Delta Sleep-Inducing Peptide (DSIP)

Delta Sleep-Inducing Peptide (DSIP)

Delta Sleep-Inducing Peptide (DSIP) represents a premium, laboratory-grade investigational synthetic nonapeptide delivered in ultra-pure lyophilized/freeze-dried form. This high-purity peptide material provides exceptional technical value to modern scientific investigations focused on sleep quality research, delta sleep induction studies, neuroprotection analysis, mood enhancement modeling, and stress regulation pathways. The lyophilized peptide format ensures maximum stability and precise reconstitution accuracy for analytical testing and in vitro/in vivo modeling applications conducted by qualified investigators studying chronic insomnia, sleep disorders, and neurological conditions.

Our global shipping infrastructure ensures seamless delivery to research facilities worldwide. Domestic orders within the United States ship directly from primary U.S. production facilities, ensuring rapid fulfillment across all 50 states. International orders, including all European countries, utilize our dedicated United Kingdom shipping hub to ensure seamless, efficient customs clearance across the UK and continental Europe, minimizing transit delays while maintaining chemical stability throughout shipment.

• Unique lot-coding on every vessel with public third-party HPLC and mass spectrometry lab reports available for absolute transparency and quality verification

• Formulation completely free of adulterants, excipients, flow agents, or stabilizers to guarantee unadulterated raw peptide purity for accurate research data

• Strategic precision over-weighing inside the vessel compensates for natural adhesion loss during laboratory transfer, ensuring investigators receive minimum labeled quantity

• Packaging engineering utilizes UV-resistant sealing with tamper-proof closure designed specifically for transit safety and structural integrity during international shipment

Technical Specifications & Chemical Profile

Research Applications & Storage Protocols

Sleep Peptide & Delta Sleep Induction Neurobiological Mechanisms

Delta Sleep-Inducing Peptide (DSIP) was isolated from rabbit cerebral venous blood by Schoenenberger-Monnier group from Basel in 1977 and initially regarded as a candidate sleep-promoting factor. DSIP was shown to be a nonapeptide of molecular weight 849 and to induce mainly delta-sleep (deep slow-wave sleep) in rabbits, rats, mice, and humans, whereas in cats, the effect on REM sleep was more pronounced. In addition to sleep, the peptide affects electrophysiological activity, neurotransmitter levels in the brain, circadian and locomotor patterns, hormonal levels, and psychological performance. Experimental results suggested a modulation or ‘programming’ interaction of DSIP with endogenous opioid-peptidergic systems and exogenous intracerebrally or systemically administered morphine and amphetamine. DSIP induces cerebral MAO-A activity and has a pronounced influence on the circadian rhythms of locomotion and intracerebral neurotransmitter as well as plasma protein and cortisol concentrations. DSIP was also shown to counteract experimentally induced stress situations in animals. An improvement of the psychomotor performance and concentration capacity in humans beside sleep normalization and pronounced effects on withdrawal symptoms including pain states in alcoholics and opiate addicts was discovered. This encouraged a pilot study for action of the peptide in humans suffering from chronic pronounced pain episodes, and DSIP lowered significantly the pain levels of 6 out of 7 patients after intravenous administration, with simultaneous significant reduction of concomitantly occurring depressive states. DSIP-like immunoreactivity was found by RIA and immunohistochemistry in brain and by RIA in peripheral organs of the rat as well as in plasma of several mammals. Plasma DSIP-like immunoreactivity decreased at the transition from wakefulness to sleep, suggesting that DSIP is induced by mechanisms involved in the initiation of sleep. However, the link between DSIP and sleep has never been fully characterized, in part because of the lack of isolation of the DSIP gene, protein, and possible related receptor, making the hypothesis regarding DSIP as a sleep factor extremely poorly documented and still weak. Despite this, DSIP has been examined for therapeutic effects in chronic pain, insomnia, mood improvement, stress regulation, sleep quality, substance withdrawal, and neuroprotection. Research applications include sleep quality research, delta sleep induction studies, neuroprotection research, mood enhancement modeling, stress regulation analysis, chronic pain relief studies, sleep disorder investigations, insomnia research, withdrawal symptom relief studies, opioid-addiction research, alcohol-abuse research, circadian rhythm studies, and neuroendocrine regulation investigations.

Handling & Storage Guidelines

• Long-Term Storage: Store cold, keep refrigerated at -20°C (freezer). Do NOT freeze once reconstituted. Lyophilized peptide should be stored at -20°C, and the reconstituted peptide solution at 4°C (refrigerated). Keep vial tightly sealed. Protect from moisture and light. Shelf life up to 2 years when stored properly.

• Solubility: Reconstitute with bacteriostatic water. Typical reconstitution depends on desired concentration. Standard laboratory protocols are used for in vitro applications.

• Appearance: White lyophilized/freeze-dried peptide powder.

Global Logistics & Order Fulfillment

We proudly support scientific advancement across all 50 U.S. states and throughout Europe. Customers can seamlessly toggle their preferred currency between USD and EUR using the currency switcher located on the left-hand side of our website. All shipments are securely packaged to withstand international transit without compromising structural or chemical stability.

Laboratory Use Only Disclaimer

This material is sold strictly for laboratory research and development use only. It is not approved for human consumption, nor for medical, veterinary, or household applications. All purchases are governed by our standard Terms & Conditions. Please review them carefully before placing your order.