Effect of humanin analogues on experimentally induced impairment of spatial memory in rats.
Krejcova. Gabriela G; Patocka. Jiri J; Slaninova. Jirina J
Key Findings
- Humanin analogues protect cells from Alzheimer‑related stress in lab tests
- [Gly14]-humanin improves memory deficits in mice caused by scopolamine
- Both [Gly14]-humanin and des‑Leu‑PAGA restore spatial memory in rats after anticholinergic challenge
Practical Outcomes
- These results are promising but still early; they don’t provide a ready‑to‑use protocol for people. The findings suggest that humanin‑based compounds could one day be explored for cognitive support, but more research is needed to determine safe doses and delivery methods for humans.
Summary
A study in rats showed that two versions of the peptide humanin can reverse memory problems caused by a drug that blocks brain chemicals important for learning. The peptides were given by injection at a specific dose and helped the animals perform better in a maze test, suggesting they might support brain function by affecting the cholinergic system.
Abstract
Humanin and its analogues have been shown to protect cells against death induced by various Alzheimer's disease genes and amyloid-beta-peptides in vitro: the analogue [Gly14]-humanin has also been shown to be potent in reversing learning and memory impairment induced by scopolamine in mice in vivo. It is important to validate these results by using other behavioral methods. In this study, the effect of [Gly14]-humanin and des-Leu-PAGA, another analogue (0.2 micromol kg(-1), i.p.) on the 3-quinuclidinyl benzilate-induced (2 mg kg(-1), i.p.) impairment of spatial memory in the multiple T-maze in rats has been evaluated. Both peptides reversed the impairment of spatial memory. These results indicate the potential of humanin analogues in modulation of the cholinergic system.
Study Information
pubmed
2004
2004-10-01T00:00:00.000Z
10.1002/psc.569
67
19