GluR4在单侧聋大鼠耳蜗核不同发育时间的表达~△

GluR4 Expression in Cochlear Nucleus of Rats with Single-side Deafness at Different Developmental Stages

原晶晶;闫占峰;周沫;葛鑫颖;刘锦峰;王鑫;巩政;张莹;刘思溟;王宁宇

1:北京中医药大学东直门医院

2:首都医科大学附属北京朝阳医院

摘要
目的 观察单侧耳蜗毁损后1、2、3、4周谷氨酸受体4(glutmate receptor 4,GluR4)在大鼠耳蜗核的表达变化,为探讨单侧聋听觉中枢重组的分子机制提供参考。方法 新生SD大鼠饲养至出生后12 d(P12),随机分为实验组(左侧耳蜗毁损32只)、伪手术组(进行伪操作32只)及对照组24只,术后1、2、3、4周取三组大鼠双侧耳蜗核,切片后采用免疫组化方法观察耳蜗核GluR4的表达变化。结果 伪手术组及对照组大鼠术后1、2、3、4周,双侧耳蜗核之间比较GluR4表达无统计学差异(P>0.05);伪手术组及对照组双侧耳蜗核GluR4的表达在不同发育时间比较,术后1周与2周相比,2周与3周相比差异均有显著统计学意义(P<0.01)。实验组大鼠耳蜗核两侧之间对比,术后1、2、3周双侧表达差异均有统计学意义(P<0.05);在不同发育时间对比,实验组术侧耳蜗核中GluR4的表达在术后2周与3周相比表达差异有显著统计学意义(P<0.01),而术后1周与2周、3周与4周相比无统计学差异(P>0.05)。实验组健侧术后2周与3周相比表达差异有统计学意义(P<0.05),术后3周与4周相比表达差异有统计学意义(P<0.05)。结论 单侧聋大鼠双侧耳蜗核GluR4的表达在发育中存在不对称改变。
关键词
单侧聋;谷氨酸受体4;耳蜗核
基金项目(Foundation):
北京市自然科学基金资助项目(7214290);; 北京中医药大学新教师基金启动项目(2022-JYB-XJSJJ-055)
作者
原晶晶;闫占峰;周沫;葛鑫颖;刘锦峰;王鑫;巩政;张莹;刘思溟;王宁宇
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