[The role of microparticles in vascular diseases]

P Diehl1, T Helbing, C Bode

  • 1Abteilung für Innere Medizin III, Kardiologie und Angiologie, Medizinische Universitätsklinik, Hugstetter Strasse 55, Freiburg. Philipp.Diehl@uniklinik-freiburg.de

Hamostaseologie
|October 7, 2008
PubMed

Insights

Microparticles (MPs), released by cells, can be measured in blood to reveal cell function. These vesicles play roles in cell communication and vascular disease processes.

Area of Science:

  • Biochemistry
  • Cell Biology
  • Vascular Biology

Context:

  • Microparticles (MPs) are small vesicles originating from activated or apoptotic cells.
  • MPs are quantifiable in peripheral blood, reflecting their cell of origin.
  • They carry information between cells and influence inflammatory and coagulatory pathways.

Purpose:

  • To explain the origin and nature of microparticles.
  • To highlight the diagnostic potential of MPs in assessing cellular function.
  • To underscore the role of MPs in vascular disease pathophysiology.

Summary:

  • Microparticles (MPs) are cell-derived vesicles released from activated or apoptotic cells.
  • Their composition allows for assignment to the parent cell, indicating its functional status.
  • MPs mediate intercellular communication and contribute to inflammation and coagulation.

Impact:

  • MPs serve as valuable surrogate markers for disease activity in acute and chronic vascular conditions.
  • Understanding MP function is crucial for elucidating the pathophysiology of vascular diseases.
  • Quantification of MPs offers insights into cellular health and disease progression.

Related Concept Videos

Peripheral Artery Disease I: Introduction01:30

Peripheral Artery Disease I: Introduction

Peripheral artery disease (PAD) predominantly results from atherosclerosis, which involves the accumulation of fatty deposits, or plaques, within the walls of arteries. This causes them to narrow and harden, significantly reducing blood flow. PAD predominantly affects the legs, particularly the arteries supplying the thighs and calves. In rare cases, it may involve other arteries, including those in the arms.Etiology of PAD:The principal cause of PAD is atherosclerosis, which results from fatty...
Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

Anticoagulant Drugs: Low-Molecular-Weight Heparins

Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
Regulation of Angiogenesis and Blood Supply01:24

Regulation of Angiogenesis and Blood Supply

Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits.  Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...
Coronary Artery Disease II: Pathophysiology01:26

Coronary Artery Disease II: Pathophysiology

Coronary Artery Disease (CAD) originates from a series of events that impair the function of coronary arteries, the blood vessels responsible for delivering oxygen-rich blood to the heart muscle. The pathophysiology of CAD is closely linked to atherosclerosis, a chronic inflammatory and lipid-driven condition affecting the vascular endothelium.1. Endothelial DamageThe process begins with damage to the vascular endothelium, which serves as a protective barrier between the blood and the vessel...
Inflammation01:38

Inflammation

Overview