Projections to the trigeminal jaw-opening and jaw-closing premotoneurons in the nucleus of the solitary tract

2013 Fiscal Year Final Research Report

• Project/Area Number: 24890124
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Orthodontic/Pediatric dentistry
• Research Institution: Osaka University
• Principal Investigator: OKA ayaka 大阪大学, 歯学部附属病院, 医員 (20635403)
• Project Period (FY): 2012-08-31 – 2014-03-31
• Keywords: 運動前ニューロン / 孤束核 / 末梢性神経 / 大脳皮質

Research Abstract

This study clarified the neural mechanisms underlying jaw movements in swallowing in rats. We have examined the features of the jaw-opening [JO] and jaw-closing [JC] premotoneurons in the Solitary (Sol), which control the JO and JC motoneurons, respectively, and how the both premotoneurons are controlled by the peripheral and central inputs. As result, a large number of the JO premotoneurons and JC premotoneurons exist in the rostral levels of the Sol, but most of them are intermingled. The both premotoneurons highly likely receive inputs from the superior laryngeal nerve and the rostral insular cortex. Therefore, the present results suggest that JO and JC premotoneurons in the Sol are activated during pharyngolaryngeal reflexes as the swallow, and that the activation is influenced by the insular cortex which is involved in the autonomic and limbic function.

Research Products

• [Journal Article] Jaw-opening and -closing premotoneurons in the nucleus of the solitary tract making contacts with laryngeal and pharyngeal afferent terminals in rats (2013)
  • Author(s): Oka A, Yamamoto M, Takeda R, Ohara, H, Sato F, Akhter F, Haque T, Kato T, Sessle BJ, Takada K, Yoshida A
  • Journal Title: Brain Res Volume: Vol 1540 Pages: 48-63
  • Peer Reviewed
• [Journal Article] Nonextraction treatment of open-bite by sequential uses of tongue crib, temporary anchorage devices and myofunctional therapy : a case report of an adolescent (2013)
  • Author(s): Oka A, Tanikawa C, Takigawa Y, Yashiro K
  • Journal Title: Orthodontic Waves Volume: Vol. 72 Pages: 112-118
  • Peer Reviewed
• [Presentation] 三叉神経感覚核ならびに大脳皮質一次および二次体性感覚野から背側視床への投射の検討 (2013)
  • Author(s): 武田理恵子、大原春香、岡綾香、佐藤文彦、加藤隆史、山城隆、吉田篤
  • Organizer: 第7回三叉神経領域の感覚-運動統合機構研究会
  • Place of Presentation: 新潟
  • Year and Date: 20131130-1201
• [Presentation] 開口筋運動前ニューロンと閉口筋運動前ニューロンのラット孤束核内での機能局在 (2013)
  • Author(s): 岡綾香、武田理恵子、大原春香、佐藤文彦、加藤隆史、山城隆、吉田篤
  • Organizer: 第25回NPO法人日本口腔科学会近畿地方部会
  • Place of Presentation: 大阪
  • Year and Date: 2013-12-07
• [Presentation] 上顎骨の水平的仮骨延長術と上下顎骨同時骨切り術の併用により咬合および顔貌の改善を得た一治験例 (2013)
  • Author(s): 岡綾香、社浩太郎、山城隆
  • Organizer: 第55回近畿東海矯正歯科学会学術大会
  • Place of Presentation: 岐阜
  • Year and Date: 2013-06-16
• [Presentation] Projections to the trigeminal jaw-opening and jaw-closing Premotoneurons in the nucleus of the solitary tract from the pharyngeal mucosa and the insular cortex in rats (2012)
  • Author(s): Oka A, Takeda R, Sato F, Akhter F, Haque T, Kato F, Ohara H, Bae Y-C, Takada K, Moritani M, Yoshida A
  • Organizer: Neuroscience 2012
  • Place of Presentation: New Orleans
  • Year and Date: 2012-10-17
• [Presentation] 孤束核における開口運動前ニューロンならびに閉口筋運動前ニューロンの存在ならびに機能局在 (2012)
  • Author(s): 岡綾香・吉田篤
  • Organizer: 三叉神経学会
  • Place of Presentation: 東京
  • Year and Date: 2012-07-08