Expression change of mGluR5 in rat MVN after unilateral labyrinthectomy / 临床耳鼻咽喉头颈外科杂志

ABSTRACT

OBJECTIVE@#To observe the expression of mGluR5 in the medial vestibular nucleus (MVN) following unilateral labyrinthectomy (UL).@*METHOD@#Thirty Wistar rats were randomly divided into two groups. Twenty four animals received unilateral labyrinthectomy while the others maintained labyrinthine well. After setting left labyrinthine, the change of mGluR5 was induced by immunohistochemistry, in situ hybridization.@*RESULT@#mGluR5 was increased in lesioned side MVN after unilateral labyrinthectomy. The 12 h post-UL was highest. Then it was decrease in 36 h post-UL, while 7 d post-UL was same as control group. The change of contralateral was same as that in ipsilateral.@*CONCLUSION@#UL can induce increase of mGluR5 in the MVN. The reduced resting discharge in the primary vestibular afferents or in the central vestibular neurons may be responsible for the change of mGluR5. However the significance of the change of mGluR1 in the vestibular compensation is still unknown.