DSIP
Delta Sleep-Inducing Peptide (DSIP) is a naturally occurring nonapeptide first isolated from the cerebral venous blood of rabbits during induced sleep by Swiss researchers Schoenenberger and Monnier in 1977. DSIP has been the subject of research into sleep architecture, circadian rhythm regulation, and neuroendocrine function for nearly five decades.
Research Overview
DSIP was discovered during pioneering cross-circulation experiments at the University of Basel, where blood from sleeping rabbits was found to induce sleep-like EEG patterns in awake recipient animals. Published research in journals including Neuroscience Letters, Pharmacology Biochemistry and Behavior, and the European Journal of Pharmacology has examined its effects on sleep architecture, stress hormone levels, and circadian-related gene expression. Despite its name suggesting a simple sleep-inducing function, the peptide's mechanism of action appears to involve modulation of multiple neuroendocrine systems rather than direct sedation. Research has shown it interacts with opioid receptors, somatostatin pathways, and circadian clock mechanisms. The peptide is unusual in that it can cross the blood-brain barrier, which is uncommon for peptides of this size.
Key Research Findings
- 1
Discovered through cross-circulation experiments showing sleep induction in rabbits (Schoenenberger & Monnier, 1977)
- 2
Demonstrated ability to cross the blood-brain barrier in radiolabeled tracer studies in animals
- 3
Modulated delta wave sleep architecture in EEG studies of animal models
- 4
Showed interactions with opioid receptor systems in binding studies
- 5
Influenced cortisol and ACTH rhythms in animal neuroendocrine studies
- 6
Nearly 50 years of published research across multiple international laboratories
Where to Buy DSIP
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Related Peptides
Molecular Details
- Sequence
- Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu
- Molecular Weight
- 848.8 g/mol
- Molecular Formula
- C35H48N10O15
Storage & Handling
- Storage
- Store lyophilized at -20C. Reconstituted at 4C, use within 7 days. Light-sensitive.
- Solubility
- Soluble in water and saline. Handle with care — somewhat less stable than other peptides.
Categories
Research Disclaimer: All information on this page is provided for educational and research purposes only. Products discussed are intended for laboratory research use exclusively. They are not intended for human consumption, therapeutic use, or as dietary supplements. Always follow institutional guidelines and consult published peer-reviewed literature for research protocol development. Not for human consumption.