LINHAGEM Limites: HUMANO MASCULINO FEMININO SUPPORT, NON-U.S. GOV'T Meio Eletrônico: - . Localização: BR191.1; 09137/s

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