COL1A1 and fatty liver disease: Gene expression was performed to assess markers of hepatic oxidative stress, fatty liver disease, and fibrosis, namely, estrogen receptor alpha (Esr1), catalase (Cat), superoxide dismutase 2 (Sod2), glutathione peroxidase 1 (Gpx1), collagen 1a1 (Col1a1), and peroxisome proliferator-activated receptor gamma coactivator 1-alpha (Pgc-1a).