AT_1R基因1166位点多态性与高血压患者左室肥厚关系研究  被引量:3

Study of the relationship between the AT_1 receptor gene polymorphism and left ventricular hypertrophy in hypertension patients

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作  者:林欣[1] 江时森[1] 曹文[2] 

机构地区:[1]南京军区南京总医院心内科,江苏南京210002 [2]南京军区南京总医院药理科,江苏南京210002

出  处:《现代医学》2007年第2期79-82,共4页Modern Medical Journal

基  金:国家自然科学基金资助项目(39970863)

摘  要:目的探讨血管紧张素Ⅱ-1型受体(AT1R)基因A1166/C多态性与高血压患者左室肥厚之间的关系,以期从分子水平研究高血压患者左室肥厚发生的一般规律。方法64例轻中度原发性高血压患者住院期间应用聚合酶链反应限制性片段长度多态性(PCR-RFLP)方法检测AT1R基因型,同时应用HP SONOS 5500彩色多谱勒显像仪测定主动脉内径(ADD)、室间隔厚度(IVST)、左室内径(LVDD)、左房内径(LAD)、左室后壁厚度(LVPWT)、二尖瓣前叶舒张早期下降速度(EF斜率),然后计算左室重量和左室重量指数(LVM I)。结果CC基因型因其突变率极低,本次实验未发现,故未予分组。本组原发性高血压患者AC基因型频率为23.4%,C等位基因频率为11.7%。AC基因型患者ADD[(33.67±3.21)mm]较AA型者[(30.18±3.82)mm]宽,两者之间差异有统计学意义(P<0.01)。AC型患者LVDD、LVPWT、LVM I均较AA型者小,差异有统计学意义[分别为(46.61±3.79)mmvs(49.65±9.06)mm,(8.08±0.40)mmvs(8.40±0.89)mm,(95.82±16.51)g.m-2vs(114.54±34.95)g.m-2,均P<0.05];AC型患者EF斜率(71.88±12.70)较AA型者(60.68±16.60)大,两者之间差异有统计学意义(P<0.05);两基因型间IVST、LAD差异无统计学意义[分别为(8.51±0.64)mmvs(8.47±1.03)mm,(30.61±2.70)mmvs(30.23±5.20)mm,均P>0.05]。结论AT1R基因为AC型的原发性高血压患者左室肥厚的程度可能较AA型者轻,A1166/C多态性可能与高血压患者左室肥厚程度有关。Objective To investigate the relationship ventricular hypertrophy in hypertension patients. Methods between the AT1 receptor The AT1 receptor gene gene polymorphism and left type of 64 patients of mildmoderate essential hypertension was detected by polymerase chain reaction-restriction fragment length polymorphism( PCR-RFLP). Aorta dimension (AD), interventricular septal thickness (IVST), left ventricular diastolic dimension( LVDD), left atria dimension (LAD), left ventricular posterior wall thickness (LVPWT), ejection fraction( EF)were determined,and left ventricular weight and left ventricular mass index(IVMI) were calculated. Results The frequency of AC gene type in these essential hypertension patients and the C1166 allete of AT1 receptor gene was 23. 4% and 11. 7%. There was obvious difference on LADD, LVPWT and LVMI [ (46.61 ±3.79) mm vs(49.65 ±9.06) mm,(8.08 ±0.40) mm vs(8.40±0.89) mm,(95.82 ± 16.51) g·m^-2vs( 114.54 ± 34.95 )g·m^-2, all P 〈0.05 ] between AC and AA gene type. There was obvious difference on ADD and EF[ (33.67 ±3.21) mm vs(30.18 ±3.82) mm,(71.88± 12.70) vs(60.68 ±16.60),P〈0. 01 or P 〈 0. 05 ] between AC and AA gene groups. There was no obvious difference on IVST and LAD [ ( 8.51 ± 0.64) mm vs (8.47 ± 1.03 ) mm, (30.61 ±2.70) mm vs (30.23 ± 5.20 ) mm, all P 〉 0.05 ) between AC and AA gene type. Conclusion A1166/C gene polymorphism may be associated with the degree of left ventricular hypertrophy of essential hypertesion. The degree of left ventricular hypertrophy of AC gene type is lower than that of AA.

关 键 词:原发性高血压 血管紧张素Ⅱ-1型受体 基因多态性 左室肥厚 

分 类 号:R544.1[医药卫生—心血管疾病]

 

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