Mutations in TREX1 have been linked to a spectrum of human autoimmune diseases including Aicardi-Goutières syndrome (AGS), familial chilblain lupus (FCL), systemic lupus erythematosus, and retinal vasculopathy and cerebral leukodystrophy. A common feature in these conditions is the frequent detection of antibodies to double-stranded DNA (dsDNA). TREX1 participates in a cell death process implic...

Anti-dsDNA Abs are highly specific indicators of systemic lupus erythematosus (SLE) and play a pathogenic role in lupus nephritis. Human anti-dsDNA Abs are most likely generated by an Ag-driven mechanism. However, the Ag responsible for triggering anti-dsDNA Ab production has not been identified. To search for proteins that are cross-reactive with anti-dsDNA Abs, we screened a cDNA library from...

OBJECTIVE To determine whether antibodies to double stranded DNA (anti-dsDNA) have a pathogenic role in systemic lupus erythematosus (SLE). METHODS IgG was purified from 17 patients with SLE (median anti-dsDNA titre 1212 IU/ml) and nine healthy controls (median titre 40 IU/ml). Anti-dsDNA depleted polyclonal IgG (median anti-dsDNA titre 17 IU/ml) was also prepared from sera of the 17 patients...

Systemic lupus erythematosus is characterized by antibodies to a variety of intracellular self-antigens, such as dsDNA and Sm, and these serve as hallmarks in the diagnosis of systemic autoimmune diseases. Several studies have shown that SmD1 and SmD3 synthetic peptides represent highly functional antigens for autoantibody detection and thus for diagnostic applications. The present study analys...

We describe an assay to measure the extent of enzymatic unwinding of DNA by a DNA helicase. This assay takes advantage of the quenching of the intrinsic protein fluorescence of Escherichia coli SSB protein upon binding to ssDNA and is used to characterize the DNA unwinding activity of recBCD enzyme. Unwinding in this assay is dependent on the presence of recBCD enzyme and linear dsDNA, is consi...

Objectives. To investigate the presence of serum antinuclear antibody (ANA) and anti-double-stranded DNA (anti-dsDNA) in patients with myasthenia gravis (MG) analyze clinical characteristics prognostic factors associated MG. Methods. We retrospectively enrolled 363 MG analyzed follow-up data between positive negative for ANA anti-dsDNA. defined a Myasthenia Gravis Activities Daily Living (MG-AD...

background: antiself humoral immune responses have been detected not only in classical autoimmune dis­eases, but autoantibodies have also been found in sera of patients suffering from chronic parasitic dis­eases. we aimed to investigate the role of fasciolosis as a trigger factor of autoimmune reactivity by searching some anti­bodies related to hepatobiliary systems, in patients with fasciolosi...

BACKGROUND AND OBJECTIVES Elevated anti-double-stranded DNA (dsDNA) antibody and C-reactive protein are associated with proliferative lupus nephritis (PLN). Progression of quantitative anti-dsDNA antibody in patients with PLN has not been compared with that in patients with systemic lupus erythematosus (SLE) without LN before diagnosis. The temporal relationship between anti-dsDNA antibody and ...

Autoantibodies to double-stranded DNA (dsDNA) are, by definition, serological markers of systemic lupus erythematosus. However, the clinical value of anti-dsDNA antibodies largely depends on the assay principle and analytical variables of the methods used to quantitate and immunologically characterize them. In the present article, an overview of current methods for anti-dsDNA antibody detection...

We examined the double-stranded DNA (dsDNA) binding preference of the Saccharomyces cerevisiae Rad52 protein and its homologue, the Rad59 protein. In nuclease protection assays both proteins protected an internal sequence and the dsDNA ends equally well. Similarly, using electrophoretic mobility shift assays, we found the affinity of both Rad52 and Rad59 proteins for DNA ends to be comparable w...