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  • Title: Induction of endometrial peroxidase synthesis and secretion by estrogen and estrogen antagonist.
    Author: Churg A, Anderson WA.
    Journal: J Cell Biol; 1974 Aug; 62(2):449-59. PubMed ID: 4426915.
    Abstract:
    Synthesis of peroxidase was induced in the uterine epithelium of immature rats by multiple doses over a 24-96-h period of either 17 beta-estradiol, the estrogen-antagonist Parke-Davis CI-628, or a combination of estradiol plus antagonist. Endogenous peroxidase activity first appeared in the cisternae of the rough endoplasmic reticulum of surface epithelial and glandular cells within 24-48 after the initial injection. Uterine peroxidase activity was also visible in the cisternae of the Golgi apparatus, in Golgi-derived secretory granules, and within the uterine and glandular lumen. Some cells of the epithelium produced little or no peroxidase, even after 96 h. Whereas the antagonist appeared to induce synthesis and secretion of peroxidase, neither the antagonist alone nor the combined treatment (estradiol plus antagonist) reproduced the estradiol-mediated growth in organ size and increased lumen diameter.
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