P Palthera
Signalling Peptides

DSIP

Delta sleep-inducing peptide

DSIP (delta sleep-inducing peptide) is an nine- peptide isolated from rabbit cerebral venous blood during electrical sleep stimulation in the 1970s. Most of the peer-reviewed literature consists of reviews and early-phase research from the 1970s–2000s; modern controlled clinical trials are limited.

Add to comparison Subscribe
Abstract reference visual for Signalling Peptides.
Signalling Peptides
Classification
Endogenous nonapeptide implicated in delta-sleep induction
Research stage
Foundational review and early-phase literature from 1970s–2000s; limited recent peer-reviewed primary research
Sequence
Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu
Molecular weight
848.8 Da

Snapshot

Key takeaways

A three-bullet snapshot before reading the full dossier.

  1. 01

    Nonapeptide isolated in the 1970s from electrically-induced sleep states in rabbits.

  2. 02

    Most published literature is review-based and from the 1970s–2000s.

  3. 03

    Not approved as a medicine in any jurisdiction; modern controlled human trials are limited.

Dossier overview

3

research areas

3

references

3

handling notes

01

Mechanism of action

Historical research has associated DSIP with delta-sleep induction, modulation of neurotransmitter and hormone levels, and stress-related signalling — though across the literature the dose-response is described as U-shaped and the mechanism remains incompletely characterised.

02

Research applications

  • Sleep biology research
  • Stress-axis pharmacology research
  • Comparative short-peptide signalling research

Evidence at a glance

What's behind this profile

3 citations · 1984–2001

Review
3

Narrative or systematic reviews; no primary data.

Publication years

  1. 84
  2. 85
  3. 86
  4. 87
  5. 88
  6. 89
  7. 90
  8. 91
  9. 92
  10. 93
  11. 94
  12. 95
  13. 96
  14. 97
  15. 98
  16. 99
  17. 00
  18. 01
19842001

Counts are derived from the cited studies below. A study covering both in vivo and in vitro work is counted by its primary model. Sample size is reported in 0 of 3 citations. Findings remain model-specific and are not extrapolated to therapeutic use.

03

Study references

Each profile cites a minimum of two peer-reviewed sources, with model type and reported sample size where the source provides it. Findings are model-specific and must not be extrapolated to therapeutic use.

Delta-sleep-inducing peptide (DSIP): a review

1984

Graf MV et al. · Neuroscience & Biobehavioural Reviews

Model
Comprehensive narrative review of animal and early human DSIP research
Sample
N/A (review)

Reviewed DSIP's U-shaped dose-response sleep effects across species and the proposed neurotransmitter and hormonal interactions.

PMID 6145137 DOI 10.1016/0149-7634(84)90022-8

Delta-sleep-inducing peptide (DSIP): an update

1986

Graf MV et al. · Peptides

Model
Updated narrative review covering animal and early clinical applications
Sample
N/A (review)

Updated review documenting reported DSIP effects in insomnia, pain, and withdrawal contexts from the 1980s literature.

PMID 3550726 DOI 10.1016/0196-9781(86)90148-8

Delta sleep-inducing peptide

2001

Pollard BJ et al. · European Journal of Anaesthesiology

Model
Narrative review
Sample
N/A (review)

Overview of DSIP's physiological properties and the state of the published evidence as of 2001.

PMID 11437870 DOI 10.1046/j.1365-2346.2001.00917.x

Evidence caveats

  • Most cited primary literature dates from the 1970s–2000s. Modern controlled human clinical trials are limited or absent from major databases.
  • DSIP is not approved as a medicine in any jurisdiction. Mechanism and efficacy remain incompletely characterised.

04

Storage and handling

Store under controlled laboratory conditions with batch and preparation details recorded.

  • Research-only inventory; not for human use.
  • Maintain batch and supplier documentation.
  • Limited modern protocol documentation — verify supplier-specific guidance.