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- W2056192937 abstract "Ask where the maternofetal interface is and placental biologists will tell you, the syncytiotrophoblast and extravillous cytotrophoblasts. While correct, this is not full extent of the maternofetal interface. Trophoblast debris that is extruded into the maternal blood in all pregnancies expands the maternofetal interface to sites remote from the uterus. Trophoblast debris ranges from multinucleated syncytial nuclear aggregates to subcellular micro- and nano-vesicles. The origins of trophoblast debris are not clear. Some propose trophoblast debris is the end of the life-cycle of the trophoblast and that it results from an apoptosis-like cell death, but this is not universally accepted. Knowing whether trophoblast debris results from an apoptosis-like cell death is important because the nature of cell death that produced trophoblast debris will influence the maternal responses to it. Trophoblast debris is challenging to isolate from maternal blood making it difficult to study. However, by culturing placental explants in Netwells™ we can readily harvest trophoblast debris from beneath the Netwells™ which is very similar to debris that has been isolated from pregnant women. We have found that trophoblast debris from normal placentae shows markers of apoptosis and is phagocytosed by macrophages or endothelial cells, producing a tolerant phenotype in the phagocyte. Whereas, when we culture normal placental explants with factors such as antiphospholipid antibodies (a strong maternal risk factor for preeclampsia), or IL-6 (which is found at increased levels in the sera of preeclamptic women), the death process in the syncytiotrophoblast changes, such that the trophoblast debris becomes more necrotic. Phagocytosis of this necrotic debris leads to activation of endothelial cells. Trophoblast debris greatly expands the maternofetal interface and the nature of that debris is likely to strongly influence the responses of the maternal vascular and immune systems to the debris." @default.
- W2056192937 created "2016-06-24" @default.
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- W2056192937 date "2014-02-01" @default.
- W2056192937 modified "2023-10-12" @default.
- W2056192937 title "Review: Where is the maternofetal interface?" @default.
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- W2056192937 doi "https://doi.org/10.1016/j.placenta.2013.10.014" @default.
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