نتایج جستجو برای: oocyte freezing
تعداد نتایج: 32503 فیلتر نتایج به سال:
Background: Process of oocyte freezing, seriously damages the molecular structure of the oocyte into the life and impair its ability to develop. It seems Oocytes can partially recompense those damages. The pentose phosphate pathway (PPP) constitutes the major source of NADPH required for the neutralization of reactive oxygen species (ROS). Glucose-6-phosphate dehydrogenase (G6PDH) is the first ...
UNLABELLED BACKGROUND; Ultrasound-guided transvaginal oocyte retrieval is often performed under local anaesthesia on an outpatient basis. The objective of this study was to compare the overall pain experience of a newly designed reduced needle (RN) compared with a thicker standard needle (SN). METHODS A prospective, randomized, multi-centre study was performed at four different clinics from J...
Introduction: Gonadotropin-releasing hormone (GnRH) agonist triggers are increasingly used in antagonist vitro fertilization (IVF) cycles to prevent ovarian hyperstimulation syndrome (OHSS) following a robust response. The luteolytic effects of GnRH agonists inhibit implantation or spontaneous pregnancy, warranting freezing available blastocysts for future transfer after the risk OHSS subsides....
Multiple pregnancies and ovarian hyper stimulation syndrome (OHSS) are the most serious complications of ovarian stimulation and IVF. Indeed, they are more or less the only ones. OHSS can effectively be prevented in three stages: Before stimulation, during stimulation and at ET. Before stimulation patients should be assessed as to age, the ovarian follicular count and/or anti mullerian hormone ...
INTRODUCTION The aim of this study is to report the current status of ovarian tissue cryopreservation among alternatives for fertility preservation in the Nordic countries. MATERIAL AND METHODS A questionnaire was sent to 14 Nordic academic reproductive centers with established fertility preservation programs. It covered fertility preservation cases performed up to December 2014, standard pro...
Cryopreservation of embryos and gametes has become an indispensible service for infertility treatment. Vitrification is now a prevalent technique for cryopreservation in assisted reproductive technology (ART) replacing, in many cases, conventional slow cooling methodology. Fertility preservation in female patients has become a very topical issue. Various malignant and nonmalignant diseases have...
Background There are several indications of human female gamete cryostorage including sub-fertile and fertile patients. But our focus will be in women at risk of losing their reproductive function caused by oncologycal treatments or premature ovarian failure that could benefit greatly from this practice. Fertile women may take advantage of this technology to electively delay childbearing. The o...
BACKGROUND Oocyte cryopreservation remains a realistic objective, provided that more systematic approaches are applied, such as thorough analysis of the oocyte oolemma permeability to water and diverse cryoprotectants. METHODS We prospectively investigated volume changes over time at different temperatures (30 degrees C, 22 degrees C and 8 degrees C) of human metaphase II (MII) oocytes (obtai...
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