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Proteomic Biomarkers of Intrahepatic Cholestasis of Pregnancy
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Proteomic Biomarkers of Intrahepatic Cholestasis of Pregnancy
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Journal Article
Proteomic Biomarkers of Intrahepatic Cholestasis of Pregnancy
2024
Overview
Intrahepatic cholestasis of pregnancy (ICP) is a pregnancy-specific liver disease, which can lead to adverse fetal outcomes, including preterm labor and intrauterine death. The pathogenesis of ICP is still unclear. We hypothesized that pathological index leads to abnormal placenta changes in ICP. Investigation of these differences in protein expression in parallel profiling is essential to understand the comprehensive pathophysiological mechanism underlying ICP. The present study screened differentially expressed proteins (DEPs) as novel diagnostic markers for ICP. Proteomic profiles of placental tissues from 32 ICP patients and 24 healthy volunteers (controls) were analyzed. Our founding was valid by following western blotting and immunohistochemistry staining, respectively. The association of the key protein expression with clinicopathological features of ICP was further analyzed. A total of 178 DEPs were identified between the ICP and control groups. Functional enrichment analysis showed these proteins were significantly enriched in the PPAR singling pathway by KEGG and PPARα/RXRα activation by IPA. Apolipoprotein A2 (APOA2) was the only upregulated protein, which uniquely identified in ICP groups and related to both pathways. Validation of western blotting and immunohistochemical staining analysis showed significantly higher APOA2 expression in the ICP group than in the control group. Furthermore, the expression of APOA2 is associated with clinicopathological features in ICP groups. Receiver operating characteristic (ROC) curve analyses showed that the AUC of APOA2 was 0.8984 (95% confidence interval (CI): 0.772–1.000). This study has identified up-regulated APOA2 associated with PPAR singling pathway and PPARα/RXRα activation in ICP. Thus, APOA2 may be involved in ICP pathogenesis, serving as a novel biomarker for its diagnosis.
Publisher
Springer International Publishing
Subject
/ Apolipoprotein A-II - metabolism
/ Cholestasis, Intrahepatic - diagnosis
/ Cholestasis, Intrahepatic - metabolism
/ Female
/ Humans
/ Medicine
/ Obstetrics/Perinatology/Midwifery
/ Pregnancy Complications - diagnosis
/ Pregnancy Complications - metabolism
/ Reproductive Biology: Original
