大脳構造のバリエーションと脊柱側弯症のリスク:大規模メンデルランダム化分析からの洞察
Hanjun Ma1,2, Ju Liao1, Mingxuan Liu1
1Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi, 533000, China.
Brain & spine
|February 2, 2026
まとめ
脳構造は脊柱側弯症のリスクを因果的に影響する可能性がある。左中前頭回(MFG)の灰白質量の増加は脊柱側弯症との最も強い関連を示し、潜在的な神経生物学的関連を示唆している。
科学分野:
- 神経科学
- 遺伝学
- 整形外科学
背景:
- 脊柱側弯症は、神経生物学的要因によって影響を受ける可能性のある複雑な脊椎変形です。
- 脳構造と脊柱側弯症の病因との関係は不明なままです。
研究 の 目的:
- 脳構造画像由来表現型(IDP)と脊柱側弯症の間の潜在的な因果関係を、双方向メンデルランダム化(MR)アプローチを用いて調査すること。
主な方法:
- ゲノムワイド関連研究からの遺伝的道具変数を用いた双方向MR解析が実施されました。
- 逆分散加重(IVW)解析が主要な方法であり、感度解析によって補完されました。
主要な成果:
- フォワードMR解析では、脊柱側弯症のリスク増加と関連する27の脳構造IDP、およびリスク減少と関連する37のIDPが特定されました。
- 左中前頭回(MFG)の灰白質量増加は、脊柱側弯症のリスク増加と有意に関連していました(OR = 2.238、P = 2.911 × 10⁻⁵)。
- リバースMR解析では、脊柱側弯症と55の脳構造形質の関連が示されましたが、FDR補正後はいずれも有意ではありませんでした。
結論:
- 所見は、特定の脳構造、特に左MFGが脊柱側弯症の感受性に因果的な役割を果たしている可能性を示唆しています。
- 姿勢制御における左MFGの関与は、脊柱側弯症との関連において関連がある可能性があります。
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