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Sci Rep. 2011;1:159. doi: 10.1038/srep00159. Epub 2011 Nov 16.

Systemic aminoglycosides are trafficked via endolymph into cochlear hair cells.

Author information

1
Oregon Hearing Research Center, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, Oregon 97239, USA.

Abstract

Aminoglycoside antibiotics rapidly enter and kill cochlear hair cells via apical mechanoelectrical transduction (MET) channels in vitro. In vivo, it remains unknown whether systemically-administered aminoglycosides cross the blood-labyrinth barrier into endolymph and enter hair cells. Here we show, for the first time, that systemic aminoglycosides are trafficked across the blood-endolymph barrier and preferentially enter hair cells across their apical membranes. This trafficking route is predominant compared to uptake via hair cell basolateral membranes during perilymph infusion.

PMID:
22355674
PMCID:
PMC3240991
DOI:
10.1038/srep00159
[Indexed for MEDLINE]
Free PMC Article

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