Trojansk häst-metod i läkemedel mot fetma ökar viktnedgången hos möss

Forskare har utvecklat en hybridbehandling mot fetma som använder GLP-1- och GIP-signaler för att leverera en metabolisk förstärkare direkt in i cellerna. Tidiga tester på möss visade större viktnedgång och bättre blodsockerkontroll än standardbehandlingar. Metoden syftar till att minska biverkningar genom att begränsa läkemedlets verkan till specifika målområden.

Forskare vid Helmholtz Munich skapade föreningen genom att koppla samman en inkretinbaserad molekyl med lanifibranor, en pan-PPAR-agonist. Designen fungerar som en trojansk häst, vilket gör att det extra läkemedlet kan ta sig in i cellerna via GLP-1- eller GIP-receptorer innan det aktiverar brytare som reglerar fett- och sockeromsättningen inne i cellkärnan.

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People who lose weight using GLP-1 medications such as Ozempic and Wegovy may be judged more negatively than those who lose weight through diet and exercise — and even more negatively than people who do not lose weight at all — according to a new study led by Rice University psychologist Erin Standen.

Three Cochrane reviews commissioned by the World Health Organization evaluate GLP-1 receptor agonists like tirzepatide, semaglutide, and liraglutide for weight loss in people with obesity. The drugs show substantial weight reduction compared to placebo, but researchers note limitations in long-term data and industry funding influences. Side effects such as nausea are common, raising questions about broader access and safety.

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An investigation by India Today highlights how weak enforcement of regulations allows easy access to prescription-only weight-loss drugs in India, leading to increased misuse.

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Researchers in Barcelona report that the lipid drug pemafibrate and the blood-pressure medicine telmisartan reduced diet-induced liver fat in rats and in a zebrafish model of fatty liver disease, with a half-dose combination performing as well as full doses of either drug alone. The work, published in Pharmacological Research, also describes a role for the PCK1 protein in telmisartan’s liver effects and argues that clinical trials would be needed to confirm any benefit in people.

University of Utah scientists report that a radical SAM enzyme known as PapB can join the ends of certain therapeutic peptides to form stable, ring-shaped structures. In experiments described in ACS Bio & Med Chem Au, the enzyme macrocyclized GLP-1-like peptides—including versions containing nonstandard amino acids found in some modern incretin drugs—an approach the researchers say could help make GLP-1 medicines such as semaglutide (Ozempic and Wegovy) more resistant to breakdown.

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