Related Experiment Videos
Functional role for cannabinoids in respiratory stability during sleep.
David W Carley1, Sasa Paviovic, Marika Janelidze
1Department of Medicine, University of Illinois at Chicago, 60612, USA. dwcarley@uic.edu
Sleep
|June 20, 2002
Summary
Cannabinoids like delta-9-THC and oleamide significantly reduce sleep apnea by stabilizing respiration. These compounds also block serotonin
Area of Science:
- Neuroscience
- Sleep Medicine
- Pharmacology
Background:
- Serotonin exacerbates sleep apnea via the peripheral nervous system.
- Cannabinoid receptor agonists inhibit serotonin's excitatory effects on nodose ganglion cells.
Purpose of the Study:
- To investigate the effects of endogenous (oleamide) and exogenous (delta-9-THC) cannabinoids on sleep-related apnea.
Main Methods:
- Polysomnography was used to assess sleep architecture, respiratory patterns, and apnea in rats.
- A within-subjects crossover design involved 12 recordings per animal.
- Animals received intraperitoneal injections of delta-9-THC, oleamide, and serotonin, alone and in combination.
Main Results:
- Both delta-9-THC and oleamide stabilized respiration during all sleep stages.
- Delta-9-THC decreased the apnea index by 42% in NREM and 58% in REM sleep.
- Oleamide and delta-9-THC blocked serotonin-induced exacerbation of sleep apnea, indicating peripheral nervous system interaction.
Conclusions:
- Exogenous and endogenous cannabinoids potently suppress sleep-related apnea.
- Findings suggest a role for endocannabinoids in autonomic stability during sleep.
- Cannabinoids may be relevant for treating sleep-related breathing disorders.