Base de dados : HANSEN
Pesquisa : HANSENIASE VIRCHOWIANA/METAB [Descritor de assunto]
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Texto Completo-en
Id:27124
Autor:Marolia, Jolly; Mahadevan, PR.
Título:Reactive oxygen intermediates inactive Mycobacterium leprae in the phagocytes from human peripheral blood.
Fonte:Int J Lepr;57(2):483-491, June 1989. ^btab.
Resumo:Reactive oxygen intermediates such as hydrogen peroxide, superoxide, and hydroxyl radicals are important microbicidal components, and they could also play a role in an infection with Mycobacterium leprae. A comparative study of the level of hydrogen peroxide and superoxide produced by peripheral blood phagocytes from normal healthy individuals and lepromatous leprosy patients showed a deficiency in superoxide production in the patients. In the phagocytes from normal healthy individuals, there was good release of superoxide ions, and this mediated the killing of M. leprae. The lack of superoxide production allowed the viability of M. leprae inside the macrophages from leprosy patients. This deficiency could be rectified by the use of an immunomodulator, the delipidified cell wall of M. leprae. This modulation resulted in the ability of the patients' phagocytes to respond to M. leprae, to produce reactive oxygen intermediates such as superoxide, and also to kill the bacteria. These observations indicate that delipidified cell wall could have significant potential to positively modulate the immune-deficient cells of leprosy patients.^ien.
Descritores:Hanseníase Virchowiana/metab
Hanseníase Virchowiana/microbiol
Hanseníase Virchowiana/reabil
Mycobacterium leprae/imunol
Mycobacterium leprae/patogen
Superóxido Dismutase/bios
Superóxido Dismutase/metab
Meio Eletrônico:http://hansen.bvs.ilsl.br/textoc/revistas/intjlepr/1989/pdf/v57n2/v57n2a06.pdf - en.
Localização:Br191.1


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Id:18977
Autor:Kiszewski, C. A; Becerril, E; Baquera, J; Aguilar, L. D; Hernández-Pando, R
Título:Expression of transforming growth factor-beta isoforms and their receptors in lepromatous and tuberculoid leprosy
..-
Fonte:s.l; s.n; 2003. 7 p. ilus, tab, graf.
Resumo:Leprosy is an infectious disease with two polar forms, tuberculoid leprosy (TT) and lepromatous leprosy (LL), that are characterized by strong cell-mediated immunity (CMI) and CMI anergy, respectively. Transforming growth factor-beta (TGF-beta) belongs to a family of pleiotropic cytokines (TGF-beta1, TGF-beta2 and TGF-beta3) that participate in the control of cell differentiation and proliferation, as well as tissue repair. This cytokine family is unique because it suppresses CMI. In this study, we compared the expression of the three TGF-beta isoforms and their receptors in skin biopsies from LL and TT patients (LL = 20; TT = 20) using immunohistochemistry and automated morphometry. The percentage of cells immunostained for the three TGF-beta isoforms and cells positive for the three TGF-beta receptors in the inflammatory infiltrate located in the papillary dermis, reticular dermis and periadnexal tissue were significantly higher in LL than that in TT, with macrophages being the most common and strongest immunoreactive cells. Some lymphocytes, fibroblasts, keratinocytes and epithelial cells from sweat glands and hair roots were also positive. In situ reverse-transcription polymerase chain reaction corroborated the capacity of these cells to synthesize TGF-beta1 and TGF-beta receptor 2. This high expression of TGF-beta isoforms and their receptors could contribute to CMI anergy and other clinical characteristic features of leprosy, like skin atrophy. (AU).
Descritores:HANSENIASE VIRCHOWIANA/imunol
HANSENIASE VIRCHOWIANA/metab
HANSENIASE TUBERCULOIDE/imunol
HANSENIASE TUBERCULOIDE/metab
MYCOBACTERIUM LEPRAE
ISOFORMAS DE PROTEINAS
HIBRIDIZACAO IN SITU
RNA MENSAGEIRO/quim
RNA MENSAGEIRO/genet
RECEPTORES DO FATOR DE CRESCIMENTO TRANSFORMADOR BETA/bios
RECEPTORES DO FATOR DE CRESCIMENTO TRANSFORMADOR BETA/imunol
PELE/citol
PELE/imunol
REACAO EM CADEIA POR POLIMERASE VIA TRANSCRIPTASE REVERSA
IMUNOHISTOQUIMICA
BIOPSIA
FATOR DE CRESCIMENTO TRANSFORMADOR BETA/bios
FATOR DE CRESCIMENTO TRANSFORMADOR BETA/genet
FATOR DE CRESCIMENTO TRANSFORMADOR BETA/imunol
Limites:HUMANO
Meio Eletrônico: - .
Localização:BR191.1; 09092/s


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Id:18732
Autor:Castaño Hernández, Santos T; Carrazana Hernández, Gonzalo B.
Título:Alteraciones del metabolismo de los carbohidratos en lepra lepromatosa.
Fonte:Fontilles - Revista de Leprología;17(6):565-573, Sep.-Dic. 1990. tab.
Resumo:Se estudió el metabolismo de los carbohidratos (MC) en 84 casos de lepra lepromatosa de las áreas de salud de la ciudad de Camagüey, Cuba, a principios de 1989. Para evitar interferir en los resultados de la prueba de tolerancia a la glucosa oral (PTG), se excluyeron en este estudio los pacientes con enfermedades agudas, eritema nudoso leproso y los que ingirieron medicamentos orales. Todos los casos fueron sometidos a la PTG oral de acuerdo con las Normas Nacionales de Endocrinología. Para el diagnóstico de obesidad se utilizó el indicador de masa corporal. Los resultados obtenidos mostraron alteraciones del MC en el 7'1 por ciento de los pacientes con lepra lepromatosa; predominio de los casos con PTG alterada en relación con los diabéticos clínicos; así como el sexo masculino (83'3 por ciento) y del grupo de edades entre 56 y 75 años; la mayor parte de los pacientes con alteraciones del MC no resultaron obesos; el 66'7 por ciento de los enfermos negaron antecedentes familiares de diabetes mellitus y el 100'0 por ciento de los casos sólo presentaron dermotopatías. (AU).
Descritores:HANSENIASE VIRCHOWIANA/compl
HANSENIASE VIRCHOWIANA/metab
Localização:BR191.1



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