GPR119 is involved in insulin secretion and its activation was shown to reduce food intake, suggesting a metabolic function.
GPR119 is predominantly expressed in the pancreas and the gastro-intestinal tract as well as in the brain.
GPR119 is involved in food intake and glucose homeostasis (keeping blood glucose levels within acceptable limits). OEA is actually the strongest endogenous activator of GPR119 and was shown to reduce food intake and weight gain in rodents via PPARα and TRPV1 (Overton et al., 2006).
Overton, H.A., Babbs, A.J., Doel, S.M., Fyfe, M.C.T., Gardner, L.S., Griffin, G., Jackson, H.C., Procter, M.J., Rasamison, C.M., Tang-Christensen, M., et al. (2006). Deorphanization of a G protein-coupled receptor for oleoylethanolamide and its use in the discovery of small-molecule hypophagic agents. Cell Metab. 3, 167–175.