Autoimmunity, infectious immunity, and atherosclerosis.
BACKGROUND
Vascular inflammation is common in certain systemic autoimmune diseases and contributes to the oxidation of low-density lipoprotein (oxLDL) and oxLDL/beta2-glycoprotein I (beta2GPI) complex formation. These complexes have been implicated as proatherogenic autoantigens that participate in the development of atherosclerotic disease.


CONCLUSIONS
We have demonstrated that the in vitro macrophage uptake of oxLDL/beta2GPI complexes increases in the presence of IgG anti-beta2GPI antibodies and that IgG immune complexes containing oxLDL/beta2GPI upregulate the expression of both scavenger and Fcgamma receptors to activate beta2GPI specific T cells. Some persistent infections may cause immune responses that promote atherogenesis. Cellular immunity (Th1) against Helicobacter pylori (H. pylori) derived heat shock protein 60 (Hp-HSP60) cross-reacts with endogenous HSP60 to cause cardiovascular disease likely by molecular mimicry.


CONCLUSIONS
Infectious cellular response may be proatherogenic,while the humoral response (antibody production) maybe protective. We review the recent progress in our understanding of autoimmunity and infectious immunity that promote atherosclerosis.
Department of Cell Chemistry, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Kita-ku, Okayama, Japan. eijimatu@md.okayama-u.ac.jp
Eiji
E
Matsuura
Kazuko
K
Kobayashi
Yukana
Y
Matsunami
Lianhua
L
Shen
Nanhu
N
Quan
Marina
M
Makarova
Sergey V
SV
Suchkov
Kiyoshi
K
Ayada
Keiji
K
Oguma
Luis R
LR
Lopez
D000936:Antigen-Antibody Complex; D050197:Atherosclerosis / Q000209:etiology / Q000276:immunology*; D001323:Autoantibodies; D015551:Autoimmunity; D006801:Humans; D007239:Infections / Q000150:complications* / Q000276:immunology; D008077:Lipoproteins, LDL / Q000276:immunology / Q000378:metabolism; D053482:beta 2-Glycoprotein I / Q000276:immunology / Q000378:metabolism
D000936:Antigen-Antibody Complex; D001323:Autoantibodies; D008077:Lipoproteins, LDL; D053482:beta 2-Glycoprotein I; C099252:oxidized low density lipoprotein