نتایج جستجو برای: a gnrh antagonist
تعداد نتایج: 13443058 فیلتر نتایج به سال:
To review treatment options for poor-responding patients who are undergoing infertility treatment. Review article and case studies.A comprehensive determination of potential ovarian response for the poor-responding patient is important in the individualization of treatment options for these patients. Treatment options include both the microdose flare leuprolide acetate and GnRH antagonist stimu...
BACKGROUND Adjuvant/neoadjuvant chemotherapy in breast cancer patients may be associated with amenorrhea and a marked reduction in ovarian reserve. OBJECTIVES To assess the use of letrozole with follicle-stimulating hormone (FSH) in gonadotropin-releasing hormone (GnRH) analogue protocols, based on reported attempts to avoid the estradiol (E2) increase during controlled ovarian hyperstimulati...
BACKGROUND Gonadotropin-releasing hormone (GnRH) plays essential roles in embryo implantation, invasion of trophoblastic tissue, and steroid synthesis in the placenta. OBJECTIVE The aim of this study was to evaluate the effect of GnRH antagonist administration on pregnancy outcomes in early implantation period. MATERIALS AND METHODS In this retrospective study, 94 infertile women undergoing...
Pulsatile secretion of GnRH-1 regulates gonadotropin release from anterior pituitary and thus is essential for reproduction. The present study focused on the role of cholecystokinin (CCK) in the GnRH-1 system. CCK is a neuropeptide abundantly expressed in the brain, which is implicated in activation of female reproductive behaviors and release of anterior pituitary hormones. Using dual-label im...
BACKGROUND The specific role of LH in folliculogenesis and oocyte maturation is unclear. GnRH antagonists, when administered in the late follicular phase, induce a sharp decrease in serum LH which may be detrimental for IVF outcome. This study was performed to evaluate whether the replacement of GnRH agonist (triptorelin) by a GnRH antagonist (ganirelix; NV Organon) in oocyte donation cycles ha...
BACKGROUND GnRH agonist administration in the luteal phase has been suggested to beneficially affect the outcome of intracytoplasmic sperm injection (ICSI) and embryo transfer (ET) cycles. This blind randomized controlled study evaluates the effect of GnRH (Gonadotropine Releasing Hormone) agonist administration on ICSI outcome in GnRH antagonist ovarian stimulation protocol in women with 2 or ...
Final oocyte maturation in GnRH antagonist co-treated IVF/ICSI cycles can be triggered with HCG or a GnRH agonist. We conducted a systematic review and meta-analysis of randomized controlled trials to evaluate the efficacy and safety of the final oocyte maturation trigger in GnRH antagonist co-treated cycles. Outcome measures were ongoing pregnancy rate (OPR) and ovarian hyperstimulation syndro...
Background: Male factors, mainly spermatogenesis disorder, are responsible for 20-30% of infertility occurs in different societies. One of the known causes of spermatogenesis disorder is chemotherapy in patients with cancer. The side effect of chemotherapic agents may last from 10 years up to the end of the life. Since dividing cells are mainly affected by anticancer drugs, the aim of the prese...
Background: Ovarian hyperstimulation syndrome is the most serious complication of ovarian stimulation. This novel study aimed to describe an outpatient treatment protocol for ovarian hyperstimulation syndrome (OHSS) that results in rapid normalization of symptoms with minimal side effects. Materials and Methods: A prospective study was undertaken at Infertility department of Shariati Hospital a...
This article is a systematic review of the literature on utilization of gonadotrophin-releasing hormone antagonists (GnRH-ant) for ovarian stimulation for IVF in special patient groups. Summarized by meta-analysis are the data from randomized controlled trials (RCT) in which GnRH-agonist (GnRH-a) and GnRH-ant were compared (eight RCT for poor response, four RCT for PCOS). Also reviewed are the ...
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