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  • Title: Antibody localization in the glomerular basement membrane may precede in situ immune deposit formation in rat glomeruli.
    Author: Agodoa LY, Gauthier VJ, Mannik M.
    Journal: J Immunol; 1985 Feb; 134(2):880-4. PubMed ID: 3880792.
    Abstract:
    The administration of cationized antibodies, specific to human serum albumin, into the renal artery of rats caused transient presence of IgG in glomeruli by immunofluorescence microscopy. Intravenous infusion of appropriate doses of antigen after the injection of cationized antibodies resulted in immune deposit formation in glomeruli that persisted through 96 hr. By electron microscopy, these deposits were located in the subepithelial area. The injection of large doses of antigen produced immune deposits which were present in glomeruli for only a few hours, presumably due to formation of only small-latticed immune complexes. The presented data indicate that cationic antibodies bound to the fixed negative charges of the glomerular basement membrane can interact with circulating antigen to form immune deposits in glomeruli. This mechanism may be important because anionic antigens have been shown to induce the synthesis of cationic antibodies.
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