Oxidized LDL/β2-glycoprotein I complexes: New aspects in atherosclerosis

Eiji Matsuura, K. Kobayashi, K. Inoue, L. R. Lopez, Y. Shoenfeld

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

β2-glycoprotein I (β2GPI) is a major antigenic target for antiphospholipid antibodies. Oxidized low-density lipoprotein (oxLDL) is the principal lipoprotein found in atherosclerotic lesions, and it colocalizes with β2GPI and immunoreactive lymphocytes. oxLDL/β2GPI complexes appeared in the blood circulation of patients with diseases, such as systemic lupus erythematosus (SLE), antiphospholipid syndrome (APS), systemic sclerosis, diabetes mellitus and chronic renal diseases. Thus, the complexes may be associated with systemic and chronic inflammation of the vasculature. IgG anti- oxLDL/β2GPI complexes autoantibodies and their immune complexes were detected only in SLE/APS patients and in its animal model and were strongly associated with arterial thrombosis. The oxLDL/β2GPI complexes were internalized by macrophages via IgG anti-β2GPI antibody-mediated phagocytosis. In contrast, IgM anti-oxLDL antibodies derived from hyperlipidemic mice reduced the incidence of atherosclerosis. The distribution patterns of IgG and IgM anti-oxLDL antibodies in patients suggest the different roles of these antibodies.

Original languageEnglish
Pages (from-to)736-741
Number of pages6
JournalLupus
Volume14
Issue number9
DOIs
Publication statusPublished - 2005

Keywords

  • Antiphospholipid syndrome (APS)
  • Atherosclerosis
  • Autoantibody
  • Oxidized low-density lipoprotein (oxLDL)
  • β-glycoprotein I (βGPI)

ASJC Scopus subject areas

  • Rheumatology

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