NFE2L2 and gestational diabetes: We also investigated the potential of OS/IFM-related microRNAs—miR-146a-5p, miR-155-5p, and miR-21-5p—as indicators of OS in GDM by correlating their expression with the activity of antioxidant enzymes in the circulation, NRF2 expression, and levels of several markers of oxidative damage of biomacromolecules.