Mhc Class Ii
Mostrando 13-24 de 749 artigos, teses e dissertações.
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13. ImunolocalizaÃÃo e alteraÃÃes patolÃgicas induzidas pela infecÃÃo por Strongyloides venezuelensis em camundongos geneticamente deficientes em MHC de classe I ou II
In the present study, we investigated the mechanisms involved in the immune response of Major Histocompatibility Complex class I or class II knockout mice (MHC I-/- or MHC II-/-), after S. venezuelensis infection. Wild-type C57BL/6 (WT), MHC II -/- and MHC I -/- mice were individually inoculated with 3.000 larvae (L3) of Strongyloides venezuelensis and sacri
Publicado em: 2007
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14. Genetic susceptibility in leprosy: molecular analysis of HLA classroom II and classroom III. / Suscetibilidade Genética na Hanseníase:análise Molecular de HLA classe II &classe III.
Diversos estudos têm demonstrado a influência da variabilidade genética humana na capacidade de resposta ao M. leprae, agente etiológico causador da hanseníase. Através de diferentes técnicas a genética moderna tem contribuído para a determinação de regiões importantes associadas à doença, dentre elas o cromossomo 6p21, apontando principalmente
Publicado em: 2007
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15. Expression of the receiver for mannose in cells of Schwann and Schwannoma ST88-14. / Expressão do receptor para manose em células de Schwann e Schwannoma ST88-14.
The mannose receptor (MR) is a transmembrane glycoprotein that is expressed in several cell types but little or no information is available on Schwann cells (SC). We show that rodent SC in primary cultures of dissociated cells or explant nerve cultures and a human Schwannoma cell line (ST88-14) bind the exogenous MR ligand neoglycoprotein mannosyl/bovine ser
Publicado em: 2006
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16. Prospective study of immune response in Brazilian children heavily exposed to Streptococcus mutans: influence of specific immune response in infection / Estudo prospectivo da resposta imunologica de crianças brasileiras altamente expostas ao Streptococcus mutans : influencia da especificidade da resposta imune na infeção
Mutans streptococci (MS) are the main pathogens of dental caries. In this study we explored the influence of the muccosal immune system in the initial colonization by MS in children highly exposed to this microorganism. A total of 119 children, who were of 5 to 13 months of age, were enrolled in this prospective study. MS levels of infection were determined
Publicado em: 2006
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17. PRECONDITIONING OF ORGAN DONORS WITH LOW LEVELS OF CARBON MONOXIDE REDUCES GRAFT IMMUNOGENICITY AND IMPROVES LONGTERM ALLOGRAFT FUNCTION
Background: Chronic rejection remains the major obstacle for successful transplantation, and to date there is no effective treatment. Events occurring prior to organ transplantation such as brain death, harvesting procedure, and ischemia-reperfusion injury lead to unspecific inflammatory damages danger signals - that increase graft immunogenicity and reduce
Publicado em: 2005
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18. Caracterização do polimorfismo dos alelos HLA de classe I e nos microssatelites do fator de necrose tumoral em pacientes brasileiros com psoriase vulgar
Introduction - Psoriasis is a genetic chronic inflammatory skin disorder with genes involved in disease predisposition located within the highly polymorphic Major Histocompatibility Complex (MHC) region on the chromosome 6p21.3. The goal of the present study was to identify, evaluate distribution and determine genetic associations of HLA class I genes and Tu
Publicado em: 2005
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19. Modulation of B lymphocyte function by an aqueous fraction of the ethanol extract of Cissampelos sympodialis Eichl (Menispermaceae)
Cissampelos sympodialis Eichl species are used in folk medicine for the treatment of asthma, arthritis and rheumatism. In the present study, we investigated the immunomodulatory effect of an aqueous fraction of a 70% (v/v) ethanol extract of C. sympodialis leaves on B lymphocyte function. The hydroalcoholic extract inhibited the in vitro proliferative respon
Brazilian Journal of Medical and Biological Research. Publicado em: 2003-11
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20. A method for multiple sequential analyses of macrophage functions using a small single cell sample
Microbial pathogens such as bacillus Calmette-Guérin (BCG) induce the activation of macrophages. Activated macrophages can be characterized by the increased production of reactive oxygen and nitrogen metabolites, generated via NADPH oxidase and inducible nitric oxide synthase, respectively, and by the increased expression of major histocompatibility complex
Brazilian Journal of Medical and Biological Research. Publicado em: 2003-09
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21. Expressão das Moléculas de Histocompatibilidade de Classe I e II em Células Linfomonocitárias de Pacientes com Diabetes Mellitus do Tipo 1 Recentemente Diagnosticados. / Expression of histocompatibility class I and II molecules on lymphomononuclear cells of patients with type 1 diabetes mellitus newly diagnosed.
Althougth the role of MHC molecules in the susceptibility to DM1 has not been elucidated, the density of MHC molecules on cell surface may influence the outcome of the immune response. In this study, the number of CD3+, CD4+, CD8+, CD19+ and CD14+ cells coexpressing MHC class I and II, and the correlation between the density of MHC molecules and the immunoge
Publicado em: 1999
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22. Expression of endogenous peptide-major histocompatibility complex class II complexes derived from invariant chain-antigen fusion proteins.
CD4+ T cells recognize major histocompatibility complex (MHC) class II-bound peptides that are primarily obtained from extracellular sources. Endogenously synthesized proteins that readily enter the MHC class I presentation pathway are generally excluded from the MHC class II presentation pathway. We show here that endogenously synthesized ovalbumin or hen e
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23. Human Parainfluenza Virus Type 3 Up-Regulates Major Histocompatibility Complex Class I and II Expression on Respiratory Epithelial Cells: Involvement of a STAT1- and CIITA-Independent Pathway
Human parainfluenza virus type 3 (HPIV3) infection causes severe damage to the lung epithelium, leading to bronchiolitis, pneumonia, and croup in newborns and infants. Cellular immunity that plays a vital role in normal antiviral action appears to be involved, possibly because of inappropriate activation, in the infection-related damage to the lung epitheliu
American Society for Microbiology.
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24. Autoimmunity associated with TGF-beta1-deficiency in mice is dependent on MHC class II antigen expression.
The progressive inflammatory process found in transforming growth factor beta1 (TGF-beta1)-deficient mice is associated with several manifestations of autoimmunity, including circulating antibodies to nuclear antigens, immune complex deposition, and increased expression of both class I and class II major histocompatibility complex (MHC) antigens. The contrib