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1.
【目的】探讨载脂蛋白E(apolipoprotein E,ApoE)基因多态性与广州市中老年人群血脂水平的关系,以期为进一步研究提供基础和线索。【方法】采用等位基因特异性多重聚合酶链反应(ARMS.PCR)技术对624名40~65岁广州居民进行ApoE基因多态性检测,分析人群ApoE基因频率分布特点,并比较分析不同ApoE基因型血脂水平的关系。【结果】共检出6种基因型,以E3/3型最为常见,占67.95%,其次是E2/3和E3/4,分别占14.74%和13.62%.E2,4、E4,4和E2/2三种基因型分别占1.76%、l.12%和0.80%;等位基因以ε3分布频率最高.为82.13%,ε2、ε4等位基因频率分别为9.05%和8.81%;男性和女性ApoE基因型分布无差异。ε2等位基因携带者的TC、LDL、ApoB和LDL.C/HDL.C水平显著低于ε3和ε4等位基因携带者(allP〈0.05),而ApoAl/ApoB则显著高于ε3、ε4等位基因携带者(P〈0.01)。【结论】ε2等位基因携带者的血浆TC、LDL及ApoB水平较低,ε2等位基因有利于个体血脂维持在较理想水平。  相似文献   

2.
张德忠  贺侠  厉永伟 《浙江医学》2003,25(9):513-515,526
目的:探讨脑淀粉样血管病性出血(CAAH)与载脂蛋白E(ApoE)基因多态性的关系。方法:应用聚合酶链反应--限制性长度多态技术(PCR-RFLP)检测了112例脑淀粉样血管病性出血患者(患者组)和120例健康志愿者(对照组)的ApoE基因和等位基因,同时检测他们的血脂、脂蛋白和载脂蛋白等。结果患者组Apo E基因型ε2/2、ε2/3、ε2/4、ε3/3、ε3/4和ε4/4的频率分别为1.8%、46.4%、8.9%、19.6%、19.6%和3.6%,Apo E等位基因ε2、ε3和ε4的频率依次为29.5%、52.7%和17.8%;而对照组分别为1.7%、15.0%、3.3%、63.3%、16.7%、0.10.8%、79.2%和10.0%;两组之间的差别具有显著性意义(均P=0.0001)。与对照组相比较,患者组ApoE基因ε2/3和等位基因ε2的频率明显增高,差别具有显著性意义(均P=0.0001);而ε3/3、ε3的频率则明显降低,差别具有显著性意义(均P=0.0001);ApoEe基因型2/3和ApoE等位基因e2的相对危险度及其95%可信区间分别为4.911(2.632~9.163)和3.438(1.700~6.955)。结论:ApoE等位基因ε2在CAAH患者中出现的频率显著增高,很可能是引发CAAH潜在的危险因子。  相似文献   

3.
载脂蛋白E基因多态性与血脂代谢的关系   总被引:4,自引:0,他引:4  
目的 :研究载脂蛋白E基因多态性与健康人群血脂谱改变的关系。方法 :随机选择 1 68例江苏地区无血缘关系健康汉族人群 ,聚合酶链反应扩增ApoE基因包含编码 1 1 2及 1 58多态位点的片段 ,CfoI酶切后检测ApoE基因型。分析各基因型及等位基因对血脂、载脂蛋白及脂蛋白 (a)的影响。结果 :载脂蛋白E各等位基因血清总胆固醇 (TC)、低密度脂蛋白胆固醇 (LDL C)及载脂蛋白B(ApoB)水平由高到低依此为ε4>ε3>ε2 。ε2 等位基因具有明显的降低TC、LDL C和ApoB的作用 ;而ε4等位基因的作用正相反。结论 :载脂蛋白E基因多态性是个体间血脂谱差异的独立遗传因素。  相似文献   

4.
目的:研究中国人群中载脂蛋白E等位基因型与阿尔茨海默病的关联。方法:利用PCR和限制性内切酶酶解,分析阿尔茨海默病患者及正常老年人载脂蛋白E各等位基因、基因型的频率。结果:ApoEε2、ApoEε3、ApoEε4这三个等位基因出现的次数(和频率)在56例散发性阿尔茨海默病(AD)患者中分别3(2.7%)、84(75.0%)、25(22.3%),而在67例健康对照中分别为9(6.7%)、115(85.8%)、10(7.5%)。ApoEε4等位基因在AD患者中出现的频率明显高于对照组,统计学处理说明其差异有显著性(χ^2=10.99,P<0.01,OR=3.59,95%CI=1.54-8.41);ApoEε3等位基因在AD组中出现的频率低于对照组,两组中的差异也有统计学意义(P<0.05)。结论:ApoEε4等位基因是AD的危险因素,ApoEε3等位基因在AD的发生中可能具有一定保护作用。  相似文献   

5.
目的探讨绝经后妇女肾虚证与载脂蛋白E(apolipoprotein E,ApoE)基因多态性的相关性。方法以80例绝经后肾虚证妇女及65例绝经后无肾虚证妇女为研究对象,以ApoE基因为候选基因,运用限制性片段长度多态性检测ApoE基因型。结果肾虚组人群ApoE基因型ε2/ε3、ε2/ε4、ε3/ε3、ε3/ε4和ε4/ε4频率分别为11.25%、8.75%、58.75%、11.25%、10.00%,对照组人群ApoE基因型ε2/ε3、ε2/ε4、ε3/ε3、ε3/ε4、ε4/ε4频率分别为15.38%、6.15%、69.23%、9.24%、0;肾虚组人群ApoE等位基因ε2、ε3、ε4频率分别为10.00%、70.00%、20.00%,对照组ε2、ε3、ε4频率分别为10.76%、81.55%、7.69%;肾虚组ApoE等位基因ε4频率明显高于正常对照组(χ^2=4.386,P〈0.05)。结论ApoE等位基因ε4频率升高与绝经后妇女肾虚证相关,可能是肾虚证的危险因子;ApoE基因型ε4/ε4是绝经后妇女肾虚证一个有用的标志物。  相似文献   

6.
目的探讨载脂蛋白E(apolipoprotein E,ApoE)基因第四外显子多态性与血管性痴呆(Vascular dementia,VD)的关系。方法通过DNA直接测序的方法检查30例VD和30例正常老人ApoE基因第四外显子的多态性。结果ApoE基因第四外显子存在112位点T/C多态和158位点C/T的多态,未发现新的单核苷酸多态性(single nucleotide polymorphism,8NP)。ApoEε4等位基因频率(11.7%,8.5%)及ε4/4,ε3/4,ε2/4基因型合并后其基因型频率(22%,16.7%)在VD和对照组之间无显著差异(x^2=0.111,p〉0.05;x^2=0.759,p〉0.05);VD组ε2等位基因频率与对照组相比差异不明显。结论结果提示ApoEε4等位基因不是本地区老年人群血管性痴呆的危险因素。  相似文献   

7.
目的 探讨单纯性肥胖儿童载脂蛋白 (Apo)E基因多态性的分布及其对血脂、脂蛋白、载脂蛋白的影响。方法 选择 6~ 14岁单纯性肥胖儿童 4 0例和健康儿童 4 2例。受试者禁食 12h ,抽取外周静脉血 ,测定血清中甘油三酯 (TG) ,总胆固醇 (TC) ,高密度脂蛋白胆固醇 (HDL C) ,低密度脂蛋白胆固醇 (LDL C) ,载脂蛋白A1(ApoA1) ,载脂蛋白B10 0 (ApoB10 0 )浓度。应用改良的聚合酶链式反应 -限制性片段长度多态性 (PCR RFLP)分析及聚丙烯酰胺凝胶电泳方法对单纯性肥胖及健康儿童ApoE基因型进行分析。结果 本实验检出 4种ApoE基因型 ,健康及肥胖儿童ApoE等位基因频率分布不均 ,以ε3 为最常见。与健康儿童比较 ,肥胖儿童ε4等位基因频率增高 ,差异有显著性 (P <0 .0 5 )。ApoE基因多态性影响健康及肥胖儿童的血脂水平。结论 单纯性肥胖儿童有ApoE基因多态性的变化 ,且明显影响小儿血浆脂类代谢。  相似文献   

8.
血液透析患者载脂蛋白E基因多态性与血脂水平检测   总被引:1,自引:0,他引:1  
目的 探讨血液透析患者脂代谢紊乱的临床特征及载脂蛋白(Apo)E基因多态性对脂代谢的影响。方法 采用生化方法检测血液透析组(112例血液透析患者)和对照组(372名健康体检者)的血清总胆固醇(TC)、三酰甘油(TG)、高密度脂蛋白胆固醇(HDL—C)、低密度脂蛋白胆固醇(LDL—C)、载脂蛋白(Apo)A1、ApoB、ApoE和脂蛋白(Lp)(a)水平,采用多聚合酶链反应—限制性片断长度(PCR—RFLP)法检测ApoE基因多态性。结果 与对照组相比,血液透析组脂代谢紊乱主要表现为血清TG水平显著增高,高于正常者33.0%;HDL—C水平显著降低,低于正常者10.4%。相关分析显示,TG水平与血清白蛋白水平、透析时体外循环血流量显著相关;HDL—C与尿素清除指数(KT/V)显著相关。血液透析组中,高血压的发生率为73.6%,心血管疾病为25.0%。血液透析组中,伴心血管疾病者的TG水平显著高于无心血管疾病者,伴高血压者与无高血压者血脂水平的差异无显著性。ApoE基因多态性检测结果显示,ApoE基因型ε3/3及等位基因ε3发生频率最高。血液透析组与对照组的差异无显著性。对照组与血液透析组的ApoE基因型ε3/4 ε4/4者TC、TG、LDL—C水平较高。结论 血液透析患者脂代谢紊乱主要表现为血清TG、ApoB水平显著增高,HDL—C等指标显著降低。伴心血管并发症的患者TG水平显著高于无并发症者。TG水平与血清白蛋白水平及透析时体外循环血流量显著相关;HDL—C与KT/V显著相关。血液透析患者ApoE等位基因ε4的携带者易发生脂代谢紊乱。  相似文献   

9.
中国人Ⅱb型高脂蛋白血症apoE基因多态性的研究   总被引:3,自引:0,他引:3  
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。  相似文献   

10.
目的:研究河南汉族人群中载脂蛋白E(ApoE)基因型和等位基因频率以及ApoE表型与血脂水平之间的关系。方法:运用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)方法检测了317例健康人的ApoE基因型,按标准酶法和免疫学方法测定血脂和载脂蛋白。结果:研究对象的ε2,ε3和ε4等位基因频率分别为0.068、0.869和0.063,与中国其他地区汉族人群比较差异无显著性。携带ε4等位基因的个体具有较高的TC及LDL-C水平。通过人种间比较发现ε4等位基因频率在白种人群中较高。结论:黄种人群ε4等位基因频率较白种人低;ApoE基因多态性影响血中胆固醇水平。  相似文献   

11.
Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P< 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P< 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.  相似文献   

12.
Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P < 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (>0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P <0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P < 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.  相似文献   

13.
Objective: To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods: SD rats served as both donors and recipients. 4℃ sodium lactate Ringer's was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava (IVC) inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results: Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion: This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.  相似文献   

14.
Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.  相似文献   

15.
Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.  相似文献   

16.
A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care(~'4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.  相似文献   

17.
Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.  相似文献   

18.
Journal of Nanjing Medical University (English Edition) JNMU, sponsored by Nanjing Medical University, was established in 1987. It is a bimonthly comprehensive English medical journal published locally and abroad.Since 2007, Journal of Nanjing Medical University (English Edition )was granted Elsevier the full publishing and distribution rights worldwide for the Electronic Edition, excluding the People's Republic of China.  相似文献   

19.
Objective To measure Derpl and Blot5 allergen levels in asthmatics' homes in Hongkong.Methods Seventy houses were enrolled for a mite indoor environment study. Dust samples were obtained from two sites of each patients' house: bed and floor. Derpl and Blot5 levels were quantified by a two-site monoclonal antibody-based ELISA technique.Results The levels of Derpl allergens found in bed (geometric mean (GM) 3.43 μg/g of dust; 95%CI, 1.89-4.96 μg/g)and on the floor (GM 1.12 μg/g of dust; 95%CI, 0.71-1.53 μg/g) indicated significant differences (P=0.005). However, the levels of Blot5 allergens found in bed (GM 19.00 μg/g of dust; 95%CI, 0.89-38.90 μg/g) and on the floor (GM 6.14 μg/g of dust; 95%CI, 0.40-11.90 μg/g) showed no statistically significant difference. In addition, in regards to the exposure index for Derpl and Blot5 allergens found in bed and on the floor, 17.6% in bed and 8.6% on the floor had levels of Blot5 ≥ 10 μg/g of dust, higher than those obtained for Derp1 (7.2% and 0% in bed and on the floor respectively, P< 0.05); higher percentages in bed and on the floor (25.0% and 35.7%) were observed for levels of Blot5 =0 μg/g of dust as compared with Derpl in bed and on the floor (4.3% and 14.5% respectively, P< 0.05).Conclusions Derpl and Blot5 are the major allergens found in this regional study, Blot5 is a more potent allergen in Hongkong, probably reflecting the high level of exposure to Blomia tropicalis (Bt). Bt and Dermatophagoides pteronyssinus (Dp) allergens should be included for precise diagnosis and effective immuno-therapeutic treatment of mite allergy in Hongkong.  相似文献   

20.
ANTI-PROLIFERATION EFFECT OF ORIDONIN ON HL-60 CELLS AND ITS MECHANISM   总被引:4,自引:0,他引:4  
Objcetive To investigate the anti-proliferation effect of oridonin on leukemic HL-60 cells and its mechanism. Methods HL-60 cells in vitro in culture medium were given different concentrations of oridonin. The inhibitory rate of cells were measured by microculture tetrazolium (MTT) assay, cell apoptotic rate was detected by flow cytometry (FCM), morphology of cell apoptosis was observed by hoechst 33258 fluorescence staining, and the activity of telomerase was detected using telomere repeat amplification protocol (TRAP) PCR-ELISA before and after apoptosis occurred. Results Oridonin could decrease telomerase activity, inhibit growth of HL-60 cells, and cause apoptosis significantly. The suppression was both in time- and dose-dependent manner. Marked morphological changes of cell apoptosis including condensation of chromatin and nuclear fragmentation were observed clearly by hoechst 33258 fluorescence staining especially after cells were treated 48-60 hours by oridonin. Conclusions Oridonin has apparent anti-proliferation and apoptotic effects on HL-60 cells in vitro, decreasing telomerase activity of HL-60 cells may be one of its most important mechanisms. These results will provide strong laboratory evidence of oridonin for clinical treatment of acute leukemia.  相似文献   

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