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2013 Fiscal Year Research-status Report

腸内細菌測定による「腸年齢」の推定

Research Project

Project/Area Number 25670292
Research Category

Grant-in-Aid for Challenging Exploratory Research

Research InstitutionHirosaki University

Principal Investigator

中路 重之  弘前大学, 医学(系)研究科(研究院), 教授 (10192220)

Co-Investigator(Kenkyū-buntansha) 沢田 かほり  弘前大学, 医学(系)研究科(研究院), 助教 (50624889)
高橋 一平  弘前大学, 医学(系)研究科(研究院), 准教授 (70400132)
松坂 方士  弘前大学, 医学(系)研究科(研究院), 講師 (70431434)
佐藤 諭  弘前大学, 医学(系)研究科(研究院), 助手 (00725319)
Project Period (FY) 2013-04-01 – 2015-03-31
Keywords腸内細菌 / 腸年齢 / 推定式 / Clostridium / Bifidobacterium / Lactobacillales / Prevotella / 一般住民
Research Abstract

青森県弘前市岩木地区の一般成人住民933名を対象に、年齢と腸内細菌の関係を疫学的に調査・検討した。調査項目に欠損項目があるもの及び下剤の使用者、既往歴に消化器悪性疾患のある被験者を除いた798名(男性292名、女性506名)を解析対象とした。腸内常在菌の評価は、大便をサンプルとしてT-RFLP解析(長島法)を用いた。以下の結果が得られた。①加齢とともに(とくに60歳以上で顕著)、ClostridiumとBifidobacteriumは減少傾向、LactobacillalesとPrevotellaは増加傾向であった。②腸年齢の推定式(重回帰式を使用):上記4菌種を入れたモデルでは、ClostridiumとPrevotellaが不要な説明変数となり、調整済みR2値は男性で0.11、女性で0.10であった。LactobacillalesとBifidobacteriumを入れたモデルでは、2菌群共に有意な説明変数であり、調整済みR2値は男性で0.08、女性で0.07であった。LactobacillalesとPrevotellaを入れたモデルでは、2菌群共に有意な説明変数であり、調整済みR2値は男性で0.10、女性で0.09であった。したがって、これらの腸内常在菌による年齢の推定式の精度は高いとはいえず、腸内常在菌を属のレベルより下の種のレベルまで解析していくことが必要であると考えられた。以上の成績は加齢による腸内常在菌の変化が認め、とくに60歳を基準としての変化が著しいことを明らかにした。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

腸年齢に必要な、対象者の年齢、腸内細菌の測定はほぼ完了しており、腸年齢の推定式もすでに試作済みである。その意味では全体の7割は目的達成できていると考える。

Strategy for Future Research Activity

今後は、対象者数を増やしたい。今後、推定式のブラッシュアップを行う際、交絡因子を加味することによる推定式の定義付けが異なってくるものと考えられる。この点の調整につき数学の専門家と相談して進める予定である。

Expenditure Plans for the Next FY Research Funding

次年度に生活習慣の測定項目を追加するため。
血液項目、体組成、骨密度、免疫項目等の測定項目の追加を行う。

  • Research Products

    (16 results)

All 2013

All Journal Article (15 results) (of which Peer Reviewed: 15 results) Book (1 results)

  • [Journal Article] Cognitive function and number of teeth in a community-dwelling population in Japan.2013

    • Author(s)
      Saito Y, Sugawara N, Yasui-Furukori N, Takahashi I, Nakaji S, Kimura H.
    • Journal Title

      Ann Gen Psychiatry.

      Volume: 24 Pages: 20

    • DOI

      10.1186/1744-859X-12-20.

    • Peer Reviewed
  • [Journal Article] Change with increasing age in control of the lower limbs during jump-landing in adolescents: a 5-year prospective study.2013

    • Author(s)
      Sasaki S, Tsuda E, Yamamoto Y, Maeda S, Hayashi Y, Kimura Y, Sasaki E, Fujita Y, Takahashi I, Umeda T, Nakaji S, Ishibashi Y.
    • Journal Title

      J Orthop Sci.

      Volume: 18 Pages: 774-781

    • DOI

      10.1007/s00776-013-0420-3. Epub 2013 Jun 18.

    • Peer Reviewed
  • [Journal Article] Influence of obesity on blood pressure and arterial stiffness in the early teens.2013

    • Author(s)
      Kudo U, Takahashi I, Matsuzaka M, Umeda T, Kitagawa N, Kudo H, Chiba Y, Sasaki E, Nishimura M, Nakaji S.
    • Journal Title

      Obes Res Clin Pract

      Volume: 7 Pages: e211-e217

    • DOI

      10.1016/j.orcp.2011.12.005.

    • Peer Reviewed
  • [Journal Article] The influence of blood glucose on neutrophil function in individuals without diabetes.2013

    • Author(s)
      Saito Y, Takahashi I, Iwane K, Okubo N, Nishimura M, Matsuzaka M, Wada N, Miwa T, Umeda T, Nakaji S.
    • Journal Title

      Luminescence

      Volume: 28 Pages: 569-573

    • DOI

      10.1002/bio.2495.

    • Peer Reviewed
  • [Journal Article] Serum hyaluronan levels increase with the total number of osteoarthritic joints and are strongly associated with the presence of knee and finger osteoarthritis.2013

    • Author(s)
      Sasaki E, Tsuda E, Yamamoto Y, Iwasaki K, Inoue R, Takahashi I, Sawada K, Fujita H, Umeda T, Nakaji S, Ishibashi Y.
    • Journal Title

      Int Orthop

      Volume: 37 Pages: 925-930

    • DOI

      10.1007/s00264-013-1849-x.

    • Peer Reviewed
  • [Journal Article] Changes in immune functions during a peaking period in male university soccer players.2013

    • Author(s)
      Ueno Y, Umeda T, Takahashi I, Iwane K, Okubo N, Kuroiwa J, Miyazawa M, Osato R, Yoneda K, Nakaji S.
    • Journal Title

      Luminescence.

      Volume: 28 Pages: 574-581

    • DOI

      10.1002/bio.2496. Epub 2013 Feb 21.

    • Peer Reviewed
  • [Journal Article] Effect of glutamine supplementation on neutrophil function in male judoists.2013

    • Author(s)
      Sasaki E, Umeda T, Takahashi I, Arata K, Yamamoto Y, Tanabe M, Oyamada K, Hashizume E, Nakaji S.
    • Journal Title

      Luminescence

      Volume: 28 Pages: 442-449

    • DOI

      10.1002/bio.2474. Epub 2013 Jan 24.

    • Peer Reviewed
  • [Journal Article] Evaluation of locomotive disability using loco-check: a cross-sectional study in the Japanese general population.2013

    • Author(s)
      Sasaki E, Ishibashi Y, Tsuda E, Ono A, Yamamoto Y, Inoue R, Takahashi I, Umeda T, Nakaji S.
    • Journal Title

      J Orthop Sci.

      Volume: 18 Pages: 121-129

    • DOI

      10.1007/s00776-012-0329-2.

    • Peer Reviewed
  • [Journal Article] Influence of a 3-month training program on muscular damage and neutrophil function in male university freshman judoists.2013

    • Author(s)
      Koga T, Umeda T, Kojima A, Tanabe M, Yamamoto Y, Takahashi I, Iwasaki H, Iwane K, Matsuzaka M, Nakaji S.
    • Journal Title

      Luminescence.

      Volume: 28 Pages: 136-142

    • DOI

      10.1002/bio.2352.

    • Peer Reviewed
  • [Journal Article] Effects of soccer matches on neutrophil and lymphocyte functions in female university soccer players.2013

    • Author(s)
      Tsubakihara T, Umeda T, Takahashi I, Matsuzaka M, Iwane K, Tanaka M, Matsuda M, Oyamada K, Aruga R, Nakaji S.
    • Journal Title

      Luminescence.

      Volume: 28 Pages: 129-135

    • DOI

      10.1002/bio.2351.

    • Peer Reviewed
  • [Journal Article] Changes in neutrophil functions during a 10-month soccer season and their effects on the physical condition of professional Japanese soccer players.2013

    • Author(s)
      Suda Y, Umeda T, Watanebe K, Kuroiwa J, Sasaki E, Tsukamoto T, Takahashi I, Matsuzaka M, Iwane K, Nakaji S.
    • Journal Title

      Luminescence.

      Volume: 28 Pages: 121-128

    • DOI

      10.1002/bio.2350.

    • Peer Reviewed
  • [Journal Article] Effects of dehydration on immune functions after a judo practice session.2013

    • Author(s)
      Chishaki T, Umeda T, Takahashi I, Matsuzaka M, Iwane K, Matsumoto H, Ishibashi G, Ueno Y, Kashiwa N, Nakaji S.
    • Journal Title

      Luminescence.

      Volume: 28 Pages: 114-120

    • DOI

      10.1002/bio.2349.

    • Peer Reviewed
  • [Journal Article] Sleep problems in family members of long-term care users in the Japanese rural polulation.2013

    • Author(s)
      Terumi Kogawa, Miya Nishimiya, Shizuka Kurauchi, Ippei Takahashi, Noriyuki Okubo, Kaori Sawada, Shigeyuki Nakaji:
    • Journal Title

      Med Biol

      Volume: 157 Pages: 1170-1177

    • Peer Reviewed
  • [Journal Article] Thyroid ultrasound findings in children from three Japanese prefectures: aomori, yamanashi and nagasaki.2013

    • Author(s)
      Hayashida N, Imaizumi M, Shimura H, Okubo N, Asari Y, Nigawara T, Midorikawa S, Kotani K, Nakaji S, Otsuru A, Akamizu T, Kitaoka M, Suzuki S, Taniguchi N, Yamashita S, Takamura N; Investigation Committee for the Proportion of Thyroid Ultrasound Findings.
    • Journal Title

      PLoS One.

      Volume: 8 Pages: e83220

    • DOI

      10.1371/journal.pone.0083220. eCollection 2013.

    • Peer Reviewed
  • [Journal Article] Helicobacter pylori infection is associated with a decreased risk of tooth loss in healthy Japanese Men.2013

    • Author(s)
      Shimoyama T, Higuchi H, Matsuzaka M, Chinda D, Nakaji S, Fukuda S.
    • Journal Title

      Jpn J Infect Dis.

      Volume: 66 Pages: 489-492

    • Peer Reviewed
  • [Book] Dr中路が語る あおもり県民の健康2013

    • Author(s)
      中路重之.
    • Total Pages
      172
    • Publisher
      東奥日報社

URL: 

Published: 2015-05-28  

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