PMID- 15023048 OWN - NLM STAT- MEDLINE DCOM- 20040402 LR - 20220311 IS - 0002-9173 (Print) IS - 0002-9173 (Linking) VI - 121 IP - 3 DP - 2004 Mar TI - Oxidized low-density lipoprotein/beta2-glycoprotein I complexes and autoantibodies to oxLig-1/beta2-glycoprotein I in patients with systemic lupus erythematosus and antiphospholipid syndrome. PG - 426-36 AB - Oxidized low-density lipoprotein (oxLDL) interacts with beta2-glycoprotein I (beta2-GPI) via oxLDL-derived specific ligands (oxLig-1) forming complexes. The prevalence and significance of oxLDL/alpha2-GPI complexes and antibodies to oxLig-1/alpha2-GPI were evaluated in patients with systemic lupus erythematosus (SLE) and antiphospholipid syndrome (APS). The oxLDL/beta2-GPI complex was 69% positive (above mean + 3 SD of control subjects) in 97 consecutive patients with SLE, 62% in 40 patients with SLE with secondary APS, and 60% in 50 control patients with SLE without APS. IgG anti-oxLig-1/beta2-GPI antibody was positive in 31 (32%) of 97 consecutive patients with SLE, in 26 (65%) of 40 patients with SLE with secondary APS, and in 6 (19%) of 32 control patients with SLE. Anti-oxLig-1/beta2-GPI antibodies were 93.7% specific with a positive predictive value of 90.0% for APS, better than anticardiolipin antibodies (80.0% specific, 71.4% predictive value). These results confirm that oxLDL/beta2-GPI complexes are common in SLE and suggest a possible immunogenic role in APS. In contrast, IgG anti-oxLig-1/beta2-GPI antibodies not only are associated with but also are clinically useful risk factors for APS. FAU - Lopez, Daniel AU - Lopez D AD - Corgenix, Westminster, CO 80234, USA. FAU - Garcia-Valladares, Ignacio AU - Garcia-Valladares I FAU - Palafox-Sanchez, Claudia A AU - Palafox-Sanchez CA FAU - De La Torre, Ignacio Garcia AU - De La Torre IG FAU - Kobayashi, Kazuko AU - Kobayashi K FAU - Matsuura, Eiji AU - Matsuura E FAU - Lopez, Luis R AU - Lopez LR LA - eng PT - Journal Article PL - England TA - Am J Clin Pathol JT - American journal of clinical pathology JID - 0370470 RN - 0 (Autoantibodies) RN - 0 (Glycoproteins) RN - 0 (Immunoglobulin G) RN - 0 (Lipoproteins, LDL) RN - 0 (beta 2-Glycoprotein I) RN - 0 (oxidized low density lipoprotein) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Antiphospholipid Syndrome/blood/*immunology MH - Autoantibodies/blood/*immunology MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Glycoproteins/*immunology/metabolism MH - Humans MH - Immunoglobulin G/blood MH - Lipoproteins, LDL/*immunology/metabolism MH - Lupus Erythematosus, Systemic/blood/*immunology MH - Male MH - Middle Aged MH - Risk Factors MH - Time Factors MH - beta 2-Glycoprotein I EDAT- 2004/03/17 05:00 MHDA- 2004/04/03 05:00 CRDT- 2004/03/17 05:00 PHST- 2004/03/17 05:00 [pubmed] PHST- 2004/04/03 05:00 [medline] PHST- 2004/03/17 05:00 [entrez] AID - 10.1309/2AUE-6HD4-W6TL-EUU5 [doi] PST - ppublish SO - Am J Clin Pathol. 2004 Mar;121(3):426-36. doi: 10.1309/2AUE-6HD4-W6TL-EUU5.