PMID- 11127848 OWN - NLM STAT- MEDLINE DCOM- 20010426 LR - 20151119 IS - 0340-6245 (Print) IS - 0340-6245 (Linking) VI - 84 IP - 5 DP - 2000 Nov TI - Systemic endothelial cell markers in primary antiphospholipid syndrome. PG - 742-6 AB - The pathogenic mechanism underlying the prothrombotic tendency of Hughes' or antiphospholipid syndrome (APS) has not been elucidated. Numerous procoagulant mechanisms have been tested including platelet activation, monocyte tissue factor (TF) expression and endothelial cell (EC) activation. There is some evidence for the latter from studies on cultured human umbilical vein endothelial cells (HUVEC). Incubation with antiphospholipid antibodies (aPL) induces EC activation in vitro. We investigated whether there was evidence of EC perturbation in vivo using enzyme-linked immunosorbant assays (ELISAs) for soluble markers of EC dysfunction. Serum and plasma were collected from controls and patients with primary APS and ELISAs performed to quantify soluble vascular cell adhesion molecule (sVCAM), soluble intercellular adhesion molecule-1 (sICAM-1), interleukin-6 (IL-6), endothelin-1 (ET-1), von Willebrand factor (vWF) and soluble tissue factor (sTF). In addition, soluble p-selectin (p-selectin) and vascular endothelial growth factor (VEGF) were measured: the former as a marker of platelet activation, the latter as a potential mediator of TF expression. No significant differences in the levels of blood-borne soluble markers were detected between the patient and control groups except for VEGF and sTF, patients having significantly higher levels of VEGF and sTF than controls (p <0.05). These results suggest plasma soluble tissue factor and VEGF may play a role in the pathogenesis of thrombosis in APS, although the cell of origin of these molecules remains unclear. FAU - Williams, F M AU - Williams FM AD - Department of Haematology and Lupus Research, St Thomas' Hospital, London, UK. FAU - Parmar, K AU - Parmar K FAU - Hughes, G R AU - Hughes GR FAU - Hunt, B J AU - Hunt BJ LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Germany TA - Thromb Haemost JT - Thrombosis and haemostasis JID - 7608063 RN - 0 (Biomarkers) RN - 0 (Cell Adhesion Molecules) RN - 0 (Endothelial Growth Factors) RN - 0 (Lymphokines) RN - 0 (P-Selectin) RN - 0 (Vascular Endothelial Growth Factor A) RN - 0 (Vascular Endothelial Growth Factors) SB - IM MH - Adult MH - Aged MH - Antiphospholipid Syndrome/*metabolism/*physiopathology MH - *Biomarkers MH - Cell Adhesion Molecules MH - Endothelial Growth Factors/*metabolism MH - Endothelium, Vascular/*metabolism/*physiopathology MH - Female MH - Humans MH - Lymphokines/*metabolism MH - Male MH - Middle Aged MH - P-Selectin/*metabolism MH - Platelet Activation MH - Vascular Endothelial Growth Factor A MH - Vascular Endothelial Growth Factors EDAT- 2000/12/29 11:00 MHDA- 2001/05/01 10:01 CRDT- 2000/12/29 11:00 PHST- 2000/12/29 11:00 [pubmed] PHST- 2001/05/01 10:01 [medline] PHST- 2000/12/29 11:00 [entrez] AID - 00110742 [pii] PST - ppublish SO - Thromb Haemost. 2000 Nov;84(5):742-6.