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Polychlorinated biphenyls (PCBs) are a class of biologically active, highly stable compounds. Exposure risks include consumption of fatty fish, meat, dairy products and human breast milk, as well as environmental and occupational settings. Numerous reports have described PCB-dependent adverse effects on human fetal growth, including increased risk for IUGR, changes in endocrine function and hormone...
Amnion is the innermost layer of the fetal membrane and has been suggested to regulate the volume of amniotic fluid via the amniotic epithelium. The transepithelial pathway is generally restricted by tight junctions (TJs). Thus far, human amniotic TJs have not been identified. In this study, we determined whether the human amniotic epithelium contains TJs. Reverse transcription polymerase chain reaction...
A feeder-independent cloned trophoblast cell line, HTS-1, was established from a mature placenta of Shiba goat (Capra hircus). During the growth phase, single HTS-1 cells exhibited ruffled membranes or lamellipodia often accompanied by elongated cell shape, indicating highly motile nature of the cells. At or near confluence, HTS-1 cells formed monolayers with few sign of cellular overlapping. Binucleate...
Complete hydatidiform mole and coexistent fetus (CMCF) is a rare occurrence and is associated with an increased risk of persistent gestational trophoblastic diseases. The aim of this study was to reveal a potential risk factor and to determine optimum management of CMCF cases. Molar tissues are cytogenetically divided into two types, homozygous and heterozygous. The molar tissue of our case showed...
A quantitative study on the effects of placental senescence on mitochondrial DNA (mtDNA) was carried out by measuring mitochondrial gene mutation, levels of mRNA for the cytochrome c oxidase subunit I (COI) and of mtDNA in normal placental tissues at different stages. Deleted mtDNA, the expression of COI in mitochondria and the amounts of mtDNA per cell were examined by the polymerase chain reaction,...
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