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Published in: Arthritis Research & Therapy 1/2016

Open Access 01-12-2016 | Research article

Altered lipoproteins in patients with systemic lupus erythematosus are associated with augmented oxidative stress: a potential role in atherosclerosis

Authors: Jin Kyun Park, Jae-Yong Kim, Jin Young Moon, Eun Young Ahn, Eun Young Lee, Eun Bong Lee, Kyung-Hyun Cho, Yeong Wook Song

Published in: Arthritis Research & Therapy | Issue 1/2016

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Abstract

Background

To examine the structural and oxidative properties of lipoproteins from patients with systemic lupus erythematosus (SLE).

Methods

The lipid profiles of 35 SLE patients and 15 healthy controls (HCs) were compared. Oxidation status, susceptibility to oxidation, and structural integrity of low-density lipoprotein (LDL) were determined by measuring malondialdehyde (MDA), de novo formation of conjugated dienes in the presence of CuSO4, and mobility on gel electrophoresis, respectively. In vitro foam cell formation and the oxidative potential in zebrafish embryos were examined.

Results

LDL levels in SLE patients and HCs were similar (p = 0.277). LDL from SLE patients was more fragmented than that from HCs. In addition, LDL from SLE patients was more oxidized than LDL from HCs (p < 0.001) and more susceptible to de novo oxidation (p < 0.001) in vitro. THP-1 cells engulfed more LDL from SLE patients than LDL from HCs (p < 0.001). LDL from SLE patients, which was injected into zebrafish embryos, induced a higher degree of oxidation and a higher mortality than LDL from HCs (both p < 0.001). The survival of embryos treated with oxidized LDL was significantly better in the presence of HDL3 from HCs than that from SLE patients (all p < 0.001).

Conclusions

Lipoproteins from SLE patients exhibited greater oxidative potential, which might contribute to accelerated atherosclerosis in SLE.
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Metadata
Title
Altered lipoproteins in patients with systemic lupus erythematosus are associated with augmented oxidative stress: a potential role in atherosclerosis
Authors
Jin Kyun Park
Jae-Yong Kim
Jin Young Moon
Eun Young Ahn
Eun Young Lee
Eun Bong Lee
Kyung-Hyun Cho
Yeong Wook Song
Publication date
01-12-2016
Publisher
BioMed Central
Published in
Arthritis Research & Therapy / Issue 1/2016
Electronic ISSN: 1478-6362
DOI
https://doi.org/10.1186/s13075-016-1204-x

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