Time-restricted feeding of rapidly digested starches causes stronger entrainment of the liver clock in PER2::LUCIFERASE knock-in mice

Misa Itokawa, Akiko Hirao, Hiroki Nagahama, Makiko Otsuka, Teiji Ohtsu, Naoki Furutani, Kazuko Hirao, Tamao Hatta, Shigenobu Shibata*

*この研究の対応する著者

研究成果: Article査読

24 被引用数 (Scopus)

抄録

Restricting feeding to daytime can entrain circadian clocks in peripheral organs of rodents, and nutrients that rapidly increase the blood glucose level are suitable for inducing entrainment. However, dietetic issues, for example, whether or not the diet comprises heated food, have not been fully explored. We therefore hypothesized that rapidly digested starch causes stronger entrainment than slowly digested starch. The entrainment ability of the liver clock in PER2::LUCIFERASE knock-in mice, blood glucose levels, insulin levels, and acute changes in liver clock gene expression were compared between a β-starch (native)-substituted AIN-93M standard diet and an α-starch (gelatinized)-substituted diet. β-Corn and β-rice starch induced larger phase delays of the liver clock, larger blood glucose increases, and higher Per2 gene expression in the liver compared with β-potato starch. Starch granule size, as examined by electron microscopy, was larger for β-potato starch than for β-corn or β-rice starch. After heating, we obtained gelatinized α-potato, α-corn, and α-rice starch, which showed destruction of the crystal structure and a high level of gelatinization. No difference in the increase of blood glucose or insulin levels was observed between β-corn and α-corn starch, or between β-rice and α-rice starch. In contrast, α-potato starch caused higher levels of glucose and insulin compared with β-potato starch. An α-potato starch-substituted diet induced larger phase delays of the liver clock than did β-potato starch. Therefore, rapidly digested starch is appropriate for peripheral clock entrainment. Dietetic issues (heated vs unheated) are important when applying basic mouse data to humans.

本文言語English
ページ(範囲)109-119
ページ数11
ジャーナルNutrition Research
33
2
DOI
出版ステータスPublished - 2013 2

ASJC Scopus subject areas

  • 内分泌学、糖尿病および代謝内科学
  • 内分泌学
  • 栄養および糖尿病

フィンガープリント

「Time-restricted feeding of rapidly digested starches causes stronger entrainment of the liver clock in PER2::LUCIFERASE knock-in mice」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル