Drug distribution along the cochlea is strongly enhanced by low-frequency round window micro vibrations
Drug distribution along the cochlea is strongly enhanced by low-frequency round window micro vibrations
复制标题
低频圆窗微振动强烈增强药物沿耳蜗的分布
DOI:
10.1101/2021.05.05.442757
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Flaherty S
中科院分区:
文献类型:
--
作者:
Flaherty S
The cochlea’s inaccessibility and complex nature provide significant challenges to delivering drugs and other agents uniformly, safely and efficiently, along the entire cochlear spiral. Large drug concentration gradients are formed along the cochlea when drugs are administered to the middle ear. This undermines the major goal of attaining therapeutic drug concentration windows along the whole cochlea. Here, utilizing a well-known physiological effect of salicylate, we demonstrate a proof of concept in which drug distribution along the entire cochlea is enhanced by applying round window membrane low-frequency micro vibrations with a probe that only partially covers the round window. We provide evidence of enhanced drug influx into the cochlea and cochlear apical drug distribution without breaching cochlear boundaries. It is further suggested that ossicular functionality is not required for the effective drug distribution we report. The novel method presented here of local drug delivery to the cochlea could be implemented when ossicular functionality is absent or impeded and can be incorporated in clinically approved auditory protheses for patients who suffer with conductive, sensorineural or mixed hearing loss.
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DOI:
10.1016/j.jconrel.2013.11.021
发表时间:
2014-01-28
期刊:
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影响因子:
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作者:
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2008
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影响因子:
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作者:
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影响因子:
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通讯作者:
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