PMID-6895513 – DSIP Acute and Delayed Effects on Human Sleep
Schneider-Helmert D, Schoenenberger GA. Effects of DSIP in man: multifunctional psychophysiological properties besides induction of natural sleep. Neuropsychobiology. 1983;9(4):197-206.
Quick Reference
| Property | Value |
|---|---|
| PMID | 6895513 |
| DOI | — |
| Year | 1983 |
| Journal | Neuropsychobiology |
| Study Type | Human clinical (controlled) |
| Evidence Level | II |
| Sample | Human subjects with sleep disturbances |
| Peptide(s) Studied | DSIP |
Key Findings
- DSIP administration produced acute sleep-promoting effects including reduced sleep latency and increased total sleep time on the night of administration
- Delayed improvements in sleep quality were observed in subsequent nights following DSIP treatment, suggesting a modulatory rather than purely acute pharmacological effect
- DSIP enhanced slow-wave sleep (delta sleep) content, the restorative deep sleep phase
- Subjective sleep quality ratings improved both acutely and in the days following administration
- DSIP demonstrated multifunctional psychophysiological properties beyond sleep induction, including anxiolytic-like effects and improved daytime alertness
- No significant hangover effects or next-day sedation were reported, distinguishing DSIP from conventional hypnotics
Study Design
Controlled human clinical study in subjects with sleep disturbances. DSIP was administered intravenously. Sleep architecture was assessed using polysomnography (EEG-based). Both acute (same-night) and delayed (subsequent nights) effects were monitored. Subjective sleep quality was assessed alongside objective sleep parameters.
Limitations
- Small sample size typical of early sleep research
- Intravenous administration route; does not reflect subcutaneous dosing used in current practice
- Study conducted in 1983 with polysomnographic technology and scoring criteria that predate current AASM standards
- Limited characterization of peptide purity by modern analytical standards
- No placebo-controlled crossover design described in detail
Clinical Relevance
This is one of the rare controlled human studies on DSIP and provides direct evidence for its sleep-promoting effects in humans. The finding of both acute and delayed sleep quality improvements supports DSIP's proposed role as a sleep modulator/normalizer rather than a simple sedative. The enhancement of slow-wave sleep without hangover effects distinguishes DSIP from benzodiazepines and Z-drugs. The delayed effect profile suggests DSIP may help reset disrupted sleep patterns, which is clinically relevant for patients with chronic insomnia or circadian disruption.
Related
#research #RCT #evidence-level-II