在DLD基因中的新型双变异导致可逆感官神经病变
Lu Wang1, Ying Xiong1,2, Kaiyan Jiang1
1Department of Neurology and Rare Disease Center, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China.
Clinical genetics
|September 1, 2025
概括
双胺脱酶缺乏 (DLDD) 可能导致可逆性感官神经病变,这是以前没有相关的症状. 一位患有这种罕见遗传疾病的患者早期的饮食治疗改善了症状.
科学领域:
- 生物化学
- 遗传学
- 神经学
背景情况:
- 双胺脱酶缺乏症 (DLDD) 是一种罕见的自体递归代谢疾病.
- DLDD通常会影响肝脏,大脑和肌肉,而外围神经病则以前没有出现过.
- 脂质积累和代谢失衡与DLDD的发病有关.
研究的目的:
- 报告一个新的DLDD病例与感官神经病变.
- 研究DLDD神经病的遗传和分子基础.
- 评估DLDD相关神经病变的向治疗的疗效.
主要方法:
- 临床评估,电生理学和神经活检.
- 对DLD变异的遗传分析和对DLD蛋白的西方抹杀.
- 使用无BCAA配方,甲基和胺的治疗.
主要成果:
- 一名20岁的女性出现肝功能障碍和严重的感觉轴突神经病变,并产生脂质积累.
- 鉴定出复合异构的DLD变体 (c.745G>T,p.G249C;c.1344_1347del,p.D448Efs*16),具有减少的DLD蛋白质.
- 治疗导致吐完全消失,神经病症状显著改善.
结论:
- 这是第一个将DLDD与可逆性感官神经病变联系起来的报告, 扩大了疾病的表型谱.
- 脂质失调和代谢失衡在DLDD中起作用.
- 早期的向性饮食治疗对于非典型的DLDD表现至关重要.
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