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Analysis of regulatory T cells in patients with alopecia areata.

Research Project

Project/Area Number 20790799
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Dermatology
Research InstitutionKyoto University

Principal Investigator

ARAKAWA Akiko  Kyoto University, 医学研究科, 助教 (80432368)

Project Period (FY) 2008 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2008: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords円形脱毛症 / 自己免疫 / IL-2 / 制御性T細胞 / FOXP3 / CD25
Research Abstract

Background Alopecia areata (AA) is a common hair loss disease, characterized by perifollicler lymphocytic infiltration. Many reports suggest that AA is a tissue-restricted autoimmune disease. FOXP3^+ Regulatory T cells (Tregs) are thought to play an important role in maintaining the peripheral immune tolerance. It is also reported that rare systemic autoimmune disease, immune dysregulation, polyendocrinopathy, enteropathy, X-linked syndrome (IPEX) is frequently associated with alopecia areata. IPEX is caused by mutation of FOXP3 or CD25.
Objectives To evaluate CD25 or FOXP3 expressing cells in patients with AA
Methods We analyzed peripheral blood mononuclear cells (PBMC) of AA patients by flowcytometry and perifollicler infiltration in AA legions by immunohistochemistry. We compared these results and the disease severity.
Result The ratio of FOXP3^+ cells and CD25^+ FOXP3^- cells cells in CD4^+ cells were significantly decreased in PBMC of alopecia areata patients. The decrease of FOXP3^+ cells was associated with more extended hair loss, prolonged disease course and active hair loss, while the decreased CD25^+ FOXP3^- cells cells were not. The ratio of FOXP3^+ cells in CD4^+ cells around hair follicles were also decreased in alopecia areata compared to dermal infiltration in psoriasis skin, which was equivalent to those in cutaneous lupus erythematousus.
Conclusion We observed that patients with alopecia areata were associated with immunedysregulation revealed by the decrease of FOXP3^+ cells and CD25^+ cells in circulating CD4^+ cells. Our study suggested close correlation between these lymphocyte phenotypes, and disease onset and severity of autoimmunity to hair follicles.

Report

(3 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report
  • Research Products

    (29 results)

All 2010 2009 2008 Other

All Journal Article (6 results) (of which Peer Reviewed: 4 results) Presentation (11 results) Book (12 results)

  • [Journal Article] 糖尿病と皮膚真菌症2010

    • Author(s)
      荒川明子
    • Journal Title

      月刊糖尿病 2

      Pages: 102-106

    • Related Report
      2009 Final Research Report
  • [Journal Article] 糖尿病と皮膚真菌症2010

    • Author(s)
      荒川明子
    • Journal Title

      月刊 糖尿病 2

      Pages: 102-106

    • Related Report
      2009 Annual Research Report
  • [Journal Article] Genotyping of Trichophyton tonsurans isolate from a Japanese boy reveals infection in the U.S.A.2009

    • Author(s)
      A.Arakawa, 他
    • Journal Title

      Clin Exp Dermatol 47

      Pages: 885-887

    • Related Report
      2009 Annual Research Report 2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] A case of atypical sporotrichosis of multifocal cutaneous ulcers.2009

    • Author(s)
      A.Arakawa, 他
    • Journal Title

      Clin Exp Dermatol 34

      Pages: 135-138

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A case of atypical sporotrichosis of multifocal cutaneous ulcers.2008

    • Author(s)
      Fujii H, A Arakawa, 他
    • Journal Title

      Clin Exp Dermatol 33(2)

      Pages: 135-138

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Anterior neural development requires Del1

    • Author(s)
      T Takai, A Arakawa, 他
    • Journal Title

      a matrix-associated protein that attenuates canonical Wnt signaling via the Ror2 pathway Development in press

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Presentation] 慢性皮膚粘膜カンジダ症患者の制御性T細胞の解析2010

    • Author(s)
      A.Arakawa, et al
    • Organizer
      沖縄感染症フォーラム
    • Year and Date
      2010-02-14
    • Related Report
      2009 Annual Research Report 2009 Final Research Report
  • [Presentation] Activation of both effector and regulatory Tcells in patient with malignant melanoma2009

    • Author(s)
      A.Arakawa, et al
    • Organizer
      日本研究皮膚科学会
    • Year and Date
      2009-12-04
    • Related Report
      2009 Annual Research Report 2009 Final Research Report
  • [Presentation] Dysregulation of both effector and regulatory FOXP3+cells in patients with malignant melanoma2009

    • Author(s)
      H Fujii, A.Arakawa, et al
    • Organizer
      日本研究皮膚科学会
    • Year and Date
      2009-12-04
    • Related Report
      2009 Final Research Report
  • [Presentation] Dysregulation of both effector and regulatory FOXP3+cells in patients with malignant melanoma2009

    • Author(s)
      H.Fujii, A.Arakawa, et al
    • Organizer
      日本研究皮膚科学会
    • Place of Presentation
      日本、福岡
    • Year and Date
      2009-12-03
    • Related Report
      2009 Annual Research Report
  • [Presentation] Dysregulation of both effector and regulatory FOXP3+cells in patients with alopecia areata2009

    • Author(s)
      A.Arakawa, et al
    • Organizer
      Aegean Conference
    • Year and Date
      2009-10-04
    • Related Report
      2009 Annual Research Report 2009 Final Research Report
  • [Presentation] Activation of both effector and regulatory Tcells in patient with malignant melanoma2009

    • Author(s)
      A.Arakawa, et al
    • Organizer
      Cancer Immunotherapy 2009
    • Place of Presentation
      アメリカ、ニューヨーク
    • Year and Date
      2009-10-01
    • Related Report
      2009 Annual Research Report
  • [Presentation] Activation of both effector and regulatory Tcells in patient with malignant melanoma2009

    • Author(s)
      A.Arakawa, et al
    • Organizer
      Cancer Immunotherapy
    • Year and Date
      2009-09-30
    • Related Report
      2009 Final Research Report
  • [Presentation] Immune reaction to candida-Insight from Chronic Mucocutaneous Candidiasis patient-2008

    • Author(s)
      荒川明子, 小野昌弘, ほか
    • Organizer
      淡路感染症フォーラム
    • Place of Presentation
      淡路島
    • Year and Date
      2008-09-11
    • Related Report
      2008 Annual Research Report
  • [Presentation] Immune reaction to candida -Insight from Chronic Mucocutaneous Candidiasis patient-2008

    • Author(s)
      荒川明子, 小野昌弘, ほか
    • Organizer
      真菌分子フォーラム
    • Place of Presentation
      千葉大学医真菌センター
    • Year and Date
      2008-08-23
    • Related Report
      2008 Annual Research Report
  • [Presentation] Analysis of Regulatory T cells in Alopecia Areata patients2008

    • Author(s)
      荒川明子, 小野昌弘, 坂口志文, 宮地良樹
    • Organizer
      国際研究皮膚科学会
    • Place of Presentation
      京都
    • Year and Date
      2008-05-14
    • Related Report
      2008 Annual Research Report
  • [Presentation] How the crosstalk between effector T cells and regulatory Tcells regulates tumor immunity in malignant melanoma2008

    • Author(s)
      谷岡未樹, 荒川明子, 小野昌弘, ほか
    • Organizer
      国際研究皮膚科学会
    • Place of Presentation
      京都
    • Year and Date
      2008-05-14
    • Related Report
      2008 Annual Research Report
  • [Book] 薬局で役に立つ皮膚科治療役FAQ2010

    • Author(s)
      荒川明子
    • Total Pages
      2
    • Publisher
      メディカルレビュー社
    • Related Report
      2009 Annual Research Report
  • [Book] WHAT'S NEW in皮膚科学2010

    • Author(s)
      荒川明子
    • Total Pages
      2
    • Publisher
      メディカルレビュー社
    • Related Report
      2009 Annual Research Report
  • [Book] スキンケア2009

    • Author(s)
      荒川明子
    • Total Pages
      120
    • Publisher
      最前線
    • Related Report
      2009 Final Research Report
  • [Book] 薬局で役に立つ皮膚科治療役2009

    • Author(s)
      荒川明子
    • Total Pages
      120
    • Publisher
      FAQ
    • Related Report
      2009 Final Research Report
  • [Book] ステロイドパルス療法の評価2009

    • Author(s)
      荒川明子
    • Total Pages
      225
    • Publisher
      皮膚科学, 2010
    • Related Report
      2009 Final Research Report
  • [Book] 日本医事新報(臨床医学の展望2008)2009

    • Author(s)
      荒川明子、宮地良樹
    • Total Pages
      1
    • Related Report
      2009 Annual Research Report
  • [Book] スキンケア最前線2009

    • Author(s)
      荒川明子
    • Total Pages
      2
    • Publisher
      メディカルレビュー社
    • Related Report
      2009 Annual Research Report
  • [Book] 脱毛 臨床医学の展望2008

    • Author(s)
      荒川明子、宮地良樹
    • Publisher
      日本医事新報
    • Related Report
      2009 Final Research Report
  • [Book] 女性型脱毛2008

    • Author(s)
      荒川明子
    • Total Pages
      133
    • Publisher
      皮膚科学, 2009
    • Related Report
      2009 Final Research Report
  • [Book] WHT'S NEW in皮膚科学2008-2009円形脱毛症パルス療法の評価2008

    • Author(s)
      荒川明子
    • Total Pages
      2
    • Publisher
      メディカルレヴュー社
    • Related Report
      2008 Annual Research Report
  • [Book] スキンケア最前線女性の脱毛-脱毛診療の最前線-2008

    • Author(s)
      荒川明子
    • Total Pages
      2
    • Publisher
      メディカルレヴュー社
    • Related Report
      2008 Annual Research Report
  • [Book] 臨床医学の展望20082008

    • Author(s)
      荒川明子
    • Total Pages
      2
    • Publisher
      日本医事新報
    • Related Report
      2008 Annual Research Report

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Published: 2008-04-01   Modified: 2016-04-21  

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