南インド人におけるビタミンD欠乏,ビタミンD受容体遺伝子変異,冠動脈疾患のリスクとの関連:症例対照研究
Nandini Prakash1,2, Nagaraja Moorthy3, Pandarisamy Sundaravadivel4,5
1Department of Pathology & Faculty of Medicine, Sri Ramachandra Institute of Higher Education & Research, Chennai, Tamil Nadu, India.
The Indian journal of medical research
|August 29, 2025
まとめ
ビタミンD欠乏症 (VDD) は,南インド人の冠動脈疾患 (CAD) のリスクを5.7倍に増加させる. TaqIとFokIのような特定のビタミンD受容体 (VDR) 遺伝子変異は,性別によって異なるCADリスクと関連しています.
科学分野:
- 心血管遺伝学
- 栄養学的生化学
- 分子疫学
背景:
- ビタミンD欠乏症 (VDD) とビタミンD受容体 (VDR) の遺伝子変異は冠動脈疾患 (CAD) の病原化に関連しています.
- VDD,VDR変種とCADリスクとの関連に関する南インドの人口データは限られている.
研究 の 目的:
- 南インド人におけるVDD,VDR遺伝子変種 (ApaI,BSMI,FokI,TaqI) とCADリスクとの関連を調査する.
- VDR遺伝子変異体とVDDがCADの危険因子と感受性に及ぼす影響を調査する.
主な方法:
- 250人のCAD患者と260人の対照群を対象とした症例対照研究.
- 血清のビタミンDレベルはELISAで測定され,VDR遺伝子変異はPCR-RFLPでゲノタイプ化されました.
- 確率比 (OR),95%信頼区間 (CI),および相関を評価するための統計分析.
主要な成果:
- VDDは対照群 (63%) よりもCAD患者で有意に多く見られた.
- ビタミンD濃度<20ng/mlの個人は,CADのリスクが5. 7倍高かった.
- VDR TaqIの変異は,CADのリスクの減少と関連している (OR=0. 60). FokIの変異は,男性におけるCADのリスクの増加と関連している (OR=5. 9).
結論:
- VDDは南インド人のCADの重要な危険因子であり,リスクは5.7倍に増加します.
- VDR遺伝子変異はCADの感受性において異なる役割を果たし,FokIでは性別特異的な影響が観察されています.
- 統合された分析は,特定の遺伝子型ではなくVDDが,欠陥のある個体におけるCADリスクの主な要因であることを示唆しています.
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