[Circulating immune complex diseases (physiopathology, nosology treatment)].
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Biomedical subjects
Publications and source records attributed to B Devulder.
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In a previous article, we cited studies which have allowed us to isolate diverse glycoproteins of the rat glomerular basement membrane (GMB) and to study their biochemical structures and antigenicity. This present study attempts to examine, using the heterologous nephrotoxic nephritis model (Masugi's nephritis) the nephrotoxicity of immune sera prepared from three of these glycoproteins: one fairly rich in collagen-like structures (A3), another lacking collagen-like structures (A1), and a third of intermediate composition (A2). The results obtained are discussed in relation to those already published concerning the nature of the GBM antigen(s) responsible for the nephrotoxicity of the sera.
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Classically more common in women, scleroderma nevertheless affects with predilection men exposed to the inhalation of silica particles. The association scleroderma-silicosis is essentially a statistical finding. It has no particular clinical, radiological nor histological distinguishing characteristics, other than the syndromic juxtaposition of the stigmata of each of the two disorders. This serious pathological combination is not due merely to chance. It is the result of depressed cellular immunity, related to the cytotoxicity of silica and responsible for auto-immune reactions and the formation of circulating immune-complexes. In the presence of an underlying predisposition, the polyvisceral diffusion of inhaled toxic mineral particles could also facilitate the sclerodermic process by stimulating fibroblastic proliferation.
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The nephrotoxic activity of prepared antibodies against previously isolated glycoproteic fractions of the Rat glomerular basement membrane was studied using Masugi's model of Nephritis. This activity was determined by following the daily evolution of the proteinuria and the value of the seric complement. It seems linked to numerous factors.
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