急性冠状动脉综合征低/高危人群血管紧张素转换酶基因插入/缺失多态性分析

目的 探讨ACE基因插入/缺失(I/D)多态性在急性冠状动脉综合征低/高危人群发病中的作用.方法 根据apoB、BMI将169例急性冠状动脉综合征(ACS)患者及94例正常健康人分为低危和高危人群,利用多聚酶反应(PCR)方法对这些患者的血管紧张素转换酶(ACE)基因插入/缺失多态性变异进行对比分析.结果ACS患者ACE基因DD型及D等位基因频率明显高于对照组(DD,0.385:0.213.P<0.05;D,0.583:0.441,P相似文献   

唐山地区汉族人群血管紧张素转换酶基因多态性与冠心病的相关性研究

目的探讨血管紧张素转换酶(ACE)基因插入/缺失(insertion/deletion,I/D)多态性与冠状动脉粥样硬化性心脏病(冠心病)及冠状动脉(冠脉)病变支数间的关系。方法选取住院患者332例,其籍贯均为河北唐山地区,行冠脉造影术检查判定其是否患有冠心病及其冠脉病变支数。根据造影结果分为冠心病组(至少有一支冠脉主支血管狭窄≥50%)233例(稳定型心绞痛亚组150例、急性冠脉综合征组亚组83例)和对照组99例(任一冠脉主支血管狭窄50%)。应用聚合酶链式反应技术检测患者ACE基因I/D多态性,包括II型(插入型纯合子)、ID型(插入与缺失型杂合子)、DD型(缺失型纯合子)三组,并分析不同组别间I/D多态性差异。结果冠心病组及急性冠脉综合征亚组ACE基因DD型和D等位基因频率显著高于对照组(P0.05)。稳定型心绞痛组与对照组比较DD基因型和D等位基因频率间并无显著差异(P0.05)。不同冠脉病变支数在ACE基因型间差异无统计学意义(P0.05)。结论唐山地区汉族人群ACE基因I/D多态性中DD型和D等位基因发生率冠心病及急性冠脉综合征患者中增高,但与冠脉病变支数无关。     

肾素-血管紧张素系统双基因多态性与老年人冠心病慢性心力衰竭的关系

目的:探讨中国南方部分汉族人群的老年冠心病患者中,肾素-血管紧张素系统中的关键成分即血管紧张素转换酶(ACE)及血管紧张素原(AGT)双基因多态性与慢性心力衰竭(心衰)发病的关系.方法:应用聚合酶链反应及限制性片断长度多态性技术,对396例老年冠心病患者的ACE基因插入/缺失(I/D)及AGT基因M235T多态性进行检测.将其中196例合并慢性心衰患者作为病例组,其余200例心功能正常者作为对照组.结果:①病例组DD基因型频率及D等位基因频率均高于对照组;②病例组TT基因型频率及T等位基因频率均高于对照组;③联合分析ACE与AGT基因多态性显示,两组中同时具有DD型ACE基因及TT型AGT基因的频率分别为28.6%及15.0%,前者明显高于后者.结论:DD型ACE基因及TT型AGT基因可能是中国南方部分汉族老年冠心病慢性心衰患者发病的遗传危险因素,ACE和AGT基因在慢性心衰的发生中具有协同作用.     

血管紧张素转换酶基因多态性与不同性别慢性心力衰竭患者发病的相关性研究

目的探讨我国南方汉族人群中,血管紧张素转换酶(ACE)基因多态性与不同性别慢性心力衰竭(CHF)发病的关系。方法应用聚合酶链反应技术测定82例男性和48例女性CHF患者(试验组),以及89名男性和41名女性健康者(对照组)的ACE基因插入/缺失(I/D)多态性,并进行统计学比较。结果共检测出3种ACE基因型,分别为II型、ID型和DD型。试验组患者DD基因型及D等位基因均高于同性别对照组;与非DD型者相比,男性DD型者发生CHF的相对风险率为1.918;女性DD型者发生CHF的相对风险率为2.727。结论ACE基因I/D多态性与中国南方汉族人群不同性别CHF的发生均相关,D等位基因可能是该地区CHF发病的遗传危险因素。与男性相比,DD基因型女性罹患CHF的可能性更大。     

血管紧张素转换酶基因多态性与非杓型高血压的关系

目的研究血管紧张素转换酶 ( ACE)基因插入 /缺失 ( I/ D)多态性与非杓型高血压 ( EH)的关系。方法　 1应用聚合酶链反应 ( PCR)方法扩增 5 0例正常人、99例高血压患者的 ACE基因上 2 87bp片段 ,根据插入 ( I)或 /缺失( D)来判断其多态性。 2高血压患者行 2 4h动态血压监测 ( ABPM) ,根据 ABPM结果分为杓型 EH组和非杓型 EH组。结果　 1非杓型组与健康对照组相比 ,其 D等位基因及 DD基因型显著升高。 2非杓型组与杓型组相比 ,其 D等位基因及 DD基因型显著升高。3杓型组与健康对照组相比 ,ACE基因型和等位基因频率无显著性差异。结论　ACE基因多态性与非杓型高血压有关联性 ,DD基因型提示可能与高血压昼夜节律改变有关     

ACE I/D基因多态性与武汉地区原发性高血压代谢综合征关系的探讨

目的:探讨武汉地区原发性高血压(EH)代谢综合征(MS)与血管紧张素转换酶(ACE)基因插入/缺失(I/D)多态性的关系.方法:701例武汉地区汉族人群分为3组,其中血压正常对照组303人,EH患者398例,其中EH患者中符合代谢综合征者189例,不伴随代谢综合组209例.应用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)法测定3组人群中ACE I/D基因多态性.结果:①ACE各基因型频率在正常对照组与EH(包括MS与非MS组)组间差异无统计学意义;②ACE Ⅱ基因型EH合并MS患者的胆固醇水平明显高于DD基因型.结论:ACE基因多态性与武汉地区原发性高血压无关,但D等位基因频率明显低于某些西方国家人群;对于EH合并代谢综合征的患者,其胆固醇水平和ACE Ⅱ基因型明显相关.     

血管紧张素转换酶基因多态性与缺血性脑卒中后3个月认知的关系

目的探讨血管紧张素转换酶(ACE)基因插入/缺失(I/D)多态性与缺血性脑卒中后3个月非痴呆认知功能障碍(CIND)的关系。方法初发缺血性脑卒中患者185例,根据脑卒中后3个月认知功能测定将患者分为CIND组(42例)和对照组(143例)。PCR法测定ACE基因I/D多态性,采用简易智能状态量表和美国精神疾病统计和诊断手册第4版修订本进行认知测定。结果 CIND组与对照组ACE基因I/D多态性的基因型分布与Hardy-Weinberg平衡的理论频数之间差异无统计学意义。单因素分析发现,ACE基因DD基因型人群CIND发病风险是Ⅰ等位基因携带者的2.460倍(95% CI:1.084～5.582,P0.05)。多因素logistic回归分析发现,在共显性模式中,DD基因型人群CIND发病风险是Ⅱ基因型的3.185倍(95% CI:1.148～8.842,P0.05);在隐性遗传模式中,DD基因型人群CIND发病风险是Ⅰ等位基因携带者的2.852倍(95% CI:1.058～7.687,P0.05)。结论ACE DD基因型是缺血性脑卒中后CIND的独立危险因素,携带ACE DD基因型的患者可能更易发生CIND。     

冠心病患者血管紧张素转换酶基因多态性及其与血清血管紧张素转换酶水平的关系

为研究冠心病患者血管紧张素转换酶（ACE）基因插入／缺失（I／D）多态性分布及其与血清ACE水平的相关性，应用多聚酶链反应方法测定了61例冠心病患者和63例健康人群的ACE基因I／D多态性，并采用微量比色法测定其血清ACE水平。结果发现，冠心病患者ACE基因DD型出现频率显著高于对照组，且DD基因型者具有较高的血清ACE水平。提示ACE基因I／D多态性与血清ACE水平密切相关，DD型ACE基因可能是中国人冠心病发病的独立危险因子。     

CE基因多态性及其血清水平与心肌梗死的关系

目的　探讨血管紧张素转换酶(ACE)基因插入/缺失(I/D)多态性及其血清水平与老年心肌梗死的关系。方法　应用聚合酶链反应(PCR)方法检测60岁以上心肌梗死患者35例及正常对照者48例的ACE基因。结果　老年心肌梗死组ACE基因中缺失型(DD型)分布(60%)明显高于正常对照组(29.17%)(P＜0.05),缺失型(D型)等位基因频率(74.29%)也明显高于对照组(51.05%)(P＜0.05)。DD型血清ACE水平明显高于II型(P＜0.001)。结论　ACE基因缺失型及高血清ACE水平可能是老年人心肌梗死的一个重要危险因素。     

原发性高血压代谢综合征与血管紧张素转换酶基因插入/缺失多态性关系的探讨

目的 :探讨原发性高血压 (EH)代谢综合征与血管紧张素转换酶 (ACE)基因插入 /缺失多态性的关系。方法 :选取EH患者 2 0 2例 ,其中男 116例 ,女 86例 ,年龄 30～ 72 (5 9.5 4± 9.2 6 )岁。符合代谢综合征者 10 6例 ,非代谢综合征 96例。应用聚合酶链反应 (PCR)测定两组ACE基因插入 /缺失多态性。结果 :EH代谢综合征组与非代谢综合征组ACE基因DD、ID、II基因型间无显著相关性 (χ2 =2 .5 4 5 ,P 0 .0 5 )。代谢综合征组ACE多态性基因型与腰围、高密度脂蛋白胆固醇 (HDL C)密切相关 (P <0 .0 1) ;与腰围 /臀围、三酰甘油 (TG)密切相关 (P <0 .0 5 ) ;与血压、血糖、胰岛素无关 (P 0 .0 5 )。代谢综合征组ACE基因DD、ID基因型腰围较II基因型显著增加 (P <0 .0 1,<0 .0 5 ) ;DD基因型腰围 /臀围、TG较II基因型显著增加 (P <0 .0 5 ) ;ACE基因DD基因型HDL C较II基因型显著降低 (P <0 .0 5 ) ;ACE基因DD、ID、II基因型间血压、血糖、胰岛素差异无统计学意义 (P 0 .0 5 )。结论 :EH代谢综合征与ACE基因多态性无显著相关性。但是代谢综合征患者肥胖、脂代谢紊乱与ACE基因多态性密切相关 ,而血压水平、胰岛素敏感性却与ACE基因多态性无关。     

The insertion/deletion polymorphism of the angiotensin-converting enzyme gene determines coronary vascular tone and nitric oxide activity

OBJECTIVES: We investigated whether the insertion/deletion (I/D) polymorphism in the angiotensin-converting enzyme (ACE) gene modulates vasomotor tone and endothelial function. BACKGROUND: The deletion allele of the ACE I/D polymorphism has been associated with increased incidence of cardiovascular pathology. The risk is synergistically increased in patients who also possess the C allele at position 1,166 of the angiotensin type I (AT1) receptor gene. METHODS: In 177 patients with coronary atherosclerosis or its risk factors, we investigated endothelial function with intracoronary acetylcholine (ACH), endothelium-independent smooth muscle function with sodium nitroprusside (SNP) and basal nitric oxide activity with L-NG monomethyl arginine. RESULTS: Compared with ACE II genotype, patients with the ACE DD genotype had lower coronary microvascular and epicardial responses with SNP (coronary blood flow increase 196 +/- 26% vs. 121 +/- 11%, p = 0.003, and diameter increase 21.9 +/- 2% vs. 17 +/- 1%, p = 0.03, ACE II vs. DD, respectively). L-NG monomethyl arginine induced greater constriction in patients with the ACE DD compared with ACE II genotype (coronary blood flow -10 +/- 4% vs. 11 +/- 5%, p = 0.003, ACE DD vs. II and diameter constriction -6.3 +/- 1.2% vs. -1.9 +/- 1.2%, p = 0.01, respectively, in patients with atherosclerosis). No difference in ACH-mediated vasomotion was detected between the three ACE genotypes. The AT1 receptor polymorphism did not influence responses to either SNP or ACH. CONCLUSIONS: Patients possessing the D allele of the ACE gene have increased vascular smooth muscle tone. The enhanced tone appears to be counterbalanced by an increase in basal nitric oxide activity in patients with atherosclerosis.     

血管紧张素转换酶和血管紧张素受体基因多态性与冠心病的关系

目的　探讨深圳地区冠心病 (CAD)与血管紧张素转换酶 (ACE)基因与血管紧张素 的 1型受体 (AT1R)基因多态性的关系。方法　分别采用 PCR及 PCR- Afl II酶切法 ,检测 89例 CAD患者和 14 8例健康对照的 ACE和AT1R基因型。结果　 CAD组与对照组比较 ,ACE DD基因型频率 (2 4 .7%比 8.1% ,P<0 .0 1)及 D型等位基因频率 (4 4 .4 %比 33.4 % ,P<0 .0 5 )均为升高。 CAD组与对照组 AT1R基因型频率分布无显著性差异 (P>0 .0 5 )。携带 AT1R C等位基因的个体患 CAD的风险与其同时携带 ACE DD基因型无关 (P>0 .0 5 )。结论　深圳地区CAD的发生和发展可能与 ACE基因 I/ D多态性有关 ,而与 AT1R基因 A116 6 C多态性无关     

Angiotensin-converting enzyme I/D gene polymorphisms and effects of left ventricular hypertrophy in Turkish myocardial infarction patients

OBJECTIVE: Since the initial report of the association of the deletion/insertion (D/I) polymorphism in the gene for angiotensin-converting enzyme (ACE) with myocardial infarction (MI), there has been considerable controversy. Some have found the D allele to be associated with MI, coronary heart disease (CHD) or other cardiac pathologies, while others have not. In view of the clinical importance of the ACE as a major marker of cardiovascular diseases, we investigated the I/D polymorphism of the ACE gene in Turkish patients with acute myocardial infarction in comparison with control subjects. METHODS AND RESULTS: Polymerase chain reaction, and agarose gel electrophoresis techniques were used to determine the ACE genotype in 214 subjects. The frequencies of ACE D and ACE I allele among the patients with acute myocardial infarction were 65.54% and 36.45% and in the control subjects 57.62% and 42.37%, respectively. ACE DD genotypes were found higher in patients with left ventricular hypertrophy (LVH) than without LVH (55.6% vs. 37.7%; X2: 2.534, p > 0.05). CONCLUSIONS: The ACE D allele is more frequent in patients with acute myocardial infarction than in controls. Moreover ACE DD genotype might be associated with an increased risk of left ventricular hypertrophy.     

冠心病患者血管紧张素转换酶基因多态性及其与血清血管紧张素转换酶水平的关系

为研究冠心病患者血管紧张素转换酶（ＡＣＥ），基因插入／缺失（Ｉ／Ｄ）多态性分布及其血清ＡＣＥ水平的相关性，应用多聚酶链反应方法测定了６１例冠心病患者和６３例健康人群的ＡＣＥ水平，结果发现，冠心病患者ＡＣＥ基因ＤＤ型出现频率显著对照组，且ＤＤ基因型者具有较高的血清ＡＣＥ水平，提示，ＡＣＥ基因Ｉ／Ｄ多态性与血清ＡＣＥ水平密切相关，ＤＤ型ＡＣＥ基因可能是中国人冠心病发病的独立危险因子。     

血管紧张素转换酶基因多态性与冠脉病变严重程度的相关性研究

目的探讨血管紧张素转换酶(ACE)基因I/D多态性与冠心病及冠脉病变严重程度的关系.方法对122例冠心病患者进行冠状动脉造影,判定冠脉病变支数(狭窄程度≥75%)和危险记分.用聚合酶链式反应(PCR)技术检测病例组和80例健康人群ACE基因多态性.结果ACE基因型分布和等位基因频率在病例组和对照组间差异有显著性,病例组DD基因型(38.5%)和D等位基因频率(55%)显著高于对照组(13.7%,41%;P＜0.05).冠脉病变支数和危险记分在ACE基因型间差异无显著性(P＞0.05).结论ACE基因多态性中DD型和D等位基因是冠心病发病的独立危险因素,但与冠脉病变严重程度不相关.     

Relation between the insertion/deletion polymorphism of the angiotensin I converting enzyme gene and restenosis after coronary stenting

BACKGROUND: Observations with intravascular ultrasound demonstrated that neointimal hyperplasia is the predominant factor responsible for in-stent restenosis. Experimental data suggest that angiotensin I converting enzyme (ACE) plays a role in the thickening of neointima after balloon denudation. Insertion/deletion (I/D) polymorphism of the ACE gene is significantly associated with plasma level of ACE and subjects with D/D genotype have significantly higher plasma levels of ACE than normal. OBJECTIVE: To investigate whether this polymorphism influences the risk of restenosis after coronary stenting. METHODS: We genotyped 158 patients who had undergone single-vessel coronary stenting for the ACE I/D polymorphism. RESULTS: Of the 158 patients, 56 (35%) had the D/D genotype, 71 (45%) had the I/D genotype and 31 (20%) had the I/I genotype. Prevalences of genotypes were compatible with Hardy-Weinberg equilibrium and distributions of ACE genotype among patients and 132 healthy controls from the same geographic area did not differ. At follow-up (after a median duration of 5.4 months), overall rates of angiographic restenosis and of revascularization of target lesion (RTL) were 32.3 and 22.8%, respectively. Of 51 patients with angiographic restenosis, 31 (60.8%) had focal and 20 (39.2%) had diffuse patterns of restenosis. Diffuse in-stent restenosis was significantly more prevalent among patients with D/D genotype (P = 0.016). Multiple stepwise logistic regression analysis identified ACE I/D polymorphism as the independent predictor of angiographic restenosis and RTL. Relative risk of angiographic restenosis was 6.29 [95% confidence interval (CI), 1.80-22.05, P = 0.0004] for D/D genotype and 3.88 (95% CI 1.11-13.12, P = 0.029) for I/D genotype, whereas relative risk of RTL was 7.44 (95% CI 1.60-34.58, P = 0.01) for D/D genotype and 3.88 (95% CI 0.083-18.15, P = 0.085) for I/D genotype. CONCLUSIONS: The ACE I/D polymorphism is significantly associated with risk of angiographic and clinical restenosis after coronary stenting. Angiographic pattern of restenosis is also significantly associated with I/D polymorphism, diffuse type being more prevalent among subjects with D/D genotype.     

ACE基因I/D多态性与冠状动脉支架内再狭窄相关性研究

目的研究冠状动脉内行药物洗脱支架置入术患者,术后支架内再狭窄发生情况与ACE基因I/D多态性的关系。方法所有患者行冠状动脉造影检查,PCR方法测定ACE基因型。根据血管造影结果分为再狭窄组（病变狭窄≥50%）和无再狭窄组（病变狭窄〈50%）。采用SPSS18.0软件比较再狭窄组与无再狭窄组的临床基本特征、冠脉造影资料,以及与ACE基因型的关系。结果此次研究共纳入396名行药物洗脱支架置入术的冠心病患者,支架内再狭窄发生40例,再狭窄率为10.1%。再狭窄组与无再狭窄组的临床基本资料、冠脉造影资料均无显著性差异（P〉0.05）。再狭窄组的ACEDD基因型35.56%、ACEDI基因型16.39%、ACEII基因型3.85%。再狭窄组与ACE基因I/D多态性具有相关性（P〈0.001）。结论冠状动脉内行药物洗脱支架置入术患者术后支架再狭窄发生与ACEDD基因型具有显著相关性。     

Searching for a better assessment of the individual coronary risk profile. The role of angiotensin-converting enzyme, angiotensin II type 1 receptor and angiotensinogen gene polymorphisms.

BACKGROUND: Polymorphisms within renin angiotensin system genes have been investigated as risk factors for coronary artery disease in different populations with contradicting results. The aim of this study was to investigate the genotype distribution and the allele frequencies of ACE, AT1R and AGT gene polymorphisms as coronary artery disease factors and their synergistic effects on coronary risk in an Italian population. METHODS AND RESULTDS: In this study ACE, AT1R and AGT gene polymorphisms were investigated in 205 consecutive coronary artery disease patients and in 209 controls. These polymorphisms were analysed by polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP). The ACE D and AGT 235T allele, but not AT1R C allele, frequency was statistically significant in patients. An association between coronary artery disease and ACE DD, AT1R CC and AGT TT genotype, was found by univariate analysis (OR 2.06 P=0.0007, OR 2.49 P=0.009, OR 1.87 P=0. 019, respectively). At multivariate analysis ACE DD and AT1R CC genotype (OR 1.81 P=0.011, OR 2.61 P=0.011, respectively) remained associated with coronary heart disease. Subjects carrying the ACE DD genotype and AT1R C allele showed a stronger association with myocardial infarction (OR=4.02, P<0.0001). CONCLUSION: Our report indicates the increased risk of coronary artery disease in the presence of ACE DD and AT1R CC genotypes independent of other risk factors, in Italian patients. The present study stresses the relevance of screening for genetic risk factors.