Both the 2 nM HF and 4 nM HF treatments reduced the expression of IL-17 C by ~ 32.1% and ~ 56.3% (Fig. 7A and B), the levels of p-NF-κB by ~ 21.5% and ~ 46.9% (Fig. 7C and D), and the expression of MMP9 by ~ 34.1% and ~ 61.6% (Fig. 7E and F), respectively. Here, MMP9 is linked to hydrops fetalis.