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Macrophage-Trophoblast Interactions

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During implantation and pregnancy, the invading trophoblast population is within close contact to maternal immune cells, particularly macrophages. During this period, a low level of trophoblast cell death occurs as part of the normal process of tissue renewal. Macrophage engulfment of apoptotic trophoblast cells prevents the release of potentially pro-immunogenic intracellular contents and prevents a maternal immune response. Furthermore, the uptake of apoptotic cells suppresses macrophages from secreting pro-inflammatory cytokines and promotes the release of anti-inflammatory cytokines, thus creating a microenvironment that will promote trophoblast survival and a successful pregnancy. The present chapter will describe some of the approaches used to study the interaction between macrophages and trophoblast cells.
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