نتایج جستجو برای: lupus
تعداد نتایج: 42708 فیلتر نتایج به سال:
We investigated the role of the costimulatory molecules, CD40 and its ligand CD40L, in the pathogenesis of human SLE. In comparison to normal subjects or patients in remission, PBMC from active lupus patients had a 21-fold increase in the frequency of CD40L-expressing, CD4+T cells. However, the expression of CD40L induced in either lupus or normal T cells by mitogenic stimulation could be down-...
Inhibiting DNA methylation in CD4+ T cells causes aberrant gene expression and autoreactive monocyte/macrophage killing in vitro, and the hypomethylated cells cause a lupus-like disease in animal models. Similar decreases in T cell DNA methylation occur in idiopathic lupus, potentially contributing to disease pathogenesis. The genes affected by DNA hypomethylation are largely unknown. Using DNA...
Warfarin therapy is used in lupus anticoagulant patients with thrombosis and yet the prothrombin time (PT)/international normalized ratio (INR) in these patients can sometimes be falsely elevated. Both a PT-based factor II (FII) assay and a chromogenic, enzymatic factor X (CFX) assay have been used for monitoring when the INR may be artifactual. This study compared FII and CFX assays in lupus a...
FcγRIIB-deficient mice generated in 129 background (FcγRIIB(129)(-/-)) if back-crossed into C57BL/6 background exhibit a hyperactive phenotype and develop lethal lupus. Both in mice and humans, the Fcγr2b gene is located within a genomic interval on chromosome 1 associated with lupus susceptibility. In mice, the 129-derived haplotype of this interval, named Sle16, causes loss of self-tolerance ...
Abstract A leaky gut has been linked to numerous autoimmune disorders, including systemic lupus erythematosus (SLE). We had previously reported significant upregulation of anti-flagellin antibodies in the blood SLE patients and lupus-prone MRL/lpr mice, which led our hypothesis that a drove through bacterial flagellin-mediated activation toll-like receptor 5 (TLR5). Here, we investigated initia...
817 Rev Bras Reumatol 2012;52(6):817-818 In adults with systemic lupus erythematosus (SLE), antinucleosome antibodies have already been described as markers of disease activity and lupus nephritis.1–4 In addition, anti-C1q and antinucleosome antibodies have an amplifying effect on the etiopathogenesis of lupus nephritis in adults.5 In this issue of the Brazilian Journal of Rheumaotlogy, Jesus e...
Thisessaydiscusseslupus, an imnnme-systemdysfunctionthat affects may, especiallyyoung women, but is recognized by all too few. Its multiple manifestations have been baffling to researchers for over 100years; only rexently have the tools of molecular biology and immunogenetics reveafed substantial new information on its mechanism of autoimmunity. Still, the ukimate trigger for lupus remains a my...
Prolactin is of interest in the pathogenesis of systemic lupus erythematosus (SLE) because almost 25% of SLE patients display hyperprolactinemia, and serum prolactin correlates with disease activity in some patients. Furthermore, hyperprolactinemia causes early mortality in lupus-prone mice and induces a lupus-like phenotype in nonspontaneously autoimmune mice. We show here that the immunomodul...
Interleukin 23 receptor expressing IL-17 producing T cells have been shown to be important in the development of murine lupus. The usefulness of IL-23 inhibition in ameliorating lupus nephritis is unknown. We hypothesized that inhibition of IL-23 will ameliorate nephritis in lupus-prone mice. To this end, we treated MRL/lpr lupus-prone mice for 6 weeks with a rat anti-IL-23p19 antibody, which r...
A case of acalculous cholecystitis presented as an acute abdominal emergency in a 22 year old woman with severe systemic lupus erythematosus. At the time of presentation the patient was receiving high doses of prednisone and cyclophosphamide to control her underlying disease. Histological examination of the biopsy specimen from the gall bladder showed lupus vasculitis. This complication of syst...
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