Restraint stress modulates glucocorticoid receptors and nuclear factor kappa B in the cochlea.

Abstract:

:The regulation of glucocorticoid receptors and nuclear factor kappaB was evaluated in the spiral ganglion neurons after 4 h of restraint stress in the mouse cochlea. Immediately after restraint stress, glucocorticoid receptor protein expression was not altered in spiral ganglion neurons even though both the plasma corticosterone levels and glucocorticoid receptor nuclear translocation increased. By 24 h after restraint stress, the protein expression of glucocorticoid receptors was decreased in spiral ganglion neurons. Pre-treatment with RU486 and metyrapone prevented nuclear translocation of glucocorticoid receptors and nuclear factor kappaB. Moreover, the synthesis of nuclear factor kappaB protein (p65) and inhibitory factor kappaBalpha decreased when RU486 and metyrapone treatment was given before restraint stress. These findings suggest that restraint stress modulates glucocorticoid receptor and nuclear factor kappaB activity in the spiral ganglion neurons, resulting in an altered response to stress.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Tahera Y,Meltser I,Johansson P,Canlon B

doi

10.1097/01.wnr.0000220131.24468.e7

subject

Has Abstract

pub_date

2006-06-26 00:00:00

pages

879-82

issue

9

eissn

0959-4965

issn

1473-558X

pii

00001756-200606260-00006

journal_volume

17

pub_type

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