Screening of double oxide enzyme mutations in patients with congenital hypothyroidism.

doi:10.11852/zgetbjzz2016-24-08-04

journal1 ›› 2016, Vol. 24 ›› Issue (8): 795-799.DOI: 10.11852/zgetbjzz2016-24-08-04

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Screening of double oxide enzyme mutations in patients with congenital hypothyroidism.

HAN Wen-xiu¹,ZANG Hong-wei¹,ZANG Yu-cui²,YI Ming-ji³,YAN Sheng-li⁴,LIU Shi-guo²,GE Yin-lin¹.

1 Department of Biochemistry and Molecular Biology,Medical School of Qingdao University,Qingdao,Shandong 266021,China;
2 Prenatal Diagnosis Center,the Affiliated Hospital of Qingdao University,Qingdao,Shandong 266003,China;
3 Department of Child Health Care;
the Affiliated Hospital of Qingdao University,Qingdao,Shandong 266003,China;
4 Department of Endocrinology;
the Affiliated Hospital of Qingdao University,Qingdao,Shandong 266003,China

Received:2016-02-24 Online:2016-08-10 Published:2016-08-10
Contact: GE Yin-lin,E-mail:geyinlin@126.com

先天性甲状腺功能减退症患儿双氧化酶1基因突变研究

韩文秀¹,臧红伟¹,臧玉翠²,衣明纪³,阎胜利⁴,刘世国²,葛银林¹

1 青岛大学医学院生物化学与分子生物学教研室,山东青岛 266021;
2 青岛大学附属医院产前诊断中心,山东青岛 266003;
3 青岛大学附属医院儿童保健科,山东青岛 266003;
4 青岛大学附属医院内分泌科,山东青岛 266003

通讯作者: 葛银林,E-mail:geyinlin@126.com
作者简介:韩文秀(1990-),女,山东人,硕士研究生在读,主要研究方向为遗传学。
基金资助:
国家自然科学基金(81170812,81470044);山东省人口和计划生育委员会科技计划项目(2013-5)

Abstract

Abstract: Objective To study the types and characteristics of double oxide enzyme (DUOX1) mutation in patients with congenital hypothyroidism (CH) and thyroid goiter from Shandong province,and provide theoretical basis for the diagnosis and treatment of CH. Methods Totally 100 healthy individuals and 43 cases of patients who were diagnosed as congenital hypothyroidism (CH) were extracted their genomic DNA from peripheral blood and thyroid goiter in neonatal screening in Shandong Province.All the exons of DUOX1 were amplified by polymerase chain reaction (PCR) and direct sequencing (Sanger sequencing),DUOX1 gene was analysed whether there was mutation combining with the results of DNA sequencing and bioinformatics analysis,and χ² test was used. Results No DUOX1 gene mutation was found in 43 cases of CH with thyroid goiter patients and 100 healthy individuals enrolled according to the sequencing results and bioinformatics analysis,however,two SNPs were found (rs16939752,c.3076T>C; rs1706804,c.3228A>G) in exon region,the former was a missense mutation (Cys→Arg),the latter was a synonymous mutation (Thr→Thr); one SNP was found (rs2020216,IVS8+129C>T) in intron region.There was no significant difference between the SNP rate in CH patients and controls(P>0.05). Conclusion The DUOX1 gene mutation rate is very low which may not be the main factor leading to the congenital hypothyroidism with thyroid goiter in Shandong province,China.

Key words: congenital hypothyroidism, thyroid goiter, double oxide enzyme, mutation

摘要： 目的研究山东地区先天性甲状腺功能减退症(CH)伴甲状腺肿大患儿双氧化酶1(DUOX1)基因突变类型及特点,为CH的诊断及基因治疗提供理论依据。方法选取43例经新生儿筛查确诊为CH伴甲状腺肿大患儿及100例正常对照新生儿,提取CH患儿及正常新生儿外周血基因组DNA,采用聚合酶链式反应(PCR)扩增及一代测序法(Sanger测序法),对DUOX1基因全部外显子进行基因突变检测,结合测序结果及生物信息学数据,分析DUOX1基因是否存在突变,并对发现的单核苷酸多态性(SNP)位点的基因频率进行χ²检验。结果在43例CH伴甲状腺肿大患儿及100例正常对照新生儿中,均未发现DUOX1基因突变。但在外显子区发现了2个SNP位点(rs16939752,c.3076T>C;rs1706804,c.3228A>G),前者为错义突变(Cys→ Arg),后者为同义突变(Thr→Thr);内含子区发现了1个SNP位点(rs2020216,IVS8+129C>T)。经统计,本文实验组患儿与正常对照组新生儿SNP的基因频率比较,差异无统计学意义(P> 0.05)。结论山东地区CH伴甲状腺肿大患儿中,DUOX1基因突变率低,可能不是该地区CH伴甲状腺肿大的主要病因。

关键词: 先天性甲状腺功能减退, 甲状腺肿大, 双氧化酶1, 突变

CLC Number:

:R179

HAN Wen-xiu,ZANG Hong-wei,ZANG Yu-cui,YI Ming-ji,YAN Sheng-li,LIU Shi-guo,GE Yin-lin.. Screening of double oxide enzyme mutations in patients with congenital hypothyroidism.[J]. journal1, 2016, 24(8): 795-799.

韩文秀,臧红伟,臧玉翠,衣明纪,阎胜利,刘世国,葛银林. 先天性甲状腺功能减退症患儿双氧化酶1基因突变研究[J]. 中国儿童保健杂志, 2016, 24(8): 795-799.

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Screening of double oxide enzyme mutations in patients with congenital hypothyroidism.

先天性甲状腺功能减退症患儿双氧化酶1基因突变研究

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