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Increased levels of microparticles originating from endothelial cells, platelets and erythrocytes in subjects with metabolic syndrome: Relationship with oxidative stress
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2011 (engelsk)Inngår i: NMCD. Nutrition Metabolism and Cardiovascular Diseases, ISSN 0939-4753, E-ISSN 1590-3729, Vol. 21, nr 9, s. 665-671Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Background and aims: The Metabolic Syndrome (MetS) is associated with increased cardiovascular risk. Circulating microparticles (MP) are involved in the pathogenesis of atherothrombotic disorders and are raised in individual with CVD. We measured their level and cellular origin in subjects with MetS and analyzed their associations with 1/anthropometric and biological parameters of MetS, 2/inflammation and oxidative stress markers.

Methods and results: Eighty-eight subjects with the MetS according to the NCEP-ATPIII definition were enrolled in a bicentric study and compared to 27 healthy controls. AnnexinV-positive MP (TMP), MP derived from platelets (PMP), erythrocytes (ErMP), endothelial cells (EMP), leukocytes (LMP) and granulocytes (PNMP) were determined by flow cytometry. MetS subjects had significantly higher counts/mu l of TMP (730.6 +/- 49.7 vs 352.8 +/- 35.6), PMP (416.0 +/- 43.8 vs 250.5 +/- 23.5), ErMP (243.8 +/- 22.1 vs 73.6 +/- 19.6) and EMP (7.8 +/- 0.8 vs 4.0 +/- 1.0) compared with controls. LMP and PNMP were not statistically different between groups. Multivariate analysis demonstrated that each criterion for the MetS influenced the number of TMP. Waist girth was a significant determinant of PMP and EMP level and blood pressure was correlated with EMP level. Glycemia positively correlated with PMP level whereas dyslipidemia influenced EMP and ErMP levels. Interestingly, the oxidative stress markers, plasma glutathione peroxy-dase and urinary 8-iso-prostaglandin F(2) alpha, independently influenced TMP and PMP levels whereas inflammatory markers did not, irrespective of MP type.

Conclusion: Increased levels of TMP, PMP, ErMP and EMP are associated with individual metabolic abnormalities of MetS and oxidative stress. Whether MP assessment may represent a marker for risk stratification or a target for pharmacological intervention deserves further investigation.

sted, utgiver, år, opplag, sider
2011. Vol. 21, nr 9, s. 665-671
Emneord [en]
Platelets microparticles, Endothelial microparticles, Erythrocytes microparticles, Metabolic syndrome, Glutathione peroxydase, 8-Iso-prostaglandin F(2) alpha
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-160739DOI: 10.1016/j.numecd.2010.01.004ISI: 000295635700008OAI: oai:DiVA.org:uu-160739DiVA, id: diva2:452765
Tilgjengelig fra: 2011-10-31 Laget: 2011-10-31 Sist oppdatert: 2017-12-08bibliografisk kontrollert

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