Localization of fluorescein-labeled antinucleoside antibodies in glomeruli of patients with active systemic lupus erythematosus nephritis
Giuseppe A. Andres,L. Accinni,S. M. Beiser,Charles L. Christian,G. A. Cinotti,B. F. Erlanger,K. C. Hsu,Beatrice Carrier Seegal +7 more
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TLDR
The findings are consistent with the hypothesis that antigen-antibody complexes, formed by denatured DNA, specific antibody, and complement, are present in the deposits of foreign material accumulated in the GCW of patients with active SLE glomerulonephritis, and that they may contribute to the pathogenesis of this renal disease.Abstract:
Renal tissues from two groups of patients were studied with fluorescein-labeled (Fl-) antibodies (Abs) to immunoglobulins, complement, and antibodies prepared in rabbits against BSA conjugate of 5-methyluridine (T) and cytidine (C), the latter two of which react specifically with denatured DNA. The first group consisted of 13 SLE patients, and the second consisted of 53 patients with non-SLE nephropathies. The data obtained from the two groups of patients were used for comparison, and they showed the following:(a) Fl-Abs to immunoglobulins and complement were bound in the glomeruli of tissues from all patients with active SLE glomerulonephritis characterized by deposits of foreign material in glomerular capillary walls (GCW). The fluorescent pattern was granular, corresponding to the distribution of the glomerular deposits, as seen by electron microscopy. Fl-Abs reactive with thymine and cytosine were bound in the GCW of eight of the nine patients with active SLE glomerulonephritis and showed the same granular distribution. The capacity of these latter Fl-Abs to stain the GCW was removed by absorption with the homologous antigen or denatured DNA.(b) Fl-Abs to immunoglobulins, complement, and pyrimidine bases of DNA did not react with the GCW of two SLE patients without clinical and histologic evidence of glomerulonephritis or with the sclerotic glomeruli of two uremic patients with chronic "burned out" lupus nephritis.(c) The glomeruli of 47 of the 53 patients with other nephropathies bound Fl-Abs to immunoglobulins and complement to some extent, and in 26, the localization appeared as marked as in the patients with active SLE glomerulonephritis. Fl-Abs reactive with thymine and cytosine were bound in the GCW of only one of the renal tissues from the 53 non-SLE patients. In the remaining 52, no binding was seen.(d) The findings are consistent with the hypothesis that antigen-antibody complexes, formed by denatured DNA, specific antibody, and complement, are present in the deposits of foreign material accumulated in the GCW of patients with active SLE glomerulonephritis, and that they may contribute to the pathogenesis of this renal disease.read more
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References
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Immunological studies concerning the nephritis of systemic lupus erythematosus
TL;DR: The immunochemical evidence for the high specific activity of antinuclear antibodies and the association of DNA antigen with DNA antibody in glomeruli add further support for the antigen-antibody complex hypothesis for renal injury in systemic lupus erythematosus.
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Deoxybonucleic acid (DNA) and antibodies to DNA in the serum of patients with systemic lupus erythematosus.
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Antibodies specific for ribonucleosides and ribonucleotides and their reaction with dna.
TL;DR: These findings show that the major component of bacteriochlorophyll is inert with respect to the foregoing light-induced activities, and that a special kind of reaction center is needed for the photochemistry that leads to photosynthesis.
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Complement Fixation with Cell Nuclei and DNA in Lupus Erythematosus
TL;DR: Sera from patients with active lupus erythematosus fixed complement with a wide variety of nuclei from different organs and species, with calf thymus nucleoprotein, and in two instances with histone, suggesting the presence of 2 distinct serum factors.
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An electron microscope study of the glomerulus in nephrosis, glomerulonephritis, and lupus erythematosus
TL;DR: Renal biopsies from 16 patients with nephrosis, 7 patients with glomerulonephritis, and 3 patients with disseminated lupus erythematosus were studied with the electron microscope to indicate that early in the course of each of these diseases alterations occur in the fine structure of the glomeruli which serve to distinguish one disease process from another.