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一个以心脏损害为首发症状的杜氏肌营养不良症家系的遗传学及临床研究

Genetic and clinical study on a family of Duchenne muscular dystrophy with cardiac impairment as the first symptom

来源期刊: 广州医药 | 36-41 发布时间:2021-11-28 收稿时间:2025/11/13 17:47:58 阅读量:9
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假肥大肌营养不良症心脏损害抗肌萎缩蛋白基因新发无义突变
Duchenne muscular dystrophyCardiac damageDMD geneNovel nonsense mutation
DOI:
10.3969/j.issn.1000-8535.2020.03.008
收稿时间:
2020-01-07 
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0  
目的 总结一个以心脏损害为首发症状的假肥大肌营养不良症家系的遗传学及临床特征。方法 对先证者和家系成员进行临床观察、并收集其血清酶、胸片、心电图、 心脏彩色超声、肌肉组织活检及抗肌萎缩蛋白基因突变检测等结果。结果 先证者及家系成员患者符合假肥大肌营养不良症诊断,但以心脏扩大为首发症状,表现为心肌酶谱异常,心电图异常,心彩超提示扩张型心肌病,同时骨骼肌受累不明显,基因检测提示先证者及家系成员患者携带抗肌萎缩蛋白基因外显子40的无义突变[c.5632C>T, p(Gln1878*)]。结论 该家系成员患者符合X连锁扩张型心肌病诊断,患者存在新发的抗肌萎缩蛋白基因无义突变。
Objective To summarize the genetic and clinical characteristics of a family with Duchenne muscular dystrophy (DMD) with cardiac damage as the first symptom. Methods The results of clinical observations, laboratory tests, chest radiographs, electromyography, echocardiography, muscle tissue biopsies, and DMD gene mutations were collected. Results Patients with probands and family members met the diagnosis of DMD. However, cardiac enlargement was the first symptom, presenting as abnormal myocardial enzyme spectrum, abnormal electrocardiogram, and dilated cardiomyopathy in echocardiography, while skeletal muscle involvement was not obvious. One nonsense pathogenic mutation c.5632C>T, p(Gln1878*) of exon 40 in the DMD gene was identified in the patients with probands and family members. Conclusion The patients of this family met the diagnosis of x-linked dilated cardiomyopathy, and a new nonsense pathogenic mutation of DMD gene was identified in this family.
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