PMID- 15240159 OWN - NLM STAT- MEDLINE DCOM- 20040818 LR - 20061115 IS - 1521-6616 (Print) IS - 1521-6616 (Linking) VI - 112 IP - 2 DP - 2004 Aug TI - beta2-glycoprotein I, the playmaker of the antiphospholipid syndrome. PG - 161-8 AB - From its discovery in the early 60s till the beginning of the 90s, there was not much interest in plasma protein beta2-glycoprotein I (beta2-GPI). The finding that beta2-GPI acts as an essential cofactor for the detection of antiphospholipid antibodies (aPL) tremendously increased the interest in beta2-GPI [Lancet 335 (1990) 1544; Lancet 336 (1990) 177; Proc. Natl. Acad. Sci. U. S. A. 87 (1990) 4120]. It is now generally accepted that autoantibodies directed towards beta2-GPI are not only a serological marker but that they are involved in the pathology of the antiphospholipid syndrome (APS). In this review, we will first discuss the biochemistry of the protein beta2-GPI and the influence that the antibodies have on the function of beta2-GPI. Next, we will discuss the problems that are faced when assays to detect the presence of the autoantibodies are performed, emphasizing the urgent need for standardization of the anti-beta2-GPI-ELISA. Finally, we will discuss our latest insights into beta2-GPI and its role in the pathology of APS. Thereby, we will focus on the role of dimerized beta2-GPI on platelet and endothelial cell function. FAU - Bas de Laat, H AU - Bas de Laat H AD - Department of Haematology, Thrombosis and Haemostasis Laboratory, University Medical Center Utrecht, The Netherlands. FAU - Derksen, Ronald H W M AU - Derksen RH FAU - de Groot, Philip G AU - de Groot PG LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review PL - United States TA - Clin Immunol JT - Clinical immunology (Orlando, Fla.) JID - 100883537 RN - 0 (Antibodies, Antiphospholipid) RN - 0 (Glycoproteins) RN - 0 (beta 2-Glycoprotein I) SB - IM MH - Animals MH - Antibodies, Antiphospholipid/*analysis/chemistry/immunology MH - Antiphospholipid Syndrome/*immunology/physiopathology MH - Dimerization MH - Enzyme-Linked Immunosorbent Assay/standards MH - Glycoproteins/*chemistry/*immunology MH - Humans MH - beta 2-Glycoprotein I RF - 57 EDAT- 2004/07/09 05:00 MHDA- 2004/08/19 05:00 CRDT- 2004/07/09 05:00 PHST- 2004/02/13 00:00 [received] PHST- 2004/02/27 00:00 [accepted] PHST- 2004/07/09 05:00 [pubmed] PHST- 2004/08/19 05:00 [medline] PHST- 2004/07/09 05:00 [entrez] AID - S1521661604000609 [pii] AID - 10.1016/j.clim.2004.02.012 [doi] PST - ppublish SO - Clin Immunol. 2004 Aug;112(2):161-8. doi: 10.1016/j.clim.2004.02.012.