[Sympathetic regulation of heart rhythm under the effect of delta sleep peptide and its deficiency].
Ul'ianinskiĭ. L S LS; Zviaginstseva. M A MA
Key Findings
- Injecting DSIP (60 nM/kg) reduced the positive chronotropic (heart‑rate‑increasing) effect during stellate ganglion irritation.
- s response to that irritation.",
Practical Outcomes
- The results hint that DSIP might help lower sympathetic stress on the heart, which could be attractive for people seeking better heart‑rate variability or stress control. However, the study was done in rabbits with a single high dose, so there is no clear guidance on safe or effective dosing for humans. More research is needed before incorporating DSIP into any self‑directed health protocol.
Summary
A small rabbit study found that giving delta‑sleep peptide (DSIP) makes the heart less reactive to sympathetic nerve stimulation, while blocking DSIP makes the heart react more strongly. This suggests DSIP can tone down the nervous system's push on the heart.
Abstract
In acute experiments on 16 rabbits we've studied effects of delta-sleep peptide and its deficiency on the irritation of the stellate ganglion. It has been revealed, that peptide injection (60 nM/kg) produces lowered positive chronotropic effect and elongated response development during irritation of this ganglion. Administration of antiserum to delta-sleep peptide (T = 1:3000) causes opposite effect: enhances sympathetic response during irritation of the stellate ganglion. Thus, delta-sleep peptide promoted lowered sympathetic influences on the heart.
Study Information
pubmed
1991