The Peptide CommonsEst. May 2024
Independent. We sell nothing and are affiliated with no manufacturer or pharmacy. Every moderation action is logged in public
Compounds · Repair & healing peptides · continued

Reading a preclinical wound-healing model and its relevance to a human tendon posts 31–60

This is a continuation of a long topic, addressed by post number rather than by page. Start at post 1.

WN
w.novakTL3Regular11 Nov 2024#31
s.coelho, post #13: Reading a preclinical wound-healing model is a good example of a question where the honest answer is boring and the interesting answers are unsupported. I would go with boring. Go to post

The reason reading a preclinical wound-healing model keeps being re-asked is that the answer is conditional and people quote it without the condition. It is not that the answer is unknown.

18 likes in reply to #13 21mo
YA
y.asanteTL211 Nov 2024#32

This follows post #29 rather than contradicting it.

Reading a preclinical wound-healing model is well covered in the tag pages, and the older discussions are better than the recent ones because they were argued out properly. Worth twenty minutes before adding to this one.

7 likes 21mo
JW
journalclub_wrenTL3Regular11 Nov 2024#33

Reported local reactions are common enough in first-hand accounts here to be worth mentioning and are not characterised in any published series.

1 like 21mo
RF
ro.friskTL211 Nov 2024#34

Research use only, not approved for human use, and in this family that statement carries more weight than usual because the published human safety data is effectively absent rather than merely limited.

I would treat that as a working assumption and revisit it.

0 likes 21mo
YM
y.mensahTL3Wiki editor11 Nov 2024#35
n.stanescu, post #11: Reported local reactions are common enough in first-hand accounts here to be worth mentioning and are not characterised in any published series. Go to post

Anecdote is the whole of the human evidence base here, and this community's convention is to say so rather than to aggregate anecdotes into something that sounds like data.

On balance I think that is right, and I would not bet much on it.

25 likes in reply to #11 21mo
HE
h.espinozaTL212 Nov 2024#36
ar.petrov, post #3: The arithmetic in post #2 is right; the assumption feeding it is the part to check. For anyone arriving from search engines: this subcategory discusses published preclinical work and the absence of published clinical work. It does not endorse or recommend these compounds. Scoping that to what I have actually seen rather than what I have… Go to post

Nobody has said the unglamorous part of reading a preclinical wound-healing model yet, so: most of the variation is explained by things that are boring to write about and easy to check.

12 likes in reply to #3 20mo
ST
slow_titratorTL2Regular12 Nov 2024 · edited#37

Coming back to post #33, because the follow-up matters more than the original answer.

Nothing in this subcategory is medical advice and several members here are describing experiments on themselves. Both of those things should be stated plainly rather than implied.

4 likes 20mo
TK
t.karlsenTL212 Nov 2024#38

What I would want before treating reading a preclinical wound-healing model as settled: the method, the sample, and whether anyone tried to find the opposite result. Two of the three are usually missing.

0 likes 20mo
PW
PharmNotes_WhitfieldTL4Pharmacist12 Nov 2024#39

Post #37 describes the usual case. This is about the unusual one.

Dose-response is unstudied in humans for essentially everything in this family, which means the confident numbers in circulation came from somewhere other than a trial.

0 likes 20mo
JF
j.fonsecaTL212 Nov 2024#40
j.mwangi, post #16: Dose-response is unstudied in humans for essentially everything in this family, which means the confident numbers in circulation came from somewhere other than a trial. Posted with less confidence than the sentence structure implies. Go to post

What would change the position on repair peptides: adequately powered, published, peer-reviewed randomised controlled human trials with pre-specified outcomes. That is the standard applied to every other therapeutic claim on this site and it is the standard applied here.

If this contradicts something upthread, the upthread version may well be the better one.

17 likes in reply to #16 20mo
MI
m.ibarraTL212 Nov 2024#41
j.nwosu, post #12: Reading a preclinical wound-healing model: the model shows whether a mechanism is plausible in a specific context. It does not show magnitude of effect in humans, does not show safety profile in humans, and does not show whether the effect survives in a more complex biological system. That is not a criticism of preclinical work — it is… Go to post

An update on my earlier reading a preclinical wound-healing model post: the pattern held for another six weeks and then stopped, which I did not predict and cannot explain.

24 likes in reply to #12 20mo
MH
ms_hollowayTL4Mass spectrometrist12 Nov 2024#42

Second this, and I would have said it less carefully.

0 likes 20mo
LS
l.salinasTL213 Nov 2024 · edited#43

Narrowing post #41, because the general version has more than one answer.

For anyone arriving from search engines: this subcategory discusses published preclinical work and the absence of published clinical work. It does not endorse or recommend these compounds.

3 likes 20mo
SL
s.leclercTL4 Moderator13 Nov 2024#44

Everything in post #40 holds. The case it does not cover is the one I have.

The pentadecapeptide sequence is short and stable enough to survive conditions that would degrade a larger peptide, which is one of the few things about it that is well characterised.

11 likes 20mo
CC
ch.correiaTL213 Nov 2024#45
b.vanhecke, post #17: Everything in post #16 holds. The case it does not cover is the one I have. Whatever the answer on reading a preclinical wound-healing model turns out to be, the method for getting there is the same: state the assumption, do the arithmetic in public, invite the correction. Go to post

Reading a preclinical wound-healing model would be much easier to settle if anyone reported the denominator. Almost nobody reports the denominator.

17 likes in reply to #17 20mo
TH
TL4_HalvorsenTL4Leader · Journal club13 Nov 2024#46

Post #44 put the caveat in the right place and I want to underline it.

Nothing in this subcategory is medical advice and several members here are describing experiments on themselves. Both of those things should be stated plainly rather than implied.

0 likes 20mo
YA
y.adebayoTL213 Nov 2024#47

The arithmetic in post #46 is right; the assumption feeding it is the part to check.

BPC-157: the preclinical literature is extensive, mostly from a small number of research groups, and reports effects across a wide range of injury models. The breadth of reported effects is itself worth noting — a compound that improves outcomes in tendon, muscle, gut, nerve and bone through a single mechanism would be remarkable, and remarkable claims deserve proportionate scrutiny.

1 like 20mo
EF
endo_fellow_rkTL3Endocrinology fellow13 Nov 2024#48

The absence of adequately powered published randomised human trials is the central fact about BPC-157. This site states that plainly rather than hedging. Mechanistic plausibility does not substitute for it.

I keep a log of this specifically because memory is unreliable about it.

7 likes 20mo
MC
m.coelhoTL213 Nov 2024#49

Picking up post #46: that is the part I would want checked first.

Anecdote is the whole of the human evidence base here, and this community's convention is to say so rather than to aggregate anecdotes into something that sounds like data.

0 likes 20mo
BS
b.solbergTL214 Nov 2024#50

The preclinical work is genuinely interesting and it is preclinical. A rodent tendon model is a model of a rodent tendon, and the translation record from that kind of model is poor.

1 like 20mo
PT
p.trevinoTL214 Nov 2024#51
b.solberg, post #50: The preclinical work is genuinely interesting and it is preclinical. A rodent tendon model is a model of a rodent tendon, and the translation record from that kind of model is poor. Go to post

Reading a preclinical wound-healing model: I would want to see the raw numbers rather than the summary before agreeing. Summaries lose exactly the information that would settle this.

16 likes in reply to #50 20mo
IS
isotonic_sheetTL314 Nov 2024#52
AZ
an.zamoraTL214 Nov 2024#53

Answering the question post #51 raises rather than the one it answers.

The absence of human trials means there is no established dose, no established interval and no established duration. Protocols circulating in this space are convention rather than evidence and should be described as such.

The number is defensible. The precision I gave it is not.

0 likes 20mo
R
RodriguesTL3Regular14 Nov 2024#54

The arithmetic in post #51 is right; the assumption feeding it is the part to check.

The lyophilised cake is worth looking at before adding diluent. A collapsed or shrunken cake is not a purity finding but it does say something about how the vial was made and how it travelled.

31 likes 20mo
YA
y.adeyemiTL214 Nov 2024#55

I would be cautious about generalising from the reading a preclinical wound-healing model example above. It is a good example. It is one example.

22 likes 20mo
MM
maintenance_modeTL3Regular14 Nov 2024#56

That is clearer than the version I had in my head. Thank you.

10 likes 20mo
HB
h.brandtTL215 Nov 2024#57

Two sentences on reading a preclinical wound-healing model and then I will stop, because the rest is speculation and the thread is better without mine.

What is documented is narrow. What is inferred from it is broad. The gap between them is where every argument here lives.

1 like 20mo
RV
r.venkatesanTL3Wiki editor15 Nov 2024#58
o.vogel, post #7: The most useful reply I ever got about reading a preclinical wound-healing model was a request to state my units. It sounds like pedantry and it has saved me twice. Go to post

Adding the measurement that post #55 says would settle it.

Oral versus injected administration claims for BPC-157: the preclinical work studied injection. Oral claims are common in supplier marketing and poorly supported by published evidence. If you are comparing orality between compounds, that is a distinction worth noting.

That distinction has done more work for me than anything else in this category.

0 likes in reply to #7 20mo
SK
s.kuuselaTL215 Nov 2024#59
TL4_Halvorsen, post #46: Post #44 put the caveat in the right place and I want to underline it. Nothing in this subcategory is medical advice and several members here are describing experiments on themselves. Both of those things should be stated plainly rather than implied. Go to post

Post #55 and I disagree about the size of the effect, not about the direction.

Reading a preclinical wound-healing model: the model shows whether a mechanism is plausible in a specific context. It does not show magnitude of effect in humans, does not show safety profile in humans, and does not show whether the effect survives in a more complex biological system. That is not a criticism of preclinical work — it is what preclinical work is for.

30 likes in reply to #46 20mo
B
batchlogTL3Regular15 Nov 2024#60
journalclub_wren, post #33: Reported local reactions are common enough in first-hand accounts here to be worth mentioning and are not characterised in any published series. Go to post

Taking post #59 at face value and following it one step further.

BPC-157's published evidence is overwhelmingly preclinical and mostly rodent. That is not a dismissal — it is the state of the literature, and any discussion that starts elsewhere is starting from something that is not there.

15 likes in reply to #33 20mo