DNA methylation modulates HRES1/p28 expression in B cells from patients with Lupus.

Systemic lupus erythematosus (SLE) disease is an autoimmune disease of unknown aetiology that affects predominantly women of child bearing age. Since previous studies, including ours, have demonstrated that CD4+ T cells and B cells from SLE patients are defective in their ability to methylate their DNA upon antigen stimulation, the aim of this study was to investigate whether DNA demethylation affects the transcription of HRES-1 in B cells. HRES-1 is the prototype of Human Endogenous Retrovirus (HERV) overexpressed in SLE.

Epidemiology, imaging, and treatment of giant cell arteritis.

Giant cell arteritis (GCA) is the most common vasculitis, and epidemiological data indicate a further increase in incidence over the last two decades. The disease predominates in individuals from Scandinavia and other Northern European countries. The impact of GCA on mortality remains unclear, although an increased risk of cardiovascular events has been reported.

Maintenance of infliximab treatment in ankylosing spondylitis: results of a one-year randomized controlled trial comparing systematic versus on-demand treatment.

Objective: Continuous treatment with the anti-tumor necrosis factor alpha (anti-TNFalpha) antibody infliximab is efficacious in ankylosing spondylitis (AS), whereas treatment discontinuation results in disease relapse, with variable delay. This study was undertaken to compare the efficacy of continuous treatment with infliximab with that of a treatment regimen adapted to symptom recurrence. Methotrexate (MTX) in combination with infliximab was also tested.

Anti-alpha-actinin antibodies: a new marker of lupus nephritis.

The exact role of anti-ds (double stranded) DNA antibodies in the pathogenesis of kidney injury in lupus nephritis remains a focus of continuing investigation. One theory explaining the pathogenicity of anti-dsDNA antibodies in lupus nephritis is direct cross-reactivity with renal antigens. Several years ago, alpha-actinin was identified as a major cross-reactive target for pathogenic anti-dsDNA antibodies in murine SLE.

Association of alpha-actinin-binding anti-double-stranded DNA antibodies with lupus nephritis.

Objective: Anti-double-stranded DNA (anti-dsDNA) antibodies may contribute to the pathogenesis of glomerulonephritis (GN) by cross-reacting with alpha-actinin in murine models and in some patients with systemic lupus erythematosus (SLE). We therefore sought to determine possible disease associations with serologic and clinical features and to characterize this new autoantibody specificity.

Methods: One hundred patients with SLE were recruited into this multicenter study, as well as 100 rheumatic disease controls and 2,100 healthy blood donors.

Group B streptococcal arthritis.

Recent data suggest that group B streptococcal arthritis is being increasingly diagnosed. We retrospectively reviewed the records of patients admitted to our Teaching Hospital Rheumatology Department for septic arthritis between May 2000 and May 2004 and we reviewed the relevant literature to determine the characteristics of group B streptococcal arthritis. We compared age, hospital stay duration, and number of joints involved in the patients with group B streptococcal arthritis and in those with septic arthritis due to other organisms.

Performance of hand radiographs in predicting the diagnosis in patients with early arthritis.

Objective: To evaluate the ability of baseline hand radiographs to predict the diagnosis 2 years later in a cohort of patients with early arthritis.

Methods: A total of 258 patients with arthritis onset within the previous year were evaluated. At baseline, all patients underwent a standardized evaluation including laboratory tests and radiographs.

Induction of endothelial cell apoptosis by the binding of anti-endothelial cell antibodies to Hsp60 in vasculitis-associated systemic autoimmune diseases.

Objective: Anti-endothelial cell antibodies (AECAs), which recognize a number of endothelial antigens, are seen in patients with systemic autoimmune diseases, more often in the presence of vasculitis than in its absence. Some AECAs induce apoptosis of endothelial cells (ECs), but their target antigens remain unknown. The aim of this study was to determine whether Hsp60 is a target antigen and whether AECAs induce apoptosis in ECs.

Incidence and nature of karate injuries.

Objectives: To determine the incidence and nature of karate injuries sustained in karate clubs and to identify risk factors for injuries.

Methods: One hundred eighty-six individuals from three karate clubs in Brest, France, were entered in a retrospective study extending from September 2002 to June 2003. Each athlete was asked to complete a questionnaire on karate injuries sustained during the previous year (type, location, mechanism, exercise during which the injury occurred, number of days off training and work, and medical care).

BAFF overexpression is associated with autoantibody production in autoimmune diseases.

The B-cell activity factor (BAFF) acts as a positive regulator of B-cell function. To gain further insight into the understanding of B-cell hyperactivity in autoimmune diseases, the serum level of BAFF was determined in 43 systemic lupus erythematosus (SLE) patients, 58 primary Sjögren's syndrome (pSS) patients, 28 rheumatoid arthritis (RA) patients, and 68 normal control subjects using an in-house sandwich ELISA. A commercial kit was used to detect soluble CD23 (sCD23) reflecting B-cell activation.

Post-fracture osteolysis of the pubic bone simulating a malignancy: report of a case.

Post-fracture osteolysis of the pubic bone is rare. We report a case of a 70-year-old woman with osteoporosis and a history of radiation therapy 2 years earlier. At presentation, she was found to have a bilateral sacral fracture and fractures of both pubic rami on one side.

Value of antibodies to citrulline-containing peptides for diagnosing early rheumatoid arthritis.

Objective: To compare the diagnostic values of antiperinuclear factor (APF), antikeratin antibody (AKA), and anti-cyclic citrullinated peptides (anti-CCP) to discriminate between patients with and without rheumatoid arthritis (RA) and to determine the diagnostic value of anti-CCP used alone or with other tests.

Methods: Two hundred and seventy patients with early arthritis underwent standardized investigations in 1995-1997. The clinical utility of APF, AKA, and anti-CCP in first-visit sera was evaluated using receiver-operating characteristic curves.

Ability of foot radiographs to predict rheumatoid arthritis in patients with early arthritis.

Objective: In a cohort of patients with early arthritis, to evaluate how well foot radiographs at study inclusion predicted a diagnosis of rheumatoid arthritis (RA) 2 years later.

Methods: A cohort of patients with arthritis of less than one year duration was evaluated in a multicenter study and followed for 30 +/- 11 months. An observer blinded to patient data read all 149 hand and foot radiographs done at study inclusion, using item 7 of the 1987 American College of Rheumatology (ACR) criteria for RA and Sharp's method to score erosions and joint space narrowing.

Musculoskeletal manifestations in cystic fibrosis.

Although bone and joint manifestations are common in children with cystic fibrosis (CF), they have received little attention in adults. As compared to healthy individuals, bone mineral density is low, even with calcium intakes greater than 1500 mg/d. Nevertheless, calcium and phosphate levels in blood and urine are often normal, and vitamin D levels vary.