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Exploration of Antibodies Present in the Serum of Schizophrenia Patients and Examination of Their Pathological Significance

Research Project

Project/Area Number 20K16647
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 52030:Psychiatry-related
Research InstitutionKyoto University

Principal Investigator

Nakagami Yukako  京都大学, 学生総合支援機構, 助教 (60866185)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords統合失調症 / 自己抗体 / ELISA / 病的意義 / 抗PDHA1抗体 / ミトコンドリア / 抗体 / 脳画像
Outline of Research at the Start

統合失調症は幻覚や妄想が特徴的な精神疾患です。病態は未解明でありますが、複数の要因が関係するとされています。その一つに自己免疫学的要因があります。
ラットの脳を二次元電気泳動した後、統合失調症の患者さんの血液とそうでない方の血液を一次抗体に用いてウエスタンブロットを行い、得られた染色像を比較することで、患者さんの血清にのみ存在する抗体を見つけることができます。
本研究では、これまで行ってきたこの研究を引き続き行うとともに、これまでの研究で明らかになった、一部の患者さんだけが持っている抗体が疾患とどの程度関係しているのか、脳画像データ等を用いて多角的に検討を行います。

Outline of Final Research Achievements

In this study, we established an ELISA method to measure anti-PDHA1 antibodies and evaluated the antibody titers in the sera of patients with schizophrenia and healthy controls. A statistical comparison of the antibody titers between the two groups showed that the titers in the patient group were significantly higher than those in the control group. Additionally, in both groups, there were cases with high titers exceeding the mean value +2SD. Comparing the number of high-titer cases between the two groups revealed a statistically significant difference. Furthermore, an evaluation of the changes in anti-PDHA1 antibody titers and symptoms suggested that these antibodies are more likely to be trait markers associated with schizophrenia rather than state markers reflecting the condition. This indicates the potential usefulness of anti-PDHA1 antibodies as diagnostic markers for schizophrenia.

Academic Significance and Societal Importance of the Research Achievements

本研究は、一部の統合失調症患者の血清に抗PDHA1抗体が存在することを示し、この抗体が統合失調症の診断に役立つ可能性を示しました。本抗体を有する群における病態解明の鍵となると考えられます。また、この抗体が診断に使えるようになれば、早期診断や個別の治療が進むことが期待されます。さらに、本研究成果は、統合失調症の原因の一部に自己免疫異常が関与していることを支持する結果であり、今後の研究や新しい治療法の開発に活かされることが期待されます。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (30 results)

All 2024 2023 2022 2021 2020

All Journal Article (15 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 13 results,  Open Access: 7 results) Presentation (11 results) (of which Int'l Joint Research: 1 results) Book (4 results)

  • [Journal Article] Climatorexia: Should We Prepare for Addressing Extreme Personal Behavioral Changes for Climate Conservation?2024

    • Author(s)
      Sarkar Siddharth、Pinto da Costa Mariana、Nakagami Yukako、Patil Vaibhav
    • Journal Title

      Indian Journal of Psychological Medicine

      Volume: - Issue: 1 Pages: 80-82

    • DOI

      10.1177/02537176231225648

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Prognostic factors and effect modifiers for personalisation of internet-based cognitive behavioural therapy among university students with subthreshold depression: A secondary analysis of a factorial trial2023

    • Author(s)
      Toyomoto Rie、Sakata Masatsugu, et al.
    • Journal Title

      Journal of Affective Disorders

      Volume: 322 Pages: 156-162

    • DOI

      10.1016/j.jad.2022.11.024

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Three types of university students with subthreshold depression characterized by distinctive cognitive behavioral skills2023

    • Author(s)
      Shiraishi Nao、Sakata Masatsugu、Toyomoto Rie、Yoshida Kazufumi、Luo Yan、Nakagami Yukako、Tajika Aran、Suga Hidemichi、Ito Hiroshi、Sumi Michihisa、Muto Takashi、Ichikawa Hiroshi、Ikegawa Masaya、Watanabe Takafumi、Sahker Ethan、Uwatoko Teruhisa、Noma Hisashi、Horikoshi Masaru、Iwami Taku、Furukawa Toshi A.
    • Journal Title

      Cognitive Behaviour Therapy

      Volume: 53 Issue: 2 Pages: 207-219

    • DOI

      10.1080/16506073.2023.2288557

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Training in neuropsychiatry: views of early career psychiatrists from across the world2023

    • Author(s)
      Molina-Ruiz Rosa、Nakagami Yukako et. al.
    • Journal Title

      BJPsych Bulletin

      Volume: 48 Issue: 2 Pages: 1-7

    • DOI

      10.1192/bjb.2023.32

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Providing Brief Personalized Therapies for Insomnia Among Workers Using a Sleep Prompt App: Randomized Controlled Trial2022

    • Author(s)
      Shimamoto Tomonari、Furihata Ryuji、Nakagami Yukako、Tateyama Yukiko、Kobayashi Daisuke、Kiyohara Kosuke、Iwami Taku
    • Journal Title

      Journal of Medical Internet Research

      Volume: 24 Issue: 7 Pages: e36862-e36862

    • DOI

      10.2196/36862

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Validation of the Japanese Big Five Scale Short Form in a University Student Sample2022

    • Author(s)
      Toyomoto Rie、Sakata Masatsugu、Yoshida Kazufumi、Luo Yan、Nakagami Yukako、Iwami Taku、Aoki Shuntaro、Irie Tomonari、Sakano Yuji、Suga Hidemichi、Sumi Michihisa、Ichikawa Hiroshi、Watanabe Takafumi、Tajika Aran、Uwatoko Teruhisa、Sahker Ethan、Furukawa Toshi A.
    • Journal Title

      Frontiers in Psychology

      Volume: 13 Pages: 862646-862646

    • DOI

      10.3389/fpsyg.2022.862646

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Machine Learning Algorithm-Based Prediction Model for the Augmented Use of Clozapine with Electroconvulsive Therapy in Patients with Schizophrenia2022

    • Author(s)
      Oh Hong Seok、Lee Bong Ju、Lee Yu Sang、Jang Ok-Jin、Nakagami Yukako et al.
    • Journal Title

      Journal of Personalized Medicine

      Volume: 12 Issue: 6 Pages: 969-969

    • DOI

      10.3390/jpm12060969

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Components of smartphone cognitive-behavioural therapy for subthreshold depression among 1093 university students: a factorial trial2022

    • Author(s)
      Sakata Masatsugu, et al.
    • Journal Title

      Evidence Based Mental Health

      Volume: 25 Issue: e1 Pages: e18-e25

    • DOI

      10.1136/ebmental-2022-300455

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Development of a classifier for gambling disorder based on functional connections between brain regions2022

    • Author(s)
      Takeuchi Hideaki、Yahata Noriaki、Lisi Giuseppe、Tsurumi Kosuke、Yoshihara Yujiro、Kawada Ryosaku、Murao Takuro、Mizuta Hiroto、Yokomoto Tatsunori、Miyagi Takashi、Nakagami Yukako、Yoshioka Toshinori、Yoshimoto Junichiro、Kawato Mitsuo、Murai Toshiya、Morimoto Jun、Takahashi Hidehiko
    • Journal Title

      Psychiatry and Clinical Neurosciences

      Volume: - Issue: 6 Pages: 260-267

    • DOI

      10.1111/pcn.13350

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The validity and reliability of the Japanese version of RU-SATED.2022

    • Author(s)
      Ryuji Furihata, Yukiko Tateyama, Yukako Nakagami, Toshiki Akahoshi, Osamu Itani, Yoshitaka Kaneita, Daniel J. Buysse
    • Journal Title

      Sleep Medicine

      Volume: 91 Pages: 109-114

    • DOI

      10.1016/j.sleep.2022.02.014

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Network Analysis-Based Disentanglement of the Symptom Heterogeneity in Asian Patients with Schizophrenia: Findings from the Research on Asian Psychotropic Prescription Patterns for Antipsychotics.2022

    • Author(s)
      Joonho Choi, Hyung-Jun Yoon, Jae Hong Park, Yukako Nakagami, Chika Kubota, et al.
    • Journal Title

      Journal of personalized medicine

      Volume: 12(1) Issue: 1 Pages: 33-33

    • DOI

      10.3390/jpm12010033

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] A Call for a Rational Polypharmacy Policy: International Insights From Psychiatrists2021

    • Author(s)
      Yukako Nakagami, Kohei Hayakawa, Toru Horinouchi, Victor Pereira-Sanchez, Marcus P.J. Tan, Seon-Cheol Park, Yong Chon Park, Seok Woo Moon, Tae Young Choi, Ajit Avasthi, Sandeep Grover, Roy Abraham Kallivayalil, Yugesh Rai, Mohammadreza Shalbafan, Pavita Chongsuksiri, Pichet Udomratn, Samudra T. Kathriarachchi, et al.
    • Journal Title

      Psychiatry Investig

      Volume: 18(11) Issue: 11 Pages: 1058-1067

    • DOI

      10.30773/pi.2021.0169

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Factors associated with anxiety and depression in rheumatoid arthritis patients: a cross-sectional study2021

    • Author(s)
      Uda Miyabi、Hashimoto Motomu、Uozumi Ryuji、Torii Mie、Fujii Takao、Tanaka Masao、Furu Moritoshi、Ito Hiromu、Terao Chikashi、Yamamoto Wataru、Sugihara Genichi、Nakagami Yukako、Mimori Tsuneyo、Nin Kazuko
    • Journal Title

      Advances in Rheumatology

      Volume: 61 Issue: 1 Pages: 65-65

    • DOI

      10.1186/s42358-021-00223-2

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Development and validation of the Cognitive Behavioural Therapy Skills Scale among college students2021

    • Author(s)
      Sakata Masatsugu、Toyomoto Rie、Yoshida Kazufumi、Luo Yan、Nakagami Yukako、Aoki Shuntaro、Irie Tomonari、Sakano Yuji、Suga Hidemichi、Sumi Michihisa、Muto Takashi、Shiraishi Nao、Sahker Ethan、Uwatoko Teruhisa、Furukawa Toshi A
    • Journal Title

      Evidence Based Mental Health

      Volume: 24 Issue: 2 Pages: 70-76

    • DOI

      10.1136/ebmental-2020-300217

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Anti-PDHA1 antibody is detected in a subset of patients with schizophrenia2020

    • Author(s)
      Yukako Nakagami, Genichi Sugihara, Nakashima N, Hazama M, Son S, Ma S, Riki Matsumoto, Murai T, Akio Ikeda, Murakami K
    • Journal Title

      Scientific Reports

      Volume: - Issue: 1 Pages: 7906-7906

    • DOI

      10.1038/s41598-020-63776-0

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 若年性アルツハイマー型認知症患者の配偶者における気分障害治療薬の新規使用率2024

    • Author(s)
      松本光太、佐々木光太郎、深澤俊貴、中神由香子、後藤悠太、坂本祐輔 、田中佐智子 、吉田都美 、水野 佳世子 、石井美佳 、川上浩司
    • Organizer
      第94回日本衛生学会学術総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Association between “impending understanding” aspect of aberrant salience and temporal pole2023

    • Author(s)
      宮田淳、中神由香子、孫樹洛、吉原雄二郎、村井俊哉、高橋英彦
    • Organizer
      第45回日本生物学的精神学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 学生相談からみた新型コロナウイルス感染症の影響2022

    • Author(s)
      中神 由香子
    • Organizer
      第118回日本精神神経学会学術総会 シンポジウム:Post-COVIDにおける若手精神科医たちの協働と切磋 2022年6月16日
    • Related Report
      2022 Research-status Report
  • [Presentation] A call for a rational polypharmacy policy: Based on an international survey on psychiatrists’ decision-making2021

    • Author(s)
      Yukako Nakagami
    • Organizer
      Pacific Rim College of Psychiatrists Symposium 14 - Why psychiatrists tend to make a polypharmacy decision-making in daily clinical practice?
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 統合失調症と自己抗体:抗 PDHA1 抗体の紹介をかねて2021

    • Author(s)
      中神 由香子
    • Organizer
      第 62 回日本神経学会学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 統合失調症における異常salienceのmodality specificity2021

    • Author(s)
      中神由香子, 小野田悠希, Kirk Geier, 磯部昌憲, 大石直也, 河島孝彦, 久良木悠介, 小林啓, 佐々木仁, 孫樹洛, 水田弘人, 吉原雄二郎, 高橋英彦, 村井俊哉, 宮田淳
    • Organizer
      第43回日本生物学的精神医学会・第51回日本神経精神薬理学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 統合失調症患者の血清に存在する抗 PDHA1 抗体と抗体陽性者 の脳画像的特徴2020

    • Author(s)
      中神由香子, 杉原 玄一, 中島 則行, 挾間 雅章, 孫 樹洛, 馬 舒荷, 松本 理器, 村井 俊哉, 池田 昭夫, 村上 孝作
    • Organizer
      第50回日本神経精神薬理学会年会・42回日本生物学的精神医学会年会・第4回日本精神薬学会総会・学術集会 2020年8月
    • Related Report
      2020 Research-status Report
  • [Presentation] 精神症状に困っている人は精神科の門を叩く ―器質性精神障害を学ぼう―2020

    • Author(s)
      中神由香子
    • Organizer
      シンポジウム, 若手リエゾン精神科医による10年後への道標, コーディネーター&シンポジスト 中神, 由香子
    • Related Report
      2020 Research-status Report
  • [Presentation] 指定発言:委員会シンポジウム24(精神医学研究推進委員会) 当事者・家族の望む精神医学研究とは:Patient and Public Involvement2020

    • Author(s)
      中神由香子
    • Organizer
      第116回日本精神神経学会学術総会
    • Related Report
      2020 Research-status Report
  • [Presentation] ワークライフバランスを目指したキャリアパス2020

    • Author(s)
      中神由香子
    • Organizer
      第33回日本総合病院精神医学会総会
    • Related Report
      2020 Research-status Report
  • [Presentation] 「若手リエゾン精神科医と考える「対応が難しいせん妄患者への対応法」2020

    • Author(s)
      中神由香子
    • Organizer
      第33回日本総合病院精神医学会総会
    • Related Report
      2020 Research-status Report
  • [Book] エキスパートが語る てんかん診療実践ガイド2022

    • Author(s)
      高橋幸利 (分担執筆, 中神由香子, 範囲:p88-93 4.視覚・聴覚の症状:何かが見える、聞こえるなど)
    • Total Pages
      280
    • Publisher
      日本医事新報社
    • ISBN
      9784784958351
    • Related Report
      2022 Research-status Report
  • [Book] 【精神医療に関する疫学のトピック-記述疫学,リスク研究からコホート研究まで】うつ病の危険因子と予防 精神科疫学研究から見えてくるもの2021

    • Author(s)
      中神 由香子 , 降籏 隆二
    • Publisher
      (株)医学書院
    • Related Report
      2021 Research-status Report
  • [Book] メディカル・サイエンス・ダイジェスト2020

    • Author(s)
      中神由香子、範囲:統合失調症における新規抗神経抗体の探索・評価
    • Total Pages
      2
    • Publisher
      ニューサイエンス社
    • Related Report
      2020 Research-status Report
  • [Book] 地域ケアリング2020

    • Author(s)
      中神由香子、範囲:幻覚や妄想といった精神病症状と自己抗体 ―統合失調症患者を対象としたプロテオミクス解析から―
    • Total Pages
      2
    • Publisher
      北隆館
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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