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This study was designed to examine the biological implication of progesterone receptor (PR) forms A and B mRNA expressions in gynecologic cancers. The ratio of PR form A to form B in mRNA expression was approximately 1:1 in all endometria studied. The predominant expressions of form B transcript occurred in 6 out of 7 cases of advanced stages (stages III(More)
To establish the mechanism of development of ovarian endometriosis from the biological function of the adherens junction, we have investigated the expression of E-cadherin, alpha- and beta-catenin mRNAs in ovarian endometriosis in comparison with that in normal uterine endometrium. The expression of E-cadherin, alpha- and beta-catenin mRNAs in ovarian(More)
This study was designed to determine the expression pattern of progesterone receptor form A (PR-A) and B (PR-B) mRNAs in uterine leiomyoma. Approximately equal expression of PR-A and PR-B mRNAs was designated as type AB and dominant expression of PR-B mRNA as type B. In all cases of normal uterine myometrium, PR mRNA expression was type AB. Alteration to(More)
The migration potential through a basement membrane in an endometrial cancer cell line, such as Ishikawa, HEC-1-A or HHUA cell, in terms of strength, was enhanced by estradiol, but not modified by progesterone, medroxyprogesterone acetate (MPA), danazol or tamoxifen alone, by which estradiol-enhanced migration potential was inhibited. The order of the level(More)
The first step of invasion and metastasis is the detachment of cancer cells in the primary tumor, which is mainly controlled by the function in the adherens junction, consisting of E-cadherin associated proteins (E-cadherin, alpha- and beta-catenins, vinculin, alpha-actinin, and actin). The cell-to-cell aggregation activity and the expressions of(More)
Hot flashes are very common in women in menopause and can have a detrimental effect on quality of life. Hormone therapy (estrogen with or without progestin) remains the gold standard treatment for hot flashes, but concerns for the risk of hormone therapy have resulted in its decline and a demand for nonhormonal treatments with demonstrated efficacy for hot(More)
This study was designed to show the effect of estrogen and androgen on the level of testosterone and dihydrotestosterone specific binding sites (TBS and DHTBS, respectively) and to clarify the implication of androgen receptor mRNA expression to TBS and DHTBS in human uterine tissues. Estrogen mainly induces the increase of TBS and androgen receptor mRNA in(More)
To further understand hormonal carcinogenesis of natural estrogens (estrone, 17 beta-estradiol (E2) and estriol), we determined the expressions of c-fos/jun mRNA, and their oncoproteins (Fos/Jun) with intracellular localization in the uterus of ovarectomized mice treated with these estrogens. Mid-term chronic, as well as short-term assays were examined. Of(More)
Steroid hormones, e.g. progesterone and oestradiol, may be responsible for the production and expression of a variety of angiogenic growth factors present in endometrial tissue. The expression of platelet-derived endothelial cell growth factor (PD-ECGF) in neovascularization after regression of the microvessels in the endometrium was examined. PD-ECGF(More)
Expression of estrogen receptor exon 5 splicing variant (ER-E5SV) mRNA contributes to dominant positive properties and metastatic potential of gynecological cancers. Therefore, in endometriotic endometria, which conserve implantation and tumor-like spreading potentials, the expression of ER-E5SV and estrogen receptor wild type (ER-WT) mRNA was analyzed, to(More)