[PDF][PDF] Trophoblast phagocytic program: roles in different placental systems

E Bevilacqua, MS Hoshida… - International Journal …, 2010 - researchgate.net
International Journal of Developmental Biology, 2010researchgate.net
Although not belonging to the class of professional phagocytes, in many species trophoblast
cells exhibit intense phagocytic activity. The complete range of physiological functions of
trophoblast phagocytosis has not yet been fully characterized. Close association between
the trophoblast and nutrition was determined many years ago. Hubrecht (1889) when
proposing for the first time the name trophoblast to the external layer of the blastocyst,
directly established the nutritive significance of this embryonic layer. Indeed, histotrophic …
Abstract
Although not belonging to the class of professional phagocytes, in many species trophoblast cells exhibit intense phagocytic activity. The complete range of physiological functions of trophoblast phagocytosis has not yet been fully characterized. Close association between the trophoblast and nutrition was determined many years ago. Hubrecht (1889) when proposing for the first time the name trophoblast to the external layer of the blastocyst, directly established the nutritive significance of this embryonic layer. Indeed, histotrophic phagocytosis, ie the internalization of maternal cells and secreted materials, is considered an important function of the trophoblast before the completion of the placenta. Recently, however, unexpected characteristics of the trophoblast have significantly enhanced our understanding of this process. Roles in acquisition of space for embryo development, in tissue remodeling during implantation and placentation and in defense mechanisms are highlighting how this cellular activity may be relevant for the maternal-fetal relationship beyond its nutritional function.
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