Cell Death Dis:Atg7依赖性自噬的破坏导致电能动性干扰、外毛细胞丢失和耳聋

2020-11-07 AlexYang MedSci原创

Atg7是一个不可缺少的因子,在典型的非选择性自噬中起着重要作用。

Atg7是一个不可缺少的因子,在典型的非选择性自噬中起着重要作用。

最近,有研究人员表明,小鼠外毛细胞(OHCs)中Atg7的基因敲除会随着时间的推移引起立体声损伤、体细胞电能动性干扰和突触前带状物的退化,进而导致OHCs逐渐大规模丧失和随后的早发性深度听力损失。自噬功能受损破坏了OHC线粒体功能,引起功能障碍线粒体的积累;正常情况下,功能障碍线粒体能够被及时的清除。与Atg7无关的自噬/线粒体过程不能弥补Atg7的缺失,也不能挽救终末分化的非增殖性OHCs。

Atg7缺陷OHCs和对照OHCs的TEM显微照片

最后,研究人员指出,OHCs协调了复杂的非选择性和选择性自噬/裂解途径,并协同工作来维持细胞稳态。总的来说,他们的结果表明了Atg7依赖性自噬在保护OHCs和维持听力功能方面起着关键的细胞保护作用。

原始出处:

Han Zhou, Xiaoyun Qian, Nana Xu et al. Disruption of Atg7-dependent autophagy causes electromotility disturbances, outer hair cell loss, and deafness in mice. Cell Death Dis. Oct 2020

 

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    2021-03-03 zhaojie88
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    2020-11-15 维他命
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    2020-11-12 ms3000000449926787

    学习

    0

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    2020-11-09 cy0328

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Laryngoscope:单边耳聋儿童耳蜗移植研究

最近,有研究人员阐释了他们对单边耳聋(SSD)儿童进行单边耳蜗移植(CI)治疗的经验。研究是一个回顾性的案例系列研究,包括了14名小于18岁的SSD儿科患者,并且经历了单边CI。研究发现,CI时的平均年龄为5.0岁(中值4.4,范围1.0-11.8岁)。耳聋持续的时间均值为3.0年(中值2.4,范围0.6-7.0年)。平均跟踪调查时间为3.4年。在8名患者中具有CI后至少1年的言语认知测试结果。只

Eur Arch Otorhinolaryngol:突发听力损失后的单边耳聋研究

单边耳聋(SSD)是个体在一只耳朵中有非功能性听力,并且该耳朵不能从扩声中获得临床益处的一种疾病,且对侧耳具有正常的听觉功能。耳蜗植入是SSD听力重建的一种很好的选择。耳蜗神经(CN)缺陷与耳蜗植入不

Int J Pediatr Otorhinolaryngol:单边耳聋儿童的治疗挑战和临床特征

儿童单侧耳聋(SSD)的临床意义历来不被患者和医疗机构所重视,尽管有大量的文献报道产生了神经认知、语言、学习和功能障碍。传统扩增治疗的特点是结果多样,而且随访经常丢失。

Am J Otolaryngol:突发感音神经性耳聋患者中的前庭调查和眩晕症状比较

突发感音神经性耳聋(SSNHL)中的眩晕被认为是该疾病的一种扩展,由耳蜗和前庭解剖上的接近引起。最近,有研究人员阐释了前庭功能测试(VFT)结果与SSNHL疾病严重度和预后的相关性。

Otol Neurotol:耳蜗死区对突发感音神经性耳聋听力结果的影响研究

最近,有研究人员在多中心研究中前瞻性的评估了死区(DRs)在突发感音神经性耳聋(SSNHL)中的患病率,并根据DRs的有无比较了SSNHL的临床特征和听力结果。

Braz J Otorhinolaryngol:突发感音神经性耳聋中不良预后的预测参数研究

突发感音神经性耳聋的预后可以通过使用实验室血液分析的一些参数来进行预测。最近,有研究人员鉴定和调查了突发感音神经性耳聋不良预后的最显著的指示参数。