• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Involvement of brain volume and stress-related hormone in cognitive impairment with age-related hearing loss

Research Project

Project/Area Number 17K00203
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Cognitive science
Research InstitutionGifu University

Principal Investigator

Aoki Mitsuhiro  岐阜大学, 大学院医学系研究科, 准教授 (30283302)

Co-Investigator(Kenkyū-buntansha) 林 寿光  岐阜大学, 大学院医学系研究科, 助教 (70397347)
若岡 敬紀  岐阜大学, 医学部附属病院, 助教 (70550317)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords老人性難聴 / 慢性炎症 / ストレス関連ホルモン / 海馬 / 認知症 / 慢性腎機能障害 / Voxel Based Morphometry / MRI
Outline of Final Research Achievements

Of the 36 elderly, the moderate or severe deafness group had higher Cortisol / DHEAS ratio (C/D ratio), albumin, AST, total inflammatory markers ( CRP + IL-6 + TNFa), hippocampal atrophy rate (HP%), and depression score than the normal or mild deafness group. In the partial correlation excluding the effect of age, the C/D ratio, high frequency hearing level, and hippocampal atrophy rate were correlated each other. The average hearing level in the middle frequency range was positively correlated with MDA-LDL and albumin. In the partial correlation whilst controlling for the effects of age and C/D ratio, the correlation between high frequency hearing level and hippocampal atrophy rate disappeared, and high frequency hearing level correlated with DHEAS only. It suggests that high C / D ratio, oxidative stress, and high calories may worsen hearing levels, resulting in hippocampal atrophy and depression.

Academic Significance and Societal Importance of the Research Achievements

高齢者における認知症の発症因子に難聴があるとされてきた。本研究からは、平均聴力レベルが40デシベル未満(軽度難聴もしくは正常とされるレベル)の群は40デシベル以上(中等度以上の難聴)の群より、腎機能が悪く、脳MRIにおける海馬萎縮の割合が高い結果となった。また、ストレス関連ホルモンや炎症性サイトカインによる慢性炎症が聴力レベルと正の相関を示したことから、ストレスや慢性炎症は加齢性難聴を促進させる可能性がある。さらにストレス関連性ホルモンであるコルチゾールとDHEASの比が高いほど、海馬萎縮は進行するが、難聴の程度とは直接的な相関は示さなかった。難聴と認知症は直接的には関連性は少ない。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (9 results)

All 2019 2018

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] The long-term efficacy of cochlear implantation for hearing loss in Muckel-Wells syndrome2019

    • Author(s)
      Ogawa B, Aoki M, Ohnishi H, Ohashi T, Hayashi T, Kuze B, Ito Y
    • Journal Title

      Int J Adv Otol.

      Volume: 15 Pages: 454-458

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 上半規管裂隙症候群の術後聴力経過2019

    • Author(s)
      青木光広、林 寿光、西堀丈純、久世文也、伊藤八次
    • Journal Title

      Otology Jpn

      Volume: 29 Pages: 252-257

    • NAID

      130007815582

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cerebellar ataxia with neuropathy and vestibular areflexia syndrome(CANVAS)の1例2019

    • Author(s)
      丸田恭子、青木光広、園田至人:
    • Journal Title

      臨床神経学

      Volume: 59 Pages: 27-32

    • NAID

      130007584315

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 高齢者の語音弁別能に影響する因子の検討2019

    • Author(s)
      青木光広、奥田 弘、石原宏政、小原奈津子、林 寿光、久世文也
    • Organizer
      日本聴覚医学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 高齢難聴者におけるCortisol/DHEAS比と聴力レベルの相関性2019

    • Author(s)
      青木光広、奥田 弘、石原宏政、小原奈津子、林 寿光、久世文也
    • Organizer
      日本耳鼻咽喉科学会東海地方部会
    • Related Report
      2019 Annual Research Report
  • [Presentation] メニエール病の最新トレンド2019

    • Author(s)
      青木光広
    • Organizer
      日本耳鼻臨床学会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 高齢者の語音弁別能に影響する因子の検討2019

    • Author(s)
      青木光広、石原政宏、奥田 弘、林 寿光、久世文也、伊藤八次
    • Organizer
      日本耳鼻咽喉科学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Abnormal subjective vertical perception in patients with vestibular migraine.2019

    • Author(s)
      Aoki M, Hayashi H, Kuze B.
    • Organizer
      International Symposium of Posture and Gait Research
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 高齢者の語音弁別能に影響する因子の検討2018

    • Author(s)
      青木光広
    • Organizer
      日本聴覚医学会
    • Related Report
      2018 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi