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Antigen restriction...
Antigen restriction and IgG subclasses among anti-GBM autoantibodies
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- Segelmark, Marten (author)
- Lund University,Lunds universitet,Njurmedicin,Sektion II,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Nephrology,Section II,Department of Clinical Sciences, Lund,Faculty of Medicine,Skåne University Hospital
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- Butkowski, R. (author)
- University of Minnesota
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- Wieslander, J. (author)
- BioCarb AB
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(creator_code:org_t)
- Oxford University Press (OUP), 1990
- 1990
- English.
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In: Nephrology Dialysis Transplantation. - : Oxford University Press (OUP). - 0931-0509 .- 1460-2385. ; 5:12, s. 991-996
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http://dx.doi.org/10...
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Abstract
Subject headings
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- Thirty-seven sera positive for anti-GBM antibodies (antibodies against the ‘Goodpasture antigen’ = NCI-domain of collagen IV) in routine analysis were studied for antigen restriction and IgG subclasses. Four different polypeptides, the four α-chains (α1, α2, α3 and α4) of human collagen IV NCI, were used as coating in ELISA assays. Autoantibodies were detected with monoclonal antibodies towards human IgG subclasses. All patients had antibodies to the α3 chain, and most patients reacted much more to the α3 peptide than to any of the other three peptides. This shows that the NCI domain of the α3 chain of collagen IV is the major target for anti-GBM antibodies. A minor group of patients, 6 of 37, showed no antigen restriction and had only moderate titres. It remains to be studied, however, whether they have antibodies to another epitope and a different clinical picture. All four subclasses of IgG antibodies were present, but IgGl antibodies dominated. A group, consisting of females mainly, had relatively high titres of IgG4 antibodies to the NCI domain of the α3 chain of collagen IV.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Urologi och njurmedicin (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Urology and Nephrology (hsv//eng)
Keyword
- Anti-GBM
- Collagen IV
- Glomerulonephritis
- Goodpasture's syndrome
- IgG subclasses
Publication and Content Type
- art (subject category)
- ref (subject category)
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