BACKGROUND The purpose of the study was to evaluate the role of Progesterone/ Estradiol (P4/E2) ratio as a predictive tool for clinical pregnancy in ART cycles with a premature progesterone rise of >1.5 ng/ml on the day of human chorionic gonadotropin (hCG) trigger. METHODS Retrospective analysis was done on 569 fresh embryo transfer cycles from January 2011 to December 2012 at the infertilit...

Progesterone is a critical steroid hormone that controls cell proliferation and differentiation in the female reproductive tract. Progesterone acts through two nuclear receptor isoforms, progesterone receptors A and B (PRA and PRB, respectively), each with unique cellular effects. Loss of PRB has recently been linked to the development of poorly differentiated endometrial tumors, a lethal form ...

UNLABELLED Mifepristone is a progesterone receptor antagonist widely used in obstetrics. The aim of the study was to focus on free corticotrophin-releasing hormone (CRH) and also describe modulation of adrenal and placental steroid hormone concentrations induced by mifepristone. METHODS Twenty-six women were enrolled in the study. They received mifepristone for termination of pregnancy. Mater...

Background: To study the histomorphological effects of Mifepristone treatment on rat uterus. Methods: In this experimental study, sixty adult female rats were divided randomly into two groups, comprising of 30 animals in each group. In group A one ml of normal saline was given orally daily for three months while in group B mifepristone was given orally in a dose of 1 mg/kg body weight daily for...

Estrogen and progesterone play an important role in the development and implantation of preimplantation embryos. However, it is controversial whether these hormones act directly on the embryos. The effects of these hormones depend on the existence of their specific receptors. To determine whether estrogen receptor (ER) and progesterone receptor genes are expressed in mouse preimplantation embry...

Blood and urine specimens from 27 premenopausal breast cancer patients and 62 healthy controls have been compared with respect to concentration of testosterone and progesterone in blood and of testosterone and androstanediol in urine, measured in the luteal phase of the menstrual cycle. There was a strong positive association between the concentration of the two androgens, either in blood or ur...

Objective: To see how dose of Silymarin aqueous extracts affected prolactin hormone gene expression in pituitary glands and Androgen serum samples female experimental rats throughout nursing. Methods: 24 adult healthy, Two sets pregnant were created (12 each group) treated as follows for ten days postnatal. G 1 intubated orally distal water serving control while, 2 (200 mg\kg\day). Results: The...

Final oocyte maturation using GnRH-agonist trigger in a GnRH-antagonist protocol is increasingly common, as ovarian hyperstimulation syndrome is almost completely avoided. However, this approach might lead to reduced pregnancy rates due to severe luteolysis. This proof of concept study evaluated the extend of luteolysis by measuring progesterone levels 48 hours after oocyte retrieval in 51 pati...

Preovulatory release of progesterone has been well established in various species of mammals. In the rat, a remarkable increase in ovarian progesterone secretion at proestrus was first demonstrated by Eto et al.(1962)and confirmed by other workers (Hashimoto et al., 1968) including ourselves (Uchida et al., 1969). The determination of ovarian progestin secretion and plasma LH level on the same ...

The effect of 6-week treatment with Ukrain at doses of 0.3, 1.5, and 3.0 mg/kg i.v. on the serum levels of steroid hormones, i.e., estradiol, testosterone, and progesterone, was studied in rabbits of both sexes. It is demonstrated that Ukrain treatment exerts minor changes in serum hormone levels. The level of estradiol was increased in the serum of male rabbits following Ukrain treatment only ...