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Phytochemical AND progestin

M W Laschke, M D Menger
BACKGROUND Angiogenesis, i.e. the development of new blood vessels from pre-existing ones, represents an integral part in the pathogenesis of endometriosis. During the last decade, an increasing number of studies have therefore focused on the anti-angiogenic treatment of the disease. The present review provides a systematic overview of these studies and critically discusses the future role of anti-angiogenic therapy in the multimodal management of endometriosis. METHODS Literature searches were performed in PubMed, MEDLINE and ISI Web of Knowledge for original articles published before the end of March 2012, written in the English language and focusing on anti-angiogenic approaches for the therapy of endometriosis...
November 2012: Human Reproduction Update
Amy Lu, Jacinta C Beehner, Nancy M Czekala, Andreas Koenig, Eileen Larney, Carola Borries
Female reproduction is known to be influenced by food availability and its impact on energetic status. However, emerging evidence suggests that the phytochemical content of food may also be an important factor. Here, we investigated this hypothesis, presenting 20 months of data on fecal progestin (fP) patterns in wild female Phayre's leaf monkeys (Trachypithecus phayrei crepusculus). We examined whether (a) the availability of Vitex (a plant known to contain phytochemicals) might be linked to seasonal fP levels, (b) fP levels were associated with female reproductive performance, and (c) reproductive performance might also be linked with energetic status (as measured by physical condition)...
January 2011: Hormones and Behavior
M E Baker
Albumin, the major serum protein, binds a wide variety of lipophilic compounds including steroids, other lipophilic hormones and various phytochemicals and xenobiotics that bind to receptors for steroids and other lipophilic hormones. Despite albumin's low affinity (K(d) approximately 10(-4) M to 10(-6) M) for these lipophilic compounds, the high concentration of albumin in serum makes this protein a major carrier of steroids and lipophilic hormones and a regulator of their access to receptors. Albumin also functions as a sink for xenobiotics, diminishing the binding of xenobiotics to hormone receptors and other cellular proteins...
October 2002: Journal of Endocrinology
R S Rosenberg, L Grass, D J Jenkins, C W Kendall, E P Diamandis
We have used a tissue culture system based on breast carcinoma cell lines to investigate a large number of naturally occurring compounds and beverages for steroid hormone agonist and antagonist activity. The cell lines used, T-47D and BT-474, produce prostate specific antigen (PSA) upon stimulation with androgens, progestins, glucocorticoids and mineralocorticoids. This biomarker is secreted and can be measured in the tissue culture supernatant with very high sensitivity by an immunofluorometric procedure. Steroid hormone antagonist activity can be assessed with the same system by adding the candidate antagonist first and then stimulating the cells with a known agonist...
July 30, 1998: Biochemical and Biophysical Research Communications
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