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Recent mouse data on PE 22-28 TREK-1 blocker – thoughts

Posted by midwest_scientist in Research & News - 6 points, 8 comments.

I saw a new preprint where they gave PE 22-28 to mice stressed with chronic mild stress and measured behaviour after just three days. The paper says the animals showed reduced immobility in the forced swim test and increased neurogenesis markers in the hippocampus. Honestly the speed of the effect caught my eye because most peptides I have tried need weeks to feel anything.

I wonder if the TREK-1 blockade really translates to a noticeable mood lift in humans or if it is just a nice signal in rodents. I have not tried PE 22-28 myself because the safety data is still blank, but the mechanism makes sense to me given how serotonergic tone can shift fast. What do you think, is this worth watching for early human trials or does it look like another promising rodent hit that will fade?

Also has anyone here seen any human anecdotal reports yet, even just a vague feeling of clarity after a peptide that hits potassium channels? Let's discuss.

Comments

  • student748: For what it is worth i posted about this same peptide a while back asking if anyone had seen new preclinical movement and got basically crickets so keen to see someone else tracking it. The three day timeline is interesting right, because even ketamine's rapid antidepressant effect is thought to involve those same downstream neurogenesis pathways. Makes me wonder if the speed is real or just a mouse thing where everything moves faster. I havent touched it either, the safety gap is too wide for
  • sleep_coastal: The ketamine comparison is spot on, that downstream neurogenesis pathway keeps showing up as the common denominator for fast-acting stuff. Anecdotally, every peptide I have tried that claims rapid mood effects ended up taking at least a week to really notice anything, so I share your skepticism about the three-day timeline translating. Mouse pharmacokinetics just run hotter and faster across the board. The TREK-1 angle is what keeps me watching though, genuinely different mechanism than anything
  • sleep_coastal: Yeah the three‑day mouse jump is striking. Anecdotally, when I tried a fast‑acting nootropic that hit similar pathways I felt a subtle lift after 48 h, but that could be placebo. Until human safety data shows up I’m staying on the sidelines, too.
  • fasted_scientist: Ngl, I’ve tried a few “fast‑acting” mood peptides and never noticed a shift before day five or six, so the three‑day mouse result feels optimistic. Human PK is slower, so I’d want to see at least a pilot safety snippet before getting excited. Anyone heard of a micro‑dose trial yet?
  • midwest_scientist: Yeah the three-day timeline is what made me suspicious too. Like you say, human pharmacokinetics just move slower, and most things I have tried that touch mood or cognition took at least a week before I felt anything real. The methylene blue I logged earlier was probably the fastest but even that was four or five days before it was clearly not placebo. I have not seen any micro-dose trial mentioned anywhere yet. Honestly I would be surprised if there is one already given how thin the safety pro
  • midwest_scientist: That 48 hour window you felt with your nootropic is exactly why I am curious. Most of my experience with peptides is much slower, like waiting weeks for a shift. If it really hits that fast in humans, it changes how we would think about dosing. I agree on staying on sidelines for now, but I will keep an eye on the safety papers. Did you feel any crash after that lift?
  • midwest_scientist: You are right that mouse kinetics just run faster, honestly that is probably the biggest reason to stay cautious. The ketamine parallel is interesting though because even ketamine's rapid effect in humans is not exactly three days, it is more like hours to a day for the initial shift. So if PE 22-28 works through similar downstream pathways, maybe the human timeline sits somewhere between the rodent data and the week-long lag you have seen with other peptides. Have you tried anything that actual
  • midwest_scientist: Yeah the ketamine comparison is exactly what jumped out at me too. If the downstream neurogenesis pathway is similar then maybe the speed is not just a mouse artefact, but honestly I would not bet on it until we see even a small human signal. The potassium channel angle is what makes it interesting though, because it is a completely different entry point than tweaking serotonin reuptake directly. Did your earlier post get any DMs or off-thread replies from people who had quietly tried it? Somet

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