the human leukocyte antigen g (hla-g) molecule exhibits limited tissue distribution, low polymorphism and alternative splicings that generate seven hla-g isoforms. hla-g exerts multiple immunoregulatory functions. recent studies indicate an ectopic up-regulation in tumor cells that may favor their escape from anti-tumor immune responses. this study it is an effort to clarify the presence of hla...

BACKGROUND Allogeneic hematopoietic cell transplantation is the main curative therapy for patients with chronic myeloid leukemia who do not respond to tyrosine kinase inhibitors. It has been proposed that non-human leukocyte antigen gene polymorphisms influence outcome after hematopoietic cell transplantation and could be used alongside traditional patient-donor and transplant characteristics t...

The importance of CD8(+) cytolytic T cells for protection from viral infection and in the generation of immune responses against tumors has been well established. In contrast, the role of CD4(+) T-helper cells in human infection and in cancer immunity has yet to be clearly defined. In this pilot study, we show that immunization of three resected, high-risk metastatic melanoma patients with a T-...

When comparing with dialysis treatment for end stage renal disease patients, transplant proffers significant survival and quality of life benefits. However, all-inclusive rates transplantation still remain less those patients who are highly sensitized to human leukocyte antigen due their previous transplantation, blood transfusions or pregnancy. The approach such candidates has emerged substant...

Allograft rejection is a significant cause of renal transplant failure which needs prompt diagnosis and treatment for graft salvage. Angiotensin II type 1 receptor antibody-mediated (AT1R-AMR) increasingly being identified as the etiology in kidney recipients with allograft but without detectable human leukocyte antigen (HLA) antibodies. While some reports have suggested that AT1R-AMR may be re...

OBJECTIVE To analyze the frequency of human leukocyte antigens class II-DR in children and adolescents with systemic lupus erythematosus. PATIENTS AND METHODS Fifty-fiveBrazilian systemic lupus erythematosus children and adolescents and 308 healthy individuals were studied. Gender, race, and age of onset of systemic lupus erythematosus were recorded. The human leukocyte antigens typing of cla...

Cytotoxic T lymphocytes (CTLs) may play a role in host defence against hepatitis C virus (HCV) infection, and HCV-specific CTL epitopes may be included in vaccines to induce protective CTLs. We identified three new epitopes within the HCV nucleoprotein recognized by CTLs. HCV nucleoprotein residues 28-37 are the minimal epitope recognized by CTLs in association with the class I human leukocyte ...