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Compounds · Other compounds · continued

Revisiting: Melanocortin agonists: mechanism and the documented adverse profile posts 31–60

This is a continuation of a long topic, addressed by post number rather than by page. Start at post 1 · go to the accepted answer.

FP
f.petrovTL24 Oct 2024#31

I read post #28 twice before replying, because I had assumed the opposite.

Melanocortin agonists would be much easier to settle if anyone reported the denominator. Almost nobody reports the denominator.

3 likes 22mo
AS
a.stephanopoulosTL3Regular4 Oct 2024#32

Reading a supplier's product description as a marketing document: that is exactly what it is. The hyperbole, the mechanism written as fact, the theoretical benefits stated as established benefits — all of that is marketing. Treat it as such and separate it from evidence where evidence exists.

One more caveat and then I will stop qualifying: the sample selected itself.

0 likes 22mo
PF
p.friskTL25 Oct 2024#33

The strongest argument against my own position on Melanocortin agonists, stated as well as I can state it, since nobody else has yet.

24 likes 22mo
VM
v.milanoviTL3Regular5 Oct 2024#34
formulary_notes, post #26: If someone has run Melanocortin agonists properly I would rather read that than my own reconstruction of it. Posting mine only because the thread has gone quiet. Go to post

Distinguishing three things in the Melanocortin agonists discussion that keep getting used interchangeably: the observation, the proposed mechanism, and the recommendation that gets attached to both.

11 likes in reply to #26 22mo
YR
y.ramosTL26 Oct 2024#35
m.haddad, post #22: Grateful for the specificity. Vague answers to this question are what sent me looking. Go to post

The honest summary for most of this subcategory: a plausible mechanism, animal data, and first-hand accounts. Saying so is more useful than assembling the accounts into something that reads like evidence.

Stating my assumptions rather than smuggling them in.

6 likes in reply to #22 22mo
ID
integrator_draftTL3Regular7 Oct 2024#36

PT-141 was developed from the same family with a different receptor profile, and it has a considerably better documented human evidence base than most compounds discussed in this subcategory.

1 like 22mo
SS
s.solbergTL27 Oct 2024#37
VK
v.klausenTL3Regular8 Oct 2024#38

Taking post #35 at face value and following it one step further.

Adding a null result on Melanocortin agonists. I looked, carefully, and found nothing, and null results deserve posting precisely because they never are.

17 likes 22mo
LF
l.ferreiraTL28 Oct 2024#39
c.lundgren, post #13: Post #9 put the caveat in the right place and I want to underline it. On analysis: unusual or modified sequences are exactly where a default reversed-phase method is least likely to be appropriate. A supplier that runs everything on one gradient will produce a flattering result for something. I have said this before in a thread nobody… Go to post

On Melanocortin agonists, the part that usually goes wrong is that the question is asked as though it has one answer. It has a range, and the width of the range is the interesting bit.

If you can post the two or three numbers you are working from, several people here will check the arithmetic rather than argue about the conclusion.

0 likes in reply to #13 22mo
G
GDashwoodTL3Regular9 Oct 2024#40

Confirming post #39 from a second method, which matters more than confirming it from a second person.

Thymosin alpha-1 has a regulatory history in several jurisdictions and a real clinical literature, which puts it in a different evidential category from most of its neighbours here.

0 likes 22mo
DO
dr_okonkwoTL4 Moderator9 Oct 2024#41

Taking post #40 at face value and following it one step further.

Dose conversions between related compounds in this subcategory are made far too casually. Structural similarity does not imply potency similarity and frequently does not imply the same receptor profile.

9 likes 22mo
MP
m.perrinTL210 Oct 2024#42

Useful. I have added it to my own notes with the date on it.

20 likes 22mo
SK
s.karlsen_rphTL3Pharmacist10 Oct 2024#43
m.haddad, post #22: Grateful for the specificity. Vague answers to this question are what sent me looking. Go to post

Thymosin alpha-1 has a regulatory history in several jurisdictions and a real clinical literature, which puts it in a different evidential category from most of its neighbours here.

It is worth stating the boring hypothesis before the interesting one.

0 likes in reply to #22 22mo
OV
o.vukovicTL211 Oct 2024#44

Small methodological point on Melanocortin agonists: repeating a measurement is cheap and resolves most of what is being argued about here at no cost to anyone.

0 likes 22mo
ME
me.eriksenTL212 Oct 2024#45

Building on post #44 rather than restating it.

Trying to state the Melanocortin agonists position in a way that someone who disagrees would recognise as fair, because I do not think the version in this thread passes that test.

13 likes 22mo
KS
k.salinasTL212 Oct 2024#46
c.cardoso, post #18: Post #17 is the version of this I will quote in future. One addition. Melanocortin agonists came up in a thread eighteen months ago and was answered well. I cannot find it, which is itself the problem, so here is the reconstruction. Go to post

Melanotan II is a non-selective melanocortin agonist, which is why its effects are not confined to pigmentation. The non-selectivity is the mechanism and not a side issue.

Not the answer, but possibly the question that gets there.

28 likes in reply to #18 22mo
DF
d.fontaineTL213 Oct 2024 · edited#47

An honest declaration on Melanocortin agonists: I have a prior here and it is strong enough that you should weight what I say downward. Stating it rather than hiding it.

0 likes 21mo
IB
i.bakkenTL213 Oct 2024#48

Everything in post #46 holds. The case it does not cover is the one I have.

Melanocortin agonists is worth one more sentence than it usually gets, and the sentence is the one about how the number was arrived at.

2 likes 21mo
CL
customs_ledgerTL3Regular14 Oct 2024#49

Following this. I have the same question and no better information than the first post.

2 likes 21mo
PO
p.ostergaardTL214 Oct 2024#50

Thymosin alpha-1 has a regulatory history in several jurisdictions and a real clinical literature, which puts it in a different evidential category from most of its neighbours here.

Second-hand, so weight it accordingly.

9 likes 21mo
FV
first_vialTL1Member15 Oct 2024#51

Solubility varies far more across this subcategory than within the incretins. A compound that needs a specific diluent or a specific pH is not being difficult; it has a solubility profile and the supplier should state it.

4 likes 21mo
II
i.ilungaTL215 Oct 2024#52

Reading a supplier's product description as a marketing document: that is exactly what it is. The hyperbole, the mechanism written as fact, the theoretical benefits stated as established benefits — all of that is marketing. Treat it as such and separate it from evidence where evidence exists.

0 likes 21mo
SL
sleep_logTL2Regular16 Oct 2024 · edited#53
GEldridge, post #7: Reading rather than answering, but this is the post I would point somebody at. Go to post

Post #50 describes the usual case. This is about the unusual one.

Adding what did not work for me on Melanocortin agonists, since the failures never get written up and they are half the useful information.

0 likes in reply to #7 21mo
JB
j.bhattacharyaTL216 Oct 2024#54

Melanocortin agonists has a well-known answer and a correct answer, and the interesting work is establishing that they are the same. Nobody has done that here yet.

19 likes 21mo
SC
s.chowdhuryTL3Regular17 Oct 2024#55

AOD-9604 is a fragment of human growth hormone and has been discussed as a potential weight-loss agent based on theoretical mechanism. The fragment hypothesis — that the fragment retains a specific property of the intact hormone — is not settled for this compound.

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

8 likes 21mo
AI
an.ibarraTL217 Oct 2024#56
formulary_notes, post #26: If someone has run Melanocortin agonists properly I would rather read that than my own reconstruction of it. Posting mine only because the thread has gone quiet. Go to post

Building on post #53 rather than restating it.

Second-hand on Melanocortin agonists, so weight it accordingly — someone whose method I trust told me this and I have not verified it myself.

2 likes in reply to #26 21mo
FN
formulary_notesTL3Regular18 Oct 2024#57

Something worth flagging about Melanocortin agonists: the strongest-sounding claims in this thread are the ones with no source attached, which is the usual pattern and not a coincidence.

0 likes 21mo
CA
c.amankwahTL218 Oct 2024#58

Thymosin alpha-1 has a regulatory history in several jurisdictions and a real clinical literature, which puts it in a different evidential category from most of its neighbours here.

26 likes 21mo
LM
lyophil_marginTL3Regular19 Oct 2024#59

Post #57 and I disagree about the size of the effect, not about the direction.

Two sentences on Melanocortin agonists 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.

0 likes 21mo
EK
e.kuipersTL219 Oct 2024 · edited#60

Taking post #57 at face value and following it one step further.

The reason Melanocortin agonists is hard to answer is that the obvious measurement and the relevant quantity are not the same thing, and substituting one for the other is silent.

0 likes 21mo