肝臓・臓の脂肪の蓄積:心臓代謝多病症および心臓機能障害への影響
Li-You Lian1,2,3, Tianyi Xia4, Zhong-Wei Chen5
1MAFLD Research Center, Department of Hepatology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
まとめ
メタボリック機能障害に関連するステアトス性肝疾患 (MASLD) と臓ステアトーシス (PS) は,共に,心臓メタボリック多発性疾患のリスクを大幅に増加させます. この二重器官ステアトーシスは,心臓の改造を促し,これらの状態の相互関係を強調しています.
科学分野:
- 心臓病学 心臓病学
- 肝臓病理学 肝臓病理学
- メタボリック疾患
背景:
- 代謝機能障害に関連するステアトス性肝疾患 (MASLD) と臓ステアトーシス (PS) は,心臓代謝問題と関連しています.
- MASLDとPSの併用による長期的な心代謝多病症 (CMM) と心臓の改造への影響は十分に理解されていません.
研究 の 目的:
- PSとMASLDの組織学重度の関連性を調査する.
- シングルオルガン対ダブルオルガンステアトーシス (MASLDとPS) の個体におけるCMMと心臓の変化の長期的なリスクを評価する.
- 二重器官ステアトーシスに関与する潜在的な分子経路を探求する.
主な方法:
- バイオプシーで証明されたコホートにおけるPSとMASLDヒストロジーの横断分析.
- UK Biobankのコホート分析 (n=16,408) で,インシデントCMMと心臓磁気共振 (CMR) の発見を平均5.6年の追跡期間で評価した.
- 分子経路を特定するための探査プロテオミックプロファイリング.
主要な成果:
- PSは,ステアトーシス,炎症,および線維症を含む,より重度のMASLD組織学と相関しています.
- MASLDとPSの併存は,新たに発症したCMMのリスクを増加させた (HR=2.013).
- 双臓ステアトーシスは,左心室の質量増加と心臓機能障害に関連しており,タンパク質解析では,リゾソームとグリコサミノグリカン分解経路の調節が向上していることが明らかになった.
結論:
- 臓ステアトーシスは,より重度の肝臓疾患ヒストロジーと関連しています.
- MASLDとPSを併用すると,心代謝性多発性疾患と心臓の改造のリスクが著しく上昇します.
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