Abstract
Three monkeys (Cebus apella) experimentally infected with Schistosoma mansoni studied for periods of 19, 14, and 11 months showed deposits containing γ-globulin in subendothelial and subepithelial basal membranes and in basement membranes proper. The glomeruli showed mild reactivity characterized by local hypertrophy and hyperplasia of mesangial cells. Such findings were close to those observed by us in the kidney of hepatosplenic schistosomiasis patients without evidence of renal disease. The distribution of the deposits, both in human and experimental disease, are suggestive of preformed, non-glomerular antigen-antibody complexes that form in a zone of excess antigen and become trapped in the glomerular capillaries.
The possibility exists, but has not yet been proved beyond doubt, that renal disease in schistosomiasis patients could be the end result of this pathogenetic mechanism.
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