Related Experiment Video
Updated: Sep 3, 2025
07:29
Real-time Analysis of Gut-brain Neural Communication: Cortex wide Calcium Dynamics in Response to Intestinal Glucose Stimulation
Published on: December 29, 2023
740
The neural basis of sugar preference.
Winston W Liu1,2,3, Diego V Bohórquez4,5,6
1Laboratory of Gut Brain Neurobiology, Duke University, Durham, NC, USA.
Nature Reviews. Neuroscience
|July 25, 2022
Summary
The gut, not just the tongue, drives sugar cravings. Specialized gut cells detect glucose, signaling the brain to influence eating behaviors and sugar consumption.
Area of Science:
- Neuroscience
- Gastroenterology
- Nutritional Science
Background:
- Sweet taste perception is traditionally linked to the tongue.
- The gut also plays a crucial role in sensing nutrients like sugar.
- Gut sensory cues guide sugar consumption even when taste is impaired.
Purpose of the Study:
- To review molecular mechanisms, cells, and neural circuits of gut sugar sensing.
- To propose a model for how gut sugar detection influences behavior.
- To highlight the gut's role in nutrient sensing and appetite regulation.
Main Methods:
- Review of existing scientific literature on gut sugar sensing.
- Analysis of molecular receptors (e.g., sodium-glucose co-transporter 1).
- Examination of cellular pathways (e.g., neuropod cells, vagal afferent neurons).
Main Results:
- Duodenal neuropod cells detect glucose via sodium-glucose co-transporter 1.
- These cells release glutamate onto vagal afferent neurons.
- Gut sensory signals are relayed to brain regions controlling feeding and reward.
Conclusions:
- The gut is a critical site for sensing ingested sugars.
- Gut-brain communication pathways mediate sugar detection and influence consumption.
- This emerging model emphasizes the gut's role in guiding appetitive decisions.
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