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A study on brain mechanisms in which mental activity influences salivary secretion

Research Project

Project/Area Number 18K11022
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 59040:Nutrition science and health science-related
Research InstitutionOkayama University

Principal Investigator

Mitoh Yoshihiro  岡山大学, 医歯薬学総合研究科, 助教 (20240872)

Co-Investigator(Kenkyū-buntansha) 藤田 雅子  岡山大学, 医歯薬学総合研究科, 助手 (40156881)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords顎下腺・舌下腺 / 上唾液核ニューロン / パッチクランプ法 / 免疫組織科学 / ドパミン / セロトニン / ノルアドレナリン / モノアミン / 免疫組織化学 / D1-like受容体 / ドパミン受容体 / スライス標本 / 唾液 / 精神活動
Outline of Final Research Achievements

The effects of dopamine (DA), serotonin (5HT), and noradrenaline (NA) on the rat superior salivary nucleus neurons, which is the parasympathetic center of the submandibular and sublingual salivary glands, were investigated using slice patch clamp method. DA and 5HT generated inward currents, but not NA. DA also generated outward currents. 5HT and NA increased the frequency of miniature excitatory postsynaptic currents, but not DA. Immunohistochemical studies for DA receptors demonstrated that the neurons had immunoreactivities for D1-like receptors involved in excitatory effects, and those for D2-like receptors involved in inhibitory effects. These results suggest that salivary secretion may change with mental condition.

Academic Significance and Societal Importance of the Research Achievements

ストレスにより口が渇くことや(唾液の減少)、おいしいものを見たり想像したとき唾液が出るように、精神活動により唾液分泌が変化することが知られる。しかしそのメカニズムは全く知られていない。本研究は、精神活動に関わる神経伝達物質のドパミン、セロトニンおよびノルアドレナリンが唾液分泌の副交感神経の中枢に影響することを示した。ストレスを減らした生活はおいしく味わって食べることにつながり、延いては健康な生活を送ることにつながるということを本研究は示唆しているかもしれない。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (11 results)

All 2020 2019 2018 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (7 results) (of which Int'l Joint Research: 1 results) Remarks (1 results)

  • [Journal Article] Orexin A and B in the rat superior salivatory nucleus2020

    • Author(s)
      Sato Tadasu、Yajima Takehiro、Fujita Masako、Kobashi Motoi、Ichikawa Hiroyuki、Yoshida Ryusuke、Mitoh Yoshihiro
    • Journal Title

      Autonomic Neuroscience

      Volume: 228 Pages: 102712-102712

    • DOI

      10.1016/j.autneu.2020.102712

    • NAID

      120007124976

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The Effects of Mutual Interaction of Orexin-A and Glucagon-Like Peptide-1 on Reflex Swallowing Induced by SLN Afferents in Rats2020

    • Author(s)
      Kobashi Motoi、Shimatani Yuichi、Fujita Masako、Mitoh Yoshihiro、Yoshida Ryusuke、Matsuo Ryuji
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 21 Issue: 12 Pages: 4422-4422

    • DOI

      10.3390/ijms21124422

    • NAID

      120006877904

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of bitter receptor antagonists on behavioral lick responses of mice2020

    • Author(s)
      Masamoto Michimasa、Mitoh Yoshihiro、Kobashi Motoi、Shigemura Noriatsu、Yoshida Ryusuke
    • Journal Title

      Neuroscience Letters

      Volume: 730 Pages: 135041-135041

    • DOI

      10.1016/j.neulet.2020.135041

    • NAID

      120007037396

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] オレキシンは顎下腺・舌下腺支配の副交感神経節前ニューロンを興奮させる2020

    • Author(s)
      美藤純弘、佐藤匡、矢島健太、藤田雅子、小橋基、市川博之、吉田竜介
    • Organizer
      第74回日本栄養・食糧学会大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ラット嚥下反射に及ぼすオレキシン A とグルカゴン様ペプチド 1 の相互 抑制作用2020

    • Author(s)
      小橋基,美藤純弘,吉田竜介
    • Organizer
      第62回歯科基礎医学会学術大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 上唾液核ニューロンに対する摂食亢進ペプチドの影響2020

    • Author(s)
      美藤純弘、佐藤匡、矢島健太、藤田雅子、小橋基、市川博之、吉田竜介
    • Organizer
      第97回日本生理学会大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Effects of appetite-boosting peptides on the superior salivatory nucleus neurons innervating the salivary glands in rats.2019

    • Author(s)
      Mitoh Y, Satoh T, Fujita M, Kobashi M, Ichikawa H, Yoshida R
    • Organizer
      第61回歯科基礎医学会学術大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Effects of appetite-boosting peptides on parasympathetic preganglionic neurons innervating the submandibular and sublingual salivary glands in rats.2019

    • Author(s)
      Mitoh Y, Satoh T, Fujita M, Kobashi M, Ichikawa H, Yoshida R
    • Organizer
      日本味と匂学会第53回大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Effects of feeding-promoting peptides on excitability of the superior salivatory nucleus neurons2019

    • Author(s)
      Yoshihiro Mitoh, Tadasu Sato, Masako Fujita, Hiroyuki Ichikawa, Motoi Kobashi, Ryusuke Yoshida
    • Organizer
      The 9th Federation of the Asian and Oceanian Physiological Societies Congress
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of peptides promoting food intake on the superior salivatory nucleus neurons innervating the submandibular and sublingual salivary glands.2018

    • Author(s)
      Yoshihiro Mitoh, Tadasu Sato, Masako Fujita, Hiroyuki Ichikawa, Motoi Kobashi, Ryusuke Yoshida
    • Organizer
      第60回歯科基礎医学会学術大会
    • Related Report
      2018 Research-status Report
  • [Remarks] 岡山大学大学院医歯薬学総合研究科 口腔生理学分野のホームページ

    • URL

      https://www.okayama-u.ac.jp/user/oralphys/Publication.html

    • Related Report
      2020 Annual Research Report

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Published: 2018-04-23   Modified: 2022-01-27  

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