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  • Title: Expression of cellCAM-105 in the apical surface of rat uterine epithelium is controlled by ovarian steroid hormones.
    Author: Svalander PC, Odin P, Nilsson BO, Obrink B.
    Journal: J Reprod Fertil; 1990 Jan; 88(1):213-21. PubMed ID: 2313638.
    Abstract:
    Affinity-purified antibodies to cellCAM-105, an adhesive cell surface glycoprotein, were used in immunohistochemical investigations of rat uteri at various functional stages: (i) the oestrous, pro-oestrous, metoestrous, and dioestrous stages of the oestrous cycle, (ii) Days 1-8 of normal pregnancy, (iii) delayed implantation, (iv) 18 h after oestrogen reactivation from delay of implantation, and (v) juvenile rats, and normal ovariectomized adults, respectively, before and after experimental injection of progesterone and/or oestrogen. CellCAM-105 was present in the apical zones of the luminal and glandular epithelium cells in a stage-specific and hormone-dependent manner. The results indicate that: (1) steroid hormones are essential for the expression of cellCAM-105 in the uterine epithelial cells; (2) progesterone induces cellCAM-105 expression in the glandular epithelium, and oestrogen induces cellCAM-105 expression in the luminal epithelium; (3) progesterone induces down-regulation of cellCAM-105 from the surface of the uterine luminal epithelium of juvenile rats; (4) cellCAM-105 is absent in the luminal epithelial cells but present in the glandular epithelial cells of the rat uterus at the time of blastocyst implantation.
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