For the GSSCys assays, either GSH was varied between 50 M and 2.0 mM at fixed GSSCys concentrations (25, 50, 100 and 150 M) or GSSCys was varied between 25 and 200 M at fixed concentrations of GSH (0.05, 0.1, 0.2, 0.3 and 1.0 mM for ScGrx7 or 0.3, 0.5, 1.0 and 2.0 mM for PfGrx)
Moreover, sex-dependent differences in the effects of GLP-1 receptor agonists have been reported clinically, with some evidence suggesting greater weight-loss responses and potentially different pharmacokinetic profiles in women and men (Yang et al., 2025), whereas preclinical studies have shown stronger suppression of alcohol self-administration and reinstatement in males, with females exhibiting less pronounced behavioral effects (Daz-Megido and Thomsen, 2023)
Scientific challenges are only fuel as Metsera pushes toward once monthly GLP-1 2
So when performing an IPGTT after 30 min of the dosing, the native peptide 1 was already inactive while hybrid 14 demonstrated full activity as predicted again from the blood glucose study