皮质类固醇结合型环球蛋白功能障碍由于儿科患者的同卵性SERPINA6里昂变异
Mary R Jiang1,2,3, Caroline Zuijdwijk1,2,3, Melissa T Carter4,2,3
1Department of Pediatrics, Division of Endocrinology and Metabolism, Children's Hospital of Eastern Ontario, Ottawa, ON K1H 8L1, Canada.
JCEM case reports
|May 14, 2025
概括
皮质类固醇结合球蛋白 (CBG) 缺乏,是一种罕见的疾病,可以模仿儿童的上腺功能不全. 基因测试在一个有症状的患者中发现了特定的变异,而携带相同变异的兄弟姐妹则无症状.
科学领域:
- 内分泌学 在内分泌学.
- 遗传学 遗传学 是一个
- 儿科 儿科 儿科
背景情况:
- 皮质类固醇结合球蛋白 (CBG) 缺乏症是一种罕见的疾病.
- 它的病理生理学和临床表现尚不清楚.
- CBG 在皮质醇调节中起作用.
研究的目的:
- 报告一例儿童CBG缺乏症的病例.
- 为了调查疾病的遗传基础.
- 突出诊断挑战和上腺功能不全的影响.
主要方法:
- 临床病例的介绍.
- 上腺功能测试 (ACTH刺激测试).
- 测量唾液 (自由) 皮质醇.
- 对SERPINA6变种进行遗传测试.
主要成果:
- 一名儿科患者呈现出生长不良和延迟的青春期,最初被诊断为原发性上腺功能不充分.
- 失败的ACTH测试显示CBG正常,但刺激的唾液皮质醇低.
- 基因检测显示了一个同卵性SERPINA6 (CBG Lyon) 变种.
- 两个无症状的兄弟姐妹携带相同的同卵同胞变异与正常刺激的唾液皮质醇.
结论:
- 在无法解释的上腺功能不充分的情况下,特别是在儿科病例中,应考虑CBG缺乏.
- 即使在家庭内,这种可变的表现也强调了CBG功能障碍的复杂性.
- 需要进一步的研究来阐明CBG在皮质醇生理学中的确切作用及其临床影响.
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