Association between Myeloperoxidase-463G/A Gene Polymorphism and Essential Hypertension in Yi Nationality
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摘要:
目的 研究髓过氧化物酶(MPO)-463G/A基因的多态性与云南彝族原发性高血压(EH)的相关性。 方法 应用聚合酶链反应-限制性片段长度多态性(PCR-RELP)技术,检测2007年1月至2008年11月由昆明医科大学第一附属医院采自云南省双河乡彝族高血压患者(EH组,n = 86)和彝族正常人(对照组,n = 100)的MPO-463G/A基因多态性,并计算GG、GA、AA基因型频率及G、A基因频率,再进行关联分析。 结果 在EH组和对照组中,MPO基因-463G/A 多态的基因型频率GG为66.28%、52.00%,GA+AA为33.72%、48.00%,等位基因G频率为79.65%、69.50%,等位基因A频率为20.35%、30.50%,2组基因型频率和基因频率分别相比,差异均具有统计学意义(P < 0.05)。彝族女性EH组和女性对照组中GG和GA+AA基因型频率分别为74.50%、49.30%和25.50%、50.70%,等位基因G和A的频率分别为85.50%、69.00%和14.50%、31.00%,2组基因型频率和基因频率分别相比,差异均具有统计学意义(P <0.05),EH组A基因频率明显低于对照组。彝族男性 EH 组和男性对照组的基因型频率和基因频率分别比较,差异均无统计学意义(P > 0.05)。 结论 MPO基因-463G/A 多态与云南彝族女性原发性高血压具有相关性,是彝族女性高血压的易感基因。该位点A基因的表达在彝族女性EH的发生过程中起保护性作用。 Abstract:Objective To study the correlation between the polymorphism of myeloperoxidase-463G/A gene and essential hypertension of Yi nationality in Yunnan Province. Methods The PCR-RFLP technique was used to detect the MPO-463G/A gene polymorphism in 86 Yi hypertensive patients and 100 normal Yi people in Shuanghe Township and Yunnan Province collected by the First Affiliated Hospital of Kunming Medical University from January 2007 to November 2008. The frequencies of the GG, GA, and AA genotypes and the G and A allele frequencies were calculated, followed by association analysis. Results The genotype frequencies of MPO gene-463G/A polymorphism in EH group and control group GG were 66.28%, 52.00%, GA+AA were 33.72%, 48.00%, respectively. The frequencies of allele G were 79.65% and 69.50%, and the frequencies of allele A were 20.35% and 30.50%, respectively. There were statistically significant differences in genotype frequency and gene frequency between the two groups(P < 0.05). The genotype frequencies of GG and GA+AA were 74.50% and 49.30% in female EH group and 25.50% and 50.70% in femal control group. The allele frequencies of G and A were 85.50% and 69.00% in EH group and 14.50% and 31.00% in control group. The differences were statistically significant(P < 0.05). The frequency of A gene in female EH group was significantly lower than that in female control group. There was no significant difference in genotype frequency and gene frequency between EH group and control group in Yi male(P > 0.05). Conclusion MPO gene-463G/A polymorphism is related to essential hypertension in Yunnan Yi women and is a susceptibility gene for hypertension in Yi women. The expression of the A allele at this locus has a protective effect during the development of EH in Yi women. -
Key words:
- Myeloperoxidase /
- Essential hypertension /
- The Yi nationality /
- Gene polymorphism
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表 1 EH组和对照组一般临床资料比较($\bar x \pm s$)
Table 1. Comparison of the general clinical data between EH and control group ($\bar x \pm s$)
组别 n 年龄(岁) 男∶女(n) EH组 86 55.92 ± 13.58 31∶55 对照组 100 51.84 ± 15.04 29∶71 t/χ2 −1.928 1.051 P 0.055 0.305 表 2 云南省彝族人群中MPO基因−463G/A 位点的基因型及等位基因频率比较[n(%)]
Table 2. Comparison of genotype and allele frequency of MPO gene−463G/A locus in Yi people of Yunnan Province[n(%)]
组别 基因型 等位基因 n GG GA+AA n G A EH组 86 57(66.28) 29(33.72) 172 137(79.65) 35(20.35) 对照组 100 52(52.00) 48(48.00) 200 139(69.50) 61( 30.50) 总计 186 109(58.60) 77( 41.40) 372 276(74.19) 96(25.81) χ2 3.866 4.977 P 0.049* 0.026* *P < 0.05。 表 3 男、女性EH组与对照组基因型分布和等位基因比较[n(%)]
Table 3. Comparison of genotype distribution and alleles between male and female EH groups and control group[n(%)]
组别 基因型 等位基因 n GG GA+AA n G A 男性 EH组 31 16(51.60) 15(48.40) 62 43(69.40) 19(30.60) 对照组 29 17(58.60) 12(41.40) 58 41(70.70) 17(29.30) 总计 60 33(55.00) 27(45.00) 120 84(70.00) 36(30.00) χ2 0.297 0.025 P 0.586 0.873 女性 EH组 55 41(74.50) 14(25.50) 110 94(85.50) 16(14.50) 对照组 71 35(49.30) 36(50.70) 142 98(69.00) 44(31.00) 总计 126 76(60.32) 50(39.68) 252 192(76.19) 60(23.81) χ2 8.255 9.235 P 0.004* 0.002* *P < 0.05。 -
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