Psoriasis decreases the anti-oxidation and anti-inflammation properties of high-density lipoprotein |
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| Institution: | 1. Department of Dermatology, The Second Affiliated Hospital of Harbin Medical University, Harbin 150081, China;2. Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of Atherosclerosis, Taishan Medical University, Shandong 271000, China;1. Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, Okayama 719–1197, Japan;2. Department of Biochemistry, Gunma University Graduate School of Medicine, Gunma 371–8511, Japan;3. Department of Respiratory Care & Sleep Control Medicine, Kyoto University Graduate School of Medicine, Kyoto 606–8501, Japan;4. Department of Pharmacology, Kyoto University Graduate School of Medicine, Kyoto 606–8501, Japan;5. Structural Biophysics Laboratory, RIKEN SPring-8 Center, Harima Institute, Hyogo 679–5148, Japan;6. Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, Kanagawa 252–5258, Japan;7. Department of Food and Nutrition, Kyoto Women''s University, Kyoto 605–8501, Japan |
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| Abstract: | Psoriasis is a chronic inflammatory skin disease, which has been linked to dyslipidemia with potential functional impairment of lipoproteins. This cross-sectional study was designed to characterize the biological activities of plasma lipoproteins in 25 patients with psoriasis and 25 age- and sex-matched healthy controls.In the present study, we found that plasma levels of high-density lipoprotein (HDL) cholesterol were decreased in the psoriasis group compared to healthy controls. The malondialdehyde (MDA) content in plasma, in HDL3 and in low-density lipoprotein (LDL) were increased. However, the activity of plasma paraoxonase-1 (PON-1) decreased in psoriasis and negatively correlated with the psoriasis area and severity index (PASI). Moreover, plasma levels of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) were increased in psoriasis and positively correlated with the PASI. High-sensitivity C-reactive protein (hs-CRP) was increased in psoriasis, but did not reach significance when correlated with PASI. In vitro tests displayed that the functionalities of HDL3 isolated from psoriatic patients significantly decreased, which were assessed in four independent ways, namely (1) protection against LDL oxidation, (2) inhibition of tumor necrosis factor-α (TNF-α) induced monocyte adherence to endothelial cells, (3) prevention of oxidized low density lipoprotein (ox-LDL) induced monocyte migration, and (4) protection of endothelial cells from TNF-α induced apoptosis. Further, pro-oxidative and pro-inflammatory properties of LDL isolated from psoriatic patients were increased. In conclusion, the biological activities of psoriatic lipoproteins are impaired in both HDL and LDL, which may provide a link between psoriasis and cardiovascular disease. |
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