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Compounds · Other compounds · continued

Revisiting: Melanocortin agonists: mechanism and the documented adverse profile posts 121–142

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.

YR
y.rahimiTL216 Nov 2024 · edited#121
formulary_notes, post #106: 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. Go to post

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 be interested in a counterexample if anyone has one.

14 likes in reply to #106 20mo
P
preregisteredTL3Research methods17 Nov 2024#122

The arithmetic in post #119 is right; the assumption feeding it is the part to check.

What I can speak to on Melanocortin agonists is narrow, so I will keep it narrow rather than generalising from it. Beyond that boundary I do not know.

5 likes 20mo
RP
r.petrovTL217 Nov 2024#123

Where I part company with post #119, and it is a narrow parting.

On Melanocortin agonists I would separate what is worth knowing from what is worth acting on. The first list is long and the second is short, and conflating them is how threads get heated.

0 likes 20mo
PE
ppm_errorTL3Analytical chemist18 Nov 2024#124

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.

29 likes 20mo
CH
c.haddadTL218 Nov 2024#125
preregistered, post #122: The arithmetic in post #119 is right; the assumption feeding it is the part to check. What I can speak to on Melanocortin agonists is narrow, so I will keep it narrow rather than generalising from it. Beyond that boundary I do not know. Go to post

Reporting rather than recommending, on Melanocortin agonists. What happened is above. Whether it should have is a different question and not one I am qualified to answer.

21 likes in reply to #122 20mo
PN
plateau_notesTL2Regular19 Nov 2024#126
t.ndiaye, post #95: Agreed on Melanocortin agonists, with one qualification that I think matters. The reasoning holds for the case as described. Change the starting assumption and it does not, and the starting assumption is the part nobody states. Go to post

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.

9 likes in reply to #95 20mo
NV
n.vukovicTL219 Nov 2024#127

I had written a reply contradicting post #123 and deleted it. Here is what survived.

Melanocortin agonists: mechanism involves the melanocortin-4 receptor pathway that regulates appetite. The documented adverse profile includes blood pressure elevation and erections of sustained duration, the second of which is specific enough that it is the first thing worth mentioning.

That is one dataset and I would not build a rule on it.

0 likes 20mo
AD
appeals_deskTL319 Nov 2024#128
SC
s.coelhoTL220 Nov 2024#129
NH
n.haddadTL220 Nov 2024 · edited#130

I read the earlier replies on Melanocortin agonists twice before writing this, because I had assumed the opposite and wanted to be sure I was disagreeing with what was said rather than what I expected.

14 likes 20mo
SH
s.hartmannTL221 Nov 2024#131

Post #130 answers the question as asked. The question underneath it is different.

Melanocortin agonists: mechanism involves the melanocortin-4 receptor pathway that regulates appetite. The documented adverse profile includes blood pressure elevation and erections of sustained duration, the second of which is specific enough that it is the first thing worth mentioning.

Posting it because the silence on this was starting to look like agreement.

22 likes 20mo
K
KForsbergTL2Member21 Nov 2024#132

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.

0 likes 20mo
AP
ar.petrovTL222 Nov 2024#133
s.ostergaard, post #74: Adding thanks rather than a view. I do not have a view worth the space. Go to post

What I would tell a new member reading about Melanocortin agonists for the first time: the confident posts are not the reliable ones, and the reliable ones are longer.

3 likes in reply to #74 20mo
FF
f.fenwickTL3Regular22 Nov 2024#134

Quietly grateful for the plain phrasing. Not every thread gets that.

10 likes 20mo
LA
l.aguirreTL222 Nov 2024#135

I think the Melanocortin agonists question is answerable and has not been answered, which is a more optimistic position than most of this thread.

16 likes 20mo
RF
r.friskTL223 Nov 2024#136

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.

31 likes 20mo
HF
h.ferrariTL223 Nov 2024#137
r.novak, post #62: I had written a reply contradicting post #60 and deleted it. Here is what survived. 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. Worth one more sentence than it usually gets. Go to post

Melanocortin agonists sits at the boundary between what this community can usefully discuss and what it cannot, and I think it falls on the discussable side, narrowly.

1 like in reply to #62 20mo
RV
r.villalobosTL224 Nov 2024 · edited#138

On post #136 — agreed on the reasoning, with one qualification.

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.

That is my reading. Someone else read the same page differently and was reasonable.

6 likes 20mo
SK
s.kravchenkoTL224 Nov 2024#139

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 20mo
GF
gradient_fileTL2Member24 Nov 2024#140

Answering the question post #136 raises rather than the one it answers.

An update on my earlier Melanocortin agonists post: the pattern held for another six weeks and then stopped, which I did not predict and cannot explain.

1 like 20mo
MR
m.radichTL225 Nov 2024#141
appeals_desk, post #128: Confirming post #127 from a second method, which matters more than confirming it from a second person. 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. The answer… Go to post

Everything in post #137 holds. The case it does not cover is the one I have.

Since Melanocortin agonists keeps coming up, it should probably be a maintained page rather than a recurring thread. I am happy to draft it if someone with more direct experience will review it.

17 likes in reply to #128 20mo
HO
h.oyelowoTL2Regular25 Nov 2024 · edited#142

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.

If the premise is wrong, everything after it is decoration.

6 likes 20mo

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