Alloantigens
Mostrando 1-12 de 140 artigos, teses e dissertações.
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1. Avaliação clínica, histológica e imunológica de enxertos ósseos alógenos fresco-congelados utilizados como técnica na preservação de rebordo alveolar pós-extração / Preservation of alveolar bone in extraction sockets using fresh-frozen bone allograft: a clinical, histological and immunological study
The fresh-frozen bone allograft (FFBA) is an alternative to surgical procedures of bone grafts, mainly in the preservation of alveolar ridge prior the installation of osseointegrated implants. However there are paradigms that surround the relation between immune response to alloantigens present inside the graft and the clinical response of the graft. An atte
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/09/2011
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2. Human neutrophil alloantigens systems
Os aloantígenos de neutrófilos estão associados a várias condições clínicas como neutropenias imunes, insuficiência pulmonar relacionada à transfusão (TRALI), refratariedade à transfusão de granulócitos, e reações transfusionais febris. Na última década, foi observado considerável progresso na caracterização dos aloantígenos envolvidos n
Anais da Academia Brasileira de Ciências. Publicado em: 2009-09
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3. Modulação da resposta imune a aloantígenos por células-tronco derivadas do tecido adiposo / Modulation of Immune alloresponse by Adiposetissue Derived Mesenchymal Stem Cells
The identification and characterization de regulatory T cells that can control immune responsiveness to alloantigens opened up opportunities for new therapies in transplantation. After exposure to alloantigens in vivo, antigen-specific immunoregulatory activity is enriched in a population of CD4+ T cells that express high levels of CD25 and Foxp3. Adipose ti
Publicado em: 2009
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4. Induction of oral tolerance and the effect of interleukin-4 on murine skin allograft rejection
We studied the effect of oral and portal vein administration of alloantigens on mouse skin allograft survival. Graft receptor BALB/c mice received spleen cells (30, 90, 150 or 375 x 10(6)) from donor C57BL/6 mice intragastrically on three successive days, starting seven days before the skin graft. Allograft survival was significantly increased with the feedi
Brazilian Journal of Medical and Biological Research. Publicado em: 2004-03
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5. The role of CD8+ T cells during allograft rejection
Organ transplantation can be considered as replacement therapy for patients with end-stage organ failure. The percent of one-year allograft survival has increased due, among other factors, to a better understanding of the rejection process and new immunosuppressive drugs. Immunosuppressive therapy used in transplantation prevents activation and proliferation
Brazilian Journal of Medical and Biological Research. Publicado em: 2002-11
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6. Estudo dos polimorfismos dos sistemas de aloantigenos plaquetarios humanos (HPA) em doenças hemorragicas e tromboticas
Human platelet alloantigens (HP A) are polymorphic sequencies of the platelet membrane glycoproteins, which are associated to immune platelet disorders, such as neonatal alloimmune thrombocytopenia (NAIT), post-transfusion purpura (PTP), platelet transfusion reftactoriness and may be to related to occlusive vascular disease. Several distinct biallelic system
Publicado em: 2000
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7. Lymphocytes alloantigens associated with X-chromosome-linked immune response genes.
A new polymorphic alloantigen system controlled by loci on the X-chromosome has been identified by using antisera from F1 hybrid mice differing in their X-chromosome. These alloantigens are associated with the X-chromosome. These alloantigens are associated with the X-linked immune response genes controlling the immune response to the so-called "thymus indep
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8. Polymorphism of human B-cell alloantigens: evidence for three loci within the HLA system.
The B-cell alloantigens of an HLA-DR3-homozygous, MB2-homozygous, MT2-positive lymphoblastoid cell line were studied by two-dimensional gel electrophoresis. Analysis of gel patterns suggested assignment of the HLA-DR3 determinant to the larger (35,000-dalton) subunit (alpha) of the B-cell alloantigen. MB2 was found to be either a determinant on the small (27
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9. Specific human B lymphocyte alloantigens linked to HL-A.
Sera, previously found to react specifically with B lymphoid cultured cells, were tested on isolated T and B peripheral blood lymphocytes in a microcytotoxicity assay. Studies were performed on lymphocytes obtained from several large Amish families. The sera used in these studies were cytotoxic to peripheral blood, B lymphocytes, but not cytotoxic to T lymph
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10. Neonatal tolerance to alloantigens alters major histocompatibility complex-restricted response patterns.
Male-specific transplantation antigen (H-Y)-immune cytotoxic T cells of some individual CBA/H mice exhibit lytic activity on male and female allogeneic targets (e.g., H-2b). Neonatal tolerance to H-2b abrogates the ability of CBA mice to generate secondary H-Y-immune cytotoxic T cells, but such cell activity to third-party alloantigens and to Bebaru and infl
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11. Hybrid Antibody-Induced Topographical Redistribution of Surface Immunoglobulins, Alloantigens, and Concanavalin A Receptors on Mouse Lymphoid Cells
Redistribution of surface immunoglobulins, H-2b, Thy-1.2, and TL.1,2,3 alloantigens, and concanavalin A receptors on mouse lymphoid cells induced by hybrid rabbit F(ab′)2 antibody (anti-mouse immunoglobulin/anti-visual marker or anti-concanavalin A/anti-visual marker) was studied by immunofluorescence. When used directly to label surface immunoglobulin, an
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12. Chemical characterization of murine Ia alloantigens determined by the i-E/i-C subregions of the H-2 complex.
Alloantisera directed against the alloantigens determined by the I-E and I-C subregions of the murine major histocompatibility complex precipitate two components that have molecular weights of 35,000 and 29,000. These components, when analyzed by partial NH2-terminal sequencing, show no homology to two components of similar size determined by the I-A subregi