In this issue of Blood, Boudreau et al report that activated platelets release respiratory-competent mitochondria either as free organelles or packed in platelet microparticles. Secreted phospholipase A2 IIA hydrolyzes the membrane of these free mitochondria to generate proinflammatory mediators. Results from this study are important in 3 key aspects. First, the authors show that activated plat...

Blood microparticles are vesicular structures with a diameter of 100 to 1000 nm that are present in the blood of normal subjects and in patients with various diseases. These microparticles are derived from cells that circulate in the blood and cells associated with the blood vessel wall. Microparticle membranes retain the protein receptors of their parent cells and may retain RNAs and other cyt...

Microparticles are ascribed important roles in coagulation, inflammation, and endothelial function. These processes are mandatory to safeguard the integrity of the organism, and their derangements contribute to the development of atherosclerosis and cardiovascular disease. More recently, the presumed solely harmful role of microparticles has been challenged because microparticles may also be in...

Abstract. A mathematical model of enzymes inhibition during microparticles formation has been developed. The model is based on radial substrate diffusion through diffusion layer that surrounds microparticle. The inhibition of enzymes was explained by enzyme adsorption on surface of the microparticles and substrate diffusion limitation through the diffusion layer. The diffusion module is depende...

INTRODUCTION Activated platelets generate microparticles. Increased platelet microparticles occur in acute myocardial infarction (AMI) and contribute to intracoronary thrombosis and subsequent myocardial injury. This study aimed to investigate the impact of platelet microparticles on intracoronary thrombosis by assessing the relationship between platelet microparticles and the extent of myocard...

The design of significant and powerful standing surface acoustic wave (SSAW) microfluidic device for microparticles separation for biomedical applications is depending on the dimensions of microchannels for the collecting microparticles. For this purpose, precise calculations of the displacement of microparticles in the working area of SSAW microfluidic device are required. In this paper, the t...

We have described a new and promising strategy for the fabrication of composite and porous photonic crystal microparticles that combines the self-assembly of colloidal particles with photolithography techniques. We fabricated silica/SU-8 composite microparticles with photonic bandgaps via four steps: (1) deposition of the silica colloidal crystals on the photoresist, (2) embedding of the colloi...

Purpose: To formulate solid lipid microparticles (SLM) of loratadine (LRT) for the treatment of allergic reactions via the nasal route. Methods: Microparticles were prepared by emulsion congealing technique. The drug content of microparticles was analysed. Drug/excipient compatibility and crystallinity characteristics of microparticles were investigated by Fourier Transform Infrared Spectroscop...

An optical technique to characterize the accretion of material by microparticles is described. Experiments on the absorption of water vapor by single levitated polystyrene microparticles are reported as examples of an application of the technique. The optical resonant frequencies of the microparticles are perturbed by the accretion of material and the observed shifts are used to characterize th...

Microparticles are small fragments (0.1-1.0 μm) of cellular membrane which are shed by cells under conditions of stress. As levels of circulating microparticles are elevated in disease, there has been significant interest in their assessment and quantification under pathological conditions. Here we describe a protocol for the isolation of microparticles from plasma samples and their characteriz...