choristoma/progesterone

OBJECTIVE To study the differences of histologic dating and steroid receptors between ectopic and eutopic endometrium in patients with endometriosis. METHODS Histologic examinations were done on eutopic and ectopic endometrium in 28 patients with pelvic endometriosis, and estrogen and progestrone

Gelatinases degrade extracellular matrix (ECM) components to allow for physiological remodeling and contribute to pathological tissue destruction in endometriosis. It is known that the function of gelatinases is resistant to suppression by progesterone in

Recent studies examining oestrogen and progesterone receptor status and the proliferative activity of endometriotic lesions have produced conflicting reports. This study aimed to clarify the receptor status and proliferative activity of eutopic and ectopic endometrium from women with endometriosis

Endometriosis is the growth of endometrial tissue outside the uterus and is characterized by progesterone resistance and changes in global and progesterone target gene expression. However, the mechanism behind this and whether it is innate, acquired, or present in both the eutopic and ectopic tissue

Progesterone receptor (PR) mediates the actions of the ovarian steroid progesterone, which together with estradiol regulates gonadotropin secretion, prepares the endometrium for implantation, maintains pregnancy, and differentiates breast tissue. Separation of estrogen and progesterone actions in

BACKGROUND Paired-box 2 (Pax2) is involved in the development of the female genital tract and has been associated with endometrial pathologies. The expression of Pax2 is induced by epidermal growth factor (EGF) and estrogens. In the present study, Pax2 expression and regulation were investigated in

Despite the extensive research, endometriosis remains an enigmatic disease as up to now there is no consensus regarding the exact underlying mechanisms which could explain its development and progress. A local environment enriched in estrogens, progesterone resistance, local inflammatory response

The cyclic expression of matrix metalloproteinases (MMPs) by human endometrium has been suggested to play a role in the invasive process necessary to establish endometriosis. The ability of progesterone exposure to inhibit endometrial MMP-3 and MMP-7 expression requires the local action of TGF beta

Microsomes isolated from complete hydatidiform moles (CHM) were able to convert [3H]pregnenolone to [3H]progesterone which indicates the presence of 3 beta-hydroxysteroid dehydrogenase/isomerase (3 beta-HSD) activity. The kinetic parameters found (Km = 0.63 microM and Vmax = 1-3.05 nmol/min/mg of

Eutopic and ectopic endometria of women with adenomyosis show a series of metabolic and molecular abnormalities that increase angiogenesis and proliferation, decrease apoptosis, allow local production of estrogens, create progesterone resistance, and impair cytokine expression. These changes enhance

The eleventh case of primary infiltrating ductal carcinoma of the vulva is reported with a review of the literature. The infiltrating tumor is associated with an intraductal component as well as noninvolved mammary-like glandular tissue (ectopic breast tissue) and metastases to inguinal lymph nodes.

The complete hydatidiform mole (CHM) is characterized by the presence of aberrant placenta, with hyperplasia of cyto- and syncytiotrophoblasts and the absence of maternal genetic information. Steroidogenesis in this condition is, thus, of special interest. In this study we investigated the kinetic

Chemokines have been reported to play a sovereign role in the establishment and progression of endometriosis. Fractalkine is a chemokine that is upregulated in many inflammatory diseases including endometriosis. Fractalkine functions as a chemotactic role for lymphocytes and monocytes. In this

Endometriosis is defined by the presence outside the uterine cavity of tissue histologically and functionally similar to the endometrium. Endometriosis consists of glands and an underlying cytogenic stroma. This ectopic tissue can react to hormonal stimulation: estrogens and progesterone (growth,

Endometriosis is characterized by the presence of endometrial-like tissue located outside the uterine cavity. Recent evidence suggests that endometriosis may be an epigenetic disease, as well as an estrogen-dependent disease. Based on the unique steroid hormone receptor expression profile observed