没有 OTC 缺乏症的无症状携带者总是无症状吗? 使用UCDC纵向研究数据库对风险进行多中心的回顾性研究
Kuntal Sen1, Rima Izem2,3, Yuelin Long4
1Division of Neurogenetics and Neurodevelopmental Pediatrics, Children's National Hospital, The George Washington School of Medicine, Washington, DC, USA.
Molecular genetics & genomic medicine
|April 18, 2024
概括
甲基甲酸转糖酶缺乏症 (OTCD) 对女性的影响不同于以前认为的. 许多"无症状"的女性经历了神经精神问题,并且在以后的生活中可能会患上高氨血症.
科学领域:
- 生物化学和遗传学 生物化学和遗传学
- 神经学 神经学
- 代谢障碍 代谢障碍 代谢障碍
背景情况:
- 甲基甲酸转糖酶缺乏症 (OTCD) 是一种X相关的尿素循环障碍,导致高氨血 (HA),具有显著的发病率和死亡率.
- 大约80%的女性患有OTCD被认为是无症状的,但他们的长期健康脆弱性和临床特征未得到充分研究.
- 神经成像和认知测试显示,无症状的女性可能在认知压力下出现前额叶皮质变化和执行功能缺陷.
研究的目的:
- 调查预测 OTCD 携带者明显无症状的女性并发症和严重疾病的因素.
- 突出多式神经成像在评估患有OTCD的女性真实健康状况方面的实用性.
- 要强调,女性OTCD携带者的"无症状"状态可能并不代表完全没有健康风险.
主要方法:
- 在尿素循环障碍联盟 (UCDC) 数据库中,对302个患有OTCD的雌性异构体的数据进行了回顾性分析.
- 在一个探头和她的女儿身上应用多式神经成像技术,以说明发现.
- 为了进行比较分析,将女性分为有症状 (Symptomatic),无症状 (Asymptomatic) 和最初无症状但后来有症状 (Asymptomatic/Symptomatic) 的组.
主要成果:
- 在111名Asx和22名Asx/Sym女性中,大多数没有限制蛋白质摄入量;分别约38%和33%的人患有神经精神问题 (例如情绪,睡眠障碍).
- 在Asx和Asx/Sym组中观察到晚年轻度至重度HA的综合风险为~4%,其中一些需要住院治疗和取物治疗.
- 第一次HA危机的中位数年龄为50岁,与此队列中初始神经精神病或行为症状的中位数年龄为17岁形成对比.
结论:
- 研究结果表明,患有OTCD的"无症状"女性并没有真正摆脱潜在的并发症.
- 多模式神经成像强调,这些人并不总是无症状,揭示了潜在的脆弱性.
- 制定基于证据的管理准则和风险计算器对于改善这一群体的长期生活质量至关重要.
关键词:
尿素循环障碍协会联盟扩散张力成像的成像方法功能性核磁共振成像 (MRI) 的使用.功能近红外光谱学近红外光谱学过高氨血的情况.磁共振光谱学 磁共振光谱学甲酸转碳胺酶缺乏症 甲酸转碳胺酶缺乏症前额叶皮层前额叶皮层尿素循环障碍 尿素循环障碍更多相关视频
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