部分甲状腺激素结合型球蛋白缺乏症:一个病例报告和文献综述
Xuefang Liu1, Suyan Li1, Jingni Xiong1
1Department of Endocrine Medicine, The Fourth Affiliated Hospital of Guangzhou Medical University, Guangzhou, People's Republic of China.
概括
甲状腺激素结合球蛋白 (TBG) 缺乏,是一种罕见的遗传疾病,呈现低甲状腺激素水平,但甲状腺功能正常. 一个特定的Serpina7基因突变,从父亲遗传,在一个患有这种疾病的患者中被确定.
科学领域:
- 内分泌学 在内分泌学.
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
背景情况:
- 甲状腺素结合球蛋白 (TBG) 缺乏症是一种罕见的遗传性内分泌疾病.
- 它主要是由遗传突变引起的,通常与X链接的递归遗传模式有关.
- 了解TBG缺乏对于准确评估甲状腺功能至关重要.
研究的目的:
- 总结TBG缺乏症儿童及其家属的临床特征.
- 在TBG缺乏症中分析Serpina7基因突变.
- 为区分TBG缺陷提供参考.
主要方法:
- 甲状腺功能测试在TBG缺乏的患者身上进行.
- 基因分析涉及聚合酶链反应 (PCR) 和Serpina7基因的直接DNA测序.
- 通过使用与TBG,基因和突变相关的关键词进行文献搜索.
主要成果:
- 患者表现出低的TBG,三甲状腺素 (T3) 和甲状腺素 (T4) 水平,正常的甲状腺素 (TSH),自由T3 (FT3) 和自由T4 (FT4),表明部分TBG缺乏.
- 在患者和父亲身上发现了Serpina7基因的第4个外显突变 (C.909 g > T).
- 文献审查确定了45项研究,详细介绍了49种Serpina7基因变异,主要是在外基因中.
结论:
- 鉴定出的Serpina7 C.909G (P.L303F) 突变是以X链的递归方式遗传的.
- 结核糖缺乏的主要临床特征包括低血清T4,T3和结核糖水平与正常的TSH,FT3和FT4,通常没有明显的临床症状.
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