Existence of Gαi2-Expressing Axon Terminals in the Goat Main Olfactory Bulb

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概要

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• In rodents, Gαi2-expressing sensory neurons (SNs) that co-express vomeronasal receptor type 1 (V1R) are specifically found in the vomeronasal organ (VNO) and project their axons to the accessory olfactory bulb (AOB). In goats, however, Gαi2/V1R-expressing SNs exist in both the VNO and the olfactory epithelium. Thus, we examined whether the Gαi2-expressing axons functionally project to the main olfactory bulb (MOB). We analyzed the expression of Gαi2 in the olfactory bulb and found small Gαi2-immunoreactive clusters in the MOB. The Gαi2-immunoreactive axons in these clusters made synaptic contacts with second-order neurons in the MOB. These results suggest that some Gαi2-expressing SNs functionally project their axons to the MOB in goats.

著者

• OHARA Hiromi

  Laboratory of Neurobiology, National Institute of Agrobiological Sciences

• Okamura Hiroaki

  Laboratory Of Adaptation Physiology National Institute Of Animal Industry Ministry Of Agriculture Fo

• Mori Yuji

  Laboratory of Physical Chemistry Tokyo Institute of Technology

• HAGINO-YAMAGISHI Kimiko

  Department of Dementia and Higher Brain Function, Integrated Neuroscience Research Project, Tokyo Metropolitan Institute of Medical Science, 2–1–6 Kamikitazawa, Setagaya-ku, Tokyo 156–8506, Japan

• ICHIKAWA Masumi

  Center for Basic Technology Research, Tokyo Metropolitan Institute of Medical Science, 2–1–6 Kamikitazawa, Setagaya-ku, Tokyo 156–8506, Japan

• OHARA Hiromi

  Laboratory of Veterinary Ethology, The University of Tokyo, 1–1–1 Yayoi, Bunkyo-ku, Tokyo 113–8657, Japan

• OKAMURA Hiroaki

  Laboratory of Neurobiology, National Institute of Agrobiological Science, 2 Ikeno-dai, Tsukuba, Ibaraki 305–0901, Japan

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