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Erschienen in: Journal of Thrombosis and Thrombolysis 2/2010

01.08.2010

Human cytomegalovirus increases HUVEC sensitivity to thrombin and modulates expression of thrombin receptors

verfasst von: Milan Popović, Svetlana Paskaš, Maja Živković, Ladislav Burysek, Yves Laumonnier

Erschienen in: Journal of Thrombosis and Thrombolysis | Ausgabe 2/2010

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Abstract

Human cytomegalovirus (HCMV) establishes a life-long persistent infection. HCMV infection could be associated with chronic inflammatory diseases, such as cardiovascular disease and atherosclerosis. Here we observed that in HCMV (AD-169) pre-exposed human umbilical vein endothelial cells (HUVEC), thrombin-induced expression of IL-1α and M-CSF is markedly enhanced compared to the un-exposed cells. Study of the expression of thrombin receptor genes in HUVEC showed that HCMV triggered a time- and concentration-dependent expression of the thrombin receptors PAR1, PAR3 and PAR4 at the mRNA level. Induction of PAR1 and PAR3 mRNA expression is due to transcriptional activation of their promoters as shown by gene reporter assay. Furthermore, the virus induced expression of PAR1 and PAR3 but not PAR4 proteins, as analyzed by Western immunoblotting. However, flow cytometric analysis revealed that only PAR3, expressed at very low level in control HUVEC, is induced at the surface during the exposure to the virus. Our data suggest that although exposure to HCMV induces a minor increase of cell-surface receptors expression, it does make endothelial cells more responsive to additional thrombin stimulation.
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Metadaten
Titel
Human cytomegalovirus increases HUVEC sensitivity to thrombin and modulates expression of thrombin receptors
verfasst von
Milan Popović
Svetlana Paskaš
Maja Živković
Ladislav Burysek
Yves Laumonnier
Publikationsdatum
01.08.2010
Verlag
Springer US
Erschienen in
Journal of Thrombosis and Thrombolysis / Ausgabe 2/2010
Print ISSN: 0929-5305
Elektronische ISSN: 1573-742X
DOI
https://doi.org/10.1007/s11239-010-0447-7

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