トリグリセリド・グルコース指数と体量指数と糖尿病および併発性高血圧患者の5年間の全因死亡率との関係: 2つの前向きなコホート研究からの証拠
Yilu Liu1, Hongzhao You1,2, Yingxuan Zhu3
1Fuwai Hospital and National Centre for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
Journal of clinical & translational endocrinology
|September 2, 2025
まとめ
トリグリセリド・グルコース指数 (TyG) は,高血圧の糖尿病患者の体量指数 (BMI) と死亡率との関連を有意に媒介する. BMIとTyGを組み合わせることで リスクの階層化が進み,患者の治療結果が改善されます.
科学分野:
- 心臓病科
- 内分泌学
- 公衆衛生
背景:
- 糖尿病と高血圧は世界的な健康問題です.
- 体重指数 (BMI) で表される肥満は,心臓血管疾患と死亡率の主な危険因子です.
- インスリン抵抗性は,しばしばトリグリセリド・グルコース指数 (TyG) によって評価され,代謝障害において重要な役割を果たします.
研究 の 目的:
- 5年間の全原因死亡率に関するボディマス指数 (BMI) とトリグリセリド・グルコース指数 (TyG) の複雑な関係を調査する.
- 糖尿病と高血圧の患者におけるBMIと死亡率との関連におけるTyGの作用を決定する.
- すべての原因による死亡リスクの階層化のためのBMIとTyGの組み合わせた予測値を評価する.
主な方法:
- 米国 NHANES (1999年−2014年) の患者5,728人,中国 Kailuan (2005年−2010年) の患者3,456人の分析.
- TyG指数の計算は,以下の式を用いて行われます: log (素食トリグリセリド * 素食グルコース).
- 生存率分析とメディエーション分析を含む統計分析で,BMIとTyGが死亡率に与える影響を評価する.
主要な成果:
- 5年間の全原因死亡率は8. 4% (NHANES) と9. 2% (Kailuan) であった.
- TyGはBMIと全因死亡率との関連を38. 4% (NHANES) と41. 6% (Kailuan) に媒介した.
- TyGとBMIの間で,特にBMIが高い個体で,高リスクのサブグループが特定された.
結論:
- 糖尿病と高血圧の患者における全因死亡率に対するBMIの影響を,TyGが有意に媒介する.
- BMIとTyGを組み合わせた評価は,死亡リスクの階層化に役立つツールです.
- 体重減少を狙った介入は,インスリン抵抗性に関連した全因死亡リスクを軽減することができます.
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