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トリグリセリド媒介経路と冠動脈疾患:101の研究の共同分析
1, Nadeem Sarwar, Manjinder S Sandhu
1Department of Public Health and Primary Care, University of Cambridge, Strangeways Research Laboratory, Wort's Causeway, Cambridge CB1 8RN, UK. nadeem.sarwar@phpc.cam.ac.uk
Lancet (London, England)
|May 11, 2010
まとめ
APOA5遺伝子の遺伝的変異はトライグリセリドのレベルに強く影響し,冠動脈疾患のリスクを高めます. これらの発見は,トリグリセリド値上昇と心臓病経路の間の因果関係を支持しています.
科学分野:
- 遺伝学 遺伝学とは
- 心血管医学は,心臓血管医学である.
- バイオケミストリー バイオケミストリー
背景:
- トリグリセリド媒介経路と冠動脈疾患 (CHD) の因果関係は不明である.
- トリグリセリド濃度を調節する遺伝子変異の調査は,因果関係を明らかにすることができます.
研究 の 目的:
- アポリポプロテインA5 (APOA5) 遺伝子の -1131T>Cプロモーターポリモルフィズムとトリグリセリド濃度および心臓病リスクとの関連性を評価する.
- 遺伝的に決定されたリスクを,大規模な前向きな研究で観察されたリスクと比較するために.
主な方法:
- APOA5遺伝子における -1131T>Cポリモルフィズム (rs662799) のゲノタイプ化について.
- 心臓病のリスクに関するケース・コントロール研究 (20,842例,35,206対照).
- 将来のコホートデータ (302,430人の参加者,12,785人のCHDイベント) と1795人のNMRスペクトロスコピーの分析と比較.
主要な成果:
- -1131T>Cポリモルフィズムは,より高いトリグリセリド濃度 (Cアレルあたり16.0%増加) と有意に関連していました.
- 各Cアレルは,前向きなデータ (トリグリセリドの16%増加にHR1.10) と一致して,CHDの確率 (OR1.18) を増加させた.
- また,HDLコレステロール値の低下,アポリポプロテインAI値の低下,アポリポプロテインB値の上昇,VLDL粒子の濃度の上昇,HDL粒子の大きさの減少との関連性も観察されました.
結論:
- この研究は,トリグリセリド媒介経路と冠動脈疾患との間の因果関係を支持する証拠を提供します.
- APOA5遺伝子の変異は,CHDの病原性におけるトリグリセリドの役割を理解するための貴重なツールとして機能しています.
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