新疆吐尔扈特蒙古族人群血管紧张素转换酶（ACE）基因多态性分析

目的: 研究新疆地区吐尔扈特蒙古族人群血管紧张素转换酶(ACE)基因插入/缺失多态性分布情况.方法: 采用聚合酶链反应(PCR)分别检测 82例新疆地区吐尔扈特蒙古族正常人群样本的ACE I/D基因型, 分类计数进行统计学分析.结果: 新疆地区吐尔扈特蒙古族正常人的ACE基因3种基因型频率分别为: DD型 24.39%, ID型 26.83%, Ⅱ型 48.78%.D和I等位基因频率分别为37.80%和62.20%.结论: ACE基因多态性的分布与性别无关, 新疆地区吐尔扈特蒙古族人群ACE基因频率分布与日本人相近, 但DD型及D等位基因频率低于欧美人群.     

PAI-1启动子区4G/5G基因多态性、ACE插入/缺失多态性与脑卒中的相关性

目的探讨纤溶酶原激活物抑制物-1(PAI-1)启动子区基因多态性和血管紧张素转换酶(ACE)插入/缺失多态性与脑卒中的关系。方法 PCR检测203例脑卒中患者和139名健康对照者PAI-1基因启动子区4G/5G多态性、ACE基因插入/缺失多态性,同时应用比色法测定血清ACE活性,发色底物法测定PAI-1活性。结果脑梗死(CI)组PAI-1活性(0.769±0.163 AU/mL)、ACE活性(43.42±14.36 U/L)明显高于对照组(0.652±0.116 AU/mL和31.28±8.64 U/L,P<0.01);CI组PAI-I基因4G纯合子、ACE D/I基因DD纯合子比例明显高于对照组(P<0.01);PAI-I基因4G/4G基因型与ACE基因D/D基因型对CI发病可相互协同作用(P<0.01)。结论 PAI-1基因4G/4G基因型和ACE基因D/D基因型均可能是CI发病的危险因素,且具有协同作用。     

ACE、AGT基因联合多态性与高血压合并脑梗塞相关

目的探讨北京地区汉族人群血管紧张素转化酶(ACE)基因插入/缺失(I/D)多态性与血管紧张素原(AGT)基因CD235Met-Thr变异(M235T)与高血压合并脑梗塞发生的关系。方法分别用PCR法、突变基因分离聚合酶链反应(MS-PCR)法检测664例高血压合并脑梗塞患者(CI),678例单纯高血压患者(EH)和716例对照者(C)的ACE基因I/D多态性及AGT基因M235T多态性,分析两个基因多态性分布与高血压合并脑梗塞发病的相关性。结果 CI组ACE-DD和AGT-TT基因型频率(分别为0.309和0.643)均显著高于C组(分别为0.203和0.543,P<0.001)和EH组(分别为0.217和0.569,P<0.01)。CI组与C组比较,ACE-DD、AGT-TT联合基因型OR值(2.547,95%CI:1.919～3.382)明显高于ACE-DD单基因型(1.759,95%CI:1.376～2.248)和AGT-TT单基因型(1.515,95%CI:1.220～1.880)。结论 ACE-DD和AGT-TT基因型与北京地区汉族人群单纯高血压发病无相关性,但与高血压合并脑梗塞发病显著相关,并且A...     

血管紧张素转换酶基因插入/缺失多态性在人群中的分布及其与原发性高血压的关系

目的　研究血管紧张素转换酶 (angiotensin converting enzyme,ACE)基因 I/ D多态性在人群中的分布特征及其与原发性高血压的关系。方法　应用 PCR方法对 2 966名开滦矿务局职工进行 ACEI/ D基因型检测 ,并分析比较。结果　研究人群中 II、ID、DD基因型分布频率分别为 41.5%、3 8.4%、2 0 .1% ,I、D等位基因分布频率分别为 60 .7%和 3 9.3 %。ACE DD基因型在高血压组 (13 0 8例 )和对照组(1658名 )的频率分别为 18.9%和 2 1.0 % ,差异无显著性 (P>0 .0 5) ,按年龄及性别分层后差异也无显著性(P>0 .0 5)。DD基因型及 D等位基因分布频率有随年龄的增长而下降的趋势 (P<0 .0 0 1)。结论　 ACE I/D多态性与原发性高血压无关 ,基因型及等位基因的分布因年龄不同而不同 ,并提示具有 DD基因型特征的人群早期死亡危险的增加     

西藏藏族人群血管紧张素转换酶基因多态性分布

目的:探讨西藏拉萨、那曲地区藏族健康人群血管紧张素转换酶(ACE)基因第16内含子287bpAlu顺序插入/缺失(I/D)多态性分布。方法:采用聚合酶链反应(PCR)方法检测ACE基因型。结果:76例拉萨藏族人ACE基因型频率分别为Ⅱ=0．395,ID=0．316,DD=0．289,等位基因频率分别为Ⅰ=0．553,D=0．447。81例那曲藏族人ACE基因型频率分别为Ⅱ=0．346,ID=0．444,DD=0．210,等位基因频率分别为Ⅰ=0．568,D=0．432。结论:拉萨、那曲地区藏族人ACE基因型及等位基因频率分布无显著差异;西藏藏族与英国白人和美国黑人相比基因型及等位基因频率均存在显著性差异,但与韩国人及日本人相似。     

新疆哈萨克族隔离群血管紧张素转换酶基因I/D多态性与高血压病的关系

目的 探讨哈萨克族人群血管紧张素转换酶(angiotensin converting enzyme,ACE)基因第16内含子中的插入／缺失(insertion／deletion，I／D)多态性是否为高血压病(essential hypertension，EH)的遗传易患因素。方法 应用聚合酶链反应检测了新疆巴里坤县201例哈萨克族高血压病患者和151名正常人的ACE基因16内含子I／D多态性。结果 哈萨克族正常人群及高血压患者的ACE基因I／D多态性DD、ID、Ⅱ基因型频率分布分别为0．17、0．43、0．40和0．18、0．52、0．30，D和I等位基因分布频率分别为0．39和0．61和0．44、0．56，符合Hardy-Weinberg平衡。群体相关分析结果表明，ACE基因的D及I等位基因分布在高血压病组及正常血压组的差异无显著性(x^2＝1．98，P＝0.16)；基因型频率之间差异也无显著性(x^2＝4．0，P＝0．14)。结论 ACE基因16内含子I／D多态性可能与新疆巴里坤哈萨克族高血压病无关。     

广东肾虚型哮喘病ACE基因的遗传多态性

目的探讨血管紧张素转移酶(ACE)基因插入/缺失多态性与肾虚型哮喘病易感性的关系,为今后的连锁分析打下基础。方法用中医诊断指标对肾虚型哮喘患儿进行初诊,应用扩增片段长度多态性(Amp-FLP)方法检测52例哮喘患儿及其家系以及72例正常儿童的ACE基因型,然后用Hardy-W e inberg定律进行遗传平衡状态分析,用χ2检验进行统计学处理。结果两组儿童ACE基因型(II型、ID型、DD型)频率的分布差异无显著意义(P>0.05)。等位基因I频率为0.692,等位基因D频率为0.308,杂合率为34.6%;I、D的传递规律与理论上预计的完全符合。结论肾虚型哮喘病ACE基因也存在插入/缺失多态性,其中DD基因型与肾虚型哮喘的易感性有关,可能是儿童哮喘的危险因素。I、D在世代中的传递完全符合孟德尔遗传规律。     

哮喘患儿血管紧张素转移酶基因I/D多态性分析

目的探讨血管紧张素转移酶(ACE)基因插入/缺失(I/D)多态性与儿童哮喘的关系.方法采用聚合酶链反应(PCR)方法检测52例哮喘患儿,40例正常儿童的ACE基因型.结果哮喘组DD基因型频率和D等位基因频率分别为35%和45%,而正常对照组为13%和31%.两组比较有显著性差异(P＜0.05),携带DD基因型与非DD基因型的哮喘患儿间最大呼气流量占预计值的百分比无显著性差异(P＞0.05).结论ACE基因DD基因型与哮喘的易感性有关,可能是哮喘的危险因素,而与气道阻塞程度无关.     

α-内收蛋白基因、血管紧张素转换酶基因多态性与盐敏感性高血压及其早期肾损害的相关性

目的 探讨α-内收蛋白(α-adducin)基因G460T和血管紧张素转换酶(angiotensin converting enzyme,AcE)基因插入或缺失(insertion/detetion,I/D)多态性与汉族盐敏感性高血压(salt-sensitive hypertension,SSHT)及早期肾损害的关系.方法 用改良的Sullivan's法(急性口服盐水负荷试验)将200例原发性高血压(essential hypertension,EH)患者分为盐敏感109例和非盐敏感91例,用PCR检测ACE基因I/D多态性基因型,聚合酶链反应-限制性片段长度多态性方法检测α-adducin基因型,用放射免疫法检测晨尿微量白蛋白.结果 (1)EH组的α-adducin基因TT型频率显著高于健康对照组(200名)(P＜0.05),而EH组和对照组ACE I/D基因型分布差异无统计学意义(P＞0.05);盐敏感组的α-adducin基因TT型、α-adducin基因TT+ACE Ⅱ型频率显著高于非盐敏感组(P＜0.05).(2)盐敏感组尿微量白蛋白/尿肌酐显著高于非盐敏感组(P＜0.05);盐敏感组的ACE Ⅱ型尿微量白蛋白/尿肌酐显著高于ID、DD型(P＜0.05),α-adducin基因TT型尿微量白蛋白/尿肌酐显著高于GT、GG型(P＜0.05),α-adduein基因TT+ACE基因Ⅱ型尿微量自蛋白/尿肌酐显著高于其它基因组合型(P＜0.05).结论 α-adducin基因TT基因型或与ACE基因Ⅱ型协同可能是SSHT的遗传标志之一,可能是SSHT早期肾损害的遗传易感因素.     

小儿肾病综合征血管紧张素I转换酶基因多态性研究

目的探讨ACE基因第16内含子插入/缺失多态性与肾病综合征、血清ACE活性的关系. 方法采用聚合酶链式反应(PCR)检测82例肾病综合征患儿和38例正常儿童ACE基因并同时用酶偶联法测血清ACE活性. 结果①82例肾病综合征患儿中ACE基因II型,ID型和DD型频率分别为47.6%(39/82),24.4%(20/82)和28%(23/82).对照组分别为47.3%(18/38),23.7%(9/38)和29%(11/38),肾病综合征患儿和正常儿童之间ACE基因I/D多态性频率差异无显著性意义(p>0.05).②38例正常儿童和82例肾病综合征患儿血清ACE活性比较差异无显著性意义(p>0.05),ACE各基因型中血清ACE活性差异有显著性意义(p<0.01),DD型>ID型>II型. 结论①小儿肾病综合征ACE基因II型,ID型和DD型频率分布和正常儿童差异无显著性意义(p>0.05).②ACE基因多态性与血清ACE活性密切相关.     

PAI-1启动子区4G/5G基因多态性、ACE插入/缺失多态性与脑卒中的相关性

目的 探讨纤溶酶原激活物抑制物-1(PAI-1)启动子区基因多态性和血管紧张素转换酶(ACE)插入/缺失多态性与脑卒中的关系.方法 PCR检测203例脑卒中患者和139名健康对照者PAI-1基因启动子区4G/5G多态性、ACE基因插入/缺失多态性,同时应用比色法测定血清ACE活性,发色底物法测定PAI-1活性.结果 脑...     

ACE、AGT基因联合多态性与高血压合并脑梗塞相关

目的 探讨北京地区汉族人群血管紧张素转化酶(ACE)基因插入/缺失(I/D)多态性与血管紧张素原(ACT)基因CD235 Met-Thr变异(M235T)与高血压合并脑梗塞发生的关系.方法 分别用PCR法、突变基因分离聚合酶链反应(MS-PCR)法检测664例高血压合并脑梗塞患者(CI),678例单纯高血压患者(EH)...     

Lack of association of angiotensin I-converting enzyme gene polymorphism and premature myocardial infarction in Mauritian Indians

Eighty-five young Mauritian Indians, male survivors of premature myocardial infarction (MI) and thus belonging to a high risk group, were compared with 108 stringently selected controls for a possible association between premature MI and an insertion/deletion (I/D) polymorphism in the gene encoding angiotensin I-converting enzyme (ACE). The frequency of the D allele was 0.42 in the MI group and 0.43 in the control group, and thus no association between I/D polymorphism of ACE with susceptibility to early-onset MI was found in this population group. Other gene components of the renin-angiotensin system and lipid metabolism need to be explored to understand the genetic factors involved in causing MI at an early age.     

The angiotensin-I converting enzyme (ACE) gene I/D polymorphism and ACE levels in Pima Indians.

An insertion/deletion (I/D) polymorphism of the angiotensin converting enzyme (ACE) gene is associated with plasma ACE levels in white populations. The occurrence of the I/D polymorphism and relationship to ACE levels was examined in a Pima Indian group (n = 305). The frequency of the D allele was lower in Pimas than whites (0.29 v 0.52 respectively). ACE levels were significantly associated with genotype in both groups (p = 0.0001), which accounted for 6.5% of the variation in ACE levels in Pimas and 18% in whites. The association of the I/D polymorphism with ACE levels confirms the relationship across ethnic groups. The low frequency of the D allele in Pima Indians shows that ethnic differences should be accounted for when studying the ACE gene.     

Association between the ACE I/D gene polymorphism and physical performance in a homogeneous non-elite cohort.

BACKGROUND: I/D polymorphism of the ACE gene may be associated with better endurance performance and a stronger response to exercise training. The aim of this study was to investigate the association between ACE gene polymorphism and athletic performance in a homogeneous cohort. METHODS: Eighty-eight male non-elite Caucasian Turkish athletes with similar training backgrounds for at least for 6 months were studied for ACE gene polymorphisms by PCR analysis. Performance on the 60-meter sprint and middle-distance running tests were evaluated. RESULTS: The distributions of the ACE I/D genotypes were 20.5%, 40.9%, and 38.6% for II, ID, and DD polymorphisms in the whole group (N = 88), respectively. The ACE DD genotype frequency was significantly higher in the superior group (56.7%) than in the poor (37.9%) and mediocre (20.7%) group in middle-distance running performance (chi2 = 11.778; p = 0.019). CONCLUSION: The ACE DD genotype may be related to better short-duration aerobic endurance performance. Larger homogeneous cohorts may help clarify the association between ACE I/D polymorphism and physical performance.     

A prospective evaluation of the angiotensin-converting enzyme D/I polymorphism and left ventricular remodeling in the 'Healing and Early Afterload Reducing Therapy' study

The D/I (deletion, D, insertion, I) polymorphism of the angiotensin-converting enzyme (ACE) gene has been extensively studied for its association with a number of cardiovascular and other disease states. However, its potential association with differential clinical efficacy of ACE inhibitors (ACE-I) administered to patients who had suffered a myocardial infarction (MI), i.e. the prevention of left ventricular (LV) remodeling, has so far not been specifically studied. The aim of the study was to investigate whether the D/I polymorphism of the ACE gene is associated with the incidence of post-MI LV remodeling in patients drawn from the 'Healing and Early Afterload Reducing Therapy' (HEART) Study. The ACE D/I polymorphism was characterized by the polymerase chain reaction (PCR) in 265 subjects from the 'Healing and Early Afterload Reducing Therapy' Study, a double-blind, placebo-controlled trial with the objective of determining whether early or delayed administration of the ACE-I, ramipril, in patients with acute anterior wall MI would be optimal in reducing LV enlargement. Selected frequencies for the ACE D and I alleles were 0.59 and 0.41 (placebo-high dose group), 0.56 and 0.44 (low dose-low dose group), and, 0.60 and 0.40 (high dose-high dose group), respectively. All observed genotype frequencies were in Hardy-Weinberg equilibrium. There was no evidence for an association between genotype and outcome regarding LV size or function, nor with the initial blood pressure response after ACE-I administration (adjusted for covariates). Our data provide no evidence for an association of the ACE D/I polymorphism with the risk of LV remodeling post-MI in the presence of ACE-I therapy, and therefore do not suggest that differential clinical efficacy of ACE-inhibitors is related to this genetic marker.     

Angiotensin converting enzyme gene insertion/deletion polymorphism: case-control association studies in schizophrenia, major affective disorder, and tardive dyskinesia and a family-based association study in schizophrenia

Angiotensin converting enzyme (ACE) is a candidate gene for psychiatric disorders. We examined the frequency of a functional insertion/deletion (I/D) polymorphism in the 16th intron of the ACE gene (located on chromosome 17q23) in groups of patients with schizophrenia (n = 104 and 113), major depression (n = 55), and bipolar disorder (n = 87) compared to healthy control subjects (n = 87). There was no evidence for allelic or genotypic association of the polymorphism with any of the disorders or with tardive dyskinesia (TD) in patients with schizophrenia. In a sample of nuclear families (n = 61) made up of one or more patients with schizophrenia recruited with their parents, there was no evidence for biased transmission of ACE I/D alleles. Particularly in the case of schizophrenia, these findings do not support an association of the ACE I/D polymorphism with the phenotypes examined.     

Cardiovascular risk factors in people with different genotypes in the insertion/deletion (I/D) polymorphism at the locus for angiotensin I-converting enzyme (ACE)

The deletion (D) allele of an insertion/deletion (I/D) polymorphism at the locus for angiotensin I-converting enzyme (ACE) has been reported to be an independent risk factor for myocardial infarction (MI), particularly in people lacking traditional risk factors. Furthermore, a borderline association between Lp(a) lipoprotein level and the I/D polymorphism at the ACE locus was reported in one study. We have searched for possible "level gene" or "variability gene" effects of ACE genes on Lp(a) lipoprotein, total cholesterol (TC), high density lipoprotein (HDL) cholesterol (HDLC), low density lipoprotein (LDL) cholesterol (LDLC), triglycerides (TG), apolipoprotein B (apoB), apolipoprotein A-I (apoA-I), and body mass index (BMI). None of these variables differed significantly between genotypes in the I/D polymorphism in any of three population samples. A single population sample created by combining the three series, exhibited an insignificant trend towards individuals carrying the D-allele having a higher level of Lp(a) lipoprotein than those lacking it, and DD homozygotes had a significantly higher Lp(a) lipoprotein level than the combined group of ID/II individuals (p = 0.03). These results may indicate that the D-allele of the I/D polymorphism at the ACE locus could influence the level of Lp(a) lipoprotein.