Association between cholesteryl ester transfer protein gene polymorphisms and variations in lipid levels in patients with coronary heart disease

Background The Taq I B, Msp I and 1405V polymorphisms of cholesteryl ester transfer protein (CETP), an important regulatory factor of lipid metabolism, have been attracted much more attention by the researchers. In this study, we investigated the associations between these 3 polymorphisms of CETP gene and variations in plasma lipid and lipoprotein levels in patients with coronary heart disease (CHD). Methods Genomic DNA was extracted from leukocytes of 203 CHD patients and 100 control subjects using the salting out method. Genotyping of the CETP gene was performed using polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP) techniques. Statistical analysis was conducted using the SPSS 10.0 software package. Results The distribution of allele and genotype frequencies of the Taq I B, Msp I, and 1405 Vpolymorphisms was similar in the CHD patient group and the control group. The B1B1 genotype of the Taq I B polymorphism was associated with significantly higher TC (P=0.039) and LDL-C (P=0.044) levels than the B2B2 genotype in CHD patients, and with significantly higher LDL-C (P=0.034) levels than the B2B2 genotype in controls. Homozygotes of the 1405V polymorphism exhibited significantly higher HDL-C levels than VV homozygotes among control subjects (P=0.023). In male CHD patients with unambiguously assigned haplotypes, B2-M2-V/B2-M2-1 patients demonstrated significantly higher HDL-C concentrations than B1-M2-V/B1-M2-1 (P=0.023) and B1-M2-V/B1-M2-V patients (P=0.047). Conclusions Genetic variations in the CETP gene may account for a significant proportion of the differences in plasma lipid and lipoprotein concentrations among the general population. The B1B1 genotype of the Taq I B polymorphism is probably a genetic risk factor for CHD in the study population.     

Effect of detoxification, removing stasis and nourishing yin method on corticosteroid-induced hyperlipidemia in patients with systemic lupus rythematosus

Objective:To observe the effect of TCM therapy for detoxification,removing stasis,and nourishing yin on corticosteroid-induced hyperlipemia in patients with systemic lupus erythematosus (SLE),and to investigate its mechanism.Methods:One hundred and seventy patients with SLE were randomly assigned to the integrative medicine group (IM group) and the Western medicine group (WM group),85 in each group.Also,30 healthy subjects selected from blood donors were enrolled in the normal control (NC) group.All patients were treated mainly with prednisone, while those in the IM group were given TCM therapy additionally,and the therapeutic course for both groups was 6 successive months.The changes of serum total cholesterol (TC),triglyceride (TG),high density lipoprotein cholesterol (HDL-G),low density lipoprotein cholesterol (LDL-C),very low density lipoprotein cholesterol (VLDL-C) and apolipoprotein A (ApoA) were determined and observed.A 2-year follow-up study was carried out in 16 patients of the WM group and 25 of the IM group.Results:Before treatment,no significant difference had been found among the three groups in the serum levels of lipids and lipoproteins.After the 6-month treatment,as compared with the WM group,the IM group showed lower levels of TC,TG,LDL-C,and VLDL-C (P<0.05 or P<0.01) and higher levels of HDL-C and ApoA (P<0.05).A similar effect was also shown by the follow-up study in the IM group (P<0.05 or P<0.01). Conclusion:TCM therapy for detoxification,removing stasis,and nourishing yin can effectively regulate the levels of serum lipids and lipoproteins in preventing and treating SLE patients with corticosteroid- induced hyperlipemia.     

Elevated Resting Heart Rate is Associated with Dyslipidemia in Middle-aged and Elderly Chinese

Objective To study the relationship between resting heart rate and blood lipid level.Methods A total of 9 415 subjects aged≥40 years were included in the present study.Their resting heart rate was monitored and their serum levels of triglyceride(TG),total cholesterol(TC),low density lipoprotein cholesterol(LDL-C)and high density lipoprotein cholesterol(HDL-C)were measured to define dyslipidemia according to the 2007 Chinese Guidelines on Prevention and Treatment of Dyslipidemia in Adults.Results The subjects were divided into group A with their resting heart rate70 beats/min,group B with their resting heart rate=70-79 beats/min,group C with their resting heart rate=80-89 beats/min,and group D with their resting heart rate≥90 beats/min.High TG,TC,and LDL-C were presented across the resting heart rate(Ptrend0.01).Multiple logistic regression analysis revealed that the risk of high TG and TC was higher in subjects with their resting heart rate≥90 beats/min than in those with their resting heart rate70 beats/min(OR=1.42;95%CI:1.16-1.74 and OR=1.33;95%CI:1.09-1.64,respectively).Conclusion Elevated resting heart rate is associated with high TG and TC in middle-aged and elderly Chinese subjects.     

THE INFLUENCE OF APOLIPOPROTEIN B AND E GENE POLYMORPHISMS ON THE RESPONSE TO SIMVASTATIN THERAPY IN PATIENTS WITH HYPERLIPIDEMIA

Objective. To investigate the effect of apolipoprotein B (apoB) and E (apoE) genetic variations on lipid profile at baseline (before treatment), and also on the subsequent response to simvastatin therapy.Methods. Eighty-eight patients with hyperlipidemia were treated with simvastatin 5mg daily. The plasma levels of total cholesterol (TC) and low-density lipoprotein cholesterol (LDL-C), triglyceride (TG) and apo B were measured pre-treatment and at the end of the 4th, 8th and 12th post-treatment week. Polymorphisms of apoB at XbaI locus and apoE were determined by restriction fragment length polymorphism (RFLP).Results. In all patients, relative frequencies of X- allele and X + allele were 0. 943 and 0. 057 for apoB gene respectively. For apoE gene the relative frequency of ε 2 allele was determined as 0. 182, ε3 as 0. 580 and ε4 as 0. 238. The reduction in TC level was more prominent in patients carrying X- allele than in those with X + allele following treatment (-23. 9% vs. -13. 6% , P < 0. 05). Co     

The Effect of Foods Containing Refined Konjac Meal on Human Lipid Metabolism

A total of 110 elderly people with hyperlipidemia were randomly assigned to one of two groups. The experimental group consumed an ordinary diet plus foods containing refined Konjac meal, and the control group consumed only the ordinary diet. The experiment was carried out for 45 days. The results indicate that for the experimental group blood levels of triglyeendes (TG), total cholesterol (TC), and low-density lipoprotein cholesterol (LDL-C) were significantly lowered (P < 0.01) at the end of the trial, whereas high-density lipoprotein cholesterol (HDL-C) and apoprotein (Al) levels were significantly elevated (P<0.01). In contrast, for the control group, the changes in the above parameters were insignificant. The differences in TC. TG, LDL-C, and HDL-C levels between the two groups were statistically significant. The effects of refined Konjac meal on lipid levels in the blood were somewhat different between patients with hyperlipidemia and subjects with risk critical values only. For the former, TG and TC were decreased by 83.8±133.5 mg/dl, and 42.4±23.4 mg/dl. respectively: but for the latter, they are decreased only by -1.1±23.1 mg/dl and 8.3± 18.2 mg/dl, respectively; the difference mentioned above is Statistically significant (P<0.01). 1990 Academic Press. Inc.     

血清脂蛋白(a)水平与冠状动脉病变的关系

目的 探讨血清脂蛋白水平与冠心病患者冠状动脉病变的关系.方法 冠状动脉造影患者323例,分为冠心病组和正常对照组,其中根据冠状动脉病变狭窄程度分为轻度、中度、重度狭窄组,根据冠状动脉病变范围分为单支病变组、双支病变组和多支病变组.分别测定其血清脂蛋白、总胆固醇、低密度脂蛋白、甘油三酯水平.结果 冠心病组血清脂蛋白、总胆固醇、低密度脂蛋白、甘油三酯水平明显高于正常对照组.其中血清脂蛋白、总胆固醇和低密度脂蛋白水平与冠状动脉病变呈正相关;双支及多支病变组明显高于对照组和单支病变组(P<0.01),中度狭窄和重度狭窄组明显高于对照组和轻度病变组(P<0.01).结论 血清脂蛋白、总胆固醇和低密度脂蛋白能够反映冠状动脉的病变情况,其水平随冠状动脉病变范围及病变程度的加重而升高,可作为预测冠状动脉病变的一个因素. Abstract： Objective To investigate the possible relationship between the serum LP(a) and coronary artery changes in patients with coronary heart disease (CHD). Methods Coronary angiography (CAG) was performed in 323 patients. The patients were divided into CHD group and control group. The serum levels of lipids were measured. According to the coronary number of stenosis, CHD group was further divided into 1-vessel group, 2-vessel group and 3-vessel group according to the degree of coronary lesion, CHD group was further divided into light stenosis group, moderate stenosis group and severe stenosis group. Results The levels of total cholesterol (TC),LP(a),LDL-C and triglyceride (TG) in CHD patients were significant higher than those in the control group. The serum levels of TC,LP(a) and LDL-C were significantly related to CHD (P<0.01).The serum levels of TC,LP(a) and LDL-C were higher in the 2-vessel group and 3-vessel group than that in the control group and 1-vessel group (P<0.01).The serum levels of TC,LP(a) and LDL-C were higher in the moderate stenosis group, severe stenosis group than that in the control group and light stenosis group(P<0.01). Conclusions The increasing of TC, LP(a) and LDL-C are associated with the stenosis degrees and lesion degrees of coronary artery in patients with CHD which indicated that TC,LP(a) and LDL-C have clinical significance for evaluating the change of degree of coronary artery lesion.     

Apolipoprotein E polymorphism and coronary heart disease.

Serum lipoproteins and apolipoproteins were analyzed in 199 patients with acute myocardial infarction (CCU group), and in 211 normal healthy individuals (control group). It was shown that serum lipoprotein abnormalities, especially elevated low density lipoprotein (LDL) levels, are closely related to atherogenesis in relatively young patients and in subjects with severe coronary lesions. The frequency of apo E4 was higher and that of E2 was lower in the CCU group than in the control group. Apo E mutants, E7 and E5, were also frequent in the CCU group. Subjects with an E3/2 phenotype had reduced LDL and increased VLDL levels, and those with an E4/3 phenotype had increased LDL levels in serum. These results suggest that apo E4 is a positive risk factor and apo E2 a negative risk factor for atherosclerosis. The action of apo E isoproteins to increase or decrease serum LDL levels may be one of the mechanisms of atherosclerosis. Furthermore, the effect of apo E isoforms on serum lipoproteins was evident even in childhood. The mutant apo E binding to LDL receptors were investigated to clarify the metabolism of apo E5 and apo E7. The affinity of apo E5 was twice that of the wild form of apo E3. Apo E7, however, had a lower receptor affinity than apo E3. Therefore, the authors postulate that individuals with apo E5 have increased risk of developing hypercholesterolemia and subsequent atherosclerosis. From the binding data of apo E7, the action of apo E7 is considered similar to that of apo E2.

     

Linkage of the cholesterol 7α-hydroxylase gene and low-density lipoprotein cholesterol conditional on apolipoprotein E association: the National Heart, Lung, and Blood Institute Family Heart Study

Background Genetic factors account for approximately 50% of the individual variation in plasma low-density lipoprotein cholesterol (LDL-C) concentrations in the general population. Several candidate genes have been proposed but their relative contributions to the variance in LDL-C are not known, except for apolipoprotein E (apoE). We report here an investigation of the relationship between LDL-C and cholesterol 7α-hydroxylase (CYP7), as well as apoE and low-density lipoprotein receptor (LDLR), three pixotal genes in LDL metabolism.Methods Our study population included more than 200 nuclear families with increased coronary heart disease (CHD) risk from the National Heart, Lung, and Blood Institute (NHLBI) Family Heart Study. Variance-component linkage methods, a measured genotype approach, and a variance-component linkage analysis conditional on a measured genotype association were used.Results The results showed significant linkage between a genetic determinant of plasma LDL-C concentrations and a polymorphism near CYP7 with its allelic variation accounting for 27% of the total LDL-C variation. There is significant association between plasma LDL-C concentrations and apoE genotypes. Conditional on the apoE association, the total LDL-C variation accounted by allelic variation of a polymorphism near CYP7 was increased significantly.Conclusion Our results suggest the apoE and CYP7 may be two important genes accounting for the genetic variation of plasma LDL-C concentrations in a population with cardiovascular diseases.     

Effects of Xuezhikang Capsule(血脂康胶囊) on Blood Lipids,Platelet Activation and Coagulation-Fibrinolysis Activity in Patients with Hyperlipidemia

Objective: To investigate the effects of Xuezhikang capsule (XZK, 血脂康胶囊) on blood lipids level, platelet activation and coagulation-fibrinolysis activity in patients with hyerlipidemia. Methods:Seventy-six patients of hyperlipidemia were randomly divided into two groups, the XZK group (n = 38) treated with XZK 600mg, taken two times per day and the Simvastatin (SIM) group (n = 38) treated with SIM 20mg per day, with the treatment lasting 8 weeks for both groups. Levels of fasting serum lipids, including total cholesterol (TC), triglyceride (TG), high and low density l ipoprotein cholesterol (HDL-C and LDL-C),plasma GMP-140, fibrinogen (FIB), tissue plasminogen activator (t-PA), plasminogen activator inhibitor type-1 (PAl-) and prothrombin time (PT) were all measured before and 8 weeks after treatment. Data were compared before and after treatment and also compared with those measured in 20 healthy subjects of control. Results: Before treantment the levels of TC, TG and LDL-C were obviously higher and HDL-C level was significantly lower in hyperlipidemia patients than those in healthy subjects ( P＜0.05 or P＜0.01). After 4-8 weeks of XZK treatment, the levels of TC, TG, LDL-C and FIB and activities of GMP-140 and PAl-1 were obviously lowered (P＜0.05 or P＜0.01). But in the SIM group there was no obvious change in FIB (P＞0.05), instead it showed obvious increase of HDL-C and decrease of TC and LDL-C after treatment ( P＜0.05 or P＜0.01). Conclusion: XZK could inhibit platelet activity and improve coagulation-fibrinolysis function, besides its lipids lowering effect.     

APOLIPOPROTEIN E GENE POLYMORPHISMS AND RISK FOR CORONARY ARTERY DISEASE IN CHINESE XINJIANG UYGUR AND HAN POPULATION

Objective To examine the relationship between apolipoprotein E (Apo E) gene polymorphism and risk of coronaryartery disease (CAD), analyzing association of polymorphism with classical risk factors.Methods A total of 124 patients (including 84 Han population and 40 Uygur population) with angiographically verified CAD or myocardial infarction were prospectively evaluated. Data referring to hypertension, diabetes, and tobacco consumption were recorded. The levels of total cholesterol (TC), high density lipoprotein (HDL) cholesterol, Apo A1 and B, and triglycerides (TG) were determined. DNA was obtained from 124 patients and 70 controls. In order to determine Apo E genotypes, DNA was PCR amplified and digested with HhaI. The genetic polymorphism of Apo E is due to three common alleles, epsilon (ε) 2, ε3, ε4, at a single autosomal gene locus. These alleles determine the six phenotypes E2/2, E3/3, E4/4,E4/2, E4/3, and E3/2.Results In Uygur population, the frequency of the ε2, ε3, and ε4 was 0.155, 0.648, and 0.197 respectively. In Han population, the frequency of the ε2, ε3, and ε4 was 0.081, 0.772, and 0.146 respectively. In the patient group, the frequency of the ε2, ε3, and ε4 was 0.060, 0.758, and 0.182 respectively. In the control group, the frequency of the ε2, ε3, and ε4 was 0.193, 0.671, and 0.136 respectively. ε2 frequency of Uygur' patients and controls was 0.050 and 0.290 respectively. Serum low density lipoprotein (LDL) cholesterol, TC, and TG values tended to decrease from the Apo E-4 phenotypes to Apo E-2phenotypes. When deletion polymorphism ofε2 was compared with the common risk factors for CAD, its risk ratio (RR) is 4.38.Conclusions These studies confirm and find that Apo E phenotype distribution in Uygur population differs significantly from that in Han population in Xinjiang. CAD patients have significantly lower ε2 allele and slightly higher ε3 or ε4 allele frequency than controls, especially in Uygur population. It shows protective effects ofε2 on CAD.     

早发冠心病患者载脂蛋白E基因多态性研究

目的:探讨载脂蛋白E(apoE)基因多态性与早发冠心病患者的关系以及对中国人血脂水平的影响。方法:选择68例年龄≤55岁的冠心病患者(CHD_1)、136例年龄≥65岁的冠心病患者(CHD_2)及136例健康对照患者,测定空腹血清甘油三酯(TG)、总胆固醇(TC)和高密度脂蛋白胆固醇(HDL-C)水平;应用PCR,HhaI内切酶消化及PAGE的方法确定apoE基因 多态性。结果:apoE3/4基因型频率和E_4等位基因频率在CHD_1组明显高于CHD_2组和健康对照组,CHD_2组和健康对照组无差别。CHD_1与对照组血脂水平无差别,而CHD_2组的TC、低密度脂蛋白胆固醇(LDL-C)明显高于CHD_1组和健康组。不同的apoE基因型TC、LDL-C的浓度存在显著性差异,按E_2(E2/2+E2/3)相似文献   

载脂蛋白E基因多态性与高脂血症的关系

目的 研究载脂蛋白Ｅ（ａｐｏＥ）基因多态性对血脂水平的影响及其与高脂血症的关系。方法 应用聚合酶链反应结合限制性片段长度多态性（ＰＣＲ－ＲＦＬＰ）检测法,测定８７例正常对照者和１６３例高脂血症患者的ａｐｏＥ基因型;血脂水平按常规方法测定。结果 共检测出４种ａｐｏＥ基因型,分别显Ｅ３／３、Ｅ４／３及Ｅ４／２。高脂血症组ａｐｏＥ４／３基因型和ε４等位基因频率均高于对照组（Ｐ〈０．０５）;不同的ａｐｏＥ等位基因间ＴＣ和ＬＤＬ－Ｃ水平存在差别,依次是ε４〉ε３〉ε２。结论 ａｐｏＥ基因多态性影响血脂的代谢水平;ε４等位基因是高脂血症的遗传易患因素之一。     

冠心病患者载脂蛋白E增强子基因多态性及其与血清脂质的关系

目的 研究载脂蛋白Ｅ内含子１内增强子元件（ＩＥ１）基因多态性与人类冠心病（ＣＨＤ）及其血脂水平的关系。方法 采用聚合酶链反应结合限制性片段长度多态方法,分析了１０８例健康人及８１例冠心病患者的ＩＥ１基因型。结果 ＣＨＤ组ａｐｏＥ ＩＥ１ Ｇ／Ｇ基因型频率（０．６０５０和Ｇ等位基因频率（０．７６５）分别显著高于对照组（０．３９８,０．６４４;Ｐ〈０．０５）;Ｇ／Ｇ基因型者血清总胆固醇高于Ｃ／Ｃ基因型     

Apolipoprotein E Alleles, Dyslipidemia,and Coronary Heart Disease

Apolipoprotein E isa kind of polymorphismprotein.Its three isoproteins in serum includingE2 ,E3,E4,are coded by three alleles in samelocus. Receptor- binding activities and metabo-lism rate vary in three isoproteins.This can re-sultin differences among individuals and be con-sidered predisposed to hyperlipidemia and coro-nary heart disease ( CHD) [1,2 ] .We believe thatitis important to investigate the relationship be-tween apo E gene and CHD and their influenceon lipids,lipoproteins and …     

普法他汀对高脂血症患者载脂蛋白E的影响

目的 :探讨普法他汀对高脂血症患者血清总载脂蛋白E(apoE)水平的影响。方法 :40例高脂血症患者每晚顿服普法他汀 2 0mg 4周 ,比较服药前后血清甘油三酯 (TG)、胆固醇 (TC)、低密度脂蛋白胆固醇 (LDL C)、高密度脂蛋白胆固醇 (HDL C)、apoA、apoB、apoE及脂蛋白 (a) [Lp(a) ]水平的变化。结果 :用药后血清TC及TG分别下降 2 0 .3%及 8.7% (P <0 .0 0 1,<0 .0 5 ) ,LDL C下降 2 3.1% (P <0 .0 1) ,apoB及apoE分别下降 12 .9%及 32 .5 % (P<0 .0 5 ,<0 .0 0 1) ,apoA1增加 7 3% (P <0 .0 5 )。apoE下降幅值分别与其自身基础和TG及LDL C基础值呈正相关(P <0 .0 1,<0 .0 1,<0 .0 5 )。HDL C呈增高趋势 ,Lp(a)改变无统计学差异。结论 :普法他汀能导致血清apoE水平显著下降其可能参与了抗动脉粥样硬化过程。     

绝经前后妇女性激素水平与血脂和免疫的关系

To investigate the relationship between sex hormone levels and blood lipids/immunity and to evaluate the therapeutical effects of nylestriol, 96 women without coronary heart disease(CHD) were studied during their perimenopausal period. The estimation of serum biochemical components included serum 17 beta-estradiol(E2), testosterone(T), total cholesterol(TC), triglyceride (TC), high density lipoprotein cholesterol(HDL-C), low density protein cholesterol(LDL-C), apolipoprotein A-I(ApoAI), apolipoprotein B(ApoB), lipoprotein (a)[Lp(a)], immunoglobulin G(IgG), and IgG antibody against cardiolipin(ACAIgG). Thirty-six postmenopausal volunteers were divided into two groups and randomized to treat with either 2 mg nylestriol or placebo. In postmenopausal women, serum levels of E2, E2/T, HDL, and ApoAI decreased, while those of T, TC, TG, LDL, ApoB, Lp(a), IgG, and ACAIgG increased. Serum level of E2 was positively correlated to HDL-C and negatively correlated to TC, ApoB, LDL, IgG, and ACAIgG. Serum level of T was positively correlated to LDL, IgG, and ACAIgG and negatively correlated to HDL. In the nylestriol group, as compared with the results before treatment, serum levels of TG, TC, LDL, IgG, and ACAIgG decreased and that of HDL-C increased after treatment. We conclude that estradiol is a protective factor of CHD, whereas testerone is a dangerous factor. After menopause, the imbalance of the estradiol/testosterone ratio increases the incidence of CHD. Nylestriol is an effective substitute for estradiol to prevent CHD in post menopausal women.     

Association of polymorphism of apolipoprotein E gene with coronary heart disease in Han Chinese

ＯｂｊｅｃｔｉｖｅＴｏｉｎｖｅｓｔｉｇａｔｅｔｈｅａｓｓｏｃｉａｔｉｏｎｂｅｔｗｅｅｎａｐｏｌｉｐｏｐｒｏｔｅｉｎＥ（ａｐｏＥ）ｇｅｎｅｐｏｌｙｍｏｒｐｈｉｓｍａｎｄｃｏｒｏｎａｒｙｈｅａｒｔｄｉｓｅａｓｅ（ＣＨＤ）ｉｎＨａｎＣｈｉｎｅｓｅ．Ｍｅｔｈ...     

冠心病痰瘀证与载脂蛋白E基因多态性关系的研究

目的:探讨冠心病(coronary heart disease, CHD)不同痰瘀证候与载脂蛋白E(apolipoprotein E, ApoE)基因第4外显子多态性的关系.方法:选择符合条件的CHD痰证、瘀证、痰瘀互阻证和非痰非瘀证(其他证型)患者200例,另选100名健康志愿者作为对照.常规检测所有样品的血脂水平.提取全血DNA,用聚合酶链反应-限制性片段长度多态性(polymerase chain reaction-restriction fragment length polymorphism, PCR-RFLP)技术检测ApoE基因型.采用SAS软件对基因多态性和痰瘀证候的辨证类型进行相关性分析.结果:(1)冠心病患者中ε4等位基因频率(19.5%)明显高于健康对照组(9.5%),具有统计学意义(P<0.05),其中尤以E 3/4基因型更为多见(P<0.01).(2)携带ε4等位基因者的总胆固醇(total cholesterol, TC)、总甘油三酯(total triglycerides, TG)和低密度脂蛋白胆固醇(low-density lipoprotein cholesterol, LDL-C)水平明显高于非携带者(P<0.01).(3)痰证特别是E3/4基因型患者中E3/4型和ε4等位基因的频率明显高于血瘀证患者(P<0.05).结论:ApoE ε4等位基因是冠心病的危险因素,携带此基因的患者与痰证关系较为密切,推测其可能是CHD痰证的主要易感基因之一.     

中国人Ⅱb型高脂蛋白血症apoE基因多态性的研究

目的 探讨中国人Ⅱb型高脂蛋白血症患者载脂蛋白E（apoE)基因多态性及其与血脂和载脂蛋白水平的关系。方法 采用聚合酶链反应－限制性酶切片段长度多态性法（PCR－RFLP）,分别对74例Ⅱb型高脂血症患者及230例血脂正常者apoE基因型、空腹血脂及载脂蛋白AⅠ、AⅡ、B100、CⅡ、CⅢ、E进行了全面分析。结果 Ⅱb型高脂血症患者的体重指数（BMI）,血清甘油三酯（TG）,总胆固醇（TC）,低密度 蛋白胆固醇（LDLC）,非高密度脂蛋白胆固醇（nHDLC),载脂蛋白AⅡ、B100、CⅡ、CⅢ、E水平及TG／HDLC比值均较对照组显著升高（P＜0．001）;血清高密度脂蛋白胆固醇（HDLC）水平及apoE/apoCⅢ比值比显著降低（P＜0．05）。Ⅱb型高脂血症组与对照组apoE基因型及等位基因频率分布均以E3／3和ε3最高,Ⅱb型高脂血症组的ε2等位基因有增高的趋势,而ε4等位基因有降低的趋势（P＞0．05）,携带ε2等位基因组血清TG、apoⅡ,apoE水平及apoE/apoCⅢ比值较E3／3基因型组显著升高,而携带ε4等位基因组血清TC、nHDLC及apoE水平较E3／3基因型组显著升高（P＜0．001）。结论 ε2及ε4等位基因与Ⅱb型高脂蛋白血症患者的血清TG、TC、nHDL,apoCⅡ及apoE水平升高有关。     

中国人Ⅱb型高脂蛋白血症apoE基因多态性的研究

目的　探讨中国人 b型高脂蛋白血症患者载脂蛋白 E(apo E)基因多态性及其与血脂和载脂蛋白水平的关系。方法　采用聚合酶链反应 -限制性酶切片段长度多态性法 (PCR- RFL P) ,分别对 74例 b型高脂血症患者及 2 30例血脂正常者的 apo E基因型、空腹血脂及载脂蛋白 A 、A 、B10 0、C 、C 、E进行了全面分析。结果　 b型高脂血症患者的体重指数 (BMI) ,血清甘油三酯 (TG) ,总胆固醇 (TC) ,低密度脂蛋白胆固醇(L DL C) ,非高密度脂蛋白胆固醇 (n HDL C) ,载脂蛋白 A 、B10 0、C 、C 、E水平及 TG/ HDL C比值均较对照组显著升高 (P<0 .0 0 1) ;血清高密度脂蛋白胆固醇 (HDL C)水平及 apo E/ apo C 比值显著降低 (P<0 .0 5 )。 b型高脂血症组与对照组 apo E基因型及等位基因频率分布均以 E3/ 3和 ε3最高 , b型高脂血症组的 ε2 等位基因有增高的趋势 ,而 ε4等位基因有降低的趋势 (P>0 .0 5 )。携带 ε2 等位基因组血清 TG、apo C 、apo E水平及 apo E/ apo C 比值较 E3/ 3基因型组显著升高 ,而携带 ε4等位基因组血清 TC、n HDL C及 apo E水平较 E3/ 3基因型组显著升高(P<0 .0 0 1) )。结论　 ε2 及 ε4等位基因与 b型高脂蛋白血症患者的血清 TG、TC、n HDL C、apo C 及 apo E水平升高有关。