The gut as a neurological organ

Area of Science:

• Neurogastroenterology and gut-brain axis research.

Background:

• The gastrointestinal tract is regulated by a complex network of five neuronal classes.
• The enteric nervous system (ENS), or "brain in the gut," autonomously controls digestive functions.
• Extrinsic afferents relay vital information on homeostasis and sensation to the central nervous system.

Purpose of the Study:

• To highlight the critical role of the nervous system in regulating digestive functions.
• To underscore the significance of the enteric nervous system (ENS) in gut physiology.
• To identify the enteric nervous system (ENS) and extrinsic afferents as therapeutic targets for gut disorders.

Main Methods:

• Review of the neuroanatomical and functional organization of the gastrointestinal nervous system.
• Analysis of the regulatory roles of intrinsic enteric neurons and extrinsic afferents.
• Examination of the link between gastrointestinal innervation dysfunction and disease.

Main Results:

• The nervous system, particularly the ENS, is central to regulating virtually all digestive activities.
• The ENS operates independently, managing complex gastrointestinal behaviors.
• Dysfunction in the ENS and gut innervation is implicated in numerous gut diseases, including functional bowel disorders.

Conclusions:

• The gut's intricate innervation network, especially the ENS, is crucial for digestive health.
• Therapeutic strategies targeting the ENS and extrinsic afferents offer promise for treating gut diseases and associated pain.