# Decoding Gastric Reflexes: The Role of Mechanosensitive Enteric Neurons in Stomach Motility

## TL;DR

This paper reviews how mechanosensitive neurons in the guinea pig stomach control gastric motility and reflexes, with implications for human digestion and treatment.

## Contribution

The paper provides a comprehensive review of mechanosensitive enteric neurons in gastric motility, emphasizing their role in reflex pathways and potential therapeutic applications.

## Key findings

- Mechanosensitive enteric neurons regulate gastric motility through cholinergic and nitrergic pathways.
- The guinea pig stomach model is valuable for studying human gastric physiology due to structural and functional similarities.
- Future research is needed to understand mechanosensitive pathways and their receptors for therapeutic development.

## Abstract

This review focuses on mechanosensitive enteric neurons (MEN) in the guinea pig stomach and their roles in gastric motor reflex pathways. The guinea pig model is advantageous for studying gastric physiology, as its stomach structure and function closely resemble those of humans. Gastric motility involves distinct functional regions: the fundus and proximal corpus act as reservoirs, while the distal corpus and antrum handle food mixing and propulsion. Mechanosensitivity in both gastric cholinergic and nitrergic enteric neurons plays a critical role in adapting muscle activity in response to gastric content volume. These neurons enable reflex circuits involved in the accommodation reflex, with cholinergic excitatory and nitrergic inhibitory pathways promoting relaxation. This review summarizes the anatomical, functional, and neurochemical characteristics of MEN across gastric regions, their direct and indirect interactions with smooth muscle, and the role of distinct neurotransmitters in modulating gastric motility. The need for future studies on mechanosensitive pathways and involved neuronal receptors is highlighted to enhance our understanding, finally aiding therapeutic development.