2.4 Sample preparation For LCQTOF-MS/MS analysis, 1 mg of powder or homogenized tablet was dissolved or extracted using 5 mL of a 1:1:1 (v/v/v) mixture of water/methanol/acetonitrile, assisted by ultrasonication for 10 min, and afterwards filtered by a Whatman 0.2 m pore size polytetrafluoroethylene (PTFE) filter medium (GE Healthcare, Chicago, IL, United States)
Lipid peroxy radicals mediated tyrosine dimerization and nitration in membranes
Additionally, upregulation of lipid peroxidation and inflammatory responses in retinal vascular ECs prompt EC dysfunction and increase permeability (18)
Second, important differences among GLP-1 receptor agonists themselves remain insufficiently explored
In parallel, copper sulfate (CuSO 4 ) (Sigma-Aldrich/Merck) and zinc sulfate (ZnSO 4 ) (Sigma-Aldrich/Merck) were added in a final concentration of 50 M for 6 h
Semaglutide (sold as Ozempic and Wegovy) and dulaglutide (Trulicity) act on the GLP-1 receptor