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2019 Fiscal Year Final Research Report

Development of biomarkers useful for evaluation of disease activity of pediatric rheumatic diseases

Research Project

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Project/Area Number 16K19646
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Pediatrics
Research InstitutionOkayama University

Principal Investigator

Yashiro Masato  岡山大学, 大学病院, 助教 (80585943)

Project Period (FY) 2016-04-01 – 2020-03-31
Keywords酸化ストレス / バイオマーカー / 小児リウマチ性疾患 / チオレドキシン
Outline of Final Research Achievements

We established a measurement system for various oxidative stress markers (thioredoxin (TRX), High Mobility Group Box 1 (HMGB-1), d-ROMs) in pediatric rheumatic diseases.
In juvenile idiopathic arthritis (JIA) other than systemic type, serum TRX increased during the acute phase and significantly decreased during the recovery phase. TRX was associated with d-ROMs and ferritin but not with MMP3. HMGB-1 did not show a certain tendency.
TRX and d-ROMs were correlated with systemic inflammation in JIA but not with local inflammation (joint synovitis), suggesting that they may be useful biomarkers for monitoring the activity of pediatric rheumatic diseases.

Free Research Field

膠原病

Academic Significance and Societal Importance of the Research Achievements

小児リウマチ性疾患は成人リウマチ性疾患と異なり、特異的自己抗体の検出率が低く臓器症状より全身症状が強い傾向があるため、疾患活動性の正確な評価が困難である。Thioredoxin(TRX)やd-ROMs は生体内の酸化ストレスを正確かつ鋭敏に評価できるバイオマーカーである。本研究ではTRXとd-ROMsは若年性特発性関節炎(JIA)において、急性期に血清中で上昇し回復期に低下しており、局所炎症(関節滑膜炎)ではなく全身炎症と相関することが明らかになった。本研究により、小児リウマチ性疾患の活動性が正確に評価され、適切なタイミングで必要な治療を開始することが期待される。

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Published: 2021-02-19  

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