期刊
THROMBOSIS RESEARCH
卷 172, 期 -, 页码 110-118出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.thromres.2018.10.019
关键词
Chemotaxis; Haemostasis; Inflammation; Leukocytes; Platelets; Thrombosis
资金
- Sackler Foundation
- MIUR [2012773NE3]
- Fondazione Cassa di Risparmio Perugia [2014.0083.021]
Introduction: Platelets participate in inflammatory disorders through a variety of different functional responses, including chemotaxis, platelet-leukocyte complex formation and facilitation of leukocyte recruitment that are thought to be distinct from platelet aggregation. This may account for why classical anti-platelet drugs have failed to ameliorate inflammatory disorders where platelets are known to participate, suggesting that distinct pathways may control inflammatory and haemostatic functions of platelets. In the present study, we have therefore investigated the effect of different stimuli on several different functions of platelets preferentially involved either in haemostasis or in inflammation. Materials and methods: Human platelets were stimulated with either inflammatory (fMLP, histamine, IL-1 beta, LPS, MDC/CCL22, SDF-1 alpha/CXCL12 and 5-HT) or haemostatic (ADP, collagen, convulxin, epinephrine, TRAP-6 and U46619) stimuli. Aggregation, platelet-leukocyte complex formation, platelet migration and platelet protein phosphorylation were assessed. Results: Haemostatic stimuli induced platelet aggregation, whilst inflammatory agonists induced platelet migration. The haemostatic stimuli, with the exception of epinephrine, and some of the inflammatory stimuli induced platelet-leukocyte complex formation, even if to a different extent. Furthermore, inflammatory stimuli induced a shorter lasting profile of platelet protein phosphorylation compared with haemostatic stimuli. Conclusions: Stimulation of platelets with inflammatory stimuli triggers the activation of non haemostatic functions different from those induced by haemostatic stimuli, supporting the existence of alternative platelet responses depending on the stimulus (haemostatic or inflammatory). A deeper understanding of the biochemical pathways behind these functional differences may lead to the development of novel therapeutic options targeting the inflammatory actions of platelets, without affecting their critical role in haemostasis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据