Journal
AUTOIMMUNITY
Volume 43, Issue 2, Pages 179-188Publisher
TAYLOR & FRANCIS LTD
DOI: 10.3109/08916930903305633
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Funding
- Foundation for Health and Rehabilitation through the Norwegian Rheumatology Organization [2004/2/0250]
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The glomerular targets for nephritogenic antibodies have been identified as membrane-associated chromatin fragments. The processes responsible for their deposition are poorly understood. To determine early events in antibody-mediated nephritis, we injected highly pure anti-dsDNA mAbs into BALB/c mice. Mice receiving one dose of anti-dsDNA mAbs were sacrificed 6 or 24 h later. No direct binding of mAbs to glomerular membranes or to the mesangial matrix was observed by immune electron microscopy. In contrast, repeated injections of the same antibodies over 4 weeks resulted in deposition of electron dense structures predominantly in the mesangial matrix. These structures contained mAbs and chromatin fragments as determined by co-localization immune electron microscopy. Biotinylated anti-dsDNA mAbs, injected into nephritic (NZB x NZW)F1 or MRL
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