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Preeclampsia (PE) is a pregnancy-specific complication and it is related to insufficient extravillous trophoblast invasion. To date, the pathophysiology of PE has not yet been fully elucidated. Response gene to complement 32 (RGC32) is a novel cellular protein, and it plays important roles in the regulation of cell differentiation, angiogenesis, migration, and invasion. This study aimed to determine...
Experimental studies showed that genomic imprinting is fundamental in fetoplacental development by timely regulating the expression of the imprinted genes to overlook a set of events determining placenta implantation, growth and embryogenesis.We examined the expression profile of 22 imprinted genes which have been linked to pregnancy abnormalities that may ultimately influence childhood development...
Multiparous ewes received 100% (control, C, n = 13) or 50% (nutrient restricted, NR, n = 14) of NRC dietary requirements from d28-d78 of gestation. On d78, 5 C and 6 NR ewes were necropsied. The remaining 8 C and 8 NR ewes were fed to 100% of NRC from d78-d135 and necropsied. Maternal blood was collected at both necropsies and at weekly intervals for assay of glucose, insulin and leptin. Fetal blood...
Studies using first trimester trophoblast cells may be limited by the inability to obtain patient samples and/or adequate cell numbers. First trimester trophoblast cell lines have been generated by SV40 transformation or similar methods, however, this approach is known to induce phenotypic and karyotypic abnormalities. The introduction of telomerase has been proposed to be a viable alternative for...
Placental infection is associated with adverse fetal outcomes. Toll-like receptors (TLRs) are critical regulators of the innate immune response based on their ability to recognize and respond to pathogen-associated molecular patterns expressed by microbes. To date, cell-type specific expression and regulation of TLR function in human term placenta remains largely unelucidated. The goal of the current...
Plasminogen activator inhibitors (PAIs) play critical roles in regulating cellular invasion and fibrinolysis. An increase in the ratio of PAI-1/PAI-2 in placenta and maternal serum is suggested to result in excessive intervillous fibrin deposition and placental infarction in pregnancies complicated by preeclampsia (PE) and intrauterine growth restriction (IUGR). In the current study we used dual (maternal...
Oncofetal fibronectin (onfFN) is an extracellular matrix (ECM) protein synthesized by tumours and fetal tissue including placenta. The appearance of onfFN and other cellular FNs in cervico-vaginal secretions and maternal blood is associated with adverse pregnancy outcomes. In the current study, we used dual (maternal and fetal) perfusion of human term placentae and primary cultures of syncytiotrophoblasts...
Plasminogen activator inhibitor (PAI)-1 plays a key role in the regulation of fibrinolysis and cellular invasion by virtue of suppression of plasminogen activator function. Excessive production of placental PAI-1 has been associated with aberrant periplacental fibrin deposition in pregnancies complicated by pre-eclampsia (PE) and intrauterine growth restriction (IUGR). In the current study we used...
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