Sex and estrogen levels affect hepatokine mRNA levels in the liver of mice under physiological conditions. (A,B) Heatmaps reporting as Log2 fold change (FC) the mRNA levels of the most relevant hepatokines known to be involved in NAFLD from RNA-Seq analysis performed in the livers of males (MAL) and females (FEM) at low and high levels of estrogens (A) and in the livers of sham-operated (SHAM) and ovariectomized (OVX) female mice (B) (n = 4). (C) Cluster analysis performed by plotting the Log2 FC of fertile females (FEM) over males (MAL) against the Log2 FC of OVX over SHAM females. Enho, adropin; Inhbe, inhibin subunit beta E; Igfbp1, insulin like growth factor binding protein 1; Tsku, tsukushi. (D,E) Estrogen-responsive elements (EREs) identified in the region −/+1000 around TSS of Enho, Inhbe, Igfbp1, and Tsku (EREs are shown as red blocks).