TY - JOUR A1 - , T1 - Immunocytochemical distribution of the AMPA receptor subunits GluR2/3 and GluR4 in the cristae ampullares of the hatched chicken JO - Eur. J. Anat. SN - 1136-4890 Y1 - 2003 VL - 7 SP - 79 EP - 83 UR - http://www.eurjanat.com/web/paper.php?id=03020079 KW - AMPA receptor KW - glutamate receptor 2 KW - glutamate receptor 3 KW - glutamate receptor 4 KW - peroxidase KW - receptor subunit KW - animal tissue KW - article KW - chicken KW - cristae ampullares KW - development KW - electron microscopy KW - electrophysiology KW - epithelium KW - ganglion KW - hair cell KW - hair cell type I KW - hair cell type II KW - histology KW - immunocytochemistry KW - microscopy KW - neurotransmission KW - newborn KW - nonhuman KW - preembedding immunoperoxidase method KW - sensory nerve KW - technique KW - tissue distribution KW - ultrastructure KW - vestibular system KW - vestibular system epithelium KW - vestibule ganglion N2 - A preembedding immunoperoxidase method was used to study the distribution of the GluR2/3 and GluR4 AMPA subunits of the ionotropic glutamate receptors in the peripheral vestibular epithelium of the hatched chicken. At the light microscopic level, a strong immunoreactivity for both subunits was observed around type I hair cells in the cristae ampullares. At ultrastructural level, immunoreaction product was accumulated in calyx-type profiles of vestibular ganglion afferent fibres closely attached to type I hair cells. Occasionally, bouton-type endings supposedly on type II hair cells were immunostained for GluR4. These observations, together with the electrophysiological evidence, suggest that GluR2/3 and GluR4 subunits play a role in the transmission of vestibular sensory information during early development of the chicken. ER -