原発性シェーグレン病における臓器特異的自己免疫疾患
A Garcia-Torralba1, G Hernández-Molina1
1Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico.
Scandinavian journal of rheumatology
|January 23, 2026
まとめ
原発性シェーグレン病(SjD)患者の約3分の1が臓器特異的自己免疫疾患(OSA)を経験しており、最も一般的なのは内分泌系の問題である。OSAはSjDの前、後、または同時に発生する可能性があるが、疾患活動性を高めるものではない。
科学分野:
- リウマチ学
- 免疫学
- 内分泌学
背景:
- 原発性シェーグレン病(SjD)は慢性自己免疫疾患である。
- 臓器特異的自己免疫疾患(OSA)は、免疫系が特定の臓器を攻撃することである。
- SjD患者におけるOSAの有病率と影響については、さらなる調査が必要である。
研究 の 目的:
- 原発性SjD患者におけるOSAの頻度を決定すること。
- SjD患者におけるOSAと臨床的・血清学的因子との関連を調査すること。
- OSAとSjDの疾患活動性との関係を評価すること。
主な方法:
- 328人のSjD患者(ACR/EULAR基準)のコホートを分析した。
- 様々なタイプのOSA(消化器系、血液系、神経系、皮膚系、内分泌系)を記録した。
- 人口統計学的データ、臨床データ、およびEULARシェーグレン症候群疾患活動性指数(ESSDAI)スコアを収集した。
主要な成果:
- SjD患者の37.9%にOSAが同定され、自己免疫性甲状腺炎が最も頻度が高かった。
- OSAはSjDに先行して30.3%、SjDに後続して50.8%、同時に発生して18.8%であった。
- ロジスティック回帰分析により、OSAと抗Ro/SSA抗体、罹病期間、メトトレキサートおよびアザチオプリンの使用との関連が示唆された。
結論:
- 原発性SjD患者の3分の1がOSAを示し、主に内分泌系に関連していた。
- OSAはSjD診断のいずれの時点でも発現する可能性があり、疾患活動性の増加とは相関しない。
- SjD患者の併存疾患管理のためには、OSAのスクリーニングが重要である。
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