Abstract:Objective To explore the relationship between serum levels of vascular endothelial growth factor (VEGF) and pregnancy-associated plasma protein A (PAPP-A) and pregnancy outcomes in patients with preeclampsia (PE).Methods A total of 100 PE patients admitted to Hainan Modern Women and Children's Hospital from March 2020 to March 2023 were selected and divided into a PE group (n = 68) and a severe PE group (n = 32) based on the disease severity. Additionally, 40 pregnant women without hypertensive disorders of pregnancy undergoing health checkup during the same period were selected as the control group. The data were collected and serum levels of VEGF, PAPP-A, C-C motif chemokine ligand-17 (CCL17) as well as relative expression levels of forkhead box protein A1 (FOXA1) and HIPK3 were detected. The multivariable stepwise Logistic regression model was used to identify the risk factors for poor pregnancy outcomes in PE patients.Results According to different pregnancy outcomes, 100 PE patients were divided into a poor outcome group (n = 38) and a good outcome group (n = 62). The serum levels of VEGF and CCL17 and expressions of FOXA1 mRNA and HIPK3 were higher, and the serum level of PAPP-A was lower in the control group than those in the PE group and the severe PE group (P < 0.05). The serum levels of VEGF and CCL17 and expressions of FOXA1 mRNA and HIPK3 were higher, and the serum level of PAPP-A was lower in the PE group than those in the severe PE group (P < 0.05). The serum levels of VEGF and CCL17 and expressions of FOXA1 mRNA and HIPK3 were higher, and the serum level of PAPP-A was lower in the good outcome group than those in the poor outcome group (P < 0.05). The multivariable stepwise Logistic regression analysis showed that levels of VEGF [O^R = 1.942 (95% CI: 1.376, 2.741) ], PAPP-A [O^R = 2.073 (95% CI: 1.405, 3.059) ], CCL17 [O^R = 2.145 (95% CI: 1.432, 3.213) ], FOXA1 mRNA [O^R = 1.878 (95% CI: 1.352, 2.609) ], and HIPK3 [O^R = 1.793 (95% CI: 1.284, 2.504) ] were independent factors contributing to poor pregnancy outcomes in PE patients (P < 0.05). The receiver operating characteristic (ROC) curve analysis exhibited that cut-off values of serum levels of VEGF, PAPP-A and CCL17 and expressions of FOXA1 mRNA and HIPK3 for predicting adverse pregnancy outcomes in PE patients were 260.050 pg/mL, 735.250 μg/mL, 426.505 ng/L, 0.655 and 0.415, with the sensitivities being 67.7% (95% CI: 0.593, 0.726), 69.4% (95% CI: 0.631, 0.743), 62.9% (95% CI: 0.584, 0.695), 75.8% (95% CI: 0.714, 0.803) and 88.7% (95% CI: 0.815, 0.911), and the specificities being 86.8% (95% CI: 0.822, 0.913), 63.2% (95% CI: 0.575, 0.695), 86.8% (95% CI: 0.823, 0.927), 94.1% (95% CI: 0.908, 0.981) and 97.4% (95% CI: 0.943, 0.994), respectively. Spearman correlation analysis demonstrated that serum levels of VEGF and CCL17 and expressions of FOXA1 mRNA and HIPK3 were negatively correlated with the disease severity (rs = -0.374, -0.512, -0.435 and -0.511, all P < 0.05) and pregnancy outcomes (rs = -0.412, -0.446, -0.463 and -0.492, all P < 0.05) of PE patients, and the serum level of PAPP-A was significantly correlated with the disease severity and pregnancy outcomes of PE patients (rs =0.487 and 0.503, both P < 0.05).Conclusions The serum levels of VEGF, PAPP-A and CCL17 as well as the expressions of FOXA1 mRNA and HIPK3 are aberrant in PE patients, and are significantly correlated with the disease severity and the pregnancy outcome. Besides, they are of certain predictive value for pregnancy outcomes.