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Auditory and Vestibular Systems

AMPA‐type glutamate receptor subunits are expressed in the avian cochlear hair cells and ganglion cells

Reng, Diana1; Hack, Iris2; Müller, Marcus1; Th Smolders, Jean W.1,3

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THE cellular localization of AMPA-type glutamate receptor subunits was examined in the pigeon inner ear using subunit specific polyclonal antibodies (GluR1–4). In the auditory ganglion cell bodies immunoreactivity for the subunits GluR2/3 and GluR4, but not for GluR1 was detected. The hair cells showed diffuse immunoreactivity for GluR4. Additionally, immunostaining for the subunits GluR2/3 and GluR4 was present below the hair cells. These results indicate that the AMPA type glutamate receptors play a role in neurotransmission at the hair cell afferent synapse in the avian auditory system.

© 1999 Lippincott Williams & Wilkins, Inc.


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