“…In animal models three GLP-1-induced pathways have been proposed; proliferation in β-cells, inhibition of β-cells, and enhanced differentiation of adult stem cells in the ductal pancreatic epithelium. This could lead to chronic pancreatic damage, inflammation of pancreatic acinar and ductal cells, increased formation of dysplastic pancreatic intraepithelial neoplasia lesions and an increase in pancreatic weight 2,4,5,8,[30][31][32][33][34] . GLP-1RA-dependent effects on β-cell proliferation include activation of phosphatidylinositol-3 (PI3) kinase, protein kinase B (AKT), mitogen-activated protein kinase (MAPK), protein kinase C, the src kinase, and the epidermal growth factor receptor (EGFR) 6,35,36 ; however, the exact mechanism by which GLP-1RA activates the PI3 kinase signalling pathway remains unknown 6 .…”