[Action of the "delta-sleep peptide" on monoamine oxidase and acetylcholinesterase activity in subcellular fractions from different rabbit brain formations in vivo].
Dovedova. E L EL; Ashmarin. I P IP
Key Findings
- DSIP (30 µg/kg) increased MAO‑A activity in synaptosome and mitochondrial fractions of motor cortex, nucleus caudatus, and thalamus.
- MAO‑B and acetylcholinesterase activities were only minimally and specifically affected.
- The results suggest DSIP may act as a regulatory modulator at the synapse, particularly affecting serotonin turnover during sleep.
Practical Outcomes
- For biohackers, the study indicates DSIP could influence serotonin breakdown, which might impact sleep quality or mood, but the evidence is limited to rabbit brain tissue. No concrete dosing changes or protocols can be drawn from this data; further human research is needed before applying it to personal regimens.
Summary
A rabbit study found that giving delta‑sleep‑inducing peptide (DSIP) at 30 µg per kilogram boosts the activity of the enzyme MAO‑A (which breaks down serotonin) in certain brain areas, while having little effect on other enzymes. This hints that DSIP may help regulate sleep by influencing serotonin metabolism, but the work is early‑stage and done in animals.
Abstract
Administration of delta-sleep-inducing peptide (DSIP) in vivo in a dose of 30 microgram/kg bw brings about MAO-A (substrate-serotonin) activation in synaptosome subfractions and cellular mitochondria from the brain structures (motor cortex, nucleus caudatus, thalamus). Activity of MAO-B (substrate-p-nitrophenylethylamine) and acetylcholinesterase was inhibited negligibly and specifically in subcellular fractions of the test brain structures. The results suggest that DSIP effects the regulatory or modulation function in the synapse. As one of the elements of sleep mechanisms this peptide induces a number of processes, particularly in serotonin metabolism.
Study Information
pubmed
1982