血管紧张素转换酶基因多态性在北方汉族、达斡尔族、鄂温克族中的分布

目的：观察血管紧张素转换酶（ACE）基因多态性在北方汉族、达斡尔族和鄂温克族中的分布。方法：采用聚合酶链反应（PCR）检测90例北方汉族,84例达斡尔族和64例鄂温克族ACE基因内含子16的插入/缺失多态标记,得到三种基因型：插入/缺失杂合子（ID）、缺失纯合子（DD）、插入纯合子（Ⅱ）。结果：北方汉族ACE基因频率ID27.8%、DD17.8、Ⅱ54.4%,达斡尔族ID60.7%、DD26.2%、Ⅱ13.1%;鄂温克族ID70.3%、DD21.9%、Ⅱ7.8%。结论：中国北方汉族与达斡尔族和鄂温克族间ACE基因多态性存在差异。     

食管癌肿瘤组织血管紧张素转换酶基因多态性

目的研究食管癌患者肿瘤组织中血管紧张素转换酶(ACE)基因多态性,探讨该基因与食管癌之间的关系。方法共检测50例食管癌患者组织标本,利用聚合酶链反应(PCR)检测ACE基因,观察插入型(ID型)、缺失型(DD型)和Ⅱ型3种基因型多态性分布,并计算I/D等位基因的比例,以10例癌旁正常组织为对照。结果食管癌患者肿瘤组织中ACE基因插入/缺失(I/D)多态性分布特点:ID型、DD型和Ⅱ型基因比例分别为16%,64%,20%,而I/D等位基因分布频率分别为20%和80%,对照组ID型、DD型和Ⅱ型3种基因型的比例分别为40%、30%、30%,其I/D等位基因分布频率分别为30%和70%,两组间DD型基因分布频率有统计学显著性差异(P<0.05)、I/D等位基因分布频率无显著性差异(P>0.05)。结论食管癌患者肿瘤组织中存在ACE基因I/D多态性,DD型基因分布较癌旁正常组织显著升高,结果表明DD基因型高表达可能与食管癌发病相关。     

急性冠脉综合征患者血管紧张素基因插入和(或)缺失多态性与血清血管紧张素活性水平的关系

目的研究169例急性冠脉综合征(ACS)患者和94例健康人血清血管紧张素转换酶(ACE)活性水平，及与ACE基因插入(I)和(或)缺失(D)多态性的关系。方法采用多聚酶链反应(PCR)法。结果急性冠脉综合征患者的血清ACE活性明显高于健康人，这种差异主要表现在DD型和ID型个体中。结论在中国汉族人群中ACE基因I和(或)D多态性变异与血清ACE活性水平有关，它是急性冠脉综合征的一个独立的危险因素。     

ACE基因多态性与ACE、血管紧张素Ⅱ及醛固酮的关系

目的:探讨原发性高血压患者血管紧张素转化酶(ACE)基因插入/缺失(I/d)多态性与血清ACE、血管紧张素Ⅱ及醛固酮的关系。方法:应用PCR技术测定146例高血压患者的ACE基因型,并测定其血清ACE、血管紧张素Ⅱ及醛固酮浓度。结果:ACE在DD、ID、Ⅱ三种ACE基因型之间的差异有显著性,ACE活性DD>IDⅡ,而血管紧张素Ⅱ及醛固酮在三种基因型之间的差异无显著性。结论:ACE基因多态性与ACE密切相关,而与血清血管紧张素Ⅱ及醛固酮没有关系。     

血管紧张素转化酶基因多态性与血管紧张素转化酶和血管紧张素Ⅱ水平的关系

目的探讨原发性高血压患者血管紧张素转化酶(ACE)基因插入/缺失(I/D)多态性与血清ACE和血管紧张素Ⅱ浓度的关系。方法应用PCR技术测定518例高血压患者的ACE基因型,并测定其ACE、血管紧张素Ⅱ浓度。结果II、ID、DD型患者血浆ACE浓度分别为(33.84±15.99)U/L、(41.1±16.80)U/L、(50.34±18.92)U/L,三种基因型之间的差异有统计学意义(P<0.05);血浆血管紧张素Ⅱ浓度在三种基因型之间的差异无统计学意义(P>0.05)。结论ACE基因多态性与血浆ACE浓度相关,而与血浆血管紧张素Ⅱ浓度无关。     

血管紧张素转换酶基因多态性与血管紧张素转换酶抑制剂的降压作用

目的:从基因多态性研究药效的差异。方法:选择健康志愿者99 例,未治疗的原发性高血压病人40 例,用PCR 方法检测血管紧张素转换酶(ACE) 基因的插入与缺失(I/D) 多态性, 用血管紧张素转换酶抑制剂(ACEI) 卡托普利治疗高血压病人。结果:正常人与原发性高血压患者的ACE等位基因频率及基因型频率无显著差异(P>0.05) 。卡托普利降压有效病人与无效病人ACE 基因的I/D等位基因频率及基因型频率,基因缺失型纯合子(DD)或/ 和杂合子(ID) 与非缺失型(II) 也均无显著差异(P>0.05) 。结论: ACE基因的I/ D多态性与原发性高血压的发病无关, ACEI降压作用的个体差异与ACE基因的I/D多态性无关。     

国人ACE基因插入/缺失多态性与冠心病关联性Meta分析

目的:对国人血管紧张素1转换酶(ACE)基因内含子16插入(I)/缺失(D)多态性与冠心病的关联性进行Meta分析。方法:以冠心病组和健康对照组基因型分布的OR值为统计量,全面检索到相关文献并剔除不符合要求的文献,排除发表偏倚的影响。应用REVMAN3.1软件对各研究结果进行一致性检验和采用相应的数学模型进行数据合并。结果:冠心病组631例,健康对照组505例,数据合并结果DD/(ID+II)OR(95％可信区间)为2.72(2.08,3.55),P<0.01。结论:国人ACE/ID多态性的DD基因型与冠心病危险性增加有关联。     

老年心肌梗死与ACE基因多态性关系的研究

最近对血管紧张素转换酶(ACE)基因的研究发现：在ACE基因16内含子中存在一段287bp片段的插入或缺失(I／D)多态型，这种多态型分为DD型(两条等位基因为缺失型)、Ⅱ型(两条等位基因为插入型)、ID型(杂合型)。已有研究证实ACE基因缺失型与冠心病、心肌梗死的发病显相关。我们对35例心肌梗死患进行了ACE基因I／D多态型分析，探讨其与心肌梗死的关系。     

血管紧张素转换酶基因多态性与急性脑血管病的关系

急性脑血管病是多基因遗传性疾病.血管紧张素转换酶(ACE)基因是研究的主要侯选基因.在ACE基因的16内含子中存在一种Alu重复序列的插入(I)和缺失(D)的多态性;从而构成2种等位基因I和D,以及3种DNA基因型:DD(缺失纯合子)、ID(缺失插入杂合子)和II(插入纯合子).本文通过对急性脑血管病(脑出血、脑梗塞)患者ACE基因I/D多态性的研究发现,脑梗死组中在50～92岁年龄组DD纯合型频率高于正常对照组(p＜0.05).50岁及其以上的脑出血患者与正常对照组问DD基因型及等位基因频率比较有显著差异(p＜0.01),并显示高血压病和高血压病家族史、脑卒中家族史是脑梗塞主要危险因素,但未发现上述危险因素与ACE基因型有关联(p＜0.05).并且脑梗死患者ACE基因型与HDL、ApoB有关.     

性别差异对服用氢氯噻嗪后不同ACE基因型高血压患者血清RAAS活性变化的影响

目的:探讨性别差异对不同血管紧张素转换酶(ACE)基因型高血压患者服用氢氯噻嗪后血清肾素-血管紧张素-醛固酮系统(RAAS)活性变化的影响。方法:根据自愿原则,随机纳入829例轻、中度高血压患者。所有患者均停服原有的抗高血压药物,并经过2周的安慰剂清洗期,随后口服氢氯噻嗪12.5mg,qd,连续服药6周。分析不同性别、ACE基因型患者服用氢氯噻嗪后血清RAAS水平的变化及二者之间的交互作用。结果:共776例研究对象完成了研究并纳入分析。DD基因型男性患者服用氢氯噻嗪6周后血清ACE和血管紧张素Ⅱ(AngⅡ)水平升高幅度均高于II、ID基因型男性患者(P<0.05);而在女性中,DD基因型患者血清ACE和AngⅡ水平升高幅度却明显低于II、ID基因型女性患者(P<0.05)。性别与ACE基因插入/缺失(I/D)多态性对服用氢氯噻嗪后血清ACE水平变化存在明显交互作用(P=0.032),对血清AngⅡ水平变化存在临界交互作用(P=0.070)。结论:校正年龄、体重指数和基线血压水平后,性别与ACE基因I/D多态性对服用氢氯噻嗪后血清ACE水平变化存在明显交互作用。     

Deletion polymorphism of angiotensin-converting enzyme gene is associated with postprandial hyperglycaemia in individuals undergoing general check-up

1. Deletion polymorphism, DD, of the angiotensin-converting enzyme (ACE) gene is reported to be related to cardiovascular disease, which is frequently based on insulin resistance. 2. To clarify the relationship between the ACE genotype DD and plasma glucose increases after an oral glucose load, we performed 75 g oral glucose tolerance test (OGTT) in 301 nondiabetic men (age range 30-60 years) undergoing general check-up. 3. Insertion/deletion (I/D) polymorphism of the ACE gene was explored using a polymerase chain reaction. The frequency of the II, ID and DD genotypes was 0.43, 0.43 and 0.14, respectively. 4. There were no differences in baseline clinical characteristics between subjects with each ACE genotype. 5. The mean (+/- SEM) plasma glucose level at 60 min of the OGTT was significantly higher in subjects with the DD genotype (170.8 +/- 6.9 mg/dL) than in subjects with either the II or ID genotype (mean value for two groups 156.6 +/- 2.7 mg/dL; P < 0.05). Moreover, the mean percentage change of plasma glucose after 60 min of the OGTT, a marker of plasma glucose increase, was significantly higher in individuals with the DD genotype than in individuals with either the II or ID genotypes. 6. In contrast, the mean fasting plasma glucose level, the plasma glucose level at 120 min, the glucose response area and the fasting insulin level were not different between individuals with the DD genotype and individuals with other genotypes. 7. In conclusion, subjects with the DD genotype showed transiently higher levels of plasma glucose after an oral glucose load than subjects with other genotypes. Further studies are required to determine whether the association between ACE genotype and postprandial hyperglycaemia influences the incidence of cardiovascular disease and diabetes mellitus.     

在常染色体显性遗传性多囊肾病家系中血管紧张素转换酶基因多态性作用的研究

目的研究人常染色体显性遗传性多囊肾病（ADPKD）家系与血管紧张素转换酶（ACE）基因多态性的关系。方法提取基因组DNA,利用聚合酶链反应——基因多态性分析方法对16个ADPKD家系（包括患者35人,不患病直系亲属30人）ACE基因多态性进行了分析。ADPKD患者中肾功能不全者16人,肾功能正常者19人。结果①有11个家系显示ACE基因多态性在ADPKD家系中具有遗传连锁关系,但无统计学意义（P〉0．05）。②家系中患病与不患病者ACE基因型频率差异不明显（P〉0．05）。③家系中患病与不患病者男女之间ACE基因型频率差异不明显（P〉0．05）。④家系中肾功能不全组与肾功能正常组之间DD型及D等位基因频率差异有显著性（P〈0．05）。结论①ACE基因多态性在ADPKD家系中不提供基因诊断信息。②ACE基因多态性与人ADPKD的发病无明显相关性。③ACE基因多态性与性别无明显关系。④DD型基因型是ADPKD发生肾功不全的易感因素。     

Insertion/deletion polymorphism of the ACE gene and adherence to ACE inhibitors

AIMS: We investigated whether the insertion/deletion (I/D) polymorphism of the ACE gene modified the adherence to ACE inhibitors as measured by the discontinuation of an ACE inhibitor, or addition of another antihypertensive drug. METHODS: This was a cohort study among 239 subjects who started ACE inhibitor therapy. A Cox proportional hazard model was used to calculate relative risk (RR). RESULTS: During follow-up there was no significant difference between subjects with the DD, ID or II genotype (DD vs II; RR = 1.17, 95%CI: 0.78, 1.77 and ID vs II; RR = 1.06, 95%CI: 0.73, 1.55) in adherence. CONCLUSIONS: The I/D polymorphism of the ACE gene does not influence the adherence to ACE inhibitors.     

血管紧张素转换酶基因多态性与纤溶系统的关系

目的 研究血管紧张素转换酶(ACE)基因多态性与纤溶系统之间的关系.方法 选择冠心病、高血压患者126例和健康对照者66例,分别检测ACE基因及多态性,测定血浆中D-二聚体(dD)、凝血酶原时间(PT)、纤维蛋白原(Fg)、凝血酶时间(TT)、活化部分凝血活酶时间(APTT)各值.结果 ①疾病组dD、Fg、APTT水平明显高于对照组(P<0.05),而PT、TT水平明显低于对照组(P<0.05).②基因DD型疾病组dD、Fg水平明显高于ID、Ⅱ型组(P<0.05),而PT、TT、APTT水平明显低于ID、Ⅱ型组(P<0.05),差异有统计学意义.③ ACE基因多态性与dD、Fg浓度间显著正相关(r值分别为0.671、0.702,P<0.01);与PT、TT、APTT浓度间存在显著负相关(r=-0.648、-0.683、-0.653,P<0.001).结论 ACE基因DD型和D等位基因与纤溶系统有关,I等位基因则无关.     

血管紧张素转换酶基因多态性与原发性高血压血栓前状态的关系

目的　探讨血管紧张素转换酶 (ACE)基因I/D多态性与原发性高血压 (EH)及高血压血栓前状态 (PTS)的关系。方法　PCR检测 6 1例原发性高血压病人和正常对照组 2 8例的ACE基因I/D多态性 ;发色底物法测t PA、PAI 1活性 ,酶联免疫吸附双抗夹心法 (ELISA)测vWF含量。结果　高血压组DD基因型频率显著高于对照组 (P <0 0 5 ) ,但D等位基因频率分布在高血压组和正常组之间差异无显著意义 (P >0 0 5 )。高血压组t PA活性降低 ,PAI 1活性、vWF含量升高 (P均 <0 0 0 1)。高血压组DD型t P活性明显低于ID、II型 (P <0 0 0 1) ,而ID、II型之间差异无显著意义 (P >0 0 5 ) ,DD型PAI 1活性明显高于ID、II型(P <0 0 0 1) ,而ID、II型之间差异无显著意义 (P >0 0 5 ) ,vWF在DD、ID、II型三者之间差异无显著意义 (P>0 0 5 )。结论　DD型是原发性高血压发病的危险因素。原发性高血压存在血栓前状态。t PA、PAI 1的变化与血管紧张素转换酶基因I/D多态性有关 ,DD基因型可引起血栓前状态。     

Lack of association between the angiotensin-converting enzyme gene (I/D) polymorphism and diabetic nephropathy in Tunisian type 2 diabetic patients.

OBJECTIVE: The aim of the present study was to investigate whether the angiotensin-converting enzyme (ACE) insertion/deletion (I/D) polymorphism is associated with diabetic nephropathy and type 2 diabetes in the Tunisian population. DESIGN: A case-control study was conducted among 141 unrelated type 2 diabetic patients with (90 patients) or without nephropathy (51 patients) and 103 non-diabetic controls with normal fasting blood glucose. Genotyping was performed using a nested polymerase chain reaction amplification in order to identify correctly heterozygous individuals. RESULTS: The distribution of DD, ID and II genotypes did not significantly differ between type 2 diabetic patients with or without nephropathy (DD: 44%; ID: 46%; II: 10% vs. DD: 41%; ID: 47 %; II: 12%, respectively). There was also no significant statistical difference between the genotype distribution and allele frequencies of the (I/D) polymorphism in all type 2 diabetic subjects compared to non-diabetic controls with normal fasting blood glucose (DD: 43%; ID: 46%; II: 11% vs. DD: 37%; ID: 48%; II: 15%, respectively). CONCLUSIONS: In the present preliminary study, the (I/D) polymorphism within the ACE gene is likely not associated with diabetic nephropathy nor with type 2 diabetes in the Tunisian studied population.     

Association of ACE genotype and predominantly diastolic hypertension: a preliminary study.

BACKGROUND: The insertion/deletion (I/D) angiotensin-converting enzyme (ACE) polymorphism has been established as a cardiovascular risk factor in some populations, but the association with essential hypertension is controversial. Predominantly diastolic hypertension (PDH), or narrow pulse pressure hypertension, has been shown to have increased peripheral resistance. Because a DD genotype has been associated with higher plasma ACE levels and angiotensin II activity, we genotyped PDH patients for ACE I/D polymorphism. METHODS: Ninety-three patients with systolic blood pressure (BP)<140 mmHg systolic and diastolic BP>90 mmHg, or BP>140/90 mmHg with a pulse pressure<45 mmHg, were defined as PDH. The II, ID and DD genotype variants of ACE were characterised by the triple primer nested-PCR method. Results were compared to 75 normotensive control individuals. Statistical significance was assessed by the Chi square test. RESULTS: The genotype distribution among PDH patients was II=20 (21.5%), ID=34 (36.5%), DD=39 (42%), while the distribution among normotensive controls was II=16 (21.4%), ID=42 (56%), DD=17 (22.6%). The difference in genotype distribution between PDH patients and controls was significant (p<0.02). ACE allele frequencies in PDH patients and controls were D=0.60, I=0.40 and D=0.51, I=0.49, respectively, statistically non-significant (ns). CONCLUSION: These results suggest an association between ACE genotype DD and predominantly diastolic hypertension.     

血管紧张素转换酶基因多态性与血脂代谢异常的相关性研究

目的研究血管紧张素转换酶（ACE）基因多态性与血脂异常之间的相互关系。方法对126例冠心病、高血压病患者和100例健康对照者分别进行ACE基因多态性和血脂[血清胆固醇（CH）、甘油三酯（TG）、高密度脂蛋白（HDL-c）、LDL-c]）、Fib浓度测定,分析ACE基因多态性与血脂及Fib之间的关系。结果疾病组DD基因型频率和D等位基因频率较正常对照组明显增高（P〈0.01）;疾病组CH、TG、LDL-c、Fib水平明显高于对照组（P〈0.05）,而HDL-c水平明显低于对照组（P〈0.05）。且疾病组中ACE基因DD型者与ID、Ⅱ型者间相比差异有统计学意义（P〈0.05）;ACE基因多态性与CH、TG、LDL-c及Fib浓度间呈显著正相关（r值分别为0.671,0.702,0.683,0.653,P值均〈0.01）;与HDL-c浓度间存在显著负相关（r=-0.648,P〈0.001）。结论 ACE基因DD型和D等位基因与血脂代谢异常及血浆Fib有关,而与Ⅰ等位基因无关。