Topic summary

About the Receptor biology category

Pharmacology › Receptor biology amylin analogues semaglutide tirzepatide Pinned Wiki

This is a generated summary. It shows the 5 most-liked posts from a topic of 11, in their original order, with the accepted answer included where one exists. It is a reading aid and it will miss nuance — the full topic is the record.

owen.bradyTL4 Moderator5 Jun 2026#1

Community wiki post. Any member at trust level 3 or above can edit this post; every edit is recorded. Last edited by owen.brady on 6 Jun 2026.

6 Jun 2026 — owen.brady: Initial wiki conversion.

Editors: owen.brady, mira.patel, hana.sato

Staff post. Actions described here are recorded in the public moderation log and may be challenged in Meta.

GLP-1, GIP, glucagon and amylin receptor signalling, bias, desensitisation and central versus peripheral action.

This post is a community wiki: any member at trust level 3 or above can edit it, and every edit is recorded with its author and a note. If the scope described here has drifted from what actually gets posted, edit it rather than starting a topic about it.

What belongs here

Questions specific to receptor biology, with the units and the context stated.
Reports and datasets, with the collection method stated.
Disagreement about the substance, conducted in public.

What belongs elsewhere

Anything urgent belongs in Safety, immediately, and not here.
Anything about how this site works belongs in Meta.
Requests for a maintained page belong in Wiki requests.

Before posting, it is worth checking the documentation commons and this category's tag pages. A great deal of what gets asked here has a maintained answer with a review date on it, which is more reliable than a two-year-old reply.

16 likes 2mo

IsaksenTL3Regular18 Jun 2026#4

Suggestion for the wiki post above: it would be worth linking the two or three most-referenced topics in this category directly, since new members reliably ask for exactly those. Happy to make the edit myself if nobody objects, with a revision note.

20 likes 1mo

h.brandtTL2 Moderator27 Jun 2026#7

Cross-reactivity and selectivity: the compounds are not perfectly selective for their target receptors. Semaglutide has some activity on other receptors; tirzepatide activates both GLP-1 and GIP with different affinities. The off-target effects are part of the overall pharmacology.

28 likes 1mo

r.venkatesanTL3Wiki editor30 Jun 2026#8

Isaksen, post #4: Suggestion for the wiki post above: it would be worth linking the two or three most-referenced topics in this category directly, since new members reliably ask for exactly those. Happy to make the edit myself if nobody objects, with a revision note. Go to post

Central versus peripheral action: GLP-1 agonism works through both central nervous system effects (appetite) and peripheral effects (gastric motility, insulin). The balance is not fully characterised.

14 likes in reply to #4 28d

f.kimaniTL2 Moderator7 Jul 2026#11

Glucagon receptor agonism: glucagon receptor agonism increases energy expenditure and promotes hepatic fat oxidation. The mechanism is distinct from GLP-1 and GIP agonism and the clinical consequences are still being characterised.

29 likes 20d

Read the full topic (11 posts)

This topic was referenced in

Biased agonism: a real phenomenon, an over-used explanationPharmacology › Receptor biology · 135 replies

Suggested topics

Topic	Participants	Replies	Views	Activity
Amylin receptor signalling and satiety — what changed since Pharmacology › Receptor biology tirzepatide retatrutide long read amylin analogues On the subject in the title: Amylin receptor signalling and satiety — what changed since Working notes rather than a conclusion. A documentation question rather than an analytical one. I have a certificate in…	+73	78	3.5k	2mo
Glucagon receptor agonism in a weight-loss compound Pharmacology › Receptor biology semaglutide retatrutide tirzepatide Pinned On the subject in the title: Glucagon receptor agonism in a weight-loss compound Working notes rather than a conclusion. Posting the method first, because I know what the first three replies will otherwise…		2	5.1k	20mo
Amylin receptor signalling and satiety Pharmacology › Receptor biology tirzepatide semaglutide amylin analogues Wiki Amylin receptor signalling and satiety Writing it up because I had to work it out twice and would rather nobody else did. A documentation question rather than an analytical one. I have a certificate in front…	+22	26	1.8k	9mo
Vagal afferents and the gut-brain pathway Pharmacology › Receptor biology semaglutide tirzepatide retatrutide long read On the subject in the title: Vagal afferents and the gut-brain pathway Working notes rather than a conclusion. A documentation question rather than an analytical one. I have a certificate in front of me that…	+5	9	44k	13mo
Receptor desensitisation as a tolerance hypothesis, and its weak evidence Pharmacology › Receptor biology tirzepatide retatrutide amylin analogues long read Under review Receptor desensitisation as a tolerance hypothesis, and its weak evidence — setting out what I have, and where I think it stops being reliable. A documentation question rather than an analytical one. I have a…	+52	57	25k	just now

Related topics — sharing the tags amylin analogues, semaglutide, tirzepatide

Topic	Participants	Replies	Views	Activity
How the published trials escalated, tabulated side by side Practice › Dosing & titration worked example semaglutide titration dose reduction Solved Closed The question in the title: How the published trials escalated, tabulated side by side I will give what I have already checked below so nobody repeats it. A question about technique rather than about dose. I…	+4	8	4.2k	5mo
Second pass at: Semaglutide and alcohol: what is actually documented Compounds › Semaglutide semaglutide type 2 diabetes effect size randomised trial Closed Second pass at: Semaglutide and alcohol: what is actually documented Writing it up because I had to work it out twice and would rather nobody else did. I have seen STEP 1 ( N Engl J Med , 2021) cited in…	+15	19	4.4k	13mo
Micro-titration: a disputed topic, argued properly Practice › Dosing & titration titration dose reduction worked example tirzepatide Solved Wiki Micro-titration: a disputed topic, argued properly Writing it up because I had to work it out twice and would rather nobody else did. A question about technique rather than about dose. I have been doing the…	+99	110	61k	2d
Follow-up: Why appetite effects are mostly central Pharmacology › Receptor biology tirzepatide retatrutide semaglutide long read Closed Asking directly, because I could not find a straight answer: Why appetite effects are mostly central A documentation question rather than an analytical one. I have a certificate in front of me that reports a…	+86	90	61k	9mo
Revisiting: Is there a ceiling dose beyond which semaglutide stops adding benefit? Compounds › Semaglutide type 2 diabetes randomised trial semaglutide SELECT trial Solved Revisiting: Is there a ceiling dose beyond which semaglutide stops adding benefit? — that is the question, and I have not found it answered plainly anywhere I have looked. Session topic: SURMOUNT-4 ( JAMA ,…	+5	9	30k	8d