In conclusion, OA activates GPR40-PLC-calcium pathway to increase the expression of PPARδ and PPARδ further decreased the expression of PTEN to regulate insulin sensitivity in hepatic steatosis.
Pharmacological activation of peroxisome proliferator-activated receptor δ improves insulin resistance and hepatic steatosis in high fat diet-induced diabetic mice.
Furthermore, overexpression of PPARdelta by intravenous infection with the PPARdelta adenovirus induced the expression of Insig-1, suppressed SREBP-1 activation, and, consequently, ameliorated hepatic steatosis in obese db/db mice.