A new aspect of aminoglycoside ototoxicity: impairment of cochlear dopamine release.

Abstract:

:Aminoglycoside ototoxicity is a well-documented process via several pathophysiological pathways. The protective role of cochlear dopamine, released from the lateral olivocochlear efferents, was implicated previously in case of ischemia or acoustic trauma, as it postsynaptically inhibits the effect of excessively released glutamate from the hair cells. In our in vitro superfusion experiments we showed that neomycin dose- dependently inhibits the dopamine release from isolated guinea pig cochlea, while gentamicin and kanamycin was ineffective on it. After chronic application of neomycin the dopamine outflow did not change significantly, suggesting an adaptive process. In our experiments we have found a possibly new action site of one of the aminoglycoside antibiotics, neomycin.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Gáborján A,Halmos G,Répássy G,Vizi ES

doi

10.1097/00001756-200110290-00036

subject

Has Abstract

pub_date

2001-10-29 00:00:00

pages

3327-30

issue

15

eissn

0959-4965

issn

1473-558X

journal_volume

12

pub_type

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