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The impact of anti-N-Methyl-D-Aspartate receptor antibodies on the clinical prognosis of major depressive disorder

Research Project

Project/Area Number 17K16377
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Psychiatric science
Research InstitutionOkayama University

Principal Investigator

SAKAMOTO SHINJI  岡山大学, 大学病院, 助教 (30747093)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords抗NMDAR抗体 / 脳炎 / 気分障害 / うつ病 / グルタミン酸 / グルタミン酸神経伝達 / 免疫療法 / 抗腫瘍療法 / NMDA受容体抗体 / 双極性障害 / 神経突起伸長 / 中心体機能障害 / 生体分子 / 免疫学 / 遺伝子
Outline of Final Research Achievements

Anti-N-methyl D-aspartate receptor (NMDAR) encephalitis is increasingly recognized as one part of etiology about major depressive disorders, but there are few studies about the relationships between anti-NMDAR encephalitis and major depressive disorder. We firstly tested anti-NMDAR antibody in serum and cerebrospinal fluid of patients with mood disorder including major depressive disorder. Four of 64 patients (6.3%) had anti-NMDAR antibodies in cerebrospinal fluid.There was the weak correlation between titer of anti-NMDAR antibody in cerebrospinal fluid and severity of patients. We found that some patients who had been initially diagnosed with mood disorder had anti-NMDAR antibodies occasionally, because of the common pathophysiology as a dysfunction of the glutamatergic system.

Academic Significance and Societal Importance of the Research Achievements

この研究により、うつ病という大きな社会的損失をもたらす精神疾患に対し、自己免疫という観点から生物学的基盤の解明と、それに基づいた革新的治療をもたらす可能性が示唆された。たとえば、抗NMDAR抗体脳炎に対して有効な抗炎症療法、抗免疫療法、抗腫瘍療法がうつ病患者に対しても有効となる可能性も考えられる。また、向精神薬や電気痙攣療法に反応不良な難治性うつ病患者においても抗NMDAR抗体を同定することで、新たな治療選択肢が増える可能性もある。以上のことから本研究は、うつ病の病態解明のみならず、うつ病患者に対する新たな治療法開拓の可能性を持った、社会的意義の大きな研究であると考える。

Report

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

    (2 results)

All 2018

All Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] 精神疾患における抗NMDA受容体抗体保有率の検討2018

    • Author(s)
      酒本真次
    • Organizer
      第114回日本精神神経学会学術総会
    • Related Report
      2018 Annual Research Report 2017 Research-status Report
  • [Presentation] The relationship of N-methyl-D-aspartate receptor antibody and psychiatric disorders2018

    • Author(s)
      河合弘樹
    • Organizer
      The International College of Neuropsychopharmacology (CINP) 2018 Vienna World Congress
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2020-03-30  

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