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DSIP Mechanism of Action Detailed: Receptor Pathway vs Clinical Effect Comparison
Delta opioid receptor binding DOR (G-protein coupled) Reduced sleep onset latency (15–20 min improvement) Non-sedative pathway. Modulates arousal threshold rather than forcing inhibition Calcium channel inhibition Voltage-gated Ca²⁺ channels (L-type, N-type) 3
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- Delta opioid receptor binding
- DOR (G-protein coupled)
- Reduced sleep onset latency (15–20 min improvement)
- Non-sedative pathway. Modulates arousal threshold rather than forcing inhibition
- Calcium channel inhibition
- Voltage-gated Ca²⁺ channels (L-type, N-type)
- 30% reduction in neuronal calcium uptake (hippocampal studies)
- Shifts excitation-inhibition balance without GABAergic suppression
- CRH suppression (HPA axis)
- Hypothalamic CRH neurons
- 18–25% reduction in evening cortisol levels
- Addresses stress-driven wakefulness at the hormonal source
- Slow-wave sleep enhancement
- Thalamocortical hyperpolarisation
- 40–50% increase in Stage 3 NREM duration
- REM preservation distinguishes DSIP from benzodiazepines and Z-drugs
- Autonomic tone shift
- Parasympathetic dominance via vagal modulation
- Heart rate variability increase during sleep (8–12% HRV improvement)
- Measurable shift toward restorative autonomic state