Related Experiment Videos
Stress and visceral perception
1Gastroenterology Unit and Laboratory of Digestive Motility, CHU Rangueil, Toulouse, France. 106521.3337@compuserve.com
Summary
Stress significantly impacts functional bowel disorders by altering visceral perception. Understanding this stress-visceral link is key for developing new treatments targeting the central nervous system.
Area of Science:
- Gastroenterology
- Neuroscience
- Psychology
Background:
- Functional bowel disorders (FBDs) often involve visceral hyperalgesia, an increased gut sensation.
- Patients with FBDs are more susceptible to daily life stressors.
- The precise relationship between stress and visceral perception remains unclear.
Purpose of the Study:
- To evaluate the relationship between stress and visceral perception in FBDs.
- To explore the mechanisms underlying stress-induced changes in gut sensation.
- To integrate findings into a model of FBD pathophysiology.
Main Methods:
- Review of studies on healthy volunteers and irritable bowel syndrome (IBS) patients.
- Analysis of rectal distension perception thresholds and rectal tone.
- Examination of animal models and neurochemical mediators.
Main Results:
- Stress can either increase (distraction) or decrease (sensitization) visceral perception thresholds.
- Stress alters rectal tone but typically not rectal compliance.
- Cognitive processes play a role in stress modulation of visceral perception.
Conclusions:
- Stress is a crucial factor in the pathophysiology of functional bowel disorders.
- Corticotropin-releasing factor and mast cell mediators are implicated.
- Targeting the central nervous system may offer new therapeutic avenues for FBDs.