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Disruption of normal gastric myoelectric functioning by sleep
S Elsenbruch1, W C Orr, M J Harnish
1Thomas N. Lynn Institute for Healthcare Research, Oklahoma City, Oklahoma 73112, USA. sigrid@earthling.net
Sleep
|July 2, 1999
Summary
Sleep significantly alters gastric electrical activity, increasing dysrhythmia and slow wave instability compared to waking. These findings highlight the brain-gut axis
Area of Science:
- Gastroenterology
- Neuroscience
- Sleep Medicine
Background:
- Gastric myoelectric activity is crucial for digestion.
- Sleep is known to influence various physiological processes.
- Understanding central nervous system (CNS) regulation of gastric function is important.
Purpose of the Study:
- To assess the impact of sleep on gastric myoelectric activity in healthy individuals.
- To investigate the role of central influences in regulating normal gastric functioning.
- To analyze electrogastrogram (EGG) parameters during different sleep stages.
Main Methods:
- Recorded electrogastrograms (EGG) during polysomnographically monitored waking and sleep in a sleep laboratory.
- Studied 17 healthy volunteers.
- Analyzed EGG data using spectral analysis for pre-sleep waking, stage 2, stage 4, and REM sleep.
Main Results:
- Dominant EGG power significantly decreased during all sleep stages compared to waking.
- The percentage of 2-4cpm activity decreased during NREM sleep versus waking.
- Gastric slow wave frequency instability significantly increased during all sleep stages compared to waking.
Conclusions:
- Sleep is associated with increased gastric dysrhythmia and instability of gastric slow wave frequency.
- These findings suggest significant CNS influence on the stomach's intrinsic electrical activity.
- The study supports the concept of a brain-gut axis.