Hepatitis B Virus (HBV)

Tag: Menstrual Cycle (Page 3)

Quantitative Gonadotropin-Releasing Hormone: MATERIAL AND METHODS(1)

Tissue Collection Endometrial samples were obtained from 35 fertile premenopausal women aged 17-43 yr, undergoing laparoscopic surgery for various benign gynecological reasons. Patients with endometriosis and pelvic inflammatory disease were excluded. birth control pills Written consent from the patients and approval by the Institutional Committee on the use of human subjects in research at Stanford […]

Quantitative Gonadotropin-Releasing Hormone Gene Expression and Immunohistochemical Localization in Human Endometrium(3)

It is well-established that the human placenta produces and secretes GnRH and that this immunoreactive GnRH is present in both cytotrophoblast and syncytiotrophoblast. The placenta produces the highest concentrations of GnRH in the early gestation, before the 15th week, which correlates temporally with hCG production. For this reason, placental GnRH has been implicated as one […]

Quantitative Gonadotropin-Releasing Hormone Gene Expression and Immunohistochemical Localization in Human Endometrium(2)

GnRH when administered in a pulsatile fashion binds to the pituitary receptors and activates the gonadotrophs to both synthesize and release LH and FSH. Paradoxically, long-term administration of GnRH-a has an inhibitory effect on the pituitary gonadotropic secretion, causing a reversible medical gonadectomy. GnRH-a has been successfully and routinely used for pituitary desensitization before ovarian […]

Quantitative Gonadotropin-Releasing Hormone Gene Expression and Immunohistochemical Localization in Human Endometrium(1)

Almost thirty years have passed since the isolation, determination of structure, and synthesis of GnRH, the hypothalamic hormone controlling the secretion of both FSH and LH from the anterior pituitary. GnRH binds to specific high-affinity pituitary receptors to trigger the release of the gonadotropins; low levels of GnRH are trophic to the receptor and stimulatory […]

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