Mu-opioid receptor (MOR) expression in the human spiral ganglia.

Mu-opioid receptor (MOR) expression in the human spiral ganglia.
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DOI:
10.1016/j.brainres.2014.09.051
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发表时间:
2014-11-24
期刊:
影响因子:
2.9
通讯作者:
Ishiyama, Gail
Ishiyama, Gail
中科院分区:
医学3区
文献类型:
--
作者:
Nguyen, Kimanh D.;Mowlds, Donald;Lopez, Ivan A.;Hosokawa, Seiji;Ishiyama, Akira;Ishiyama, Gail

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阿片肽及其受体已定位于大鼠和豚鼠哺乳动物模型的内耳。 mu 阿片受体 (MOR) 在人和小鼠耳蜗中的表达尚不清楚。我们通过免疫组织化学方法展示了 MOR 蛋白的定位,并通过原位杂交展示了人类和小鼠螺旋神经节 (SG) 和柯蒂氏器中的 mRNA 表达。在人类中,大多数(SG)神经元都具有免疫反应性;一个子集是非免疫反应性的。原位杂交揭示了 SG 神经元的类似标记模式。小鼠 SG 中也显示出类似的 MOR 分布模式。在小鼠 Corti 器官中,MOR 在内毛细胞和外毛细胞中表达。内毛细胞下方的纤维也具有 MOR 免疫反应性。这些结果与 MOR 在听觉周围神经调节中的作用一致。目前的结果表明,MOR 的表达在多种哺乳动物物种中都非常保守,这表明 MOR 在听觉处理中发挥着重要作用。
Opioid peptides and their receptors have been localized to the inner ear of the rat and guinea pig mammalian models. The expression of mu opioid receptor (MOR) in the human and mouse cochlea is not yet known. We present MOR protein localization by immunohistochemistry and mRNA expression by in situ hybridization in the human and mouse spiral ganglia (SG) and organ of Corti. In the human most of the (SG) neurons were immunoreactive; a subset was non-immunoreactive. In situ hybridization revealed a similar labeling pattern across the neurons of the SG. A similar distribution MOR pattern was demonstrated in the mouse SG. In the mouse organ of Corti MOR was expressed in inner and outer hair cells. Fibers underneath the inner hair cells were also MOR immunoreactive. These results are consistent with a role of MOR in neuro-modulation of the auditory periphery. The present results show that the expression of MORs is well-conserved across multiple mammalian species, indicative of an important role in auditory processing.
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