The basis for strong immunogenetic associations between particular human leukocyte antigen (HLA) class I allotypes and inflammatory conditions like Behçet's disease (HLA-B51) and ankylosing spondylitis (HLA-B27) remain mysterious. Recently, however, even stronger HLA associations are reported in drug hypersensitivities to the reverse-transcriptase inhibitor abacavir (HLA-B57), the gout prophyla...

PURPOSE To determine the frequency of abnormalities in human leukocyte antigen (HLA) and antigen processing machinery (APM) component expression in malignant brain tumors. This information may contribute to our understanding of the immune escape mechanisms used by malignant brain tumors because HLA antigens mediate interactions of tumor cells with the host's immune system. EXPERIMENTAL DESIGN...

background: behcet syndrome is a recurrent inflammatory disorder that frequently involves the ocular system. the purpose of this study was to determine the frequency of ocular involvement in cases of behcet's disease in babol, north of iran. methods: from april 2003 to december 2009, 100 cases of behcet's disease who were admitted at the department of ophthalmology and internal medici...

A reverse hemolytic plaque-forming cell (PFC) assay for the enumeration of immunoglobulin-(Ig)secreting cells in nonimmunized rabbits was developed by using erythrocytes coated with anti-Ig antibody. These indicator cells lysed after reacting with the secreted Ig antigen and complement. The anti-Ig antibodies used were specific for the b4 or b5 allotypic specificities, which are antigenic deter...

We investigated the ability of recombinant human gamma-interferon (rhIFN-gamma) to induce class II HLA antigen expression on human conjunctival fibroblasts in cell culture. Cultures were established by explanting subconjunctival tissue from normal donor globes. Fibroblasts were treated with rhIFN-gamma at concentrations ranging from 1 to 500 units/ml and incubated for 1, 3 and 6 days. HLA antig...

PURPOSE Malignant transformation of cells is frequently associated with abnormalities in the human leukocyte antigen (HLA) expression. These abnormalities may play a role in the clinical course of the disease, because HLA antigens mediate interactions of tumor cells with T cells and natural killer cells. Uveal melanoma is a highly malignant tumor of the eye and is characterized by hematogenic s...

We describe a 16 year old boy with acne fulminans associated with axial and peripheral polyarthritis. The patient's clinical course and therapy with isotretinoin, prednisolone and oxytetracycline are described. A possible association between the presence of HLA -B 27 antigen and reactive arthritis with acne fulminans in this case is evaluated. A review of the literature is included.

the immune response to hepatitis b surface antigen (hbsag) is influenced by several factors, of which hla antigens and balanced secretion of th1/th2 cytokines play important roles. the aim of this study was to evaluate the influence of hla antigens on cytokine secretion by hbsag-stimulated peripheral blood mononuclear cells (pbmc) from healthy neonates vaccinated with recombinant hbsag. pbmcs w...

studies on hla-g, a nonpolymorphic antigen of non-classical hla class i, is of basic and clinical significance. in the present study, the expression of hla-g proteins in the human skin tissue sections of normal and autoimmune pemphigus vulgaris (pv) individuals were investigated using monoclonal antibodies. the antibodies recognized both membrane-bound and soluble isoforms of hla-g. rt-pcr was ...