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。     

载脂蛋白E基因多态性与脑梗死的相关性

目的探讨载脂蛋白E（apoE）基因多态性与脑梗死的相关性。方法采用聚合酶链反应-限制性片段长度多态性（PCR-RFLP）技术,检测40例脑梗死患者以及50例健康人的apoE基因型,同时检测不同基因型患者总胆固醇（TC）、甘油三酯（TG）、低密度脂蛋白（LDL）、高密度脂蛋白（HDL）、载脂蛋白A（apoA）、载脂蛋白B（apoB）水平。结果ε3/ε3为常见基因型。ε4等位基因频率脑梗死组（20%）明显高于正常对照组（6%）（P〈0.01）。apoEε4等位基因携带者总胆固醇、低密度脂蛋白、apoB水平比apoEε2、ε3携带者高（P〈0.05）。结论apoE基因多态性与脑梗死的发病有关,ε4基因可能为该病的危险因子,其发病机制可能是通过调控载脂蛋白E导致脂代谢紊乱。     

心脑血管疾病患者的载脂蛋白E基因多态性与血脂水平相关性

目的：探讨载脂蛋白E（apoE）基因多态性与心脑血管疾病以及血脂、脂蛋白水平的相关性。方法：以139例心脑血管疾病患者和116例对照人群为研究对象，采用聚合酶链反应酶切技术以及血脂、脂蚩白生化检测技术，分析apoE基因多态性在两组人群中分布的差异性以及与多种心脑血管疾病发生、血脂水平的相关性。结果：apoE基因多态性在对照组和病例组的分布不同，虽均以载脂蛋白83等位基因所占比例最高，但ε3在对照组中高于病例组，而ε2及ε4在病例组中高于对照组，P=0．006，差别具有显著意义；分别计算脑出血、高血压、冠心病、Ⅱ型糖尿病、脂肪肝各种合并症组中，E2／3、E3／4型所占比例均高对照组，而E3／3型所占比例均低于其在对照组中所占比例，P=0．02，差别具有显著意义；分析血脂、脂蛋白等指标，携带ε2等位基因的甘油三酯水平高于携带ε3和ε4的，携带ε4等位基因的总胆固醇等其余指标高于携带ε3和ε2的，但这一趋势并非均有统计学意义。结论：载脂蛋白ε2及ε4等位基因在心脑血管疾病人群中分布较高提示两者可能是心脑血管疾病发病的危险因素之一；ε2等位基因与甘油三酯升高呈相关趋势，“等位基因与总胆固醇、低密度脂蛋白等升高呈相关趋势。     

载脂蛋白E基因多态性对8－12岁肥胖儿童血脂的影响

目的 研究载脂蛋白E（APOE）基因多态性对单纯肥胖儿童血脂的影响。方法 检测来自本地两所小学年龄在8－12岁的108例肥胖儿童的血脂，并使用多聚酶链反应检测其APOE基因型。结果 不同APOE基因型间血脂明显不同（P＜0．01）。与E3／3基因型相比，E3／4和E4／4基因型TC、LDL－C显增高（P＜0．01），且E4/4基因型TG、APOB亦显增高（P＜0．05）；E2／3基因型则显示了较高的APOA1和TG；各基因型间高密度脂蛋白胆固醇无显性差异（P＞0．05）。多元回归分析表明ε3和ε4等位基因与TC正相关，且ε4等位基因与LDL－C正相关。结论 APOE基因多态性对肥胖儿童血脂的影响在本地肥胖儿童中存在。     

载脂蛋白E基因多态性与脑梗死的相关性

目的 探讨载脂蛋白E(apoE)基因多态性与脑梗死的相关性.方法 采用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)技术,检测40例脑梗死患者以及50例健康人的apoE基因型,同时检测不同基因型患者总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白(LDL)、高密度脂蛋白(HDL)、载脂蛋白A(apoA)、载脂蛋白B(apoB)水平.结果 ε3/ε3为常见基因型.ε4等位基因频率脑梗死组 (20%)明显高于正常对照组 (6%)(P ＜0.01).apoEε4等位基因携带者总胆固醇、低密度脂蛋白、apoB水平比apoEε2、ε3携带者高 (P ＜0.05).结论 apoE基因多态性与脑梗死的发病有关,ε4基因可能为该病的危险因子,其发病机制可能是通过调控载脂蛋白E导致脂代谢紊乱.     

正常妊娠及妊娠高血压综合征患者血清脂质和载脂蛋白的分析

目的：探讨正常妊娠和妊娠高血压综合征（妊高征）患者血脂和载脂蛋白改变。以及这些改变与妊高征发病的关系。方法：采用酶法和免疫扩散法，对28例妊高征孕妇，31例正常孕妇及24例未孕妇女血脂和载脂蛋白进行了检测。分别测定了甘油三酯（TG），胆固醇（TC），高密度脂蛋白胆固醇（HDL－C），载脂蛋白（apo)AI,B100,CⅡ，CⅢ和E，并计算非HDL－C（nHDLC)和TG/HDL-C秕值，结果：（1）与未孕妇女比较，正常妊娠36－42周妇女血清TG,apoCⅡ及apoCⅢ水平分别升高了3．5倍，2．4倍和2．8倍（P＜0．001），血清TC升高21％（P＜0．01），血清HDL－C未见明显改变，nHDL-C升高33％（P＜0．05），apoA,I,apoB100及apoE分别升高了55％，79％和77％（P＜0．001），TG／DHL－C比值显著增加（P＜0．01），（2）与未孕妇女比较，妊高征组妊娠32－42周妇女血清TG，apoCII及apo CⅢ亦分别升高2＝3倍，4．0倍和2．8倍（P＜0．01），血清TC仅升高27％（P＜0．01），HDL－C升高29％（P＜0．05），nHDL-C升高26％（P＜0．05）；apoAI,apoB100及apoE分别升高52％，90％和67％（P＜0．001），TG／HDL－C比值亦显著增加（P＜0．01），与正常妊娠组比较，妊高征组血脂和载脂蛋白水平平均未见明显差异。（3）不同程度妊高征及正常妊娠对照血脂和载脂蛋白含量的比较显示，妊高征患者各亚组血脂和载脂蛋白的含量不随病情的严重程度而升高。结论：妊娠时胎盘分泌的大量雌性激素是导致正常妊娠及妊高征患者血脂及载脂蛋白显著升高的主要原因，妊娠时血脂及载脂蛋白的升高可能与妊高征的发病无关。     

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。     

2型糖尿病患者高密度脂蛋白水平分析

目的 观察分析2型糖尿病患者高密度脂蛋白胆固醇（HDL—C）的水平变化及可能的影响机制。方法采用自动生化仪对50例健康者和100例2型糖尿病患者进行血浆总胆固醇（TC）、甘油三酯（TG）、HDL—C、低密度脂蛋白胆固醇（LDL—C）、载脂蛋白A（apoA）、载脂蛋白B（apoB）检测,比较两组间HDL—C水平变化,分析HDL—C与其他血脂及载脂蛋白指标间的关系。结果糖尿病组TG水平显著高于对照组（P〈0．05）,TC、LDL—C、apoA水平无明显差异（P〉0．05）,apoB显著高于对照组（P〈0．05）。直线相关分析显示,糖尿病组HDL—C与TC及apoA显著正相关（P〈0．05）,与TG、apoB无明显相关（P〉0．05）。结论2型糖尿病患者HDL—C水平较健康人无明显降低。其HDL—C水平主要与总胆固醇水平及构成成分apoA有关,而与TG代谢途径无明显关系。     

心脑血管疾病患者的载脂蛋白E基因多态性与血脂水平相关性

目的探讨载脂蛋白E (apoE) 基因多态性与心脑血管疾病以及血脂、脂蛋白水平的相关性.方法以139例心脑血管疾病患者和116例对照人群为研究对象,采用聚合酶链反应酶切技术以及血脂、脂蛋白生化检测技术,分析apoE基因多态性在两组人群中分布的差异性以及与多种心脑血管疾病发生、血脂水平的相关性.结果apoE基因多态性在对照组和病例组的分布不同,虽均以载脂蛋白ε3等位基因所占比例最高,但ε3在对照组中高于病例组,而ε2及ε4在病例组中高于对照组,P=0.006,差别具有显著意义;分别计算脑出血、高血压、冠心病、II型糖尿病、脂肪肝各种合并症组中,E2/3、E3/4型所占比例均高对照组,而E3/3型所占比例均低于其在对照组中所占比例,P=0.02,差别具有显著意义;分析血脂、脂蛋白等指标,携带ε2等位基因的甘油三酯水平高于携带ε3和ε4的,携带ε4等位基因的总胆固醇等其余指标高于携带ε3和ε2的,但这一趋势并非均有统计学意义.结论载脂蛋白ε2及ε4等位基因在心脑血管疾病人群中分布较高提示两者可能是心脑血管疾病发病的危险因素之一;ε2等位基因与甘油三酯升高呈相关趋势,ε4等位基因与总胆固醇、低密度脂蛋白等升高呈相关趋势.     

2型糖尿病患者血清载脂蛋白AⅠ、AⅡ、 B100、CⅡ、CⅢ、E含量分析

目的　探讨2型糖尿病患者血清中载脂蛋白(apo)AⅠ、AⅡ、B100、CⅡ、CⅢ、E含量的改变特点。方法　对143例2型糖尿病患者(其中合并冠心病20例,合并高甘油三酯血症66例,合并高胆固醇血症55例)和127例非糖尿病对照进行了空腹12小时后血糖、胰岛素、甘油三酯(TG)、胆固醇(TC)、高密度脂蛋白胆固醇及apoAⅠ、AⅡ、B100、CⅡ、CⅢ、E含量的测定。结果　与非糖尿病对照组相比,男性2型糖尿病患者腰臀比(WHR)、空腹血糖(FBG)及apoCⅡ明显升高(P<0.05),apoAⅠ、AⅡ明显降低(P<0.05)。女性糖尿病患者较女性非糖尿病者体重指数(BMI)、WHR、FBG、TG水平明显升高(P<0.05),HDL-C、apoAⅠ、AⅡ水平则明显降低(P<0.01)。在伴有脂质异常血症和冠心病的2型糖尿病患者中,apo(s)与血脂的变化更为明显。2型糖尿病伴高甘油三酯血症的患者较TG正常的糖尿病患者BMI、WHR、空腹胰岛素(INS)、TG、TC、apoB100、CⅡ、CⅢ和E水平明显升高,同时伴HDL-C、apoAⅠ水平降低(P均<0.05);2型糖尿病伴高胆固醇血症的患者与TC正常的的患者相比,WHR、TG、TC和apoB100、CⅡ、CⅢ、E水平也明显升高(P<0.01)。载脂蛋白的变化与血脂的变化呈明显相关。在2型糖尿病合并冠心病的患者中,BMI、FBG、INS、apoB100、CⅡ、CⅢ和E水平显著升高,HDL-C、apoAⅡ水平则显著降低(P均<0.05)。结论　载脂蛋白异常是2型糖尿病患者的代谢紊乱特征,同时可能是2型糖尿病发生脂代谢紊乱和冠心病的重要原因。     

中国人内源性高甘油三酯血症患者对氧磷酶基因192位Gln—Arg多态性的研究

OBJECTIVE: To investigate the 192 Gln-Arg polymorphism of paraoxonase (PON) gene and its relationship with serum lipids and apolipoproteins (apo) levels in patients with endogenous hypertriglyceridemia in Chinese population in Chengdu area. METHODS: The genotype and allele frequencies of paraoxonase gene 192 Gln-Arg polymorphism were assayed by polymerase chain reaction (PCR)-restriction fragment length polymorphism (RFLP). Serum lipids were measured by enzymatic kits and apolipoproteins AI, A II, B100, C I, C II and E were measured by the RID kits developed by the Apolipoprotein Research Unit of this university in 128 HTG patients whose fasting serum TG levels were > or = 2.26 mmol/L and 129 healthy subjects whose fasting serum TG levels were < 1.82 mmol/L and TC levels < 6.2 mmol/L from a population of Chinese Han nationality in Chengdu area. RESULTS: Both in HTG group and control group, the QR genotype of PON gene was the major one, and the frequencies were 0.515 and 0.581 respectively. No differences were found in PON gene Gln-Arg polymorphism between the HTG group and the control group. In the control group, the QQ genotype of PON gene was found to have higher serum apoA I levels, compared with the RR genotype (P < 0.05). But in the HTG group, when compared with the RR genotype, the QQ genotype was found to have lower serum apoA I and A II levels and higher serum apoE levels. CONCLUSION: These may be an association of the QQ genotype of the paraoxonase 192 Gln-Arg polymorphism with the decrease of serum apoA I level and the increase of serum apoE level in endogenous hypertriglyceridemica.     

Apolipoportein E polymorphism, serum lipids and apolipoproteins of 362 Han national subjects in Chengdu area]

This investigation was conducted to observe the frequency distribution of apoE phenotypes and alleles and to explore the relationship between apoE polymorphism and plasma lipids or apolipoproteins in Chinese population. ApoE phenotypes were assayed by isoelectric focusing and immunoblotting with serum. Serum lipids and apoA I, B100, C II, C III, E were determined in a random subset of 362 subjects including 268 males and 94 females with a mean age of 43.7 +/- 12.3 yrs from a population of Han Nationality in Chengdu area. The results showed that the frequencies of apoE phenotypes and alleles were: E3/3 72.93%, E2/3 12.98%, E3/4 11.33%, E2/4 1.38%, E4/4 1.38%, E2/2 0.00%; epsilon 3 0.8508, epsilon 2 0.0718, epsilon 4 0.0774. The results also showed that the apo E2(E2/3 + E2/2) group had lower levels of serum TC and apoB100 (P < 0.05) and a higher level of serum apoE (P < 0.001) when compared with the apoE3(E3/3) or apoE4(E3/4 + E4/4) group. No significant difference was observed in TG, apoA I, apoC II, and apoC III levels among the apoE2, E3 and E4 groups (P > 0.05).     

The abnormal changes of apolipoprotein(s) in patients with type 2 diabetes mellitus]

OBJECTIVE: To investigate the changes of the apolipoproteins(apoA I, A II, B100, C II, C III, E) in patients with type 2 diabetes mellitus. METHODS: The levels of fasting plasma glucose(FBG), insulin, TG, TC, apoA I, A II, B100, C II, C III, E were all measured in 127 non-diabetic subjects and 143 type 2 diabetic patients (20 associated with coronary heart disease (CHD) and 66 associated with hypertriglyceridemia(HTG), 55 associated with hypercholesterolemia). RESULTS: In male type 2 diabetic patients, the levels of FBG, WHR and apoC II were significantly higher (P < 0.05) and apoA I, A II levels were significantly lower (P < 0.05) than those in male non-diabetic subjects. In female type 2 diabetic patients, the levels of FBG, BMI, WHR, TG significantly elevated while HDL-C, apoA I, A II levels significantly decreased as compared with those in female non-diabetic subjects. In type 2 diabetic group, the levels of WHR, FBG and TG in HTG patients were elevated significantly as compared with those without HTG, and the levels of HDL-C, apoA I and apoA II were decreased; the levels of WHR, TG, TC, apoB100, C II, C III, E in patients with HTC were significantly higher than those whose cholesterol levels were normal. In patients with CHD, the levels of fasting insulin, apoB100, apoC II and apoE were significantly higher than those in patients without CHD, and the levels of HDL-C and apoA II were decreased significantly. CONCLUSION: Abnormal changes of apo(s) in type 2 diabetes mellitus may be a cause of type 2 diabetes associated with HTG and CHD.     

Apolipoprotein C III gene Sst I polymorphism in patients with endogenous hypertriglyceridemia in Chinese population]

OBJECTIVE: To investigate the apoC III gene Sst I polymorphism and its relationship with serum lipids and apolipoproteins (apo) levels in patients with endogenous hypertriglyceridemia in Chinese population. METHODS: The genotype and allele frequency of apoC III gene Sst I polymorphism was assayed by polymerase chain reaction (PCR)-restriction fragment length polymorphism (RFLP). Serum lipids were measured by enzymatic kits and apolipoproteins A I, A II, B100, C II, C III and E were measured by RID kits developed by Apolipoprotein Research Unit of WCUMS in 176 HTG patients whose fasting serum TG levels were > or = 2.26 mmol/L and in 199 healthy subjects whose fasting serum TG levels were < 1.82 mmol/L and TC levels < 6.2 mmol/L from a population of Chinese Han nationality in Chengdu area. RESULTS: In both HTG group and control group, S1 allele was the major allele and homozygous S1S1 genotype was the most frequent one. The frequency of S2 allele was significantly higher than that reported in Caucasians (0.289 vs 0.06-0.16, P < 0.05). No differences were found in apoC III gene Sst I polymophism in the HTG group when compared with the control group (0.287 vs 0.289, P > 0.05). The genotype of S2S2 was not associated with higher TG and apolipoproteins levels when compared with the genotypes of S1S1 and S1S2 (P > 0.05). CONCLUSION: These results suggest that the Sst I polymorphism of the apoC III gene was not associated with endogenoushypertriglyceridemica in Chinese population.     

中老年男性血糖与血清脂质及载脂蛋白的关系

OBJECTIVE: To gain an insight into the relation of plasma glucose levels to lipids and apolipoproteins levels. METHODS: Fasting 12-14 h blood glucose (BG), high density lipoprotein cholestrol(LDL-C), apolipoproteins(apo) A I, A II, B100, C II, C III and E levels were measured in 735 men aged 40-70 in Chengdu area. The subjects studied were divided into three groups by the plasma glucose levels: 1. normal group (S1), 2. decreased glucose tolerance group (S2), 3. diabetes mellitus (DM) group (S3). RESULTS: Among 735 cases studied, groups S2 and S3 had more hyperlipidemia than group S1 (64%, 45% and 32.2% respectively). The fasting serum mean TG levels in groups S2 (3.62 +/- 2.52 mmol/L) and S3 (4.45 +/- 3.82 mmol/L) group were significantly higher than that in group S1 (1.92 +/- 1.39 mmol/L) (P < 0.01 and P < 0.01), and the mean TG levels in groups S2 (5.68 +/- 1.15 mmol/L) and S3 (5.68 +/- 1.12 mmol/L) were higher than that in group S1 (5.13 +/- 1.06 mmol/L) (P < 0.05, P < 0.05). The serum apo B100, C II, C III and E levels in groups S2 and S3 were significantly higher as compared with that in the normal group (P < 0.01, P < 0.05). The correlation analysis indicated that there was a positive correlation of BG with serum TG in groups S1, S2 and S3 whose correlation coefficients (r) were 0.1800, 0.1436 and 0.3212 respectively (P < 0.001); and a negative correlation with HDL-C levels in groups S2 and S3 (r = -0.2534 and -0.1477, P < 0.001). The plasma glucose levels were positively correlated with apo B100, C III and E levels in groups S1, S2 and S3, P < 0.001), with apo C II in groups S1 and S2 (P < 0.001, P < 0.01); and negatively correlate to apoA I only in group S2 (r = -0.1182, P < 0.01). CONCLUSION: The results suggest that serum TG, TC, HDL-C, apoB100, C II, C III and E levels be the main factors that related to plasma glucose levels.     

载脂蛋白A5基因-1131T/C多态性与2型糖尿病血脂及其颈动脉内膜中层厚度相关性研究

目的 探讨载脂蛋白A5基因(ApoA5)-1131T/C多态性与成都地区汉族人群2型糖尿病(T2DM)患者血脂及其颈动脉内膜中层厚度(IMT)的关系.方法 应用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)结合聚丙烯酰胺凝胶电泳(PAGE)技术,分析154例T2DM患者和206例正常对照者ApoA5基因一1131T/C多态性.酶法测定血清甘油三酯(TG)、总胆固醇(TC)及高密度脂蛋白胆固醇(HDL-C).颈动脉超声多普勒检查T2DM患者的颈动脉内膜中层厚度.结果 ApoA5基因一1131T/C多态位点T、C等位基因频率在T2DM组和正常对照组分别为0.721、0.279和0.760、0.240.基因型频率分布符合Hardy-Weinberg平衡定律.ApoA5基因-1131T/C位点基因型频率和T、C等位基因频率在T2DM组和正常对照组间比较差异无统计学意义(P>0.05).CC纯合子患T2DM风险是TT纯合子的2.432倍(95%CI:1.081～5.473).T2DM组ApoA5基因一1131T/C位点C等位基因携带者(TC)基因型和CC基因型的血清TG水平和TG/HDL-C比值均高于竹基因型携带者(P<0.05).正常对照组TC基因型携带者的血清TG水平和TG/HDL-C比值较TT基因型携带者升高(P<0.05).T2DM组颈动脉IMT ApoA5基因-1131T/C位点CC基因型亚组较TT基因型亚组有增加趋势(P=0.08).结论 ApoA5基因-1131T/C多态性与T2DM的发生无相关性,但CC基因型患T2DM的风险增加.ApDA5基因-1131T/C多态性与正常对照及T2DM患者的血清TG水平和TG/HDL-C比值增高有关,但与T2DM患者颈动脉IMT的相关性需进一步研究.     

中国人内源性高甘油三酯血症患者载脂蛋白CⅢ基因SstⅠ酶切位点多态性的研究

目的　探讨中国人内源性高甘油三酯血症 (HTG)患者血脂及载脂蛋白的改变是否与 apo C 基因 Sst 酶切位点多态性有关。方法　应用聚合酶链反应 (PCR)对 176例 HTG患者及 199例正常对照 apo C 基因 Sst 酶切位点的限制性片段长度多态性 (RFL P)进行研究。血脂用酶法 ,血清 apo A 、A 、B10 0、C 、C 及 E用 RID试剂盒测定。结果　 HTG患者和正常对照组 apo C 基因均以 S1等位基因为主 ,S2等位基因少见 ,其频率显著高于白种人 (0 .2 89vs0 .0 6～ 0 .16 ,P<0 .0 5 )。正常对照组和 HTG组 S2等位基因频率分别为 0 .2 89和 0 .2 87,两者无显著差异 (P>0 .0 5 )。apo C 基因 S2 S2基因型者血脂、载脂蛋白水平与 S1S1者无显著差异。结论　未发现apo C 基因 Sst 酶切位点的 RFL P与中国人 HTG有关联。     

Alzheimer病及多梗塞性痴呆患者血清载脂蛋白A I、B100、E水平及apoE多态性分析

目的 探讨中国人血清载脂蛋白（apo)AI、B100、E水平及apoE多态性与Alzheimer病（AD）及多梗塞性痴呆（MID）的关系。方法 采用单向免疫扩散法及等电聚焦免疫印迹分析法对75例AD、36例MID和60例对照受检者的血清apoA I、B100、E及apoE多态性进行了分析。结果 AD组及MID组apoE表型E4（E4／4＋E3／4＋E2／4）的频率分别为0．3466和0．3889,较对照组的0．1167明显为高（P＜0．05）,ε4等位基因频率分别为0．2333和0．2083,均明显高于对照组（0．0666）（P＜0．05）,AD组ε2等位基因频率低于对照组（0．0467vs 0．0833,P＜0．05）;AD组及MID组患者血清apoA I及E水平明显低于对照组（P＜0．001,P＜0．05）。结论 apoEε4等位基因与中国人AD和MID有关联,AD及MID患者血清apoA I及E水平明显降低（P＜0．001及P＜0．05）。