デュシェンヌ筋縮症における骨のミネラル密度の自然史を調査する:体系的な文献レビュー
Christian De Ford1, Maitea Guridi2, Yingjia Chen3
1F. Hoffmann-La Roche Ltd, Basel, Switzerland. christian.de_ford@roche.com.
まとめ
骨のミネラル密度 (BMD) は,年齢とグルココルチコイド (GC) の使用によってデュシェンヌ筋縮症 (DMD) で減少します. これは骨の強さに影響を及ぼし,DMDの子供の骨折のリスクを高めます.
科学分野:
- 整形外科
- 小児科
- 遺伝学
背景:
- デュシェンヌ筋縮症 (DMD) は骨粗鬆症と骨折に関連しています.
- これらの合併症は,進行性筋症,減量,およびグルココルチコイド (GC) 治療の骨毒性によるものです.
研究 の 目的:
- 骨のミネラル密度 (BMD) の自然経過を体系的に検討する.
- DMDの患者に BMDの進行に関連した要因を特定する.
主な方法:
- PubMedとEmbase (2000年−2023年) を用いて体系的な文献レビューを実施した.
- 研究は,GC治療を受けている5歳から15歳のDMD患者に焦点を当てた.
- 一般化された線形混合モデル (GLMM) は,骨の健康と臨床的要因の関係を分析した.
主要な成果:
- 腰椎 (LS) BMDのZスコアは年齢とともに低下しました (- 0. 25SDS/年) そしてGCの持続時間 (- 0. 24SDS/年).
- 頭を除いた全身 (TBLH) と横側遠足 (LDF) のBMDのZスコアも年齢とともに低下した.
- LS aBMD Zスコアの1SDS減少ごとに骨折のリスクは21%増加しました.
結論:
- 臨床試験の設計には,DMDにおけるBMDの軌道を理解することが重要です.
- 年齢とGC治療の期間は,DMDにおけるBMDの減少と有意に関連しています.
- GCでDMD患者のZスコア経路を調査した最初のSLRです.
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