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Relationship between red complex of periodontal bacteria and pathogenesis of IgA nephropathy and development of new therapy for IgA nephropathy based on this relationship

Research Project

Project/Area Number 21K08242
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53040:Nephrology-related
Research InstitutionHyogo Medical University

Principal Investigator

Nagasawa Yasuyuki  兵庫医科大学, 医学部, 准教授 (10379167)

Co-Investigator(Kenkyū-buntansha) 仲野 道代 (松本道代)  岡山大学, 医歯薬学域, 教授 (30359848)
野村 良太  広島大学, 医系科学研究科(歯), 教授 (90437385)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsIgA nephropatjy / periodontal bacteria / Porphyromonas gingivalis / red complex / oral bacteria / IgA腎症 / 歯周病菌 / 慢性腎臓病 / 齲蝕菌 / レッドコンプレックス / P.Gingivalis
Outline of Research at the Start

(a)扁桃における歯周病菌のレッドコンプレックスおよびオレンジコンプレックス網羅的な検討
(b)扁桃の歯周病菌の存在と口腔内の存在の一致率の検討
(c)扁桃で有意に検出された菌における繊毛などの病原性のより強いもの存在についての検討 P.Gingivalisについては、繊毛のFimタイプが6種類あり、その種類によって病原性が異なることが知られている。この繊毛のサブタイプについて検討を進める。この繊毛のタイプ決定については大阪大学歯学部の協力をえる
(d)扁桃に有意に検出された歯周病菌を投与することで歯周病菌感染によるIgA腎症発症モデルマウスの樹立

Outline of Final Research Achievements

Red complex of periodontal bacteria in tonsils with IgA nephropathy patients were significantly more highly detected that in tonsil with chronic tonsilitis patients. Continuous nasal administration of Porphyromonas gingivalis, which is one of red complex periodontal bacteria could cause IgA nephropathy like kidney lesion in mice. We reported these results as original article(Nagasawa Y, et al Int J Mol Sci. 2021). And also considerable mechanisms how oral bacteria such as periodontal bacteria and cariogenic bacteria could cause the IgA nephropathy like kidney lesion were also reported as review article (Nagasawa Y, Misaki T, Ito S, Naka S, Wato K, Nomura R, Matsumoto-Nakano M, Nakano K. Title IgA Nephropathy and Oral Bacterial Species Related to Dental Caries and Periodontitis. Int J Mol Sci. 2022 Jan 10;23(2):725). These results indicate that oral healthcare might improve kidney prognosis in IgA nephropathy patients.

Academic Significance and Societal Importance of the Research Achievements

IgA腎症は、透析導入の2番目に多い原疾患である慢性糸球体腎炎のおよそ半分を占めている。その発症が30歳代を中心とするため、透析医療を含めて本人のQOLの低下と社会的医療費の負担は大きい。この疾患の発症進展に病原性の高い歯周病菌が関与していることが明らかになり、このことは社会的な意義も大きい。その点が評価され、一連の研究結果は兵庫医科大学のホームページで紹介され、され読売新聞の科学欄でも紹介された。また、この結果はオーラルケアがIgA腎症の予後を良くする可能性を示唆しており、従来にない視点での治療介入の可能性を明らかにしている。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (17 results)

All 2024 2023 2022 2021

All Journal Article (14 results) (of which Peer Reviewed: 14 results,  Open Access: 12 results) Presentation (3 results) (of which Invited: 3 results)

  • [Journal Article] Cigarette smoking and progression of kidney dysfunction: a longitudinal cohort study2024

    • Author(s)
      Matsumoto A, Nagasawa Y, Yamamoto R, Shinzawa M, Yamazaki H, Shojima K, Shinmura K, Isaka Y, Iseki K, Yamagata K, Narita I, Konta T, Kondo M, Tsuruya K, Kasahara M, Shibagaki Y, Fujimoto S, Asahi K, Watanabe T, Moriyama T
    • Journal Title

      Clinical and Experimental Nephrology

      Volume: - Issue: 8 Pages: 793-802

    • DOI

      10.1007/s10157-024-02487-6

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Factors contributing to subjective well‐being and supporting successful aging among rural Japanese community‐dwelling older adults: A cross‐sectional and longitudinal study2024

    • Author(s)
      Shojima Kensaku、Mori Takara、Wada Yosuke、Kusunoki Hiroshi、Tamaki Kayoko、Matsuzawa Ryota、Nagai Koutatsu、Goto Masashi、Tabuchi Takahiro、Nagasawa Yasuyuki、Shinmura Ken
    • Journal Title

      Geriatrics & Gerontology International

      Volume: 24 Issue: S1 Pages: 311-319

    • DOI

      10.1111/ggi.14835

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Simultaneous Presence of Campylobacter rectus and Cnm-Positive Streptococcus mutans in the Oral Cavity Is Associated with Renal Dysfunction in IgA Nephropathy Patients: 5-Year Follow-Up Analysis.2023

    • Author(s)
      Misaki T, Naka S, Nagasawa Y, Matsuoka D, Ito S, Nomura R, Matsumoto-Nakano M, Nakano K
    • Journal Title

      Nephron

      Volume: 13 Issue: 3-4 Pages: 134-143

    • DOI

      10.1159/000525511

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Association Between Timed Up-and-Go Test and Future Changes in the Frailty Status in a Longitudinal Study of Japanese Community-Dwelling Older Adults2023

    • Author(s)
      Wada Y, Shojima K, Tamaki K, Mori T, Kusunoki H, Onishi M, Tsuji S, Matsuzawa R, Nagai K, Sano K, Hashimoto K, Goto M, Nagasawa Y, Shinmura K.
    • Journal Title

      Clin Interv Aging

      Volume: 18 Pages: 1191-1200

    • DOI

      10.2147/cia.s413513

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Porphyromonas gingivalis infection in the oral cavity is associated with elevated galactose-deficient IgA1 and increased nephritis severity in IgA nephropathy2023

    • Author(s)
      Ito Seigo、Misaki Taro、Nagasawa Yasuyuki、Nomura Ryota、Naka Shuhei、Fukunaga Akiko、Matsuoka Daiki、Matayoshi Saaya、Matsumoto-Nakano Michiyo、Nakano Kazuhiko
    • Journal Title

      Clinical and Experimental Nephrology

      Volume: 28 Issue: 3 Pages: 192-200

    • DOI

      10.1007/s10157-023-02411-4

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Utility of ultrasonography for predicting indications for tolvaptan in patients with autosomal dominant polycystic kidney disease2023

    • Author(s)
      Iijima H, Tada T, Hashimoto M, Nishimura T, Kiriki M, Higashiura A, Iwasaki A, Honda M, Nagasawa Y, Yamakado K
    • Journal Title

      J Med Ultrason

      Volume: 50(1) Issue: 1 Pages: 81-87

    • DOI

      10.1007/s10396-022-01261-z

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] cnm-positive Streptococcus mutans is associated with galactose-deficient IgA in patients with IgA nephropathy2023

    • Author(s)
      Misaki T, Naka S, Suzuki H, Lee M, Aoki R, Nagasawa Y, Matsuoka D, Ito S, Nomura R, Matsumoto-Nakano M, Suzuki Y, Nakano K.
    • Journal Title

      Plos One

      Volume: - Issue: 3 Pages: 0-0

    • DOI

      10.1371/journal.pone.0282367

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Appropriate exercise might have some benefits for both mothers and their babies via epigenesis.2023

    • Author(s)
      Nagasawa Y, Yamazaki H, Shojima K, Shinmura K.
    • Journal Title

      Hypertension Research

      Volume: - Issue: 3 Pages: 762-764

    • DOI

      10.1038/s41440-022-01166-x

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Distribution of periodontopathic bacterial species between saliva and tonsils2022

    • Author(s)
      Nomura Ryota, Nagasawa Yasuyuki, Misaki Taro, Ito Seigo, Naka Shuhei、Okunaka Mieko、Watanabe Maiko, Tsuzuki Kenzo, Matsumoto-Nakano Michiyo, Nakano Kazuhiko
    • Journal Title

      Odontology

      Volume: 10 Issue: 3 Pages: 719-72

    • DOI

      10.1007/s10266-022-00776-8

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cnm of Streptococcus mutans is important for cell surface structure and membrane permeability2022

    • Author(s)
      Naka S, Matsuoka D, Goto K, Misaki T, Nagasawa Y, Ito S, Nomura R, Nakano K, Matsumoto-Nakano M
    • Journal Title

      Front Cell Infect Microbiol.

      Volume: - Pages: 994014-994014

    • DOI

      10.3389/fcimb.2022.994014

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] IgA Nephropathy and Oral Bacterial Species Related to Dental Caries and Periodontitis.2022

    • Author(s)
      Nagasawa Y, Misaki T, Ito S, Naka S, Wato K, Nomura R, Matsumoto-Nakano M, Nakano K.
    • Journal Title

      Int J Mol Sci.

      Volume: Jan 10;23(2) Issue: 2 Pages: 725-725

    • DOI

      10.3390/ijms23020725

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Relationship between IgA Nephropathy and Porphyromonas gingivalis; Red Complex of Periodontopathic Bacterial Species.2021

    • Author(s)
      Nagasawa Y, Nomura R, Misaki T, Ito S, Naka S, Wato K, Okunaka M, Watabe M, Fushimi K, Tsuzuki K, Matsumoto-Nakano M, Nakano K.
    • Journal Title

      Int J Mol Sci.

      Volume: Dec 1;22(23) Issue: 23 Pages: 13022-13022

    • DOI

      10.3390/ijms222313022

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Genetic deficiency of adipose triglyceride lipase is associated with a novel type of podocytopathy2021

    • Author(s)
      Nagasawa Y, Okumura T, Hara Y, Kondo T, Hasegawa M, Ikeda Y, Murohara T, Hirano KI
    • Journal Title

      KI reports,

      Volume: 6 Issue: 10 Pages: 2722-2725

    • DOI

      10.1016/j.ekir.2021.07.013

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Melatonin and gestational hypertension2021

    • Author(s)
      Nagasawa Y, Nanami M, Takahiro Kuragano T, Ishihara M.
    • Journal Title

      Hyper Res

      Volume: 44 Issue: 11 Pages: 1540-1542

    • DOI

      10.1038/s41440-021-00722-1

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] ラットおよびマウスを用いた口腔細菌の IgA 腎症発症への影響 の検討2023

    • Author(s)
      13.野村良太 ,長澤康行 ,三﨑太郎 ,仲周平 ,仲野道代 ,仲野和彦
    • Organizer
      第66回日本腎臓学会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Considerable mechanisms of kidney lesions associated with Triglyceride deposit cardiomyovasculopathy (TGCV)2023

    • Author(s)
      Nagasawa-Y
    • Organizer
      International Symposium on Triglyceride/Neutral Lipid and Rare Diseases
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] International comparison, East vs West2023

    • Author(s)
      Nagaswa-Y
    • Organizer
      17th International Symposium on IgA Nephropathy
    • Related Report
      2023 Annual Research Report
    • Invited

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Published: 2021-04-28   Modified: 2025-01-30  

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