Compound Guide
DSIP Research — Delta Sleep-Inducing Peptide, HPA Axis & Cortisol Modulation
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DSIP (delta sleep-inducing peptide): promotes slow-wave sleep and HPA axis modulation. Graf 1984 human data. Investigational with mixed replication.
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DSIP (Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu) is a naturally occurring nonapeptide first isolated in 1974 from rabbit cerebral venous blood during induced sleep by the Schoenenberger-Monnier group. Found in the hypothalamus, limbic system, pituitary, and peripheral tissues. Research activity was highest in the 1970s–1990s; the compound is investigational with a mixed replication record.
Sleep Regulation
DSIP is studied for promotion of slow-wave (delta) sleep — the deepest sleep stage, during which GH secretion peaks and cellular repair processes are most active. Unlike melatonin (circadian timing) or sedatives (pharmacological suppression), DSIP's proposed mechanism is normalization of sleep architecture through GABAergic, opioid receptor, and HPA axis pathways.
HPA Axis Modulation — Human Data
Graf MV et al. (1984, Neuroendocrinology) documented significant attenuation of ACTH and cortisol responses to standardized stress protocols following DSIP pretreatment in human subjects. A separate study (ScienceDirect, 2000) found no significant effect on CRH/meal-induced ACTH and cortisol — indicating this mechanism has not been uniformly replicated across paradigms.
Key References
- Schoenenberger GA, Monnier M. Characterization of a delta-EEG-inducing peptide. Proc Natl Acad Sci. 1977;74(3):1282–1286.
- Graf MV, et al. Effect of DSIP on stress-induced ACTH and cortisol in humans. Neuroendocrinology. 1984.
For educational and research reference only. DSIP is supplied for in-vitro laboratory research use only. Not for human consumption.
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This article is for informational and research purposes only. All compounds referenced are sold strictly for in-vitro laboratory research use and are not intended for human consumption, veterinary use, or clinical/diagnostic procedures. These statements have not been evaluated by the FDA. Avera Refined Wellness is a subsidiary of RDS 412 LLC.
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