SOD2 and hydrops fetalis: Similar results were found in Sod1 (-76%, p = 0.002) and Sod2 enzymes (-58%, p = 0.015), as both showed significant reductions in the HF when compared with the C group, but in HFE, these enzymes were significantly increased (Sod1: +159%, p = 0.02; Sod2: +159%, p = 0.029) in comparison with the HF group.