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Relationships between serum lipid,lipoprotein,triglyceride-rich lipoprotein,and high-density lipoprotein particle concentrations in post-renal transplant patients

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2010年第4期11卷 249-257页

作者： elzbieta kimak Magdalena HALABI Iwona BARANOWICZ-GASZCZYK Department of Laboratory Diagnostics Medical University of Lublinul. Chod■ki 120-093 LublinPoland Department of Nephrology Medical University of LublinJaczewskiego 820-093 LublinPoland

Objective:Disturbances in lipid and lipoprotein profiles in patients after kidney transplantation (Tx) are still not understood. Methods:Serum levels of lipids,lipoprotein,triglyceride-rich lipoproteins (TRLs),and high-density lipoprotein (HDL) particles were determined,lipid and lipoprotein ratios were calculated,and their relationships in Tx patients with hypertriglyceridemia (HTG) and lower apolipoprotein AI (apoAI) concentration were examined. Serum lipid and lipoprotein levels were measured in 109 Tx patients and 89 healthy subjects. HDL particle levels were de-termined by enzyme-linked immunosorbent assay (ELISA). Results:Tx patients had disturbed concentration,com-position,and metabolism of TRLs and HDL particles. Multivariance analysis showed significant and positive correlation between HDL cholesterol/apoAI (HDL-C/apoAI) and HDL-C/HDL ratios,which indicates that both ratios could sensi-tively reflect changes in the HDL subclasses and their distribution into smaller size particles. In Tx patients,the de-creased HDL-C/apoAI ratio indicates that,along with the decreased apoAI concentration,the HDL-C level is de-creased. However,a low HDL-C/HDL ratio indicates that HDL particles in Tx patients transport lesser content of HDL-C but more triglyceride (TG) (high TG/HDL ratio),and thus are hypercatabolized and removed; therefore,con-centration of HDL particles in serum was decreased. Conclusion:The decrease of HDL-C/apoAI ratio seems to be a good marker of HDL subclass distribution into smaller size particles.

关键词： Lipid Lipoprotein High-density lipoprotein particle Triglyceride-rich lipoprotein Renal transplantation

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Association between moderately oxidized low-density lipoprotein and high-density lipoprotein particle subclass distribution in hemodialyzed and post-renal transplant patients

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2011年第5期12卷 365-371页

作者： elzbieta kimak Magdalena HALABI Iwona BARANOWICZ-GASZCZYK Janusz SOLSKI Andrzej KSIAZEK Department of Laboratory Diagnostics Medical University of Lublin Department of Nephrology Medical University of Lublin

Disturbances in the metabolism of lipoprotein profiles and oxidative stress in hemodialyzed （HD） and post-renal transplant （Tx） patients are proatherogenic, but elevated concentrations of plasma high-density lipoprotein （HDL） reduce the risk of cardiovascular disease. We investigated the concentrations of lipid, lipoprotein, HDL particle, oxidized low-density lipoprotein （ox-LDL） and anti-ox-LDL, and paraoxonase-1 （PON-1） activity in HD （n=33） and Tx （n=71） patients who were non-smokers without active inflammatory disease, liver disease, diabetes, or malignancy. HD patients had moderate hypertriglyceridemia, normocholesterolemia, low HDL-C, apolipoprotein A-I （apoA-I） and HDL particle concentrations as well as PON-1 activity, and increased ox-LDL and anti-ox-LDL levels. Tx patients had hypertriglyceridemia, hypercholesterolemia, moderately decreased HDL-C and HDL particle concentrations and PON-1 activity, and moderately increased ox-LDL and anti-ox-LDL levels as compared to the reference, but ox-LDL and anti-ox-LDL levels and PON-1 activity were more disturbed in HD patients. However, in both patient groups, lipid and lipoprotein ratios （total cholesterol （TC）/HDL-C, LDL-C/HDL-C, triglyceride （TG）/HDL-C, HDL-C/non-HDL-C, apoA-I/apoB, HDL-C/apoA-I, TG/HDL） were atherogenic. The Spearman＇s rank coefficient test showed that the concentration of ox-LDL correlated positively with HDL particle level （R=0.363, P=0.004）, and negatively with TC （R=-0.306, P=0.012）, LDL-C （R=-0.283, P=0.020）, and non-HDL-C （R=-0.263, P=0.030） levels in Tx patients. Multiple stepwise forward regression analysis in Tx patients demonstrated that ox-LDL concentration, as an independent variable, was associated significantly positively with HDL particle level. The results indicated that ox-LDL and de- creased PON-1 activity in Tx patients may give rise to more mildly-oxidized HDLs, which are less stable, easily undergo metabolic remodeling, generate a greater number of smaller pre-13-HDL particle

关键词： Lipids Lipoproteins Paraoxonase-1 (PON-1) activity Oxidized low-density lipoprotein (ox-LDL) High-density lipoprotein (HDL) particles Post-renal transplant Hemodialysis

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