与COVID-19相关的MDA5-介导的死性肌炎
Sarah Steadman1, Amit Sikder2, Harsh R Desai3
1Edward Via College of Osteopathic Medicine-Carolinas Campus, Spartanburg, SC, USA.
The American journal of case reports
|December 17, 2025
概括
本病例报告详细介绍了一种与SARS-CoV-2感染相关的自身免疫性肌肉炎的罕见病例. 早期诊断COVID-19相关肌肉病变对于有效治疗和改善患者结果至关重要.
科学领域:
- 神经学 神经学
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
背景情况:
- 轮骨髓溶解和自身免疫性肌肉病有共同的症状,如肌肉疼痛和肌肉虚弱,使诊断复杂化.
- 在SARS-CoV-2流行病中,报告的自身免疫性肌肉炎病例的数量有所增加.
- 从临床上讲,区分病毒诱导的肌肉损伤与自身免疫性疾病是具有挑战性的.
研究的目的:
- 报告在SARS-CoV-2感染后出现的第一个黑色素瘤分化关联基因5 (MDA5) 关联的化性肌炎病例.
- 要突出一种独特的COVID-19相关肌肉病变的呈现,而没有典型的皮肤或肺部参与.
- 强调后病毒性自身免疫肌肉病的诊断挑战和治疗反应.
主要方法:
- 一个年轻的非洲裔美国男性患有SARS-CoV-2后肌肉病的临床病例介绍.
- 诊断工作包括血清肌酸激酶 (CK) 水平,炎症标志物,自身免疫面板和胸部CT.
- 使用静脉注射液体和经验性类固醇治疗的治疗评估.
- 通过肌肉活检和特定抗体测试 (MDA5) 确认.
主要成果:
- 患者在COVID-19后出现严重肌痛和虚弱,CK水平明显升高 (>300,000 U/L).
- 开始治疗狂犬病的治疗结果很差,但经验性类固醇导致了快速的症状和CK水平的改善.
- 肌肉活检证实了结核性肌肉炎,并检测出高MDA5抗体.
- 该患者缺乏典型的MDA5相关的皮肤和间歇性肺病表现.
结论:
- 这是首例由SARS-CoV-2感染引发的MDA5相关死性肌炎病例.
- 这位患者没有特征性皮肤和肺部发现,扩大了MDA5肌炎的临床谱.
- 进一步的研究是必要的,以了解COVID-19在自身免疫肌肉病变中的作用,并开发有针对性的治疗方法.
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