title: Elevated expression of PEG10 in human placentas from preeclamptic pregnancies.
abstract: The aim of this study was to determine qualitative and quantitative changes in paternally expressed gene 10 (PEG10) expression in preeclamptic placentas. Placental tissues were obtained immediately after delivery from women with normal pregnancies (n=20) and patients with preeclampsia (n=20). Quantitative real-time RT-PCR, Western blot analysis and immunohistochemistry were used to determine PEG10 gene expression and localization in placental tissues. Compared with the normal group, PEG10 was highly expressed at both mRNA and protein levels in preeclampsia (P<0.05). In immunohistochemical staining, PEG10 was present in the syncytiotrophoblast, cytotrophoblast, endothelial cell and stroma of all placentas. Notably, the intensity of PEG10 expression in the syncytiotrophoblast, cytotrophoblast and stem villi was much higher in preeclampsia than in normal. In conclusion, elevated expression of PEG10 is likely to be involved in the pathophysiology of preeclampsia. Further studies are needed to elucidate the precise role of PEG10 in preeclampsia.
authors.affiliation: Department of Obstetrics, The First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China.
authors.forename: Haiying
authors.initials: H
authors.lastname: Chen
authors.forename: Manni
authors.initials: M
authors.lastname: Sun
authors.forename: Ge
authors.initials: G
authors.lastname: Zhao
authors.forename: Jing
authors.initials: J
authors.lastname: Liu
authors.forename: Wenyan
authors.initials: W
authors.lastname: Gao
authors.forename: Si
authors.initials: S
authors.lastname: Si
authors.forename: Tao
authors.initials: T
authors.lastname: Meng
mesh_terms: D000328:Adult; D051017:Apoptosis Regulatory Proteins; D004268:DNA-Binding Proteins; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D010920:Placenta / Q000378:metabolism*; D011225:Pre-Eclampsia / Q000235:genetics* / Q000378:metabolism*; D011247:Pregnancy; D011506:Proteins / Q000032:analysis / Q000235:genetics* / Q000378:metabolism*; D016601:RNA-Binding Proteins; D060888:Real-Time Polymerase Chain Reaction
chemical_list: D051017:Apoptosis Regulatory Proteins; D004268:DNA-Binding Proteins; C432965:PEG10 protein, human; D011506:Proteins; D016601:RNA-Binding Proteins