New-onset postpartum preeclampsia: epigenetic mechanism and prediction.
Journal of Maternal-Fetal & Neonatal Medicine
OBJECTIVE: Placental cytosine (CpG) methylation was measured to predict new-onset postpartum preeclampsia (NOPP) and interrogate its molecular pathogenesis.
METHODS: NOPP was defined as patients with a new diagnosis of postpartum preeclampsia developing ≥48 h to ≤6 weeks after delivery with no prior hypertensive disorders. Placental tissue was obtained from 12 NOPP cases and 12 normotensive controls. Genome-wide individual cytosine (CpG) methylation level was measured with the Infinium MethylationEPIC BeadChip array. Significant differential methylation (NOPP vs. controls) for individual CpG loci was defined as false discovery rate (FDR)
RESULTS: There were 537 (in 540 separate genes) significantly (FDR
CONCLUSIONS: There was significant placental epigenetic dysregulation in NOPP. NOPP shared both common and unique molecular pathways with classic preeclampsia. Finally, we have identified novel potential biomarkers for the early post-partum prediction of NOPP.
Kim SK, Vishweswaraiah S, Macknis J, Yilmaz A, Lalwani A, Mishra NK, et al. [Ogunyemi D, Radhakrishna U, Bahado-Singh RO] New-onset postpartum preeclampsia: epigenetic mechanism and prediction. J Matern Fetal Neonatal Med. 2022 Dec;35(25):7179-7187. doi: 10.1080/14767058.2021.1946504. PMID: 34374309.