Abstract:
:It is well known that monocytes may play an active role in thrombogenesis, since they may express on their surface tissue factor, the major initiator of the clotting cascade. The results of this investigation demonstrate beta-2-glycoprotein I (beta2-GPI) mRNA expression by human peripheral blood monocytes, indicating that these cells synthesize beta2-GPI. In addition, we show beta2-GPI expression on cell surface of these cells by flow cytometric analysis, and the presence of this protein in cell lysate by Western blot. Interestingly, beta2-GPI expression on monocytes is significantly increased in patients with anti-phospholipid syndrome (APS) or systemic lupus erythematosus (SLE) as against healthy blood donors and correlates with tissue factor expression on monocytes. These findings support the view that monocytes are able to synthesize beta2-GPI and suggest that patients with APS may have increased beta2-GPI exposure on cell surface, which leads to persistently high monocyte tissue factor expression and consequently to a prothrombotic diathesis.
journal_name
Clin Exp Immunoljournal_title
Clinical and experimental immunologyauthors
Conti F,Sorice M,Circella A,Alessandri C,Pittoni V,Caronti B,Calderaro C,Griggi T,Misasi R,Valesini Gdoi
10.1046/j.1365-2249.2003.02180.xsubject
Has Abstractpub_date
2003-06-01 00:00:00pages
509-16issue
3eissn
0009-9104issn
1365-2249pii
2180journal_volume
132pub_type
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