Gene Hla Drb1
Mostrando 25-36 de 52 artigos, teses e dissertações.
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25. Correlation between disease phenotype and genetic heterogeneity in rheumatoid arthritis.
RA is a heterogeneous group of disorders characterized by variations in clinical manifestations, disease course, and probably response to therapeutic interventions. We have addressed the question whether genetically and potentially etiologically more homogeneous subgroups of RA patients can be defined based upon the expression of the RA-linked sequence motif
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26. HLA class II antigens associated with systemic lupus erythematosus in black South Africans.
OBJECTIVE--To assess the associations of HLA class II antigens with systemic lupus erythematosus (SLE) in black South Africans. METHODS--HLA-DRB1 genotype frequencies assigned by polymerase chain reaction (PCR) amplification and sequence specific oligonucleotide probes were compared between 49 black SLE patients from Baragwanath Hospital and 87 ethnically ma
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27. Expression of HLA-DR4 and human CD4 transgenes in mice determines the variable region beta-chain T-cell repertoire and mediates an HLA-DR-restricted immune response.
Inherited susceptibility to rheumatoid arthritis is associated with genes encoding the human major histocompatibility complex class II molecule HLA-DR4. To study the immune function of HLA-DR4 and attempt to generate a murine model of rheumatoid arthritis we have produced triple transgenic mice expressing HLA-DRA*0101, -DRB1*0401, and human CD4. The expressi
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28. Association of MHC and rheumatoid arthritis:HLA polymorphisms in phenotypic variants of rheumatoid arthritis
Genes in the human leukocyte antigen (HLA) region remain the most powerful disease risk genes in rheumatoid arthritis (RA). Several allelic variants of HLA-DRB1 genes have been associated with RA, supporting a role for T-cell receptor-HLA-antigen interactions in the pathologic process. Disease-associated HLA-DRB1 alleles are similar but not identical and cer
BioMed Central.
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29. TAP polymorphism in patients with Behçet's disease.
OBJECTIVE--To determine if susceptibility to Behçet's disease (BD) is associated with polymorphism of HLA-DRB1, HLA-DQB1, DQB1, and TAP1 and TAP2 genes. METHODS--Fifty eight Spanish BD patients and 116 ethnically matched unrelated healthy subjects were typed at the HLA-DRB1 and HLA-DQB1 loci using polymerase chain reaction/sequence specific oligotyping (PCR
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30. Ancient haplotypes of the HLA Class II region
Allelic variation in codons that specify amino acids that line the peptide-binding pockets of HLA's Class II antigen-presenting proteins is superimposed on strikingly few deeply diverged haplotypes. These haplotypes appear to have been evolving almost independently for tens of millions of years. By complete resequencing of 20 haplotypes across the ∼100-kbp
Cold Spring Harbor Laboratory Press.
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31. HLA class II and T-cell receptor beta chain polymorphisms in Belgian patients with rheumatoid arthritis: no evidence for disease association with the TCRBC2, TCRBV8 and TCRBV11 polymorphisms.
OBJECTIVES--To investigate whether T-cell receptor (TCR) beta chain germline alleles, either alone or in combination with a particular HLA-genotype, are associated with rheumatoid arthritis (RA). METHODS--Three restriction fragment length polymorphisms (RFLPs), detected with TCR constant (TCRBC2) and variable (TCRBV8, TCRBV11) gene segments were analysed in
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32. HLA class II genes associated with anticentromere antibody in Japanese patients with systemic sclerosis (scleroderma).
OBJECTIVE--To define further HLA class II gene associations with anticentromere antibody (ACA), a major serum antinuclear antibody in patients with systemic sclerosis (SSc). METHODS--HLA class II genes were determined using polymerase chain reaction/restriction fragment length polymorphisms in 94 Japanese patients with SSc (22 ACA positive and 72 ACA negativ
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33. Structural requirements for recognition of the HLA-Dw14 class II epitope: a key HLA determinant associated with rheumatoid arthritis.
Although HLA genes have been shown to be associated with certain diseases, the basis for this association is unknown. Recent studies, however, have documented patterns of nucleotide sequence variation among some HLA genes associated with a particular disease. For rheumatoid arthritis, HLA genes in most patients have a shared nucleotide sequence encoding a ke
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34. Polymorphisms of the TAP1 and TAP2 transporter genes in Japanese SLE.
OBJECTIVE: To determine how polymorphism of transporter associated with antigen processing 1 and 2 (TAP1 and 2) alleles contributed to the pathogenesis of systemic lupus erythematosus (SLE) in Japanese patients. METHODS: TAP1 and TAP2 typing was carried out in 52 Japanese patients with SLE and 95 normal subjects by the PCR-RFLP (restriction fragment length p
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35. Histone Deacetylase Activity Represses Gamma Interferon-Inducible HLA-DR Gene Expression following the Establishment of a DNase I-Hypersensitive Chromatin Conformation
Expression of the retinoblastoma tumor suppressor protein (Rb) is required for gamma interferon (IFN-γ)-inducible major histocompatibility complex class II gene expression and transcriptionally productive HLA-DRA promoter occupancy in several human tumor cell lines. Treatment of these Rb-defective tumor cell lines with histone deacetylase (HDAC) inhibitors
American Society for Microbiology.
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36. Myelin basic protein-specific T lymphocyte repertoire in multiple sclerosis. Complexity of the response and dominance of nested epitopes due to recruitment of multiple T cell clones.
The human T cell response to the myelin basic protein (MBP) has been studied with respect to T cell receptor (TCR) usage, HLA class II restriction elements, and epitope specificity using a total of 215 long-term MBP-specific T cell lines (TCL) isolated from the peripheral blood of 13 patients with multiple sclerosis (MS) and 10 healthy donors. In most donors