Increased free fatty acids (FFA) are one of the risk factors for type 2 diabetes. FFA also contribute to endothelial dysfunction in both the prediabetes and diabetes conditions. Therefore, FFA are an important link between diabetes and endothelial dysfunction. In therapeutic application, GLP-1 receptor agonists have been implemented to lower blood glucose in diabetes. Here, we investigate the role of the common clinically used GLP-1 receptor agonist lixisenatide in endothelial cells. We demonstrate that lixisenatide...