肾素-血管紧张素系统基因多态性与高血压病患者伊贝沙坦降压幅度关系的研究

目的：对原发性高血压患者采用血管紧张素Ⅱ受体拮抗剂（伊贝沙坦）单药治疗，在观察降压疗效的同时测定RAS基因多态性靶位点：ACEI／D、ACTM235T、AT1R 1166A／C、573T／C、1062A／G、-521C／T的基因型，旨在发现与血管紧张素Ⅱ受体拮抗剂降压疗效相关的基因多态性位点。方法：符合WHO／ISH高血压诊断标准轻、中度高血压患者117例，服用伊贝沙坦单药治疗8周，在临床观察疗效的同时，应用RFLP及PCR的方法对患者血白细胞基因组DNA进行RAS基因多态性位点ACEI／D、AGT M235T、AT1R 1166A／C、573T／C、1062A／G、-521C／T基因型的分析。结果：含ACED等位基因、的患者服用伊贝沙坦后SBP下降幅度明显大于Ⅱ型基因型患者，两者之间有统计学差异（P〈0．05）；含AT1R 573T等位基因的患者服用伊贝沙坦后收缩压下降幅度明显大于CC纯合基因型患者，两者之间有统计学差异（P〈0．05）；AGT M235T、AT1R 1166A／C、-521C／T各基因型之间BP下降幅度均无显著差异。所有入选患者未发现AT1R 1062A→G的变异。结论：肾素-血管紧张素系统基因多态性位点ACEI／D及AT1R 573T／C与ARB类药物的药物敏感性有一定相关性。     

不同性别高血压病患者肾素-血管紧张素系统多基因多态性关联研究

目的探讨不同性别高血压病患者与肾素-血管紧张素系统,包括血管紧张素Ⅱ-1型受体(AT1R)基因、血管紧张素转化酶(ACE)和血管紧张素原(AGT)多基因多态性的相关性。方法应用多聚酶链式反应-限制性酶切法(PCR-RFLP)检测95例高血压病患者和98例健康对照者的AT1R基因1166位点、ACE基因I/D以及AGT基因M235T基因型,比较不同性别两组间基因型和等位基因型的分布频率。结果男性高血压组AT1R基因、AC/CC基因型和ACE基因DD基因型频率高于对照组,1166C和D等位基因频率明显高于对照组;AGT基因TT基因型及T等位基因频率较对照组为高,但差异无统计学意义;在女性,ACE基因D等位基因频率较其对照组为高(P0.05),余各基因型和等位基因频率在病例组与对照组之间均未见差异。结论肾素-血管紧张素系统多个基因位点变异与男性高血压病发病有关,只有较少基因位点多态性参与女性发病。     

ACE基因I／D、AT1R基因A1166C多态性与奥美沙坦酯降压作用的关系

目的探讨血管紧张素转换酶（ACE）基因I／D、血管紧张素Ⅱ-1型受体（ATlR）基因A1166C多态性与奥美沙坦酯降压作用的关系。方法76例轻、中度高血压（EH）患者服用奥美沙坦酯治疗8周;用聚合酶链式反应一限制性片段长度多态性对其血白细胞基因组DNA肾索-血管紧张素-醛固酮系统基因多态性位点ACEI／D、ATlRA1166C基因型进行检测。结果ACE基因含D等位基因患者的SBP、DBP、脉压降幅及降压总有效率均高于含I等位基因者,DD＋AA基因型患者的SBP降幅高于DD＋AC基因型者（P均〈0．05）。结论ACE基因含D等位基因EH患者对奥美沙坦酯降压治疗敏感;ACE、AT1R基因联合作用可能影响奥美沙坦酯的降压疗效。     

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     

原发性高血压患者血管紧张素转化酶和血管紧张素受体基因多态性的研究

目的　探讨血管紧张素转化酶 ( ACE)及血管紧张素 - 1型受体 ( AT1 R)基因多态性与原发性高血压 ( EHT)的关系。方法　应用聚合酶链反应及 PCR加酶解方法检测 1 50例健康人 ( NT)及 1 52例 EHT患者 ACE I/ D基因多态性的 ACE及 AT1 R A1 1 6 6 C突变。结果　 EHT组ACE I/ D基因多态性等位基因频率 I为 0 .50 ,D为 0 .50 ,D等位基因频率及基因型频率显著高于 NT组 ( P<0 .0 5) ;而两者之间的 AT1 R A1 1 6 6 C的C等位基因频率差异无显著性 ( P>0 .0 5)。结论　 ACE基因可能是 EHT的重要遗传因素 ,AT1 R基因 A1 1 6 6 C多态性与 EHT无关     

血管紧张素转化酶与血管紧张素Ⅱ 1型受体基因多态性与心力衰竭预后的相关性研究

目的:评价血管紧张素转化酶(ACE)与血管紧张素Ⅱ 1型受体(AT1 R)A1166C基因多态性以及其相互作用对慢性心力衰竭(CHF)患者预后的影响.方法:用聚合酶链式反应(PCR)方法鉴定432例左室收缩功能障碍性心力衰竭左室射血分数[(LVEF)<0.45]患者的ACE、AT1 R基因型,分析ACE、AT1 R基因多态性以及其协同作用对心力衰竭患者生存率的影响.结果:ACE I/D基因型分布频率:纯合子DD基因型31.1%,纯合子II基因型18.6%,杂合子ID基因型50.3%.ACE DD型基因与较高NYHA心功能分级密切相关(P<0.05).AT1R基因型分布频率:纯合子CC基因型8.6%, 纯合子AA基因型50.0%, 杂合子AC基因型41.4%.AT1R 1166 C等位基因与较低NYHA心功能分级相关(P<0.05).ACE D等位基因的生存率比Ⅰ等位基因明显降低(P<0.05),而AT1 R A1166C 3种基因型的生存率差异无统计学意义(P>0.05).分析ACE I/D与AT1R 1166 A/C基因多态性的协同作用对患者生存率的影响,无论在AT1 R AA型纯合子组还是在AT1R C等位基因组(AC和CC型),ACE II/ID/DD 3种基因型的生存率差异无统计学意义(P>0.05).结论:ACE DD基因型的心力衰竭患者其生存率明显降低,可作为心力衰竭患者预后的预测因素.AT1R 1166位点A/C等位基因多态性与CHF预后无关,且ACE I/D和AT1R 1166 A/C基因多态性的协同作用对CHF患者预后的无影响.     

原发性高血压血管紧张素转化酶基因I/D多态性与厄贝沙坦降压疗效及血浆肾素血管紧张素-醛固酮系统水平的相关性

目的分析原发性高血压(EH)ACE基因I/D多态性与厄贝沙坦降压疗效及血浆肾素-血管紧张素-醛固酮系统(RAAS)水平的相关性。方法纳入云南汉族、白族及傣族EH患者450例,检测ACE基因多态性,根据基因型进行分组,所有患者给予厄贝沙坦治疗8 w后评估降压疗效,监测治疗前后血浆RAAS活性的变化。结果 EH患者中ACE基因I/D多态性分布与种族无明显关系(P>0.05);不同基因型中厄贝沙坦降压疗效、治疗前后血浆RAAS活性降低程度具有差异性,表现为DD型>ID型>Ⅱ型;采用Logistic回归分析治疗有效率的影响因素,血管紧张素Ⅱ活性改变与治疗有效率呈正相关(OR值1.038)。结论 ACE I/D多态性可能是影响EH患者对厄贝沙坦降压反应的重要指标,通过调节血管紧张素Ⅱ活性形成。     

血管紧张素转换酶和血管紧张素Ⅱ-1型受体基因多态性与冠心病的相关性分析

目的研究血管紧张素转换酶（ACE）基因I／D多态性和血管紧张素Ⅱ-Ⅰ型受体（AT1R）基因A1166／C多态性与冠心病（CHD）的关系。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130例CHD组和90例对照组ACE和AT1R基因多态性。结果ACE—DD基因型频率在CHD组显著高于对照组（38．5％，14．4％，P〈0．001）。AT1R—AC基因型在两组间差异无显著性（13．1％，10％，P〉0．05），但合并AC基因型的DD型患者发生CHD和MI的OR值（5．836和3．985）明显高于合并AA型（3．102和2．979）。结论ACE基因I／D多态性中DD基因型是冠心病发病的独立危险因素之一，AT1R—C等位基因增加ACE—DD型发生CHD和MI的危险，二者具有协同作用。     

血管紧张素转换酶基因多态性和血管紧张素Ⅱ受体-1基因多态性与原发性高血压

目的探讨血管紧张素转换酶(angiotensin converting enzyme ,ACE)基因多态性和血管紧张素Ⅱ受体-1 (AT1R)基因多态性与原发性高血压(Essential Hypertension, EH)的关系,以及这两种基因多态性对于EH的发病是否有协同作用.方法对740名开滦集团公司职工进行10年的纵向研究,应用聚合酶链反应和限制性酶切方法检测ACE基因第16位内含子插入/缺失(I/D)多态性分布及AT1R基因A1166C多态性分布.结果 10年前或10年后EH组的ACE各基因型及等位基因频率与同期正常血压组比较无显著差异.10年前或10年后EH组的AT1R各基因型及等位基因频率与同期正常血压组比较无显著差异.10年前或10年后EH组中同时具有DD基因型和AC基因型的频率分布与同期正常血压组比较均无显著差异.10年前或10年后的男性EH亚组中,同时具有DD基因型和AC基因型的频率分布与同期正常血压组比较有统计学差异.结论血管紧张素转换酶基因的I/D多态性和血管紧张素Ⅱ受体-1基因A1166C多态性与原发性高血压无关,DD基因型和 AC基因型联合作用时对男性原发性高血压的发生可能有协同作用.     

血管紧张素转换酶和血管紧张素受体基因多态性与高血压微量白蛋白尿的关系

目的通过分析血管紧张素转换酶(ACE)、血管紧张素Ⅱ受体1型(AT1R)基因与高血压微量白蛋白尿的关系,试图从基因水平寻找高血压性肾损害的高危人群.方法高血压患者135例与正常对照组62例均行ACE、AT1R基因多态性和尿白蛋白分泌率(UAE)分析,基因检测采用PCR技术.结果①高血压伴微量白蛋白尿组的ACEDD型基因和D等位基因的频率明显高于不伴微量白蛋白尿组;②AT1R的基因型和等位基因的频率在伴和不伴微量白蛋白尿者之间没有明显差另结论ACEDD型基因可能是高血性肾损害的危险预测因子.     

Angiotensin converting enzyme gene polymorphism predicts blood pressure response to angiotensin II receptor type 1 antagonist treatment in hypertensive patients

OBJECTIVES: To determine whether polymorphisms in the renin-angiotensin system can predict blood pressure-lowering response to antihypertensive treatment; more specifically, in response to treatment with irbesartan or atenolol. DESIGN AND METHODS: Eighty-six patients with hypertension were randomized to double-blind treatment with either the angiotensin II type 1 receptor antagonist irbesartan or the beta1 adrenergic receptor blocker atenolol and followed for 3 months. We analysed angiotensinogen T174M and M235T, angiotensin converting enzyme (ACE) I/D and angiotensin II type 1 receptor A1166C polymorphisms and related them to blood pressure reduction. RESULTS: The mean reductions in blood pressure were similar for both treatments. In the irbesartan group, individuals homozygous for the ACE gene I allele showed a greater reduction in diastolic blood pressure, exceeding those with the D allele (-18 +/- 11 SD versus -7 +/- 10 mmHg, P = 0.0096). This was not the case during treatment with atenolol, and the interaction term between type of treatment and ACE II genotype was significant (P = 0.0176). The angiotensinogen and angiotensin II type 1 receptor polymorhisms were not related to the response to treatment. CONCLUSIONS: ACE genotyping predicted the blood pressure-lowering response to antihypertensive treatment with irbesartan but not atenolol. Thus, specific genotypes might predict the response to specific antihypertensive treatment.     

The relationship between the plasma concentration of irbesartan and the antihypertensive response is disclosed by an angiotensin II type 1 receptor polymorphism: results from the Swedish Irbesartan Left Ventricular Hypertrophy Investigation vs. Atenolol (SILVHIA) Trial

BACKGROUND: The aim of this study was to investigate the effect of the plasma concentration of irbesartan, a specific angiotensin II type 1 receptor (AT1R) antagonist, and the blood pressure response in relation to AT1R gene polymorphisms. METHODS: Plasma irbesartan was analyzed in 42 patients with mild-to-moderate hypertension and left ventricular hypertrophy from the Swedish Irbesartan Left Ventricular Hypertrophy Investigation vs. Atenolol (SILVHIA) trial, who were treated with irbesartan as monotherapy for 12 weeks. Blood pressure and irbesartan concentration were measured at trough, i.e., 24 +/- 3 h after the last dose. Five AT1R gene polymorphisms were analyzed by minisequencing. RESULTS: Neither the plasma concentration of irbesartan, nor any of the AT1R polymorphisms were associated with the blood pressure response to irbesartan treatment. However, the interaction term between the plasma concentration of irbesartan and the AT1R C5245T polymorphism was related to the reduction in systolic blood pressure after 12 weeks of treatment (P = 0.025). Furthermore, the plasma concentration of irbesartan was related to the change in systolic blood pressure in individuals homozygous for the AT1R 5245 T allele (r = -0.56, P = 0.030), but not for other genotypes. CONCLUSIONS: There was an association between plasma concentrations of irbesartan and the blood pressure response for hypertensive patients with AT1R 5245 TT. Because of the small sample size, this study needs to be viewed as hypothesis generating. This is the first study, to our knowledge, indicating that the concentration-response relationship of an antihypertensive drug may be genotype dependent.     

Population-based case-control study of renin-angiotensin system genes polymorphisms and hypertension among Hispanics.

The effect of polymorphisms of the RAS genes on the incidence of hypertension seems to be population-dependent. We studied the effects of the angiotensinogen T174M and M235T, angiotensin converting enzyme insertion/deletion (ACE I/D), and angiotensin II receptor 1 (AT1R) A1166C gene polymorphisms on the risk of hypertension among Hispanics. We selected all cases (n=256) and 257 age and sex group-matched controls from a random sample of free living Colombians (n=2,989). Logistic regression was used to estimate the independent effect of each polymorphism. All polymorphisms were in Hardy-Weinberg equilibrium in controls, with the exception of M235T, which showed a small excess of heterozygotes (p=0.005; disequilibrium coefficient, D=-0.0264). After adjustment for age, sex, body mass index, race, physical activity, family history of hypertension and cardiovascular disease, and other polymorphisms, subjects with the ACE DD genotype were 1.56 times (95% confidence interval [CI]: 1.05, 2.33) more likely to be hypertensive than carriers of the I allele (p=0.03). Also, adjusted systolic and diastolic blood pressure were 4.58 (95% CI: -0.39, 9.56) and 3.32 (95% CI: 0.78, 5.86) mmHg higher in DD homozygous individuals than in carriers of the I allele, respectively. Approximately 15% of the cases of hypertension in this population could be attributed to carriage of the DD genotype. None of the other polymorphisms was associated with either hypertension or blood pressure level. In conclusion, the ACE DD genotype appears to be an independent risk factor for development of hypertension and may explain a significant fraction of incident cases among Hispanics.     

Effects of ACE I/D and AT1R-A1166C polymorphisms on blood pressure in a healthy normotensive primary care population: first results of the Hippocates study

BACKGROUND: Several studies have assessed the relationship between the angiotensin-converting enzyme (ACE) I/D or angiotensin II type 1 receptor (AT(1)R)-A C polymorphisms and blood pressure (BP). Since most data have been obtained in selected populations, the present study was performed in a healthy normotensive primary care population. OBJECTIVE: To investigate the individual effects of the aforementioned polymorphisms and their interaction on BP. METHODS: This cross-sectional study included 198 healthy subjects. Office BP was measured and polymorphisms were genotyped (polymerase chain reaction). Polymorphism interaction was tested using the following model: systolic blood pressure (SBP) (or diastolic blood pressure, DBP) = b(0)+ b(1)X + b(2)Y + b(3)XY, in which X and Y represent the polymorphisms' risk alleles. RESULTS: The ACE I/D polymorphism was associated with SBP (P = 0.002) and DBP (P = 0.004); highest pressures tracked with the DD genotype. Furthermore, in multiple linear regression analysis the ACE D allele was associated with SBP (P = 0.005) and DBP (P = 0.001), when adjusted for body mass index (BMI) and age. With respect to the AT(1)R-A C polymorphism, SBP was highest in the CC genotype (P = 0.025). In linear regression analysis the C allele was not associated with SBP. No synergistic effect of ACE D and AT(1)R C alleles on BP was found. Nevertheless, highest DBP tracked with the DDCC combination in comparison with other homozygous allele combinations (P = 0.030). CONCLUSIONS: This study confirmed an association of ACE I/D and AT(1)R-A C polymorphisms with BP in a healthy normotensive primary care population. Although synergistic effect of both polymorphisms on BP does not seem to be present, an additive effect on DBP is likely.     

老年高血压患者血管紧张素转换酶和醛固酮合酶基因多态性与肾素血管紧张素醛固酮的关系

目的分析老年高血压晨峰患者血管紧张素转换酶(ACE)基因I/D、醛固酮合酶(CYP11B2)基因-344C/T多态性与肾素-血管紧张素-醛固酮系统(RAAS)的相关性。方法选择2016年2月~2017年12月云南省第一人民医院老年病科门诊及住院的老年原发性高血压患者200例,根据清晨血压水平分为晨峰增高组58例和非晨峰增高组142例。分析2组患者ACE基因I/D、CYP11B2基因-344C/T多态性和血浆RAAS参数的差异。结果 2组ACE基因型和等位基因频率比较,差异有统计学意义(χ^2=38.020,P=0.000;χ^2=42.040,P=0.000)。2组CYP11B2基因型和等位基因频率比较,差异无统计学意义(χ^2=0.261,P=0.878;χ^2=0.198,P=0.656)。晨峰增高组DD+TC、DD+TT基因型比例明显高于非晨峰增高组,差异有统计学意义(22.4%vs 3.5%,12.1%vs 2.1%,P<0.01);晨峰增高组II+TT、II+TC基因型比例明显低于非晨峰增高组,差异有统计学意义(13.8%vs 29.6%,P<0.05;5.2%vs 22.5%,P<0.01)。晨峰增高组血浆肾素、血管紧张素Ⅱ和醛固酮水平明显高于非晨峰增高组,差异有统计学意义(P<0.05,P<0.01)。logistic回归分析显示,DD+CC、DD+TC、DD+TT、肾素、血管紧张素Ⅱ为血压晨峰的重要影响因素(OR=8.084,95%CI:1.261~51.832,P=0.027;OR=14.459,95%CI:3.804~54.964,P=0.000;OR=9.753,95%CI:2.255~42.181,P=0.002;OR=1.816,95%CI:1.258~2.620,P=0.001;OR=0.634,95%CI:0.437~0.921,P=0.017)。结论 ACE基因DD型、肾素、血管紧张素Ⅱ是血压晨峰形成的主要影响因素。     

Genetic variation in the renin-angiotensin system and autonomic nervous system function in young healthy Japanese subjects

CONTEXT: The renin-angiotensin system (RAS) interacts with the autonomic nervous system (ANS) in the regulation of blood pressure and cardiovascular function. Several genetic polymorphisms in the RAS have been identified and have been implicated as a cause of hypertension and cardiovascular disease. OBJECTIVE: The aim of the present study was to evaluate the relation between genetic polymorphisms of the RAS (M235T of AGT gene, insertion/deletion of ACE gene, A1166C of AT1R gene, and A1675G of AT2R gene) and ANS function. SUBJECTS: One hundred forty-nine young healthy Japanese males were genotyped for each RAS polymorphism. MAIN OUTCOME MEASURES: ANS function was evaluated by power spectral analysis of heart rate variability (HRV) during supine rest and in a standing position. RESULTS: In a supine position, subjects homozygous for the AGT 235T allele had a higher HRV sympathetic index than 235M allele carriers, whereas the orthostatic change in this index was relatively blunted in AGT 235TT carriers. In the analysis of gene-gene interaction, these effects of the AGT 235T homozygotes on HRV sympathetic index were more apparent in the presence of the ACE D allele. Meanwhile, the AT1R 1166C allele was significantly associated with higher HRV low-frequency power and sympathetic index in a standing position. These data suggest that the AGT M235T polymorphism is associated with sympathetic predominance at rest, and AT1R 1166C allele carriers have potentially increased sympathetic response. CONCLUSIONS: Cardiac autonomic function can be modulated by genetic variation in the RAS even in young and healthy states.     

Genetic influences on 24 h blood pressure profiles in a hypertensive population: role of the angiotensin-converting enzyme insertion/deletion and angiotensin II type 1 receptor A1166C gene polymorphisms

OBJECTIVE: Data on the association of the ACE I/D and AT1R AC polymorphisms with hypertension are conflicting. Most studies, however, have focused on office blood pressure (BP) only. The objective of the present study was to investigate the association of BP with the angiotensin-converting enzyme insertion/deletion (ACE I/D) and angiotensin II type 1 receptor AC (AT1R AC) polymorphisms by means of both office and ambulatory blood pressure monitoring (ABPM). METHODS AND RESULTS: A total of 348 hypertensive patients participated in this study. Office BP did not differ between the various ACE or AT1R genotype groups. However, ambulatory BP and BP load were positively associated with the ACE I/D polymorphism. This was more apparent in men than in women. There were no differences in heart rate, BP variability, and amount of dipping. The AT1R AC polymorphism showed no consistent association with blood pressure (load). CONCLUSION: From these data we conclude that frequent measuring of blood pressure by ABPM is crucial to find an association of the ACE D allele with various aspects of blood pressure.     

Associations of baseline blood pressure levels and efficacy of Benazepril treatment with interaction of alpha-adducin and ACE gene polymorphisms in hypertensives

The molecular mechanisms underlying essential hypertension are not fully elucidated. Although Benazepril is being widely used in antihypertensive medication, the agent is efficacious in only a portion of hypertensive patients. To evaluate the interaction of alpha-adducin gene Gly460Trp and angiotensin I-converting enzyme (ACE) gene I/D polymorphisms in regard to baseline blood pressure (BP) levels and the reductions of blood pressures after Benazepril treatment, we conducted an investigation of 954 Chinese hypertensive patients in Anhui province, China. We found that compared with the baseline systolic BP (SBP) of subjects with one ACE I allele and one alpha-adducin Trp allele, the baseline SBP of those with ACE DD and alpha-adducin Gly/Gly genotypes was significantly higher [Crude: beta(SE) = 7.83(3.09), p = .01; Adjusted: beta(SE) = 5.83(2.83), p = .04]. However, no associations were found between the interaction of ACE I/D and alpha-adducin Gly460Trp polymorphisms and the baseline diastolic BP or the BP response to Benazepril treatment. Our results suggested that the interaction effect of alpha-adducin Gly460Trp and ACE I/D polymorphisms might play a significant role in regulating baseline BP but not BP response to Benazepril.     

肾素-血管紧张素系统基因多态性与原发性高血压左心室肥厚关系的探讨

目的　探讨肾素 血管紧张素系统 (RAS)基因多态性与原发性高血压左心室肥厚 (EH LVH)的相关性以及在EH LVH产生中的多基因协同作用。方法　对 10 9例原发性高血压病 (EH)患者 ,采用聚合酶链反应 (PCR)以及聚合酶链反应 限制性片段长度多态性方法检测血液白细胞染色体DNA中血管紧张素转换酶 [ACE(I D) ]、血管紧张素原 [AGT(M2 35T) ]和血管紧张素Ⅱ 1型受体 [AT1 R(A116 6C) ]基因多态性 ;利用超声心动图检测左心室质量 (LVM)并计算左心室质量指数 (LVMI)。结果　ACE(I D)基因多态性D等位基因频率在EH LVH组中明显增高 (χ2 =4 .6 9,P=0 .0 30 ) ,男性EH患者中 ,ACE(I D)基因型构成比与LVH有关联 (χ2 =9.5 5 ,P =0 .0 0 8)。协同存在AGT TT型时 ,ACE(I D)基因多态性与EH LVH有关 (χ2 =6 .2 2 ,P =0 .0 4 4 ) ,且D等位基因在EH LVH明显增高 (χ2 =6 .91,P =0 .0 0 9) ,该类EH患者发生LVH的相对危险度增高 (OR :2 .5 0 ,95 %CI:1.2 5～ 5 .0 0 )。结论　ACE(I D)基因多态性D等位基因可能是LVH的独立危险因子。ACE基因多态性与AGT基因多态性之间的协同效应表明 ,同时携带AGT TT型时 ,具有ACE(I D)基因多态性D等位基因的EH患者更易发生LVH。