Background Genetic polymorphisms in the endoplasmic reticulum aminopeptidase gene ERAP2 has been attributed with etiopathogenesis of ankylosing spondylitis (AS). Here we assessed association single nucleotide (SNPs) AS predisposition Iranian patients and determined their effect on inflammatory state patients. Methods For genotyping rs2548538, rs2287988, rs17408150 SNPs using a real-time allelic...

Ankylosing Spondylitis (AS) is characterised by the strongest association with an HLA antigen ever described for any disease. It represents therefore the ideal model for the understanding of the link between immune-mediated diseases and the HLA system. The role of HLA-B27 in the pathogenesis of AS will be discussed focusing on the recently described higher expression of these molecules in patie...

Although association of HLA-B27 with human spondyloarthropathies has been known for several years, its role in disease pathogenesis is not understood. Recently, a few investigators have proposed that presentation of B27-derived peptides by MHC class II molecules may be the underlying mechanism. HLA-B27 transgenic rat and mouse models have provided a new tool for understanding the exact role of ...

There is a strong association between seronegative arthritis and HLA B27, but it is still unresolved whether the contribution of B27 to disease pathogenesis is solely as a restriction element for an arthritogenic peptide, or whether B27 itself serves as an autoantigen. This study uses transgenic rats to address the question as to whether exposure to an arthritogenic pathogen can alter tolerance...

Two cases of Reiter's syndrome in women are described. The diagnosis was based on the presence of increased vaginal and cervical discharge containing excess leucocytes, arthritis, conjunctivitis, and HLA B27 tissue-typing antigen. In addition circinate lesions developed on the vulva similar to those seen on the glans penis. No previous description of these lesions has been traced and the name '...

OBJECTIVE To determine the prevalence of ankylosing spondylitis in the Fula ethnic group in The Gambia, and relate the disease prevalence to the B27 frequency and subtype distribution of that population. METHODS 215 first degree relatives of 48 B27 positive Fula twin pairs, and 900 adult Fula males were screened for ankylosing spondylitis by clinical and, where appropriate, radiographic means...

Forty-two male patients with reactive spondyloarthropathies in a Dutch military hospital are described with mean age of onset 21.9 years. Peripheral arthritis or sacroiliitis was present in all, eye symptoms in 21 (50%), and genitourinary disease in 15 (35.7%). Evidence of antecedent sexually acquired or enterocolitic infection was found only in three (7.2%). HLA-B27 antigen was detected in 34 ...

the pelvis and lumbar spine. Although the spondyloarthropathies are grouped together, they display distinct clinical features. It is likely that an interplay among genetic, environmental, and immunologic factors is responsible for the various clinical manifestations of these diseases. Infection with an unknown organism or exposure to an unknown antigen in a genetically susceptible patient (HLA-...

Ankylosing spondylitis (AS) is a chronic seronegative spondyloarthritis with the major histocompatibility antigen HLA B27. Pulmonary involvement in AS is rare and is usually in the form of upper lobe fibrocavitary disease. Herein, we present a case with recurrent pleural and pericardial effusion without apical fibrobullous disease who responded to prednisolone treatment well. It is believed tha...

OBJECTIVE To investigate the HLA class I associations of ankylosing spondylitis (AS) in the white population, with particular reference to HLA-B27 subtypes. METHODS HLA-B27 and -B60 typing was performed in 284 white patients with AS. Allele frequencies of HLA-B27 and HLA-B60 from 5926 white bone marrow donors were used for comparison. HLA-B27 subtyping was performed by single strand conformat...