The presence of viruses was sought in a colony of dogs bred from parents with systemic lupus crythematosus (SLE). Cell-free filtrates prepared from the spleens of these animals were injected into newborn dogs, mice, and rats. The canine recipients developed antinuclear antibody (ANA) and positive lupus erythematosus (LE) cell tests: ANA and, in some cases, antinative DNA antibodies were produce...

The Sle1ab genomic interval on murine chromosome 1 mediates the loss of immune tolerance to chromatin resulting in antinuclear Abs (ANA) production in the lupus-prone NZM2410 mouse. Global gene expression analysis was used to identify the molecular pathways that are dysregulated at the initiation of B lymphocyte autoimmunity in B6.Sle1ab mice. This analysis identified that STAT3 and ras-ERK sig...

UNLABELLED Despite anti-dsDNA antibodies constitute a wide range of specificities, they are considered as the hallmark for systemic lupus erythematosus (SLE). OBJECTIVE To identify clinical phenotypes associated with anti-dsDNA antibodies, independently of any clinical diagnoses. METHODS Patients with recent onset of any rheumatic symptoms were screened for antinuclear antibodies (ANA). All...

The autoimmune disease systemic lupus erythematosus has a complex environmental and multifactorial genetic basis. Genome-wide association studies have recently identified numerous disease-associated polymorphisms, but it remains unclear in which cells and during which step of pathogenesis specific polymorphisms interact to cause disease. Using a mouse model in which the same activating mutation...

Kikuchi-Fujimoto disease (KFD) is a self-limiting histiocytic necrotizing lymphadenitis of unknown origin. Of note, KFD was infrequently reported in adult systemic lupus erythematosus (SLE), with rare occurrence in childhood-SLE (C-SLE) patients. To our knowledge, the prevalence of KFD in the paediatric lupus population was not studied. Therefore, in a period of 29 consecutive years, 5,682 pati...

Antinuclear antibodies (ANAs) are venerable biomarkers for assessing the diagnosis and prognosis of patients with autoimmunity. While closely associated with diseases such as systemic lupus erythematosus, ANA expression occurs commonly in healthy people. The basis for this expression is unknown, although it may reflect features of the assays for antibody detection or intrinsic immunological dis...

We report four female patients with Graves' disease with positive ANA antibodies and possibility for development of systemic lupus erythematosus. All four patients have been treated with antithyroid drugs. SLE symptoms have appeared from 4 to 12 months after the beginning of therapy with methysol in two of them. The third patient had no symptoms for SLE, but her ANA, anti-DNA, and antihistone a...

background: systemic lupus erythematosus (sle) has various presentations in children. hematologic abnormalities is common in childhood onset of sle, however, isolated thrombocytopenia is relatively rare. thus, we present a child with isolated thrombocytopenia as a rare presentation of sle. case presentation: a 12-year-old boy with chief complaints of loss of appetite, weight loss, decreased pla...

Acquired von Willebrand’s syndrome (AvWS) is a rare heterogeneous bleeding disorder that could be secondary to many underlying diseases, among which systemic lupus erythematosus (SLE) is a less common cause. We presented an uncommon juvenile-onset SLE with AvWS as the first manifestation, whose autoantibodies were all negative except for low-titer positive antinuclear antibody (ANA). Initial co...

In lupus-prone NZM2328 mice, a locus Cgnz1 on chromosome 1 was linked to chronic glomerulonephritis, severe proteinuria, and early mortality in females. A locus Adnz1 on chromosome 4 was linked to antinuclear antibody (ANA) and anti-double stranded DNA (dsDNA) antibody (Ab) production. In this investigation, two congenic strains, NZM2328.C57L/Jc1 (NZM.C57Lc1) and NZM2328.C57L/Jc4 (NZM.C57Lc4), ...