消化ホルモンの分泌における食品構造の役割を解明(Food structure plays key role in which gut hormones are released)

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2025-06-23 インペリアル・カレッジ・ロンドン(ICL)

インペリアル・カレッジ・ロンドンの研究チームは、食品の栄養成分だけでなく「物理的構造」が腸ホルモンの分泌に重要な影響を与えることを臨床試験で発見した。ヒヨコ豆を用いた粥を「細胞構造が保たれたもの」と「細胞が壊れたもの」に分けて摂取させたところ、後者は血糖値・インスリン・GIP(消化管ホルモン)の急激な上昇を引き起こし、前者はGLP‑1やPYY(食欲抑制に関与するホルモン)の穏やかで持続的な分泌を促した。この差は、食品が消化管内のどこで分解されるかに依存しており、食欲制御や2型糖尿病対策において、食品構造の設計が新たな戦略となる可能性を示している。

<関連情報>

上部消化管代謝物プロファイルは対照的な構造の食事に対する血糖および満腹感反応を制御する:パイロット研究 Upper-gastrointestinal tract metabolite profile regulates glycaemic and satiety responses to meals with contrasting structure: a pilot study

Mingzhu Cai,Shilpa Tejpal,Martina Tashkova,Peter Ryden,Natalia Perez-Moral,Shikha Saha,Isabel Garcia-Perez,Jose Ivan Serrano Contreras,Julien Wist,Elaine Holmes,Andres Bernal,Bowen Dou,Georgia Franco Becker,Gary Frost & Cathrina Edwards
Nature Metabolism  Published:20 June 2025
DOI:https://doi.org/10.1038/s42255-025-01309-7

消化ホルモンの分泌における食品構造の役割を解明(Food structure plays key role in which gut hormones are released)

Abstract

Dietary interventions to combat non-communicable diseases focus on optimizing food intake but overlook the influence of food structure. Here, we investigate how food structure influences digestion. In a randomized crossover study, ten healthy participants were fitted with nasoenteric tubes that allow simultaneous gastric and duodenal sampling, before consuming iso-nutrient chickpea meals with contrasting cellular structures. The primary outcome is gut hormone response. Secondary outcomes are intestinal content analysis, blood glucose and insulin response, subjective appetite changes and ad libitum energy intake. We show that the ‘Broken’ and ‘Intact’ cell structures of meals result in different digestive and metabolomic profiles, leading to distinct postprandial gut hormones, glycaemia and satiety responses. ‘Broken’ meal structure elicits higher glucose-dependent insulinotropic peptide, glucagon-like peptide-1 and blood glycaemia, driven by high starch digestibility and a sharp rise in gastric maltose within 30 min. ‘Intact’ meal structure produces a prolonged release of glucagon-like peptide-1 and peptide-YY, elevated duodenal amino acids and undigested starch at 120 min. This work highlights how food structure alters upper gastrointestinal nutrient-sensing hormones, providing insights into the adverse effects of modern diets on obesity and type 2 diabetes. ISRCTN registration: ISRCTN18097249.

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