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首页> 外文期刊>ORL: Journal for oto-rhino-laryngology and its borderlands >Simultaneous detection of both nitric oxide and reactive oxygen species in Guinea pig vestibular sensory cells.
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Simultaneous detection of both nitric oxide and reactive oxygen species in Guinea pig vestibular sensory cells.

机译:同时检测豚鼠前庭感觉细胞中的一氧化氮和活性氧。

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摘要

Gentamicin-induced production of reactive oxygen species (ROS) and of nitric oxide (NO) in the vestibular end organs of the guinea pig was investigated by applying two new fluorescence indicators, 4,5-diaminofluorescein diacetate for direct detection of NO and dihydrotetramethylrosamine for ROS. The vestibular sensory cells produced both NO and ROS after exposure to gentamicin. A nonspecific inhibitor of NO synthase, L-NAME, inhibited the production of NO but did not appear to affect the production of ROS following exposure to gentamicin. In contrast, a radical scavenger, D-methionine, or the neurotrophin BDNF suppressed the production of ROS, in turn stimulating NO production. These findings could indicate that both NO and ROS play an important role in aminoglycoside ototoxicity.
机译:庆大霉素诱导的豚鼠前庭末端器官中活性氧(ROS)和一氧化氮(NO)的产生通过应用两种新的荧光指示剂直接用于检测NO的4,5-二氨基荧光素二乙酸盐和ROS。暴露于庆大霉素后,前庭感觉细胞同时产生NO和ROS。 NO合酶的非特异性抑制剂L-NAME抑制NO的产生,但在庆大霉素暴露后似乎不影响ROS的产生。相反,自由基清除剂,D-蛋氨酸或神经营养蛋白BDNF抑制了ROS的产生,进而刺激了NO的产生。这些发现可能表明,NO和ROS在氨基糖苷耳毒性中均起重要作用。

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