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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Experimental gold nephropathy in guinea pigs: detection of autoantibodies to renal tubular antigens.

Renal tubular dysfunction was induced in Hartley guinea pigs by injection of sodium aurothiomalate (gold) as manifested by excretion of tubular basement membrane (TBM) antigen and renal tubular epithelial (RTE) antigen in urine and tubular proteinuria. Following the tubular dysfunction, autoimmune tubulointerstitial nephritis (TIN) and/or immune complex nephropathy (ICN) developed in a large proportion of animals. TIN was associated with anti-TBM antibodies, and the histological features were characterized by tubular lesions with interstitial mononuclear cell infiltration, destruction of tubules, and interstitial fibrosis. In ICN, the glomerular lesions consisted of partial thickening of capillary walls and mesangial cellularity, and granular immune deposits were seen in the mesangial area and on capillary walls. Furthermore, electron-dense deposits were demonstrated in the mesangial area and in the glomerular basement membrane (GBM) by electron microscopy. Anti-RTE antibodies were detected in the sera and eluates from the kidney of animals with ICN. RTE antigens were also detected in the glomerular deposits by indirect immunofluorescence using anti-guinea pig RTE antibody. These results suggest that TBM and RTE antigens released from renal tubules damaged by a direct toxic action of gold may lead to antibody formation against these antigens and induce TIN and/or ICN.[1]


  1. Experimental gold nephropathy in guinea pigs: detection of autoantibodies to renal tubular antigens. Ueda, S., Wakashin, M., Wakashin, Y., Yoshida, H., Iesato, K., Mori, T., Mori, Y., Akikusa, B., Okuda, K. Kidney Int. (1986) [Pubmed]
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