Moreover, the content and activity of the antioxidant enzymes GSH-Px (p = 0.059) and CAT (p < 0.01) decreased in the HF group compared to the Con group, while GABA supplementation increased the levels of GSH-Px and CAT compared to the HF group (p < 0.05) (Figure 3B,C). Here, CAT is linked to hydrops fetalis.