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烟台市新生儿先天性甲状腺功能低下症病因学分析研究 被引量:2

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摘要 目的通过对先天性甲状腺功能低下症(CH)患儿甲状腺核素扫描和血清学变化分析、对新生儿促甲状腺激素(TSH)升高与母亲孕期甲状腺功能状态变化的比较、对确诊CH患儿DUOX2基因测序筛查,探讨新生儿CH的病因分类。方法采集1998~2010年烟台市新生儿出生72h后血样滴于滤纸上,筛查试验采用时间分辨荧光标记法测定TSH含量,确诊试验采用化学发光法测定血清TSH、游离三碘甲腺原氨酸(FT3)、游离甲状腺素(FT4)浓度水平,利用放射性核素扫描确定甲状腺形态、位置。对确诊CH患儿的DUOX2基因全部外显子进行基因突变筛查,结合测序验证及生物信息学进行分析。结果 523462例新生儿中确诊CH372例,其中永久性CH216例,暂时性CH151例,高TSH血症5例。在372例CH中,只有218例同意做了甲状腺核素扫描,包括永久性CH162例,暂时性CH56例。甲状腺形态基本正常的CH血清TSH、FT3、FT4含量与甲状腺形态和功能异常者有统计学差异(P<0.01),新生儿血TSH升高与其母亲中孕期间甲状腺功能异常相关(P<0.01)。在确诊的CH患儿中,检测到2例甲状腺肿大患儿的DUOX2基因的外显子发生突变。第1例突变发生在DUOX2基因第三外显子(c.227C>T),第2例在第13外显子发生突变(c.1621C>A)。结论 CH患儿的甲状腺形态、位置改变不同,血清TSH、FT3、FT4表达水平不同;新生儿TSH升高与其母亲孕期甲状腺功能呈正相关;DUOX2基因突变可引起CH。此研究不仅有利于CH患者的早期诊断,而且有利于开展产前诊断,提高出生人口素质。
出处 《中华临床医师杂志(电子版)》 CAS 2011年第19期5779-5782,共4页 Chinese Journal of Clinicians(Electronic Edition)
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参考文献10

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