Cited by 42Systemic Lupus Erythematosus ResearchVasculitis and related conditionsSystemic Sclerosis and Related Diseases

Anti-beta2-glycoprotein I, anti-prothrombin and anticardiolipin antibodies in a longitudinal study of patients with systemic lupus erythematosus and the antiphospholipid syndrome

Inanc, M·1998·Rheumatology

Abstract

OBJECTIVE: To determine anti-beta2 glycoprotein-I (anti-beta2GPI) and anti-prothrombin (anti-ProT) antibody levels, and the IgG subclass distribution of anti-beta2GPI antibodies, in serial samples from patients with systemic lupus erythematosus (SLE) and antiphospholipid syndrome (APS) having initial or recurrent thrombotic/neurological (T/N) events during the study period. To investigate the correlations between these antibodies and beta2GPI antigen, anticardiolipin antibody (aCL), anti-double-stranded (ds) DNA, C3 levels and disease activity. METHODS: Fifty serum samples were identified from seven patients with SLE who had had T/N events during the follow-up from a cohort under long-term follow-up. IgG anti-beta2GPI, anti-ProT, aCL, IgG subclasses of anti-beta2GPI and beta2GPI antigen levels were determined by ELISA. Corresponding disease activity [British Isles Lupus Assessment Group (BILAG)], anti-dsDNA and C3 levels were compared. RESULTS: IgG anti-beta2GPI antibody levels were elevated in six of the patients before and after the T/N events with less marked fluctuations than aCL antibody levels. The predominant subclass of anti-beta2GPI antibodies was IgG2 before and after the T/N events. IgG anti-ProT antibodies were negative in all cases. There was a significant but weak correlation between anti-beta2GPI and aCL antibodies. No correlation was found between disease activity and IgG anti-beta2GPI antibody and beta2GPI antigen levels. There were fluctuations in beta2GPI antigen levels and a trend to increase after T/N events was observed in some patients. CONCLUSION: Most of the patients with a T/N event during the study period had IgG anti-beta2GPI, but not IgG anti-ProT antibodies. Many IgG aCL-negative samples were found to have IgG anti-beta2GPI activity during the follow-up period. The predominant subclass of IgG anti-beta2GPI was IgG2, which may have importance in the pathogenesis of APS. beta2GPI antigen levels were found to be increased in some patients with SLE after T/N events. IgG anti-beta2GPI antibodies may be used as an adjunctive marker of future T/N events in patients with SLE and APS with aCL antibodies and lupus anticoagulant.

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Crossref · 10.1093/rheumatology/37.10.1089

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Authors
Inanc, M.
Venue
Rheumatology
Published
1998-10-01
Volume
37
Issue
10
Pages
1089-1094
ISSN
  • 0263-7103 (ISSN-L)
  • 1460-2172
OpenAlex
W4322697217
Cited by
42
References
0
Citations by year
2024: 1 · 2021: 2 · 2020: 1 · 2017: 1 · 2016: 2 · 2014: 1 · 2013: 1
FWCI
2.38
Type
journal article
Language
en
Open access
closed
Locations
  • British journal of rheumatology (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • PubMed
Topics
  • Health Sciences › Medicine › Rheumatology › Systemic Lupus Erythematosus Research
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Vasculitis and related conditions
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Systemic Sclerosis and Related Diseases
Keywords
anti-beta2-glycoprotein I antibodies, anti-prothrombin antibodies, anticardiolipin antibodies, antiphospholipid syndrome, systemic lupus erythematosus, thrombotic complications, neurological events, IgG subclasses, disease activity, lupus anticoagulant
MeSH terms
Adult, Antibodies, Antinuclear, Cerebrovascular Disorders, Complement C3, Enzyme-Linked Immunosorbent Assay, Female, Glycoproteins, Humans, Immunoglobulin G, Immunoglobulin M, Longitudinal Studies, Lupus Erythematosus, Systemic, Middle Aged, Prothrombin, Thrombosis, Antiphospholipid Syndrome, Antibodies, Anticardiolipin, beta 2-Glycoprotein I

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