Plasma biochemical analysis (Figure 3A) showed that the HF group had significantly elevated levels of XOR activity, uric acid (UA), triglycerides (TG), total cholesterol (T-CHO), low-density lipoprotein cholesterol (LDL-C), aspartate aminotransferase (AST), and alanine aminotransferase (ALT) compared to the control group (all p < 0.05). Here, XDH is linked to hydrops fetalis.