Abstract
Metabolic syndrome is close related to diabetes mellitus type II and visceral obesity, being a serious public health problem. Vildagliptin and sitagliptin, inhibitors of dipeptidyl-peptidase IV (DPP-IV) (EC 3.4.14.5), the enzyme responsible for the cleavage of glucagon-like peptide-1 hormone (GLP-1), as well exenatide, which was developed from Heloderma suspectum lizard venom, and liraglu…