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Imatinib is a receptor tyrosine kinase inhibitor that blocks the activity of c-Abl, c-Kit, and PDGF receptors. We tested the protective effects of imatinib in thymic stromal lymphopoietin transgenic mice, a model of cryoglobulinemia and associated membranoproliferative glomerulonephritis (MPGN), in
Cryoglobulinemia is a systemic immune complex-mediated vasculitis that can have significant morbidity and mortality. The current treatment for cryoglobulinemia, including chlorambucil, steroids, plasmapheresis, and rituximab, is lacking in terms of efficacy, safety, and relapse rates. Imatinib, a
Many types of glomerulonephritis are initiated by the deposition of immune complexes, which induce tissue injury via either engagement of Fc receptors on effector cells or via complement activation. Four murine Fcgamma receptors (FcgammaRs) have been identified at present. Ligand binding to
A monoclonal IgM rheumatoid factor (RF) from a patient with mixed essential cryoglobulinaemia was found to bind to type M15 group A streptococci with high affinity. The reaction was exerted via the antibody combining sites since it was inhibited by F(ab')2 fragments of anti-idiotypic (Id) antibodies
Hepatitis C virus (HCV) is the leading cause of chronic liver disease worldwide. HCV is also the major cause of mixed cryoglobulinemia, a B-lymphocyte proliferative disorder. Direct experimentation with native viral proteins is not feasible. Truncated versions of recombinant E2 envelope proteins,
Hepatitis C virus (HCV) infects B lymphocytes and induces mixed cryoglobulinemia and B cell non-Hodgkin's lymphoma. The molecular mechanism for the pathogenesis of HCV infection-mediated B cell disorders remains obscure. To identify the possible role for HCV nonstructural 5A (NS5A) protein in B