中国北方汉族人2型糖尿病合并冠心病与KIF6基因Trp719Arg多态性的相关性

目的探讨中国北方汉族人群KIF6基因Trp719Arg多态性基因型和等位基因频率分布特点,及与2型糖尿病(DM)合并冠心病(CHD)的关联性。方法采用病例对照研究设计,应用聚合酶链反应限制性片段长度多态性(PCR-RFLP)技术分析了对照组(152例)、DM组(97例)、DM+CHD组(76例)KIF6基因Trp719Arg多态性;比较组间基因型和等位基因频率分布差异,研究基因多态性对血糖、血脂水平的影响。结果中国北方汉族人群Trp719Arg多态性TT、TC、CC基因型频率分别为0.281、0.499与0.220。T、C等位基因频率分别为0.531与0.469。KIF6基因Trp719Arg多态性基因型和等位基因频率组间分布差异无统计学意义(均为P>0.05)。KIF6基因Trp719Arg多态性对血糖、血脂水平无显著影响。Logistic回归分析显示,高血压、年龄(≥60岁)、低HDL-C水平(<1.04 mmol/L)是DM+CHD的独立危险因素(OR分别为2.850、12.977和4.006,均为P<0.05),C等位基因与DM+CHD的发生无统计学相关性。结论 KIF6基因Trp719Arg多态性可能不是我国北方汉族人群DM+CHD的独立危险因素。     

中国人群驱动蛋白6rs20455基因多态性与冠心病关联性的meta分析

目的:探讨中国人群中驱动蛋白6(KIF6)rs20455基因多态性与冠心病(CHD)易感性之间的关系。方法:全面检索中国知网、维普、万方、PubMed、Ebsco、Web of Science、Cochrane数据库,检索年限为建库至2018-07-31,筛选有关中国人群KIF6rs20455基因多态性与CHD关联性的文献,对KIF6rs20455T/C各基因型进行比较。结果:共纳入7篇研究,共有1 755名健康对照组,1 759例CHD患者。KIF6rs20455各基因型与CHD无显著相关性。等位基因模型:OR=0.96,95%CI(0.87～1.06),P=0.4;隐性模型:OR=1.01,95%CI(0.86～1.18),P=0.91;显性模型:OR=0.92,95%CI(0.79～1.07),P=0.28;共显性模型TC/TT:OR=0.91,95%CI(0.78～1.08),P=0.29;共显性模型CC/TT:OR=0.97,95%CI(0.80～1.17),P=0.72。结论:在中国人群中,KIF6rs20455基因多态性与CHD易感性无相关性。     

广西巴马长寿人群PON1基因多态性与血脂水平的关系

目的探讨广西巴马长寿人群对氧磷酶-1(PON1)基因rs662位点多态性与血脂水平的关系。方法调查巴马长寿老人151例、无长寿家族史健康成年人198例(对照1组)及南丹无长寿家族史的健康成年人176例(对照2组),分析其PON1基因频率分布特点并比较各基因型人群血脂水平。结果长寿组与对照两组的基因型和等位基因频率差异显著(P0.05),长寿组与对照两组A等位基因频率分别为35.8%和23.0%;长寿组AG基因型的HDL水平高于GG的HDL水平,GG及G等位基因携带者的HDL水平高于对照1组,AG、GG及G等位基因携带者TG水平低于对照两组。结论长寿组与对照两组rs662位点基因型及等位基因频率分布存在差异;巴马长寿人群rs662位点多态性与血脂水平相关。     

神经突起生长抑制因子A基因多态性与缺血性脑卒中患者遗传易感性的研究

目的探讨神经突起生长抑制因子A(Nogo-A)基因单核苷酸多态性各等位基因及基因型在缺血性脑卒中(IS)患者中的分布频率,并初步分析其基因型与IS的关系及其对血脂、脂蛋白水平的影响。方法采用PCR技术和DNA测序法检测202例IS患者(IS组)及199例对照者(对照组)的Nogo-A基因内含子区rs1012603C/T、rs12464595C/T及rs2864052G/A多态性,分析各基因型及等位基因的分布频率;同时测定血脂、载脂蛋白水平,并进行分析。结果 rs1012603C/T基因型频率和等位基因频率比较,差异有统计学意义(P<0.05),等位基因频率相对风险分析发现,T等位基因携带者患IS的风险是C等位基因的1.513倍(OR=1.513,95%CI:1.069².141);与对照组比较,IS组TG、LDL-C、载脂蛋白A明显升高(P<0.05)。结论 Nogo-A基因内含子区rs1012603C/T多态性与IS的发生有关,T等位基因可能是IS患者发病的遗传易感基因。     

新疆地区LIPG和GUCY1A3基因多态性与冠心病的相关性研究

目的:探讨新疆地区人群中GUCY1A3的rs7692307及LIPG的rs2000813、rs3813082基因的单核苷酸多态性(SNPs)与冠心病的相关性。方法:纳入研究对象共1883例,其中冠心病组959例,对照组924例,检测GUCY1A3、LIPG基因的SNPs位点多态性。结果:GUCY1A3 rs7692307均为GG基因型,无研究意义。两组间比较后,LIPG rs3813082、rs2000813基因型频率和等位基因频率均无明显差异。根据性别分层后,女性人群中LIPG rs2000813基因型分布频率在两组中有显著差异(P0.05),且LIPG rs2000813位点上的C等位基因是女性冠心病的独立危险因素之一。结论:LIPG rs2000813位点上的C等位基因对于冠心病的发生具有性别特异性,是女性冠心病的独立危险因素之一,而未见其对男性冠心病的发生有影响。     

固醇调节元件结合蛋白-1c基因54G/C多态性与新疆维吾尔族冠心病的相关性

目的: 探讨固醇调节元件结合蛋白-1c（SREBP-1c）基因18号外显子54G/C基因多态性与新疆地区维吾尔族人群冠心病的相关性。方法: 采用聚合酶链反应-限制性片段长度多态性方法,对260例冠心病患者和256例健康体检者SREBP-1c基因18号外显子54G/C位点进行分析,同时进行血糖及血脂水平检测。结果: SREBP-1c基因18号外显子54G/C在冠心病组和健康对照组中基因型频率分别为:CC型0.146和0.051,CG型0.346和0.387,GG型:0.508和0.563,两组CC基因型差异具有统计学意义（P<0.05）,且冠心病组C等位基因频率高于对照组（P<0.01）,而GC和GG基因型差异无统计学意义。不同基因型间血糖、血脂水平差异具有统计学意义（P<0.05）。结论: 固醇调节元件结合蛋白-1c基因CC基因型和等位基因C与新疆维吾尔族人群冠心病有关联,并可影响患者的血糖、三酰甘油代谢。     

尾加压素Ⅱ基因多态性与多囊卵巢综合征相关性的研究

目的 探讨尾加压素Ⅱ(UTS2)基因多态性与多囊卵巢综合征(PCOS)发病的关系.方法 用熔解温度不同的基因分型法.检测PCOS患者101例(PCOS组)及其父母202名和105名健康妇女(对照组)UTS2基因rs228648、rs2890565位点单核苷酸多态性(SNP),并检测基础状态下FSH、LH、睾酮、空腹血糖、空腹胰岛素水平.结果 PCOS组的UTS2基因rs228648 A/G多态性位点与对照组比较,基因型与等位基因频率均无明显差异,两组的SNP rs2890565基因型频率差异有统计学意义(P<0.05),PCOS组A等位基因频率明显高于对照组(P<0.05).传递不平衡检验(TDT)显示,SNP rs228648A/G在杂合子父母的2个不同等位基因无优势传递(P>0.05),而rs2890565 A/G在杂合子父母A等位基因优势传递(P<0.05).PCOS组UTS2基因SNP rs228648 GG基因型较携带A等位基因的PCOS患者稳态模型评估的胰岛素抵抗指数(HOMA-IR)明显增高(P<0.05).SNP rs2890565从和AG基因型空腹血糖、空腹胰岛素较GG基因型明显增高,从基因型HOMA-IR较GG基因型明显增高(P<0.05).结论 UTS2基因SNP rs228648 A/G多态性与PCOS无相关性,但与胰岛素抵抗存在关联.UTS2基因SNP rs2890565可能在PCOS的遗传易感性中起一定作用,A等位基因可能与PCOS的发生有关.     

血管紧张素转换酶基因多态性与心肌梗塞发病相关性研究

对104例正常人和97例心肌梗塞患者用PCR方法检测其ACE基因型及血清ACE水平。ACE基因多态性分为DD、ID、II型。结果表明等位基因频率D=0.56,I=0.44,三种基因型之间血脂、脂蛋白、血糖、胰岛素、BMI等无差异。DD、ID、II型ACE水平分别为38.35±10.24u、30.74±9.6u、29.03±5.26u(P<0.01)。ACE DD型与心肌梗塞相关,D等位基因频率梗塞组高于对照组,OR值为1.55(P=0.003)。在低危人群中DD基因型频率梗塞组高于对照组,DD基因型与梗塞的相关性增高,OR值由1.55增高为1.65、1.69。有冠心病家族史者其DD基因型频率高于无冠心病家族史者,OR为1.87(P=0.02)。因此,ACE I/D基因多态性与血清ACE水平相关,ACE DD是冠心病、心肌梗塞的潜在危险因素,尤其对于低危人群。     

老年冠心病白细胞介素-6-634C/G多态性研究

目的探讨白细胞介素-6(IL-6)基因启动子上游634C/G多态性在老年冠心病患者和正常人群中的分布及与冠心病的相关性。方法应用聚合酶链反应-限制性片断长度多态性技术对汉族104例老年冠心病患者及106例正常人白细胞介素-6基因-634C/G多态性位点进行研究,同时结合血脂、C反应蛋白、IL-6水平探讨两者之间的关系。结果-634C等位基因频率在老年冠心病患者和正常人群分别为77·9%和85·4%,G等位基因频率分别为22·1%和14·6%。冠心病患者-634GG基因型频率和G等位基因频率明显高于正常对照组(P<0·05)。结论IL-6基因-634C/G位点多态性与老年冠心病呈相关性。G等位基因可能是老年冠心病的易感性标志。     

色氨酸羟化酶基因A218C及5-羟色胺转运体基因多态性与原发性高血压

目的 研究中国北方汉族人群色氨酸羟化酶(TPH)基因A218C、5-羟色胺转运体(5-HTT)基因内含子2可变数目串联重复(VNTB)序列和启动子连锁多态区(LPR)缺失/插入多态性与原发性高血压(EH)的关系.方法 采用聚合酶链反应-限制性片段长度多态性技术,检测280例EH患者和200例正常血压对照者TPH基因A218C、5-HTTVNTR和5-HTTLPR多态性位点的基因型和等位基因分布.结果 TPH基因A218C和5-HTTVNTR多态基因型及等位基因频率在EH组和对照组间的分布差异均无统计学意义(均P>0.05).5-HTTLPR多态的SS、LS及LL基因型在EH组分布频率为68%,29%,3%,在对照组分别为53%,37%和10%(P<0.01);S、L等位基因在EH组分布频率为82%和18%,在对照组分别为72%和28%(P<0.01).与L等位基因携带者(LS+LL)相比,SS纯合子EH患病风险显著增加(OR=1.90,95%CI为1.31～2.77,P=0.001).logistic回归分析校正年龄、性别、体质指数、血脂、空腹血糖及血尿酸水平,5-HTTLPR多态SS基因型仍与EH发病危险显著相关(DR=1.47,95%CI为1.06～2.04,P=0.021).结论 5-HTTLPR的SS基因型可能与中国北方汉族人群EH的发生相关联,而TPH基因A218C和5-HTTVNTR基因多态性在中国北方汉族人群EH的发生不起主要作用.     

KIF6, LPA, TAS2R50, and VAMP8 genetic variation, low density lipoprotein cholesterol lowering response to pravastatin, and heart disease risk reduction in the elderly

Single nucleotide polymorphisms (SNPs) at the KIF6 (kinesin like protein 6, rs20455 or 719Arg), LPA (lipoprotein(a), rs3798220), TAS2R50 (taste receptor type 2, member 50, rs1376251) and VAMP8 (vesicle-associated membrane protein 8, rs1010) have previously been associated with low density lipoprotein cholesterol (LDL-C) lowering response to statins, coronary heart disease (CHD) at baseline, or CHD events on trial. We examined SNPs at the KIF6 (rs20455 or 719Arg), LPA (rs3798220), TAS2R50 (rs1376251) and VAMP8 (rs1010) in 5,411 participants in PROSPER (PROspective Study of Pravastatin in the Elderly at Risk) (mean age 75.3 years), who had been randomized to pravastatin 40 mg/day or placebo and were followed for a mean of 3.2 years. No SNP was related to vascular disease at baseline. Only the KIF6 SNP was related to LDL-C lowering with homozygous Arg 719 subjects being significantly less responsive than other groups (p=0.025, -34.2 vs. -36.1%). With regard to the primary CHD endpoint on trial (fatal or non-fatal myocardial infarction or stroke), we observed a significant relationship for KIF6 719Arg homozygotes (p=0.03, hazards ratio 0.47, 12.8% of the population) in women on pravastatin only, and for TAS2R50 for the AA genotype (p=0.03, hazards ratio 1.76, 8.9% of the population), also only in women on pravastatin. Our data indicate that the assessment of KIF6 rs20455 and TAS2R50 rs1376251 genotypes are not useful for predicting statin induced cardiovascular risk reduction in men, but do predict CHD risk reduction in women in this elderly population. However, these differences are no longer significant after correction for multiple comparisons, and we do not recommend the assessment of any of these SNPs in clinical practice.     

A kinesin family member 6 variant is associated with coronary heart disease in the Women's Health Study.

OBJECTIVES: We asked if carriers of the 719Arg allele of kinesin family member 6 (KIF6) have increased risk of coronary heart disease (CHD) in a cohort of initially healthy Caucasian American women. BACKGROUND: The 719Arg allele of KIF6 (rs20455) has been reported to be associated with increased risk of CHD in a large population-based prospective study, ARIC (Atherosclerosis Risk in Communities), and in the placebo arms of 2 statin trials, CARE (Cholesterol and Recurrent Events) and WOSCOPS (West of Scotland Coronary Prevention Study). However, this KIF6 variant was not specifically investigated in the female subgroup in the ARIC study, and the CARE and WOSCOPS trials included only a small number of female patients. METHODS: Genotypes of the rs20455 single nucleotide polymorphism (SNP) were determined among 25,283 initially healthy Caucasian women, age 45 years and older, participating in the WHS (Women's Health Study) who were prospectively followed over a 12-year period for incident cardiovascular events. The risk associated with the 719Arg allele of KIF6 was estimated using Cox proportional hazards models that adjusted for age and traditional risk factors. RESULTS: During follow-up, 953 women suffered a first-ever CHD event (myocardial infarction, coronary revascularization, or cardiovascular death) or first-ever ischemic stroke. Compared with noncarriers, carriers of the 719Arg allele had an increased risk of CHD (hazard ratio [HR] = 1.24 [95% confidence interval (CI) 1.04 to 1.46, p = 0.013]) and myocardial infarction (HR = 1.34 [95% CI 1.02 to 1.75, p = 0.034]) but not ischemic stroke. CONCLUSIONS: Confirming and extending previous reports, carriers of the 719Arg allele of KIF6 have 34% higher risk of myocardial infarction and 24% higher risk of CHD compared with noncarriers among 25,283 women from the WHS.     

A preliminary identification of PIN1 SNP linkage in patients with coronary heart disease from Handan,China

Our aim was to perform an initial assessment of the polymorphic patterns of the PIN1 gene in patients with coronary heart disease (CHD). The PIN1-encoded protein (Pin1) suppresses eNOS-NO signaling and may impair cardiovascular function. Blood collection, DNA extraction, PCR amplification and gene sequencing were performed for thirty CHD participants living in central China, focusing on nine single nucleotide polymorphisms (SNPs). Their genetic linkages were revealed and their allele frequencies were compared with SNP data from the NCBI. Three major linkage patterns were identified: [1.rs2287839-5.rs2233682], [3.rs2233679-4.rs1077220–8.rs2287838] and [6.rs889162-7.rs2010457], suggesting correlated involvement in CHD and possible simultaneous genetic origin in ancient times. The frequencies of six SNPs are consistent with the NCBI data, while the frequencies of three SNPs (2.rs2233678, 4.rs1077220 and 9.rs4804461) are not consistent with the NCBI. Especially, the 3.rs2233679–4.rs1077220 linkage is different from other populations worldwide and may be an interesting genetic characteristic of Chinese CHD patients. Predictably, 1.rs2287839, 2.rs2233678, 3.rs2233679 and 5.rs2233682 may be strongly associated with CHD risk, although this requires future verification. The PIN1 SNP linkages lay a new genetic foundation for discovering novel molecular mechanisms of CHD and for exploring PIN1-based targeted treatment of CHD with nitric oxide regulatory therapies in clinical practice.     

黑龙江省东部地区汉族人群PCSK9基因第1外显子多态性与脂代谢的相关性

目的 研究黑龙江省东部地区汉族人群前蛋白转化酶枯草溶菌素(PCSK)9基因第1外显子多态性与脂代谢的相关性.方法 因心绞痛和(或)运动试验阳性及有冠脉管腔狭窄证据而需入院行冠状动脉造影者220例中,110例冠心病(CHD)者为病例组,110例非CHD者为对照组,检测PCSK9基因第1外显子基因多态性及血脂水平,并对基因多态性与血脂水平进行相关性分析.结果 共发现c.121C>G、c.299C>T、c.427-428insGCT、A53V、P56S和c.556A>G 6个突变位点,其中在A53V突变位点上发现CC和TC两种基因型,但未发现TT基因型.病例组和对照组各基因型间血清三酰甘油(TG)、总胆固醇(TC)、高密度脂蛋白胆固醇(HDL-C)和低密度脂蛋白胆固醇(LDL-C)水平差异具有统计学意义(P<0.05).病例组中TC基因型血清TG、TC和LDL-C水平均显著高于CC基因型(P<0.05);对照组中TC基因型血清TC水平显著高于CC基因型(P<0.05).结论 PCSK9基因第1外显子在黑龙江省东部地区汉族人群中存在多态性,且与CHD患者脂代谢有关.     

冠心病痰证与载脂蛋白A5 c.553G>T基因多态性的关系研究

目的探讨载脂蛋白A5(APOA5)c.553G>T基因多态性与冠心病痰证的关系。方法运用聚合酶链反应-限制性片段长度多态性分析技术(PCR-RFLP)对湖南地区58例冠心病痰证、51例冠心病非痰证、73例非冠心病痰证患者及74名健康人的APOA5c.553G>T基因型进行检测,同时检测所有研究对象的血脂、血压及体质量指数。结果 256例受检者中,APOA5c.553G>T位点GG型221例(86.33%),GT型35例(13.67%),TT型0;G等位基因频率93.16%,T等位基因频率6.84%。c.553GT型血清TG水平明显高于GG型。病例-对照研究提示c.553T等位基因是冠心病痰证发生的危险因素,但多因素Logistic回归分析不支持c.553T是上述病证发生的独立危险因素。结论 APOA5c.553G>T基因多态性不是冠心病痰证的独立危险因素,c.553GT基因型可能与血清三酰甘油水平升高有关。     

Variation in the fatty acid binding protein 2 gene is not associated with markers of metabolic syndrome in patients with coronary heart disease

BACKGROUND AND AIM: It has been suggested that the threonine (Thr) 54 allele of the intestinal fatty acid binding protein 2 (FABP2) gene is associated with insulin resistance and affects the fatty acid composition of serum lipids. Our aim was to investigate the frequency of the alanine (Ala) 54Thr polymorphism of the FABP2 gene in patients with coronary heart disease (CHD), and the association between the polymorphism and the markers of metabolic syndrome, serum lipid levels and the fatty acid profile of serum lipids. METHODS AND RESULTS: A total of 414 CHD patients (mean age 61 years, range 33-74) participated in the cross-sectional EUROASPIRE (European Action on Secondary Prevention through Intervention to Reduce Events) Study. Markers of metabolic syndrome included fasting plasma glucose concentration, serum high-density lipoprotein cholesterol and triglycerides (TG), waist circumference, the waist/hip ratio, body mass index (BMI) and blood pressure (BP). The frequency of the Thr54 allele was similar in the CHD patients (27.2%) and control subjects from two independent studies (27.8% and 28.7%). There were no significant differences in plasma glucose, serum lipids, BP, BMI, waist circumference or waist/hip ratio among the genotypes. Genotype frequency was not associated with the prevalence of diabetes or metabolic syndrome, but metabolic syndrome (as defined by National Cholesterol Education Program criteria) tended to be more frequent in subjects with the Thr/Thr genotype (p = 0.095). There were no differences in the fatty acid profiles of serum cholesteryl esters, TG or phospholipids among the genotypes. CONCLUSIONS: The Ala54Thr polymorphism of the FABP2 gene is not associated with CHD, markers of the metabolic syndrome, or the fatty acid profile of serum lipids in Finnish CHD patients.     

三磷酸腺苷结合盒转运子A1基因多态性与冠心病及缺血性脑卒中的关系研究

目的探讨三磷酸腺苷结合盒转运子A1(ATP-binding cassette transporter A1,ABCA1)基因多态性与广西汉族人群冠心病(CHD)及缺血性脑卒中(IS)易感的相关性。方法选择住院患者1134例,根据诊断分为CHD组565例、IS组569例,同时选择年龄、性别匹配的健康人群541例作为对照组,进行临床资料分析,采用聚合酶链反应-限制性片段长度多态性检测ABCA1基因的单核苷酸多态性(SNP)位点rs2066715和rs2740483的基因分型,探讨其与CHD及IS易感的相关性。结果 3组rs2066715基因型及等位基因频率差异无统计学意义(P>0.05),该SNP与CHD及IS的易感无相关性(P>0.05);与对照组比较,CHD组和IS组rs2740483等位基因和基因型频率分布差异均有统计学意义(P<0.05,P<0.01);该SNP与CHD及IS的易感有相关性(P<0.05)。结论 ABCA1rs2740483与广西汉族CHD和IS易感相关,携带野生型等位基因的个体有更高的罹患风险。     

β-羟甲基戊二酰辅酶A还原酶基因多态性与冠心病相关性的研究

目的研究汉族人群β-羟甲基戊二酰辅酶A还原酶(HMGCR)基因型和等位基因频率分布的遗传背景,探讨HMGCR多态性与冠心病的相关性。方法采用聚合酶链反应-单链构象多态性分析及测序技术,对湖北地区汉族123例健康人以及117例冠心病病人HMGCR多态性基因型和等位基因频率分布进行分析,研究HMGCR多态性对血脂、脂蛋白和载脂蛋白水平的影响。结果冠心病组内TT/CC(TT+CC)基因型与TT基因型相比,血清TC和LDL-C水平均有显著性差异(P<0·05)。冠心病组与对照组相比,2725A/G位点基因型间血脂、脂蛋白及载脂蛋白水平均无显著性差异(P>0·05)。结论HMGCR基因3089T/C位点基因多态性可能与冠心病存在相关性,而2725A/G位点多态性与血脂水平的相关性不明显。