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17β-羟类固醇脱氢酶3型缺乏症2例并文献复习 被引量:3

Two cases of 17β- hydroxysteroid dehydrogenase 3 deficiency and literature review
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摘要 目的 分析17β-羟类固醇脱氢酶3型(17β-HSD3)缺乏症患儿的临床特点和基因检测结果.方法 对2014年2月至2015年9月在首都医科大学附属北京儿童医院内分泌遗传代谢科门诊就诊的2例17β-HSD3缺乏症患儿的临床表现、激素水平检测结果及基因突变检测结果进行分析总结,并对相关文献进行复习.结果 2例学龄前患儿均以双侧腹股沟肿物就诊,表现为外生殖器模糊,B超显示为双侧的睾丸组织,未见子宫及卵巢;染色体核型为46,XY.例1基础睾酮(T) <50 ng/L,促皮质素(ACTH)、皮质醇(Cor)及电解质正常;人绒毛膜促性腺激素(HCG)激发试验后T为2 000 ng/L.例2基础T<200 ng/L,ACTH、Cor、电解质正常;HCG激发试验后T为743 ng/L,雄烯二酮(△4)1.27 μg/L,HCG激发试验后T/△4为0.58.例1最初诊断为雄激素不敏感综合征.2例患儿HSD17B3基因均为复合杂合突变;例1为c.242C>T,Thr81 Met和c.172G>T,Asp58Tyr,这2个位点致病性尚未见文献报道;例2为c.645A>C,Glu215 Asp和c.239G>A,Arg80Gln,这2个位点均有致病性.结论 17β-HSD3缺乏症学龄前患儿无特异临床表现,鉴别诊断困难,HCG激发试验后T/△4 <0.8可以帮助诊断,基因检测可迸一步确诊.
作者 宋艳宁 陈佳佳 巩纯秀 Song Yanning, Chen Jia-jia , Gong Chunxiu(Department of Endocrinology, Genetics and Metabolism , Beijing Children's Hospital, Capital Medical University, The National Center for Children's Health,Beijing 100045,Chin)
出处 《中华实用儿科临床杂志》 CSCD 北大核心 2018年第8期618-620,共3页 Chinese Journal of Applied Clinical Pediatrics
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