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  • Title: VEGF, bFGF and their receptors at the fetal-maternal interface of the rhesus monkey.
    Author: Wei P, Yu FQ, Chen XL, Tao SX, Han CS, Liu YX.
    Journal: Placenta; 2004; 25(2-3):184-96. PubMed ID: 14972451.
    Abstract:
    Placental development involves trophoblast outgrowth and a coordinated angiogenesis in the implantation site. In this study, expression of angiogenic factors, vascular endothelial growth factor (VEGF), basic fibroblast growth factor (bFGF), VEGF receptors, kinase insert domain-containing region (KDR), and bFGF receptor Flg was characterized at the maternal-embryonic boundary of the rhesus monkey on Day 17, 19, 28 and 34 of pregnancy. Immunohistochemistry and in situ hybridization showed that VEGF mRNA and protein were both strongly expressed in the cytotrophoblast, the blood vessels and certain immunocytes. These sites were also immunopositive for KDR. In addition to the vascular endothelial cells and the vascular smooth muscle cells, the protein and mRNA for bFGF were also detected in cyto/syncytiotrophoblast bilayer, whereas the staining for Flg protein was mainly localized in the cytotrophoblast cells. The staining degree of VEGF and bFGF in the villi gradually decreased with the development of placenta. Strong expression of bFGF, Flg and KDR was also detected in the decidual cells. These data suggest that VEGF and bFGF may be involved in angiogenesis, cytotrophoblast proliferation and migration during early stage of placentation in the rhesus monkey.
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