Laryngoscope:中耳超声微泡地塞米松治疗能够减轻噪音诱导的听力损失

2019-01-11 AlexYang MedSci原创

最近,有研究人员测试了超声(US)协助微泡(MBs)给药反圆窗膜地塞米松(DEX)治疗的效果,并在动物模型中评估了噪音接触的预防作用。研究包括了42只豚鼠并分成3个小组:鼓膜泡填充DEX和MBs并暴露于US组,即 US-MBs (USM) 组;卵圆窗浸泡(RWS)组,且没有US接触;以及一个对照组。上述操作均在白噪音接触前的2个小时进行。研究人员评估了耳蜗损伤,包括了听觉阈值变化、听毛损失和耳蜗H

最近,有研究人员测试了超声(US)协助微泡(MBs)给药反圆窗膜地塞米松(DEX)治疗的效果,并在动物模型中评估了噪音接触的预防作用。

研究包括了42只豚鼠并分成3个小组:鼓膜泡填充DEX和MBs并暴露于US组,即 US-MBs (USM) 组;卵圆窗浸泡(RWS)组,且没有US接触;以及一个对照组。上述操作均在白噪音接触前的2个小时进行。研究人员评估了耳蜗损伤,包括了听觉阈值变化、听毛损失和耳蜗HMGB1的表达。研究发现,EDX给药效率在MSM组是RWS组的2.4到11.2倍。在噪音接触后与对照组相比,RWS组表现出了明显的耳蜗保护作用,并且在USM组中,该保护作用更加明显。

最后,研究人员指出,US-MBs的应用能够提供一个比自发扩散更为有效和安全的治疗途径,且自发扩散治疗方法在临床实践中很常见;因此,他们的技术能够为未来的内耳药物传输打下基础。

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    2019-10-09 feather89
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    2019-01-13 ysjykql
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    2019-01-13 龙胆草

    学习谢谢分享

    0

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    2019-01-12 1dd8a7c5m95(暂无匿称)

    认真学习,不断进步,把经验分享给同好。点赞了!

    0

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听力损失(hearing loss)又称聋度(deafness)或听力级(hearing level)。是人耳在某一频率的听阈比正常听阈高出的分贝数。由于年龄关系产生的听力损失称为老年性耳聋;由于社会环境噪声(年龄、职业性噪声和疾病等影响除外)产生的听力损失称为社会性耳聋;职业性噪声导致的听力损失称为噪声性耳聋。梅斯医学小编整理了近期听力损失的研究进展,与大家一起分享学习!【1】Diabeto

盘点:听力损失机制研究

【1】J Am Acad Audiol:听力损失严重度与主管耳鸣响度关系研究听力损失经常与耳鸣的幻听相关。然而,听力损失的严重度与耳鸣响度(考虑到其他的变量,比如情绪障碍)之间的相关性仍旧没有很好的阐释。这对听力学家,尤其是耳鸣康复方面专家来讲是非常重要的,因为患者总是询问是否耳鸣响度的增加会使得他们的听力变得更差。最近,有研究人员探索了耳鸣响度与纯音听力阈值之间的关系。研究包括了445名连续