A total of 106 pairs of identical twins, of whom 56 were concordant and 50 discordant for insulin-dependent diabetes, were typed for HLA-DR. In both the concordant and discordant groups there was a high prevalence of the antigens DR3 and DR4, a low prevalence of DR5 and DR7, and a virtual absence of DR2. The heterozygous phenotype DR3,DR4 was more prevalent in concordant than discordant pairs. ...

The objective of the present study was to investigate a possible association between HLA class II antigens and idiopathic focal segmental glomerulosclerosis (FSGS). HLA-A, -B, -DR and -DQ antigens were determined in 19 Brazilian patients (16 white subjects and three subjects of Japanese origin) with biopsy-proven FSGS. Comparison of the HLA antigen frequencies between white patients and white l...

The tumor necrosis factor–related apoptosis-inducing ligand receptor modulates apoptotic response by binding to the proapoptotic death receptor 4 (DR4). Perturbed apoptosis due to missense alterations in the candidate tumor suppressor gene DR4 leads to deregulated cell proliferation and cancer predisposition. Recent studies have discussed the association of DR4 variants with cancer risk. We eva...

The clinical course of children with IgM rheumatoid-factor-positive chronic arthritis closely resembles that of seropositive rheumatoid disease in adults. The frequency of HLA DR4 is known to be increased in adults with seropositive rheumatoid arthritis, but the first major report on childhood arthritis did not suggest a correlation, though only 8 seropositive cases were included. Fifty-two chi...

Many tumor cell types are sensitive to tumor necrosis factor-related apoptosis-inducing ligand (TRAIL)-induced apoptosis. Incubation of TRAIL-sensitive cells with TRAIL invariably leads to resistant survivors even when high doses of TRAIL are used. Because the emergence of resistance to apoptosis is a major concern in successful treatment of cancer, and TRAIL survivors may contribute to therape...

TNF-related apoptosis-inducing ligand (TRAIL) induces apoptosis through death receptors (DRs) 4 and/or 5 expressed on the surface of target cells. We have previously shown that deficiency of DR4 and DR5 on the surface membrane is a critical mechanism of cancer cell resistance to the recombinant human TRAIL and its receptor agonistic antibodies, which are being evaluated clinically for treating ...

Recently (1), we described a new genetic system that is HLA-DQ-related . Two alleles, 2B3 and TA10, can be recognized serologically . The 2133 specificity detected with the 11133 mAb was previously described (2) as a DQwl-related specificity . The TA 10 specificity is DQw3-related and was first. described by Maeda (3) with the TA 10 mAb. TA10 can also be detected with alloantisera (4) . Recentl...

This report describes the identification and bioinformatics analysis of HLA-DR4-restricted HIV-1 Gag epitope peptides, and the application of dendritic cell mediated immunization of DNA plasmid constructs. BALB/c (H-2d) and HLA-DR4 (DRA1*0101, DRB1*0401) transgenic mice were immunized with immature dendritic cells transfected by a recombinant DNA plasmid encoding the lysosome-associated membran...

OBJECTIVE To investigate the potential role of the HLA-linked LMP2 (low molecular weight protein) gene polymorphisms in conjunction with DR4 and DR7 on extraspinal disease manifestations in HLA-B27 positive patients with spondyloarthropathy. METHODS 172 patients with spondyloarthropathy, 46 healthy, HLA-B27 positive blood donors, and 99 unrelated controls were typed for HLA-class I and II ant...

Gastric cancer cells are usually insensitive to tumor necrosis factor-related apoptosis-inducing ligand (TRAIL). In the present study, in MGC803 cells treated with 100 ng/ml TRAIL for 24 h, the inhibition rate of cell proliferation was 9.76±2.39% and the rate of cell apoptosis was only 4.37 ± 1.45%. Treatment with epirubicin (1.18 µg/ml, IC50 dose for 24 h) and TRAIL (100 ng/ml for 24 h) led to...