Specific genomic markers for the HLA-DQ subregion discriminate between DR4+ insulin-dependent diabetes mellitus and DR4+ seropositive juvenile rheumatoid arthritis

Does the locus on chromosome 11 implicated in susceptibility to HLA-DR4 dependent type I diabetes mellitus also affect susceptibility to rheumatoid arthritis?

There is a polygenic component to rheumatoid arthritis (RA) in addition to the known association with HLA-DR4. It has previously been shown in another autoimmune disease (type I diabetes mellitus) that a gene on chromosome 11p can act with HLA-DR4 to enhance susceptibility (relative risk 5-6). It is therefore possible that this locus may also affect the development of RA. Genotype frequencies a...

بررسی ارتباط HLA-DR4 و ساب تایپ‌های آن با ابتلا به آرتریت روماتوئید

Background: There are several evidences that genetic factors besides environmental triggers have important role in initiating the rheumatoid arthritis (RA). The aim of this study was to investigate the association of rheumatoid arthritis with different subtypes of HLA DR4 in Iranian patients. Methods: In an un-matched case control study, 110 rheumatoid arthritis patients (case) and 56 knee ost...

Bovine Type II Collagen (DRB1*0401) Transgenic Mice by Immunization Induction of Autoimmune Arthritis in HLA-DR4

The association between rheumatoid arthritis and the HLA antigen DR4.

One hundred and forty-two patients with 'definite' or 'classical' rheumatoid arthritis (RA) were studied for the frequency and possible prognostic significance of HLA DR4. Of these, 122 were seropositive, while 20 were negative for rheumatoid factor (RF) in serum. The HLA antigen DR4 was significantly increased in the seropositive group (65%) as well as in the seronegative group (55%) in compar...

Primary association of HLA-DQw8 with type I diabetes in DR4 patients.

DNA from 164 Caucasian type I (insulin-dependent) diabetic patients and 200 Caucasian nondiabetic control blood donors were analyzed by the polymerase chain reaction technique for HLA-DR4 and the associated Dw and DQB subtypes of DR4. The DQw8 subtype of HLA-DR4 was associated with type I diabetes in all DR4 subgroups (DR4/3 and DR4/non-3). Dw subtypes of DR4 other than DW10 did not confer addi...