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- W2095020470 abstract "Multiparity status has been found to bring beneficial effects both to the maintenance of pregnancy and to the offspring; however, these effects have not been fully explained. We have previously reported that placentae obtained from multiparous females belonging to a syngeneic mouse crossbreeding showed an important increase in the number of placental macrophages, suggesting that they might constitute a protective subpopulation. Taking into account that macrophage-colony stimulating factor (M-CSF) and granulocyte-colony stimulating factor (G-CSF) have proved to modulate macrophage activity and that both factors and/or their receptors have been found at feto-maternal interface, in this paper we analyzed the presence of M-CSF and G-CSF in placental tissue employing the same multiparity mouse model in order to investigate the influence of parity status on local immunoregulation factors of macrophage activity.Three groups of mice (CBA/J x CBA/J) were analyzed: Primiparous Young, 3.0 +/- 0.5 months old (PY); Primiparous Old, 8.5 +/- 0.5 months old (PO) and Multiparous Old, 8.5 +/- 0.5 months old, with three to four previous pregnancies (MO). The presence of M-CSF and G-CSF in placental tissue was analyzed by immunohistochemistry. Cytokeratin (CK) and vimentin (VIM) expression and PAS staining were also studied.The three groups showed a similar immunostaining pattern for M-CSF in the whole placental trophoblast, while the expression of G-CSF was significantly higher only in the spongy zone in the MO group. Furthermore, all the MO placentae showed 5-11 layers of cells adjacent to the decidua, where G-CSF and M-CSF were highly detected. Conversely, they constituted a thin layer in PY and PO placentae. These cells were proved to be CK(+) and VIM(-) thus demonstrating their trophoblast origin. In addition, the layers closer to the decidua were also PAS+ suggesting that they could be interstitial cells, a type of invading trophoblast.In our mouse model, we observed an increase in the expression of G-CSF in placental spongiotrophoblast cells in multiparous females, which have been previously proposed as progenitors of the interstitial cells. Furthermore, this is the first report that indicates that parity status increases trophoblast invasion inducing a proliferative effect of the invading cells on the maternal tissue. We suggest that M-CSF and G-CSF secreted by these invading cells could favor the recruitment of macrophages to the trophoblast and might modulate their activity inducing a switch to a protective, non-inflammatory population." @default.
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- W2095020470 date "2005-10-07" @default.
- W2095020470 modified "2023-09-30" @default.
- W2095020470 title "Comparative Immunohistochemical Study of M-CSF and G-CSF in Feto-Maternal Interface in a Multiparity Mouse Model" @default.
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- W2095020470 doi "https://doi.org/10.1111/j.1600-0897.2005.00317.x" @default.
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