Fluvastatin increases the expression of adhesion molecules, monocyte chemoattractant protein-1 and tissue factor in HUVEC stimulated by patient IgG fractions containing antiphospholipid antibodies

Sylvie Dunoyer-Geindre; Yordanka Dimitrova; Richard J. Fish; Nathalie Satta; Guido Reber; Egbert K.O. Kruithof; Philippe de Moerloose

doi:10.1160/TH04-05-0297

Thrombosis and Haemostasis, Table of Contents

Thromb Haemost 2005; 93(02): 339-345
DOI: 10.1160/TH04-05-0297

Endothelium and Vascular Development

Schattauer GmbH

Fluvastatin increases the expression of adhesion molecules, monocyte chemoattractant protein-1 and tissue factor in HUVEC stimulated by patient IgG fractions containing antiphospholipid antibodies

Sylvie Dunoyer-Geindre

¹Division of Angiology and Haemostasis, University Hospital, Geneva, and Faculty of Medicine, Geneva, Switzerland

,

Yordanka Dimitrova

¹Division of Angiology and Haemostasis, University Hospital, Geneva, and Faculty of Medicine, Geneva, Switzerland

,

Richard J. Fish

¹Division of Angiology and Haemostasis, University Hospital, Geneva, and Faculty of Medicine, Geneva, Switzerland

,

Nathalie Satta

¹Division of Angiology and Haemostasis, University Hospital, Geneva, and Faculty of Medicine, Geneva, Switzerland

,

Guido Reber

¹Division of Angiology and Haemostasis, University Hospital, Geneva, and Faculty of Medicine, Geneva, Switzerland

,

Egbert K.O. Kruithof

¹Division of Angiology and Haemostasis, University Hospital, Geneva, and Faculty of Medicine, Geneva, Switzerland

,

Philippe de Moerloose

¹Division of Angiology and Haemostasis, University Hospital, Geneva, and Faculty of Medicine, Geneva, Switzerland

› Author Affiliations

Abstract

Summary

The presence of antiphospholipid antibodies (APLA) is associated with an increased risk of recurrent thrombosis and pregnancy loss. APLA are able to activate endothelial cells (EC) and induce an increase in the expression of inflammatory marker proteins, such as leukocyte adhesion molecules, tissue factor or the monocyte chemoattractant protein-1 (MCP-1). Our objective was to investigate the effect of statins on EC activation induced by APLA in vitro. IgG was purified from the plasma of six patients with APLA and from healthy controls. EC were incubated with patient IgG or with control IgG, in the presence or absence of 5μM of fluvastatin, and expression of the leukocyte adhesion molecules, VCAM-1 and E-selectin, analyzed by flow cytometry and by quantitative reverse transcriptase-PCR (QRT-PCR).The expression of tissue factor and the chemokine MCP-1 was analyzed by QRT-PCR alone. Incubation of EC with patient IgG increased the expression of VCAM-1, E-selectin, tissue factor and MCP-1. Prior treatment of the cells with fluvastatin further increased the expression of these proteins. The fluvastatin effect was reversed by co-incubation with mevalonate or geranylgeranylpyrophosphate and mimicked by the geranylgeranyl transferase inhibitor GGTI-286. Our results show that in cultured human EC, statins increase the extent of inflammatory activation induced by APLA. This effect appears to be mediated by an inhibitory effect of statins on one or more geranylgeranylated protein(s).

Keywords

Antiphospholipid antibodies - endothelial cells - statins - tissue factor - cell adhesion molecules

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References

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