choristoma/progesterone

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[Histologic examination and immunohistochemical analysis of estrogen and progesterone receptors of eutopic and ectopic endometrium in patients with endometriosis].

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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

The Effect of Imbalanced Progesterone Receptor-A/-B Ratio on Gelatinase Expressions in Endometriosis.

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Background

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

Immunohistochemical characterization of proliferation, oestrogen receptor and progesterone receptor expression in endometriosis: comparison of eutopic and ectopic endometrium with normal cycling endometrium.

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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

Progesterone Resistance in Endometriosis: an Acquired Property?

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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 action in endometrial cancer, endometriosis, uterine fibroids, and breast cancer.

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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

Paired-box gene 2 is down-regulated in endometriosis and correlates with low epidermal growth factor receptor expression.

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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

Medical treatments for endometriosis.

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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

Steroid and cytokine regulation of matrix metalloproteinase expression in endometriosis and the establishment of experimental endometriosis in nude mice.

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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

Kinetic analysis of 3 beta-hydroxysteroid dehydrogenase activity in microsomes from complete hydatidiform mole.

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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

The endometrium in adenomyosis.

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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

Infiltrating ductal carcinoma of the vulva.

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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.

Low aromatase activity in microsomes from complete hydatidiform mole.

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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

Fractalkine/CX3CR1 is involved in the pathogenesis of endometriosis by regulating endometrial stromal cell proliferation and invasion.

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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

[Pelvic pain and endometriosis].

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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,

DNA methylation patterns of steroid receptor genes ESR1, ESR2 and PGR in deep endometriosis compromising the rectum.

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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

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