How many hair follicles are innervated by one afferent axon? A confocal microscopic analysis of palisade endings in the auricular skin of thy1-YFP transgenic mouse
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- SUZUKI Maasa
- Department of Anatomy, Meiji University of Integrative Medicine
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- EBARA Satomi
- Department of Anatomy, Meiji University of Integrative Medicine
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- KOIKE Taro
- Department of Anatomy and Cell Science, Kansai Medical University
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- TONOMURA Sotatsu
- Department of Anatomy, Meiji University of Integrative Medicine
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- KUMAMOTO Kenzo
- Department of Anatomy, Meiji University of Integrative Medicine
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Hairs are known as a sensory apparatus for touch. Their follicles are innervated predominantly by palisade endings composed of longitudinal and circumferential lanceolate endings. However, little is known as to how their original primary neurons make up a part of the ending. In this study, innervation of the palisade endings was investigated in the auricular skin of thy1-YFP transgenic mouse. Major observations were 1) Only a small portion of PGP9.5-immunopositive axons showed YFP-positivity, 2) All of thy1-YFP-positive sensory axons were thick and myelinated, 3) Individual thy1-YFP-positive trunk axons innervated 4–54 hair follicles, 4) Most palisade endings had a gap of lanceolate ending arrangement, 5) PGP9.5-immunopositive 10–32 longitudinal lanceolate endings were closely arranged. Only a part of them were thy1-YFP-positive axons that originated from 1–3 afferents, and 6) Single nerve bundles of the dermal nerve network included both bidirectional afferents. Palisade endings innervated by multiple sensory neurons might be highly sensitive to hair movement.<BR><BR>(Communicated by Kunihiko SUZUKI, M.J.A.)
収録刊行物
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- Proceedings of the Japan Academy. Ser. B: Physical and Biological Sciences
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Proceedings of the Japan Academy. Ser. B: Physical and Biological Sciences 88 (10), 583-595, 2012
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詳細情報 詳細情報について
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- CRID
- 1390282679122304000
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- NII論文ID
- 130002540351
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- NII書誌ID
- AA00785485
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- COI
- 1:STN:280:DC%2BC3s3htFyhtw%3D%3D
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- ISSN
- 13492896
- 03862208
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- NDL書誌ID
- 024252699
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- PubMed
- 23229751
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 使用不可