| Autor: |
CONTI, F., SORICE, M., CIRCELLA, A., ALESSANDRI, C., PITTONI, V., CARONTI, B., CALDERARO, C., GRIGGI, T., MISASI, R., VALESINI, G. |
| Předmět: |
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| Zdroj: |
Clinical & Experimental Immunology; Jun2003, Vol. 132 Issue 3, p509-516, 8p |
| Abstrakt: |
SUMMARY 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 (β 2 -GPI) mRNA expression by human peripheral blood monocytes, indicating that these cells synthesize β 2 -GPI. In addition, we show β 2 -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, β 2 -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 β 2 -GPI and suggest that patients with APS may have increased β 2 -GPI exposure on cell surface, which leads to persistently high monocyte tissue factor expression and consequently to a prothrombotic diathesis. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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