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For: Del Turco S, Basta G, Mazzarisi A, Battaglia D, Navarra T, Coceani M, Bianchi M, Schlueter M, Marraccini P. Procoagulant activity of circulating microparticles is associated with the presence of moderate calcified plaque burden detected by multislice computed tomography. J Geriatr Cardiol 2014;11:13-9. [PMID: 24748876 PMCID: PMC3981978 DOI: 10.3969/j.issn.1671-5411.2014.01.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Revised: 02/24/2014] [Accepted: 03/02/2014] [Indexed: 01/24/2023]

For:	Del Turco S, Basta G, Mazzarisi A, Battaglia D, Navarra T, Coceani M, Bianchi M, Schlueter M, Marraccini P. Procoagulant activity of circulating microparticles is associated with the presence of moderate calcified plaque burden detected by multislice computed tomography. J Geriatr Cardiol 2014;11:13-9. [PMID: 24748876 PMCID: PMC3981978 DOI: 10.3969/j.issn.1671-5411.2014.01.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Revised: 02/24/2014] [Accepted: 03/02/2014] [Indexed: 01/24/2023]

Number

Cited by Other Article(s)

Horn P, Erkilet G, Veulemans V, Kröpil P, Schurgers L, Zeus T, Heiss C, Kelm M, Westenfeld R. Microparticle-Induced Coagulation Relates to Coronary Artery Atherosclerosis in Severe Aortic Valve Stenosis. PLoS One 2016;11:e0151499. [PMID: 27010400 PMCID: PMC4807100 DOI: 10.1371/journal.pone.0151499] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 02/29/2016] [Indexed: 12/02/2022] Open

Abstract

Background

Circulating microparticles (MPs) derived from endothelial cells and blood cells bear procoagulant activity and promote thrombin generation. Thrombin exerts proinflammatory effects mediating the progression of atherosclerosis. Aortic valve stenosis may represent an atherosclerosis-like process involving both the aortic valve and the vascular system. The aim of this study was to investigate whether MP-induced thrombin generation is related to coronary atherosclerosis and aortic valve calcification.

Methods

In a cross-sectional study of 55 patients with severe aortic valve stenosis, we assessed the coronary calcification score (CAC) as indicator of total coronary atherosclerosis burden, and aortic valve calcification (AVC) by computed tomography. Thrombin-antithrombin complex (TATc) levels were measured as a marker for thrombin formation. Circulating MPs were characterized by flow cytometry according to the expression of established surface antigens and by measuring MP-induced thrombin generation.

Results

Patients with CAC score below the median were classified as patients with low CAC, patients with CAC Score above the median as high CAC. In patients with high CAC compared to patients with low CAC we detected higher levels of TATc, platelet-derived MPs (PMPs), endothelial-derived MPs (EMPs) and MP-induced thrombin generation. Increased level of PMPs and MP-induced thrombin generation were independent predictors for the severity of CAC. In contrast, AVC Score did not differ between patients with high and low CAC and did neither correlate with MPs levels nor with MP-induced thrombin generation.

Conclusion

In patients with severe aortic valve stenosis MP-induced thrombin generation was independently associated with the severity of CAC but not AVC indicating different pathomechanisms involved in coronary artery and aortic valve calcification.

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