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dc.contributor.authorJames, Philip
dc.contributor.authorConnolly, Katherine D.
dc.contributor.authorWillis, Gareth R.
dc.contributor.authorDatta, Dev B.N.
dc.contributor.authorEllins, Elizabeth A.
dc.contributor.authorLadell, Kirsten
dc.contributor.authorPrice, David A
dc.contributor.authorGuschina, Irina A.
dc.contributor.authorRees, D. Aled
dc.identifier.citationConnolly, K.D., Willis, G.R., Datta, D.B., Ellins, E.A., Ladell, K., Price, D.A., Guschina, I.A., Rees, D.A. and James, P.E. (2014) 'Lipoprotein-apheresis reduces circulating microparticles in individuals with familial hypercholesterolemia', Journal of Lipid Research, 55(10), pp.2064-2072.en_US
dc.descriptionThis article was published in Journal of Lipid Research on 13 August 2014 (online), available at Author's choice paid open accessen_US
dc.description.abstractLipoprotein-apheresis (apheresis) removes LDL-cholesterol in patients with severe dyslipidemia. However, reduction is transient, indicating that the long-term cardiovascular benefits of apheresis may not solely be due to LDL removal. Microparticles (MPs) are submicron vesicles released from the plasma membrane of cells. MPs, particularly platelet-derived MPs, are increasingly being linked to the pathogenesis of many diseases. We aimed to characterize the effect of apheresis on MP size, concentration, cellular origin, and fatty acid concentration in individuals with familial hypercholesterolemia (FH). Plasma and MP samples were collected from 12 individuals with FH undergoing routine apheresis. Tunable resistive pulse sensing (np200) and nanoparticle tracking analysis measured a fall in MP concentration (33 and 15%, respectively; P < 0.05) pre- to post-apheresis. Flow cytometry showed MPs were predominantly annexin V positive and of platelet (CD41) origin both pre- (88.9%) and post-apheresis (88.4%). Fatty acid composition of MPs differed from that of plasma, though apheresis affected a similar profile of fatty acids in both compartments, as measured by GC-flame ionization detection. MP concentration was also shown to positively correlate with thrombin generation potential. In conclusion, we show apheresis nonselectively removes annexin V-positive platelet-derived MPs in individuals with FH. These MPs are potent inducers of coagulation and are elevated in CVD; this reduction in pathological MPs could relate to the long-term benefits of apheresis.en_US
dc.publisherAmerican Society for Biochemistry and Molecular Biologyen_US
dc.relation.ispartofseriesJournal of Lipid Research;
dc.rightsCreative Commons Attribution Unported Licence
dc.subjectextracellular vesiclesen_US
dc.subjecttracking analysisen_US
dc.subjecttuneable resistive pulse sensingen_US
dc.subjectflow cytometryen_US
dc.subjectfatty acidsen_US
dc.titleLipoprotein-apheresis reduces circulating microparticles in individuals with familial hypercholesterolemiaen_US

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Creative Commons Attribution Unported Licence
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