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Genetic Variants of Cytochrome CYP2D6 in Two Mixed Chilean Populations.
Human Heredity ( IF 1.1 ) Pub Date : 2017-07-21 , DOI: 10.1159/000478047
Mónica Acuña 1 , Eric Pinto , Paulina Olivares , Carolina Ríos
Affiliation  

OBJECTIVES It is known that the interindividual and interethnic variability of the genetic polymorphisms of CYP2D6 plays an important role in the presentation of adverse drug reactions and concerning lack of therapeutic effects in humans. However, there are few data available from mixed populations of Latin America, including the Chilean. The aim of this study was therefore to estimate the frequencies of CYP2D6 variants in two samples of hospitals from the northern (Hospital San José, HSJ) and eastern (Clínica Las Condes, CLC) parts of Santiago, Chile, with different degrees of Amerindian admixture (HSJ: 34.5%; CLC: 15.9%). METHODS We used polymerase chain reaction followed by restriction endonuclease digestion (PCR-RFLP) to genotype 7 CYP2D6 alleles in 250 healthy unrelated individuals of Chilean Mestizo background. The detection of allele CYP2D6*5 and the duplication of this gene was performed by long-PCR. RESULTS The degrees of Amerindian admixture are reflected in the observed frequencies of the CYP2D6*1 (HSJ: 58.26%; CLC: 41.06%), CYP2D6*2 (HSJ: 28.10%; CLC: 40.65%), and CYP2D6*4 (HSJ: 8.26%; CLC: 12.60%) alleles; the frequencies of CYP2D6*1 (p = 0.0002) and CYP2D6*2 (p = 0.0036) are significantly different between the samples. Four individuals (CLC: 0.41%; HSJ: 1.24%) could not be assigned to a genotype. We identified 3.25% of the genotypes which predict a poor metabolizer phenotype in CLC and 1.65% in HSJ. CONCLUSION Our data indicate ethnic group-dependent genetic differences in the vulnerability to treatment with the large variety of drugs metabolized by the enzyme CYP2D6.

中文翻译:

两种智利混合种群中细胞色素CYP2D6的遗传变异。

目的已知CYP2D6基因多态性的个体间和种族间变异在药物不良反应的表现和对人类缺乏治疗作用中起重要作用。但是,几乎没有来自包括智利人在内的拉丁美洲混合人口的数据。因此,本研究的目的是评估智利圣地亚哥北部(圣何塞医院,HSJ医院)和东部圣地亚哥(ClínicaLas Condes医院,CLC)两个医院样本中不同程度的美洲印第安人混合物中CYP2D6变异的频率。 (HSJ:34.5%; CLC:15.9%)。方法我们采用聚合酶链反应,随后进行限制性内切酶消化(PCR-RFLP),对智利Mestizo背景的250名健康无关个体中的7型CYP2D6等位基因进行了基因型分析。通过长PCR进行等位基因CYP2D6 * 5的检测和该基因的重复。结果美洲印第安人混合物的程度反映在CYP2D6 * 1(HSJ:58.26%; CLC:41.06%),CYP2D6 * 2(HSJ:28.10%; CLC:40.65%)和CYP2D6 * 4(HSJ)的观测频率中:8.26%; CLC:12.60%)等位基因;样品中CYP2D6 * 1(p = 0.0002)和CYP2D6 * 2(p = 0.0036)的频率显着不同。无法将四个个体(CLC:0.41%; HSJ:1.24%)分配给基因型。我们鉴定出3.25%的基因型可预测CLC中较差的代谢物表型,而在HSJ中则为1.65%。结论我们的数据表明族裔相关的遗传差异在通过酶CYP2D6代谢的多种药物的治疗易感性中。结果美洲印第安人混合物的程度反映在CYP2D6 * 1(HSJ:58.26%; CLC:41.06%),CYP2D6 * 2(HSJ:28.10%; CLC:40.65%)和CYP2D6 * 4(HSJ)的观测频率中:8.26%; CLC:12.60%)等位基因;样品中CYP2D6 * 1(p = 0.0002)和CYP2D6 * 2(p = 0.0036)的频率显着不同。无法将四个个体(CLC:0.41%; HSJ:1.24%)分配给基因型。我们鉴定出3.25%的基因型可预测CLC中较差的代谢物表型,而在HSJ中则为1.65%。结论我们的数据表明族裔相关的遗传差异在通过酶CYP2D6代谢的多种药物的治疗易感性中。结果美洲印第安人混合物的程度反映在CYP2D6 * 1(HSJ:58.26%; CLC:41.06%),CYP2D6 * 2(HSJ:28.10%; CLC:40.65%)和CYP2D6 * 4(HSJ)的观测频率中:8.26%; CLC:12.60%)等位基因;样品中CYP2D6 * 1(p = 0.0002)和CYP2D6 * 2(p = 0.0036)的频率显着不同。无法将四个个体(CLC:0.41%; HSJ:1.24%)分配给基因型。我们鉴定出3.25%的基因型可预测CLC中较差的代谢物表型,而在HSJ中则为1.65%。结论我们的数据表明族裔相关的遗传差异在通过酶CYP2D6代谢的多种药物治疗的易感性中。8.26%; CLC:12.60%)等位基因;样品中CYP2D6 * 1(p = 0.0002)和CYP2D6 * 2(p = 0.0036)的频率显着不同。无法将四个个体(CLC:0.41%; HSJ:1.24%)分配给基因型。我们鉴定出3.25%的基因型可预测CLC中较差的代谢物表型,而在HSJ中则为1.65%。结论我们的数据表明族裔相关的遗传差异在通过酶CYP2D6代谢的多种药物的治疗易感性中。8.26%; CLC:12.60%)等位基因;样品中CYP2D6 * 1(p = 0.0002)和CYP2D6 * 2(p = 0.0036)的频率显着不同。无法将四个个体(CLC:0.41%; HSJ:1.24%)分配给基因型。我们鉴定出3.25%的基因型可预测CLC中较差的代谢物表型,而在HSJ中则为1.65%。结论我们的数据表明族裔相关的遗传差异在通过酶CYP2D6代谢的多种药物的治疗易感性中。
更新日期:2019-11-01
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