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临床,病理和遗传特征在一个大型的中国队列与女性肌痛性肌痛症

Chang Liu¹, Jiajian Ma², Yanyu Lu¹

¹Department of Neurology, Peking University First Hospital, Beijing 100034, China.

Neuromuscular disorders : NMD

|September 16, 2023

概括

患有肌痛性肌痛病的女性携带者可以表现出症状,严重程度与走路延迟,高肌酸激酶水平和X染色体失活模式等因素有关. 这项研究突出了这些患者严重表型的关键指标.

科学领域:

神经学神经学
遗传学遗传学是一个
病理学病理学病理学

背景情况:

肌肉发育不良症,包括杜恩肌肉发育不良症 (DMD) 和贝克尔肌肉发育不良症 (BMD),主要影响男性.
携带DMD变异的女性携带者通常无症状,但可以表现出一系列的临床表现.
了解女性携带者的临床,病理和遗传因素对于准确的诊断和管理至关重要.

研究的目的:

为了研究中国女性带有肌痛性肌痛病的临床,病理和遗传特征.
确定这些特征与疾病表型之间的相关性.
报告迄今为止最大的一系列有症状的女性DMD载体.

主要方法:

招募了140名经遗传和/或病理确认的女性DMD变体携带者 (104个无症状,36个有症状).
在53名携带者中进行了肌肉病理分析,在19名携带者中进行了X染色体失活 (XCI) 分析.
分析了临床数据,包括年龄,发病年龄和血清肌酸激酶 (CK) 水平.

主要成果:

与无症状携带者相比,症状携带者出现更早的发病,更高的CK水平和更严重的肌肉衰弱.
具有X-自动体转位的四名女性携带者表现出一个DMD表型.
在70%的有症状的携带者中观察到曲的XCI;与BMD类似的携带者相比,与DMD类似的携带者相比,DMD类似的携带者表现出较早的发病,快速进展,CK升高,变质素降低和曲的XCI.

结论:

走路延迟,CK水平升高,严重的双蛋白减少,X-自体转位和偏斜的XCI与女性双蛋白病的严重表型有关.
这项研究提供了有价值的见解,对女性肌痛性肌痛病的异质性.
强调遗传和病理评估在有症状的女性携带者中的重要性.

关键词:

贝克尔肌肉缩症贝克尔肌肉缩症杜申尼肌肉发育不良症杜申尼肌肉发育不良症一个女人,一个女人.一个X染色体不活化.

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