Content of Free Fetal DNA in Maternal Blood and Expression of DNA Recognition Receptors ZBP-1 in Placental Tissue in Preeclampsia and Preterm Labor
| Autor: | A O Karapetian, N. V. Nizyaeva, А А Sadekova, O. R. Baev, A M Krasniy |
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| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Adult Placenta General Biochemistry Genetics and Molecular Biology Preeclampsia Andrology 03 medical and health sciences 0302 clinical medicine Syncytiotrophoblast Fetus Obstetric Labor Premature Pre-Eclampsia Pregnancy Medicine Humans Receptor Cell damage reproductive and urinary physiology business.industry Trophoblast RNA-Binding Proteins General Medicine DNA medicine.disease Immunohistochemistry female genital diseases and pregnancy complications 030104 developmental biology medicine.anatomical_structure Cell-free fetal DNA embryonic structures Female business 030217 neurology & neurosurgery |
| Zdroj: | Bulletin of experimental biology and medicine. 168(1) |
| ISSN: | 1573-8221 |
| Popis: | We evaluated the content of cell-free fetal DNA in maternal blood and expression of ZBP-1 receptors in the placental tissue of women with uncomplicated pregnancy, preeclampsia, and preterm labor. The study included 16 women with preeclampsia (early and late-onset preeclampsia, 8 cases each), 16 women with preterm labor, and 21 women with uncomplicated pregnancy. The concentration of cell-free fetal DNA was measured by PCR by detecting hypermethylated region of the RASSF1A gene. Immunohistochemistry was performed on paraffin-embedded sections of the placenta samples using primary polyclonal antibodies to ZBP-1. Significant increase in the level of cell-free fetal DNA was found in women with preeclampsia (both early and late-onset form) in comparison with uncomplicated pregnancy. The concentration of cell-free fetal DNA in preterm labor group did not differ from the control group; however, it was significantly lower than in early-onset preeclampsia, but not late preeclampsia. Immunohistochemical study showed higher expression of ZBP-1 in the villus syncytiotrophoblast in early-onset preeclampsia in comparison with that in preterm labor group (p=0.006). Fragments of damaged placental cells, predominantly trophoblast, enter maternal circulation and are the source of cell-free fetal DNA and a potential ligand for ZBP-1, which leads to further cell damage and the formation of a vicious circle. The increase in the content of cell-free fetal DNA in maternal blood and ZBP-1 expression in the syncytiotrophoblast in preeclampsia are interrelated processes reflecting impaired morphofunctional state of the placenta. |
| Databáze: | OpenAIRE |
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