【摘要】 目的一个连续三代的常染色体显性遗传先天性非进展性非综合症型耳聋家系的临床听力学特征及遗传规律。方法对耳聋家系成员进行病史采集、体格检查、纯音测听、声导抗、听性脑干反应检测,其中一名患者进行颞骨CT扫描检查。绘制遗传图谱并进行遗传学特征分析。结果该家系成员共计18人,耳聋患者11人,其中一例为氨基糖苷类药物致聋患者。该耳聋家系每代及男女均有发病,非药物致聋患者均表现为语前聋、平稳型、全频中度听力下降,听力曲线呈平坦型。结论该家系遗传方式符合常染色体显性遗传规律,表现为全频中度感音神经性耳聋。该研究为下一步的致聋基因的定位与鉴定奠定了良好的工作基础。更多还原

【Abstract】 Objective To study the phenotypes and genetic characteristics of a three-generation Chinese family with autosomal dominant inherited progressive nonsyndromic hearing loss.Methods Pedigree was drawn after the investigation.Eighteen family members were examined including detailed audiology tesing(pure tone assay,acoustic immittance comprised of 18 members,of whom 11 were affected.One patient had a history of using aminoglycosides.The pattern of inheritance of this family was autosomal dominant based on the investigation information.The affected members showed prelingual,stable,bilateral moderate sensorineural hearing impairment involving all frequencies.The audiograms showed generally flat hearing loss.Conclusion Pedigree analysis suggests an autosomal dominant hereditary pattern in this family.The information from this study will facilitate linkage analysis and positional cloning for identifying the causative gene in this family.更多还原