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Updated: Apr 12, 2026
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Real-time Analysis of Gut-brain Neural Communication: Cortex wide Calcium Dynamics in Response to Intestinal Glucose Stimulation
Published on: December 29, 2023
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Intestinal nutrient sensing and blood glucose control.
Tamara Zietek1, Hannelore Daniel
1ZIEL - Institute for Food & Health, Technische Universität München, Freising, Germany.
Summary
Intestinal nutrient sensors detect food and release gut hormones like glucose-dependent insulinotropic polypeptide and glucagon-like peptide 1. Targeting these nutrient-sensing pathways offers new strategies for metabolic control and type 2 diabetes treatment.
Area of Science:
- Endocrinology
- Gastroenterology
- Metabolic Science
Background:
- Enteroendocrine cells possess nutrient-specific sensors that trigger gut hormone release.
- Incretins, such as glucose-dependent insulinotropic polypeptide and glucagon-like peptide 1, are crucial for glucose homeostasis, metabolic control, and beta-cell function.
Purpose of the Study:
- To review intestinal nutrient-sensing mechanisms.
- To explore the role of these mechanisms in health and disease, particularly in metabolic control and type 2 diabetes.
Main Methods:
- Review of existing literature on nutrient sensing in the intestine.
- Identification of specific nutrient sensors and their associated signaling pathways.
- Analysis of the impact of nutrient sensing on incretin release and glucose metabolism.
Main Results:
- All macronutrients stimulate incretin release via specific sensors; glucose transporters act as primary sensors.
- Transporters function as nutrient-sensing 'transceptors,' a novel concept beyond G-protein coupled receptors.
- Specific G-protein coupled receptors (GPR40, GPR120, GPR41, GPR43) sense fatty acids, and their agonists enhance glucagon-like peptide 1 output.
- Bariatric surgery demonstrates the significant role of intestinal nutrient sensing in metabolic control.
Conclusions:
- Targeting intestinal nutrient-sensing pathways through diet or pharmacology shows promise for treating type 2 diabetes.
- Further understanding of nutrient sensing can illuminate the intestine's role in endocrine, neuronal, and metabolic regulation.
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