Baroreflex sensitivity and variants of the renin angiotensin system genes.

Baroreflex sensitivity and variants of the renin angiotensin system genes.
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压力反射敏感性和肾素血管紧张素系统基因的变异。

DOI:
10.1016/s0735-1097(99)00506-9
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发表时间:
2000
影响因子:
24
通讯作者:
Huikuri,HV
Huikuri,HV
中科院分区:
医学1区
文献类型:
--
作者:
Ylitalo,A;Airaksinen,KE;Hautanen,A;Kupari,M;Carson,M;Virolainen,J;Savolainen,M;Kauma,H;Kesäniemi,YA;White,PC;Huikuri,HV

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由于肾素-血管紧张素-醛固酮系统(RAS)改变心血管自主调节,我们研究了压力反射敏感性(BRS)和RAS基因多态性之间的可能联系。背景BRS的受试者间差异不能很好地用心血管危险因素或生活方式解释,提示BRS变异的遗传因素。方法从Valsalva动作的过冲阶段测得的压力反射敏感性在年龄为41 - 61岁的161名女性和154名男性的随机样本中,然后在年龄为36 - 37岁的29名男性和37名女性的独立随机队列中检测了遗传多态性。通过聚合酶链反应鉴定了血管紧张素转换酶(ACE)的插入/缺失(I/D)多态性、血管紧张素原(AGT)的M235 T变体和编码醛固酮合成酶(CYP 11 B2)的基因中的两个双等位基因多态性,一个在启动子(− 344 C/T)中,另一个在第二内含子中。在女性中,不同CYP 11B 2基因型组的BRS差异显著(-344 TT、CT和CC基因型分别为10.1 ± 4.5、8.7 ± 3.8和7.1 ± 3.2 ms·mm Hg− 1,p = 0.003和11.1 ± 4.4,内含子2基因型1/1、1/2和2/2分别为8.9 ± 4.1和7.5 ± 3.4 ms·mm Hg-1,p = 0.002),但男性中没有。没有发现BRS与ACE的I/D多态性或AGT的M235 T变体有可比性的关联。在年轻人群中,BRS与CYP 11B 2启动子基因型的相关性更强(p = 0.0003)。在男性(p = 0.015)和女性(p = 0.03)中,这种关联具有统计学意义。结论醛固酮合成酶(CYP 11 B2)基因的常见遗传多态性与BRS的个体间变异相关。
OBJECTIVESBecause the renin-angiotensin-aldosterone system (RAS) modifies cardiovascular autonomic regulation, we studied the possible associations between baroreflex sensitivity (BRS) and polymorphism in the RAS genes.BACKGROUNDWide intersubject variability in BRS is not well explained by cardiovascular risk factors or life style, suggesting a genetic component responsible for the variation of BRS.METHODSBaroreflex sensitivity as measured from the overshoot phase of the Valsalva maneuver and genetic polymorphisms were examined in a random sample of 161 women and 154 men aged 41 to 61 years and then in an independent random cohort of 29 men and 37 women aged 36 to 37 years. An insertion/deletion (I/D) polymorphism of angiotensin-converting enzyme (ACE), M235T variants of angiotensinogen (AGT) and two diallelic polymorphisms in the gene encoding aldosterone synthase (CYP11B2), one in the promoter (−344C/T) and the other in the second intron, were identified by polymerase chain reaction.RESULTSIn the older population, BRS differed significantly across CYP11B2 genotype groups in women (10.1 ± 4.5, 8.7 ± 3.8 and 7.1 ± 3.2 ms·mm Hg−1in genotypes −344TT, CT and CC, respectively, p = 0.003 and 11.1 ± 4.4, 8.9 ± 4.1 and 7.5 ± 3.4 ms·mm Hg−1in intron 2 genotypes 1/1, 1/2 and 2/2, respectively, p = 0.002), but not in men. No comparable associations were found for BRS with the I/D polymorphism of ACE or the M235T variant of AGT. In the younger population, BRS was even more strongly related to the CYP11B2 promoter genotype (p = 0.0003). The association was statistically significant both in men (p = 0.015) and in women (p = 0.03).CONCLUSIONSCommon genetic polymorphisms in the aldosterone synthase (CYP11B2) gene is associated with interindividual variation in BRS.
DOI: 10.1161/01.cir.97.6.569
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DOI: --
发表时间: 1988
影响因子: 10.8
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DOI: --
发表时间: 1997
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发表时间: 1996-12-01
期刊: HYPERTENSION
影响因子: 8.3
作者:
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DOI: --
发表时间: 1994
影响因子: 39.3
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