Regulation of sugar and lipid metabolism after the intake of high-sugar diet

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K00827
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Eating habits
• Research Institution: University of Shizuoka
• Principal Investigator: Morita Akihito 静岡県立大学, 食品栄養科学部, 助教 (40239653)
• Co-Investigator(Kenkyū-buntansha): 三浦 進司 静岡県立大学, 食品栄養科学部, 教授 (10342932)
• Research Collaborator: SATO TOMOKI 静岡県立大学, 大学院・薬食生命科学総合学府 ; SENO NANAMI 静岡県立大学, 大学院・薬食生命科学総合学府 ; INOUE MIZUKI 静岡県立大学, 大学院・薬食生命科学総合学府
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 脂質代謝 / 糖質代謝 / 糖質過剰摂取 / phosphatidylcholine / バイオマーカー / GPD1

Outline of Final Research Achievements

We analyze the regulation of sugar and lipid metabolism after intake of high sugar diet. We did not prove the hypothesis that the increased hepatic store of glycogen initiated the biosynthesis of fatty acid after fasting and refeeding. Glycerol 3-phosphate dehydrogenase 1 (GPD1) catalyzes the conversion process between sugar and lipid metabolism. In GPD1 null mouse, contribution of lipid oxidation as a fuel source for exercise is increased, and gluconeogenesis from glycogenic amino acids is also increased after fasting. Finally, we demonstrated that the blood level of any phosphatidylcholine (PC), such as PC(16:0/16:1) and PC(16:0/18:1), was increased after intake of high sugar diet, suggesting that these two PCs would be good biomarkers for intake of high sugar diet.

Free Research Field

栄養生化学