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Isolated congenital heart block may be associated with autoimmune disorder such as Sjögren Syndrome and systemic lupus erythematosus. In this work we demonstrate circulating autoantibodies against neonatal heart M 1 muscarinic acetylcholine receptor (mAChR) in the sera of children with...
The genes conferring susceptibility to autoimmune (insulin-dependent) diabetes mellitus (IDDM) are, in most cases, not defined. Among the loci so far identified as associated with murine IDDM ( Idd1-19 ), only the nature of Idd1 has been assessed. Here we show that thymocytes and peripheral...
Murine autoimmune gastritis, induced by neonatal thymectomy or the injection of CD25-depleted lymphocytes into nu/nu recipients, is characterized by an inflammatory infiltrate into the gastric mucosa, parietal cell destruction and circulating anti-parietal cell antibodies. Using RAG-2 −/−...
Lymphoaccumulation occurs in MRL- lpr/lpr mice, because double-negative T cells (DNT cells) cannot be deleted due to their Fas mutation, i.e., lpr . We show here that IL-12 enhances in lymphoaccumulation by suppressing the negative T cells in MRL- lpr/lpr mice. It has been reported that viable...
Autoantibody responses to endometrial antigens are a common feature of endometriosis. Antibody responses to a number of serum and tissue antigens such as α 2 -Heremans Schmidt glycoprotein (α 2 -HSG), transferrin, and carbonic anhydrase have been identified. The nature of the epitopes...
A vast majority of systemic lupus erythematosus (SLE) patients display decreased expression of TCR ζ-chain mRNA, a critical signaling molecule implicated in the selection of the TCR repertoire and in the prevention of autoimmunity. To identify the molecular mechanisms involved in the...
Accumulating evidence suggests that CD4 + T helper type 1 (Th1) cells play a major role in the development of insulin-dependent diabetes mellitus (IDDM) in the non-obese diabetic (NOD) mouse model. Interleukin (IL)-12 is a potent immunoregulatory molecule that is a key determinant of T-cell...
Treatment of normal polyclonal human IgG and of F(ab′) 2 fragments of IgG with 6.0 M urea, 1.3 M sodium thiocyanate or with acidic buffers (pH 2.0), resulted in a dramatic and selective enhancement of the preexisting antibody reactivity with self antigens. Enhanced antibody activity revealed by...
The aim of this study was to explore the roles of toxic shock syndrome toxin-1 (TSST-1) in collagen-induced arthritis (CIA). DBA/1 mice were immunized with type II collagen (CII) and treated with TSST-1. Intraperitoneal and intravenous injections of TSST-1 aggravated CIA, enhancing its incidence...
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