期刊
BASIC RESEARCH IN CARDIOLOGY
卷 106, 期 6, 页码 911-923出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00395-011-0198-4
关键词
Microparticles; Molecular pathways; Haemostasis; Thrombosis
资金
- University of Birmingham Centre for Cardiovascular Sciences, City Hospital, Birmingham, UK
- Fundacion para la Formacion e Investigacion Sanitarias (FFIS), Spain (Murcia, Spain)
- Fundacion Ramon Areces (Spain)
Circulating microparticles released from various cell types are present in healthy individuals and the number and composition of their membrane vary in different disorders. Long considered to be cellular debris, microparticles have been recently identified as regulatory vectors of intercellular cross-talk. Indeed, circulating microparticles represent a heterogeneous mixture of spheroids of diverse surface membrane glycoproteins and lipids, with diverse cytoplasm components, the pattern of which depends on the type of stimulation and pathophysiology of parental cells. Despite extensive research into the procoagulant and proinflammatory properties of microparticles, there are few data that can provide information on the mechanism(s) of their formation and biological effects. Although several mechanisms of microparticle release have been suggested, the precise order of the events associated with key features of microparticle formation, transmembrane phosphatidylserine redistribution and cytoskeleton disruption remain to be clarified. In this review, we provide an overview of the molecular mechanisms involved in microparticle formation, as well as the diverse physiological and pathological roles they are able to undertake. Understanding the mechanism(s) governing microparticle release processes may be critical to understanding their precise role in various pathophysiological processes and thus indicate new potential routes to therapy.
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