Abstract
To determine the expression and clinical significance of maternal serum pregnancy-associated plasma protein A (PAPP-A) in pregnant women with different degrees of preeclampsia at 11-14 weeks of gestation. The clinical data of 65 pregnant women with preeclampsia admitted to our hospital from January 2020 to October 2022 were retrospectively analysed. Another 45 normal pregnant women who came to our hospital for prenatal examination and delivery during the same period were selected as the healthy control group. The serum contents of PAPP-A, a-fetoprotein (AFP) and free estriol (uE3) in each group were compared. The correlation between PAPP-A and AFP as well as uE3 was analysed by Pearson analysis. The clinical value of serological indexes in diagnosing preeclampsia was analysed using ROC curve. The levels of PAPP-A and uE3 in pregnant women in the preeclampsia group were lower, while the contents of AFP were higher than these in the healthy control group ( p < 0.01). The pregnant women with severe preeclampsia had lower levels of PAPP-A and uE3 with higher levels of AFP compared to these with mild preeclampsia ( p < 0.001). Pearson correlation analysis showed that serum PAPP-A was negatively correlated with AFP ( r = -0.246, p < 0.05) and positively correlated with uE3 ( r = 0.398, p < 0.01) in preeclampsia patients. ROC curve analysis demonstrated that the area under the curve (AUC) of PAPP-A, AFP and uE3 to assist in the diagnosis of preeclampsia was 0.740, 0.738 and 0.806, respectively. The AUC of the combination of PAPP-A, AFP and uE3 to assist in the diagnosis was 0.912, with a sensitivity of 90.38% and a specificity of 80.33%. The clinical assisted diagnostic value of combined detection was high. The serum level of PAPP-A in pregnant women with preeclampsia in the early pregnancy was significantly lower and related to the severity of the disease. The combination of routine detection for AFP and uE3 had a good predictive value for preeclampsia, which was helpful to take relevant interventions to reduce the incidence of preeclampsia as early as possible, and had a positive impact on protecting maternal and infant health.
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