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Int J Mol Sci:Claudin-14变异引起的耳聋详细临床特性分析

2019-09-27 AlexYang MedSci原创

细胞连接中的紧密连接在上皮的屏障功能中具有主要的作用。在内耳,紧密连接蛋白、闭合蛋白、三角蛋白和角蛋白形成了膜蛋白的双细胞或者三细胞的结合。其中,一个编码紧密连接蛋白基因CLDN14被报道与人类遗传性听力损失DFNB29有关。到目前为止,已经报道了9个致病性变异位点,并且大多数表型特征仍旧不清楚。最近,有研究人员在一个大的日本家族中对68个之前已经报道的耳聋致病基因进行了筛选,并鉴定了CLDN14

细胞连接中的紧密连接在上皮的屏障功能中具有主要的作用。在内耳,紧密连接蛋白、闭合蛋白、三角蛋白和角蛋白形成了膜蛋白的双细胞或者三细胞的结合。其中,一个编码紧密连接蛋白基因CLDN14被报道与人类遗传性听力损失DFNB29有关。到目前为止,已经报道了9个致病性变异位点,并且大多数表型特征仍旧不清楚。

最近,有研究人员在一个大的日本家族中对68个之前已经报道的耳聋致病基因进行了筛选,并鉴定了CLDN14的变异情况,还对DFNB29在日本人群中的患病率和临床特性进行分析。研究发现,其中1名患者具有纯合的新变异(c.241C>T: p.Arg81Cys) (0.04%: 1/2549)。该患者表现出了渐进性双边听力损失,并在语后发病。纯音听觉测试表明了是一种高频听力损失类型,并且退化逐渐发展到其他频率。该患者表现出了正常的前庭功能。耳蜗移植能够改善该患者的听觉阈值水平,而不能改善其辨别得分。

最后,研究人员指出,他们的研究表明了claudin-14对维持内耳的环境是必要的,也表明了DFNB29可能的表型扩展。这也是紧密连接变异患者接受耳蜗移植的首例报道。

原始出处:

Kitano T, Kitajiri SI, Nishio SY et al. Detailed Clinical Features of Deafness Caused by a Claudin-14 Variant. Int J Mol Sci. 16 Sep 2019

本文系梅斯医学(MedSci)原创编译整理,转载需授权!

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    2019-12-26 hb2008ye
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    2019-09-29 深海的鱼

    学习学习学习

    0

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    2019-09-29 飛歌

    学习了很有用不错

    0

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