TrkB levels in the cochlear nucleus after unilateral cochlear ablation: correlations with post-lesion plasticity.

Abstract:

:Tyrosine kinase B (TrkB) levels in the adult guinea pig cochlear nucleus (CN) were determined from Western blots for up to 60 days after unilateral cochlear ablation (UCA). Compared to TrkB levels on the intact side, those on the lesioned side were elevated in the anteroventral CN (AVCN) at 7 and 60 days and in the posteroventral CN (PVCN) at 30 days. TrkB levels were depressed in the AVCN and the dorsal CN (DCN) at 30 days. Elevations in the AVCN on the lesioned side at 7 days coincided with a period of synaptogenesis. Other changes were temporally related to up- or downregulations of transmitter release and synaptic receptor activities that were evident after UCA. The findings suggest that changes in signaling through TrkB may contribute to the plasticities in the CN that were evident after UCA.

journal_name

Brain Res

journal_title

Brain research

authors

Suneja SK,Potashner SJ

doi

10.1016/s0006-8993(02)03679-x

subject

Has Abstract

pub_date

2002-12-13 00:00:00

pages

366-8

issue

2

eissn

0006-8993

issn

1872-6240

pii

S000689930203679X

journal_volume

957

pub_type

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