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

作　　者：Elzbieta KIMAK Magdalena HALABI Iwona BARANOWICZ-GASZCZYK Janusz SOLSKI Andrzej KSIAZEK 

机构地区：[1]Department of Laboratory Diagnostics,Medical University of Lublin [2]Department of Nephrology,Medical University of Lublin

出　　处：《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》2011年第5期365-371,共7页浙江大学学报（英文版）B辑（生物医学与生物技术）

基　　金：Project(Nos.PW 55/09 and DS 41/10) supported by the Department of Laboratory Diagnostics,Medical University of Lublin,Poland

摘　　要：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-1Disturbances 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 con-centration 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.Mul-tiple 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 un-dergo metabolic remodeling,generate a greater number of smaller pre-β-HDL particles,and thus accelerate reverse cholesterol transport,which may be beneficial for Tx patients.Further stud

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 

分 类 号：R699.2[医药卫生—泌尿科学]