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. 1974 May 1;139(5):1283–1302. doi: 10.1084/jem.139.5.1283

ALTERED FUNCTIONAL PROPERTIES OF THE RENAL GLOMERULUS IN AUTOLOGOUS IMMUNE COMPLEX NEPHRITIS

AN ULTRASTRUCTURAL TRACER STUDY

E E Schneeberger 1, P D Leber 1, M J Karnovsky 1, R T McCluskey 1
PMCID: PMC2139662  PMID: 4132994

Abstract

The altered functional properties of the glomerular capillary wall in a model of autologous immune complex disease (Heymann's nephritis) was studied by electron microscopy using intravenously injected protein tracers of varying molecular weight. There was an increase in the permeability of the glomerular basement membrane (GBM) itself to large molecules; this change was focal and was found in those areas where the GBM contained immune complex deposits. Both ferritin and catalase, tracers normally restricted from passing the glomerular filter, were present in the urinary space within minutes of injection. No evidence was obtained for increased glomerular epithelial transport in this disease. Foot process swelling and "close" junction formation was moderate, even in animals with marked degrees of proteinuria. Indirect evidence, therefore, makes an alteration in the slit pore complex likely. In addition, there was immediate and selective concentration of all tracers within deposits, though ferritin was partially excluded from some deposits. This phenomenon may be of significance in the perpetuation of the disease.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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