G6PC2遺伝子内のポリモルフィズムが,断食時の血糖値と関連している
Nabila Bouatia-Naji1, Ghislain Rocheleau, Leentje Van Lommel
1CNRS UMR 8090 Institute of Biology, Pasteur Institute of Lille and Lille 2 Droit et Santé University, 59019 Lille, France.
Science (New York, N.Y.)
|May 3, 2008
まとめ
G6PC2遺伝子の遺伝子変異 (rs560887) は,断食時の血糖値と臓β細胞機能に影響する. この発見は,グルコース調節の変動を説明する可能性があるが,2型糖尿病のリスクと関連していない.
科学分野:
- 遺伝学 遺伝学とは
- メタボリズムは
- エンドクリノロジー エンドクリノロジー
背景:
- 正常範囲内の断食プラズマグルコース (FPG) レベルは,依然として死亡リスクの増加を示す可能性があります.
- FPGの個体間の変動は,遺伝的要因を特定する必要があります.
研究 の 目的:
- 断食プラズマグルコース (FPG) の個体間変動の遺伝的決定因子を特定する.
- ノルモグリセミックな個体におけるFPGレベルと単核酸多形態 (SNPs) の関連性を調査する.
主な方法:
- ゲノム・ワイド・アソシエーション・スタディ (GWAS) は,ノルモグリセミックの654人の参加者に対して392,935個のSNPをテストした.
- 9353人の参加者の独立したコホートで,トップ関連SNP (rs560887) の複製.
- SNP rs560887のFPGと臓β細胞機能 (Homa-B) との関連性の分析.
主要な成果:
- G6PC2遺伝子にあるSNP rs560887は,FPGと強い関連性を示した (P = 4 x 10−23).
- このSNPは,臓のβ細胞機能とも有意に関連していた (P = 3 x 10−13).
- SNP rs560887と2型糖尿病のリスクとの関連は見つかりませんでした.
結論:
- IGRPをコードするG6PC2遺伝子は,断食時の血糖値の調節に役割を果たしています.
- SNP rs560887は,臓のβ細胞におけるグルコース刺激によるインスリン分泌を調節することにより,FPGに影響を与える可能性があります.
- G6PC2の機能に関するさらなる研究は,グルコースホメオスタシスに関する洞察を提供することができます.
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