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c/glp1science·posted 2 years ago by u/titration_marshal

mechanism — 21 things I got wrong before I got it right

Discussion Receipts ×4 Slow Clap ×2

Posting this as a discussion rather than a claim: mechanism — 21 things I got wrong before I got it right.

Tolerance to the gastric effect develops with continued exposure while the appetite effect largely persists. That single fact explains most of the "it settles but it still works" pattern the side-effect board reports.

Glucose-dependent insulin secretion is why hypoglycaemia risk is low as monotherapy: the effect scales with glycaemia rather than acting unconditionally.

Long half-life in this class comes from structural modification that promotes albumin binding and resists enzymatic degradation. Weekly dosing is a consequence of the molecule, not a convenience decision.

Happy to answer the boring questions. Those are usually the ones worth asking.

1,360 up / 458 down75% upvoted20 commentsid 1xzlky30 Mar 2024

20 comments

6 in this archive, depth 3

best — the order this archive was captured in

u/noor_hovland186 points·2 years ago

The incretin effect is the observation that oral glucose provokes a larger insulin response than intravenous glucose at matched glycaemia, and the difference is mediated by gut hormones. That is the foundation the whole class sits on.

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u/titration_marshalOPmod · c/semaglutide119 points·2 years ago

gastric emptying slows, it does not stop

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u/anya_salgado-11 points·2 years ago

GIP is the arm people argue about because the biology is genuinely unsettled

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u/gustav_vermeulen103 points·2 years ago

Asked a question here that I thought was stupid and got three papers back. Best thread I have been in on this site.

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u/titration_marshalOPmod · c/semaglutide47 points·2 years ago

Does the effect persist with continued dosing or does tolerance develop?

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u/gustav_vermeulen69 points·2 years ago

mechanism explains a direction, not a magnitude

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The mechanism layer: incretin physiology, receptor distribution, gastric emptying, central appetite signalling, glucagon-receptor contribution, amylin co-agonism, and the pharmacokinetics that make weekly dosing possible. Papers get cited by journal and year or they get a [needs source] reply.

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