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2019 Fiscal Year Final Research Report

Establishment of autoimmune primary aldosteronism and development of autoantibody assay

Research Project

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Project/Area Number 17K09877
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Endocrinology
Research InstitutionKanazawa University

Principal Investigator

DEMURA MASASHI  金沢大学, 医学系, 准教授 (00507080)

Co-Investigator(Kenkyū-buntansha) 西條 清史  金沢大学, 医学系, 教授 (00178469)
Project Period (FY) 2017-04-01 – 2020-03-31
Keywords原発性アルドステロン症 / 自己抗体
Outline of Final Research Achievements

Primary aldosteronism (PA) is a common disease, with an estimated 2-4 million domestic patients (1-2% of the total population, 10-20% of hypertensive patients). Although 60-80% of PA patients have been found to be bilateral hypersecretion, there are many unclear causes of bilateral hypersecretion, and few patients can identify the cause. Considering the mechanism of autoantibody as a cause, we found a case with aldosterone-stimulating IgG in the serum of bilateral PA. Furthermore, 15 types of proteins (self-antigen candidates) recognized by these IgGs were identified. In the future, it is expected that a new pathological condition of autoimmune primary aldosteronism and the establishment of an antibody measurement method will be established by further reinforcing the data.

Free Research Field

内分泌

Academic Significance and Societal Importance of the Research Achievements

両側性原発性アルドステロン症の原因として、自己抗体によるアルドステロン分泌過剰症の存在が示唆される。これまで原因不明とされてきた多くの両側性原発性アルドステロン症の病態解明つながる成果と考えられる。
社会的意義としては、①不要な検査の回避:PA診断に必要な機能確認検査(薬剤などの負荷)や副腎静脈サンプリングを回避できる。②正確な診断できる。③簡便・簡単・低侵襲:末梢静脈採血のみで診断できる。④すべての施設で実施可能:AVS実施可能施設は極めて限定されるのに対し、採血はすべての医療機関で実施可能である。④安価:抗体検査は、機能確認検査や副腎静脈サンプリングより安価である。

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Published: 2021-02-19  

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