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American Journal of Pathology, Vol 96, 227-236, Copyright © 1979 by American Society for Investigative Pathology

REGULAR ARTICLES

Deposition of IgA in renal glomeruli of mink affected with Aleutian disease

JL Portis and JE Coe

The glomerular deposition of immunoglobulin (Ig) was studied in sapphire mink affected with terminal Aleutian disease (AD). Fluorescein conjugated Ig-class specific antiserums were used to evaluate and identify the glomerular Ig. Kidneys of all 28 mink with documented AD had deposits of IgA and beta 1 C in a capillary and mesangial distribution. Only 7 of 28 mink had demonstrable glomerular IgG and/or IgM. In addition, interstitial plasma cell infiltrates in 17 of 19 kidneys stained exclusively with anti-IgA. All antiserums used in this study were evaluated for Ig-class specificity by both gel diffusion and agarose-bead techniques. The striking Ig class restriction demonstrated for glomerular Ig deposition in AD is discussed in light of current knowledge of the pathogenesis of AD glomerulopathy.

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