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Association among retinol-binding protein 4, small dense LDL cholesterol and oxidized LDL levels in dyslipidemia subjects
Authors:Wu Jia  Shi Yong-hui  Niu Dong-mei  Li Han-qing  Zhang Chun-ni  Wang Jun-jun
Institution:Department of Biochemistry, Jinling Hospital, Clinical School of Medicine, Nanjing University, 210002, Nanjing, PR China.
Abstract:ObjectivesTo investigate retinol-binding protein 4 (RBP4), small dense low-density lipoprotein cholesterol (sdLDL-C) and oxidized low-density lipoprotein (ox-LDL) levels and their associations in dyslipidemia subjects.Design and methodsWe determined RBP4, sdLDL-C, ox-LDL levels in 150 various dyslipidemia subjects and 50 controls. The correlation analysis and multiple linear regression analysis were performed.ResultsThe RBP4, sdLDL-C and ox-LDL levels were found increased in various dyslipidemia subjects. The sdLDL-C levels were positively correlated with RBP4 (r = 0.273, P = 0.001) and ox-LDL (r = 0.273, P = 0.001). RBP4 levels were also correlated with ox-LDL (r = 0.167, P = 0.043). The multiple regression analysis showed that only sdLDL-C was a significant independent predictor for RBP4 (β coefficient = 0.219, P = 0.009; adjusted R2 = 0.041) and ox-LDL (β coefficient = 0.253, P = 0.003; adjusted R2 = 0.057) levels, respectively.ConclusionsThe independent associations of sdLDL-C with RBP4 and ox-LDL were observed in dyslipidemia subjects. RBP4 may play an important role in lipid metabolism of atherosclerosis, particularly in formation of sdLDL.
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