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Title: [Association between GSTP1 gave polymorphisms and susceptibility to noise-induced hearing loss].
Author: Li YH, Gu GZ, Zhou WH, Wu H, Chen GS, Zhang HL, Zheng YX, Yu SF.
Journal: Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi; 2020 Feb 20; 38(2):120-124. PubMed ID: 32306675.
Abstract:
Objective: To investigate the association between the single nucleotide polymorphisms (SNPS) at rs1695 and rs6591256 in glutathione S-transferase P1 (GSTP1) gene and susceptibility to noise-induced hearing loss in Chinese Han workers exposed to noise. Methods: A 1: 2 matched nested case-control study was performed, which based on the cohort of 6297 workers exposed to noise in an iron and steel plant in Henan, China, who were followed up from January 1, 2006 to December 31, 2015. According to the criteria of binaural average high-frequency hearing threshold ≥40 dB, a total of 292 workers were enrolled as hearing loss group; after the adjustment for sex, type of work, age (difference≤5 years) , and working years of noise exposure (difference≤2 years) , according to the criteria of binaural average high-frequency hearing threshold <35 dB, and the speech frequency hearing threshold of any ear at any frequency band ≤25 dB, a total of 584 workers were enrolled as control group. The single nucleotide polymorphisms (SNPs) of rs1695 and rs6591256 in GSTP1 were genotyped by high throughput SNP genotyping assay. Hardy-Weinberg equilibrium of control group was checked. The association between the SNPs at the two loci and susceptibility to NIHL was analyzed. Results: The L(Aeq, 8 h) range of workers exposed to noise was 80.2-98.8 dB (A) . The risk of NIHL in individuals with allele G of rs1695 was 1.291 times of those with allele A (95%CI: 1.042-1.598, P<0.05) . The risk of NIHL in individuals with allele G of rs6591256 was 1.390 times of those with allele A (95%CI: 1.119-1.728, P<0.05) . The risk of NIHL in individuals with AG and GG genotypes of rs6591256 was 1.437 times of those with AA genotype (95%CI: 1.057-1.952, P<0.05) . With the increase of noise exposure duration, individuals with AG and GG genotypes of rs6591256 had a higher risk of NIHL than those with AA genotype (HR=1.273, 95%CI: 1.002-1.616, P<0.05) . Conclusion: The allele G of rs1695 and rs6591256 may be risk factors of NIHL. 目的： 探讨噪声作业工人谷胱甘肽硫转移酶（glutathione S-transferase，GST）P1基因的rs1695和rs6591256位点单核苷酸多态性（single nucleotide polymorphism，SNP）与噪声性听力损失（noise-induced hearing loss，NIHL）易感性的关系。 方法： 于2019年7月，采用1：2匹配的巢式病例对照研究方法，选择某钢铁厂于2006年1月1日至2015年12月31日完成随访并完成两次以上健康检查和听力测定的6 297名接触噪声作业工人为队列研究的源人群，在该队列中筛选纯音听力测试双耳高频平均听阈≥40 dB者292例作为听力损失组；并按照同性别、同工种、年龄相差<5岁，接触噪声工龄相差≤2年的标准匹配，选择纯音听力测试双耳高频平均听阈<35 dB，且任一耳语频的任一频段听阈均≤25 dB，584例作为对照组。采用高通量SNP分型检测技术（SNPscan(TM)）法检测GSTP1基因的rs1695和rs6591256位点的多态性，检验对照组人群的哈迪一温伯格平衡（Hardy-Weinberg equilibrium）。应用logistic回归方法探讨基因单个位点SNP与NIHL易感性的关系。 结果： 各工种接触噪声的L(Aeq，8 h)范围为80.2~98.8 dB（A）。rs1695位点携带G等位基因的个体发生NIHL的风险是携带A等位基因的1.291倍（95%CI：1.042~1.598，P<0.05），rs6591256位点携带G等位基因的个体发生NIHL的风险是携带A等位基因的1.390倍（95%CI：1.119~1.728，P<0.05），携带AG+GG基因型的个体发生NIHL的风险是携带AA基因型个体的1.437倍（95%CI：1.057~1.952，P<0.05）。随着接噪工龄的延长，与rs6591256位点携带AA基因型个体比较，携带AG+GG基因型的个体患NIHL的风险高（HR=1.273，95%CI：1.002~1.616，P<0.05）。 结论： GSTP1基因rs1695和rs6591256位点的等位基因G可能是发生NIHL的危险因素。.

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