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ISSN: 2572-9462

Journal of Thrombosis and Circulation: Open Access
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Review Article

The Two Faces of Thrombosis: Coagulation Cascade and Platelet Aggregation. Are Platelets the Main Therapeutic Target?

Giovanni Cimmino*, Salvatore Fischetti and Paolo Golino

Department of Cardio-Thoracic and Respiratory Sciences, Section of Cardiology, University of Campania “Luigi Vanvitelli”, Naples, Italy

*Corresponding Author:
Giovanni Cimmino, MD, PhD
Department of Cardio-Thoracic and Respiratory Sciences
Section of Cardiology, University of Campania “Luigi Vanvitelli”
via Leonardo Bianchi, 180131 Naples, Italy
Tel: +39-081-7064175
Fax: +39-081-7064234
E-mail: [email protected]

Received date: December 28, 2016; Accepted date: January 27, 2017; Published date: January 31, 2017

Citation: Cimmino G, Fischetti S, Golino P (2017) The Two Faces of Thrombosis: Coagulation Cascade and Platelet Aggregation. J Thrombo Cir 3:117.

Copyright: © 2017 Giovanni C, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Abstract

Acute thrombus formation is the pathophysiological substrate underlying several clinical conditions, such as acute coronary syndrome (ACS) and stroke. Activation of coagulation cascade is a key step of the thrombotic process: vessel injury results in exposure of the glycoprotein tissue factor (TF) to the flowing blood. Once exposed, TF binds factor VII/VIIa (FVII/FVIIa) and in presence of calcium ions, it forms atertiary complex able to activate FX to FXa, FIX to FIXa, and FVIIa itself. The final step is thrombin formation at the site of vessel injury with subsequent platelet activation, fibrinogen to fibrin conversion and ultimately thrombus formation.

Platelets are the key cells in primary hemostasis. For years they have been considered only as cell fragments participating to primary hemostasis and onto which coagulation factors are assembled in the process of thrombus formation. However, recent advances in platelets pathophysiology have shown that these cells are able to regulate their gene and protein expression, make de novo protein synthesis, and release different mediators with paracrine effects that may interfere with different cell function.

Pharmacological modulation of both side of thrombosis, coagulation cascade and platelet activation, is of great clinical importance. Several clinical trials have clearly shown the efficacy of anticoagulation and/or anti platelet aggregation in different thrombotic disorders. This article aims at reviewing the recent advancements on the two faces of thrombosis focusing on the emerging role of platelets not only as clot-forming components, but highlighting their involvement in the inflammatory-immune system, as well as in modulation of different cell function.

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