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Arthritis Rheum. 1980 Apr;23(4):392-403.

Restricted subpopulations of DNA antibodies in kidneys of mice with systemic lupus. Comparison of antibodies in serum and renal eluates.

Abstract

Sera from MRL/1, BXSB, and NZB/NZW mice, which develop IgG antibodies to DNA and glomerular deposits of DNA-antiDNA immune complexes, were studied by isoelectric focusing. A large array of IgG antibodies with isoelectric points ranging from pH 5.5--9.0 were found to bind double-stranded DNA. Antibodies with isoelectric points from 8.0--8.5 were significantly more frequent than antibodies focusing in all other pH ranges. In contrast, glomerular eluates from MRL/1 and NZB/NZW mice contained a restricted number of DNA-binding bands, all of which focused at pH 8.0--9.0. Anti-DNA with isoelectric points from pH 8.0--9.0 may be more pathogenic for the kidney than other subpopulations.

PMID:
7370058
DOI:
10.1002/art.1780230402
[Indexed for MEDLINE]

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