Abstract
Human membranous nephritis is a major cause of end-stage kidney disease. Active Heymann nephritis (HN) is an auto-immune model of membranous nephritis induced in Lewis rats by immunization with a crude renal tubular antigen (Fx1A) or megalin (gp330). The pathogenesis of HN is through the binding of anti-Fx1A autoantibodies to the auto-antigen expressed on glomerular epithelial cells, resulting in severe glomerular injury and proteinuria. The pathological features of HN include immune deposits in glomeruli and infiltration of glomeruli and the tubulointerstitium by macrophages and T cells. This unit describes the method of the preparation of Fx1A and the induction of HN in Lewis rats by immunization with Fx1A.
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