OxLDL/β2GPI complexes and autoantibodies in patients with systemic lupus erythematosus, systemic sclerosis, and antiphospholipid syndrome: Pathogenic implications for vascular involvement

Luis R. Lopez, Daniel F. Simpson, Beth L. Hurley, Eiji Matsuura

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Oxidized low-density lipoprotein (oxLDL) interacts with β2GPI, forming oxLDL/β2GPI complexes. Autoimmune vascular inflammation (and oxidative stress) may promote the formation of these complexes. The coexistence of oxLDL/β2GPI complexes with autoantibodies to these complexes suggests an active pro-atherogenic role in vascular thrombosis and atherosclerosis. Immunoglobulin G (IgG) anti-oxLDL/β2GPI antibodies have been regarded as pro-atherogenic, whereas IgM antibodies are thought to be anti-atherogenic. For this study, oxLDL/β2GPI complexes, IgG, and IgM anti-oxLDL/β2GPI antibodies were measured using enzyme-linked immunosorbent assay (ELISA). Measurements were taken in two patient groups: (1) those with systemic lupus erythematosus (SLE), systemic sclerosis (SSc), and rheumatoid arthritis (RA); and (2) those with primary and secondary antiphospholipid syndrome (APS). For oxLDL/β2GPI complexes, SLE and SSc patients had the highest mean optical densities (ODs) (P

Original languageEnglish
Pages (from-to)313-322
Number of pages10
JournalAnnals of the New York Academy of Sciences
Publication statusPublished - 2005



  • β2-glycoprotein I
  • Antiphospholipid syndrome
  • Atherosclerosis
  • Autoimmunity
  • Oxidized low-density lipoprotein
  • Rheumatoid arthritis
  • Systemic lupus erythematosus
  • Systemic sclerosis

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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