Abstract：
:High daily doses of gonadotrophin-releasing hormone (GnRH) antagonists during the follicular phase of ovarian stimulation were associated with low implantation rates. To test if this occurred because of profound pituitary suppression, the pituitary response was suppressed with a high-dose GnRH antagonist and recombinant LH (rLH) was added back to correct the implantation rate. An open-label, randomized, controlled, prospective clinical study in 60 patients undergoing IVF was performed. GnRH antagonist was initiated on day 6 of stimulation (2 mg/day) together with 375 IU rLH, and maintained until the day of HCG administration. Controls received 0.25 mg/day GnRH antagonist. Fluctuating LH concentrations were present on days 3 and 6 in both groups. This strong fluctuation continued on day 8 and on the day of HCG administration in the control (low-dose) group, where 30% of patients had LH concentrations <1 IU/1 on the HCG day. The study (high-dose) group showed stable LH concentrations on day 8 and on the HCG day, with no LH surges. No clinical differences were found between groups. The LH add-back strategy (375 IU/day) rescued the adverse effects that high doses of GnRH imposed on implantation. These results suggest that rLH should be considered during ovarian stimulation with GnRH antagonist.
journal_name
Reprod Biomed Onlinejournal_title
Reproductive biomedicine onlineauthors
Garcia-Velasco JA,Bennink HJ,Epifanio R,Escudero E,Pellicer A,Simón Cdoi
10.1016/S1472-6483(11)60009-6subject
Has Abstractpub_date
2011-02-01 00:00:00pages
S52-9eissn
1472-6483issn
1472-6491pii
S1472-6483(11)60009-6journal_volume
22 Suppl 1pub_type
杂志文章abstract：:Developmental toxicity caused by exposure to a mixture of environmental pollutants has become a major health concern. Human-made chemicals, including xenoestrogens, pesticides and heavy metals, as well as unhealthy lifestyle behaviours, mainly tobacco smoking, alcohol consumption and medical drug abuse, are major fact...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章,评审
doi：10.1016/j.rbmo.2014.03.002
更新日期：2014-07-01 00:00:00
abstract：:This paper examines the regulatory framework currently governing the creation of animal-human hybrids and chimera embryos in stem cell research, and some of the ethical implications of such research. It discusses the findings of a recent government select committee that considered the topic. It considers the debate ar...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/s1472-6483(10)60187-3
更新日期：2008-01-01 00:00:00
abstract：:During the early follicular phase in the menstrual cycle, antral follicle sizes are often markedly heterogeneous. These follicular size discrepancies may, at least in part, result from the early exposure of FSH-sensitive follicles to gradient FSH concentrations during the preceding luteal phase. In addition, they pote...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章,评审
doi：10.1016/s1472-6483(10)61115-7
更新日期：2005-06-01 00:00:00
abstract：:The introduction to this review discusses briefly why immunology, perceived as difficult by assisted reproduction technology clinicians, need nevertheless be envisaged as a central actor in the reproduction process, and how the maternal immune system, initially perceived as a threat to the fetoplacental unit, is in fa...
journal_title：Reproductive biomedicine online
pub_type：
doi：10.1016/s1472-6483(10)60572-x
更新日期：2008-02-01 00:00:00
abstract：RESEARCH QUESTION:What are the optimal values of maternal age and body mass index (BMI), paternal age and BMI, number of oocytes retrieved, and serum AMH concentrations for cumulative live birth rate (CLBR) in IVF and embryo transfer (IVF-ET)? DESIGN:This retrospective cohort study included 9494 women who underwent th...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2020.01.024
更新日期：2020-05-01 00:00:00
abstract：:Laparotomic myomectomy is often the only realistic solution for symptomatic women with multiple or large myomas who wish to retain their fertility. The aim of this study was to document the rate of uterine synechiae and their associated risk factors after laparotomic myomectomy. This prospective observational study to...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2018.01.010
更新日期：2018-04-01 00:00:00
abstract：:Premature LH and progesterone surges are associated with different factors and hormonal modulators. The aim of the present study was (i) to investigate the clinical and laboratory factors and (ii) to highlight the importance of different stimulation protocols in associated premature LH and progesterone surges in intra...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/s1472-6483(10)61751-8
更新日期：2003-09-01 00:00:00
abstract：:A great deal is now known about the migration of spermatozoa within the female reproductive tract, and how they interact with the oocyte and achieve fertilization in a variety of species. The process involves a series of complex features. It is a mixture of active and passive transport and active migration, with drast...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章,评审
doi：10.1016/s1472-6483(10)61935-9
更新日期：2002-03-01 00:00:00
abstract：RESEARCH QUESTION:Does the quality of transferred embryos have an impact on the rate of congenital malformations in IVF/intracytoplasmic sperm injection (ICSI)-conceived babies? DESIGN:Retrospective cohort study involving 6637 pregnancies of ≥20 weeks' gestation from women undergoing embryo transfer with a single Day ...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2019.07.035
更新日期：2019-12-01 00:00:00
abstract：RESEARCH QUESTION:Does artificial oocyte activation improve clinical outcomes for patients at risk of intracytoplasmic sperm injection (ICSI) fertilization failure? DESIGN:In this study, sibling oocytes from patients with previous ICSI failure or severe teratozoospermia were divided equally into two groups, half for a...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2019.03.216
更新日期：2019-08-01 00:00:00
abstract：:Glutathione S-transferases are a family of multifunctional proteins involved in intracellular transport processes and drug detoxication. In rats, these enzymes are dimeric proteins, and exist as cytosolic and microsomal proteins. The affinity purified rat testicular glutathione S-transferases are comprised of four sub...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/s1472-6483(10)60499-3
更新日期：2004-01-01 00:00:00
abstract：:The use of donor sperm is increasing, yet limited information is available about the health and development of children conceived from donor sperm. This retrospective descriptive study aimed to assess health and development in a cohort of school-aged children who were conceived using donor sperm. Participants included...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2017.06.012
更新日期：2017-10-01 00:00:00
abstract：:Many high-grade embryos selected for transfer according to their morphological evaluation were detected to have chromosomal abnormalities after aneuploidy screening for infertility by preimplantation genetic diagnosis (PGD). The aim of this study was to detect if there is any correlation between embryo quality and gen...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/s1472-6483(10)60984-4
更新日期：2006-01-01 00:00:00
abstract：:The dramatic increase in the incidence of high order multiple pregnancies that has occurred since the mid-1970s is due to three main factors: increasing female age at conception; increasing use of ovulation induction agents and the introduction of sophisticated assisted reproduction techniques. High order multiple pre...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/s1472-6483(10)61854-8
更新日期：2003-04-01 00:00:00
abstract：:To investigate the development of follicles and incidence of apoptosis in vitrified cultured mouse ovaries in the presence and absence of Kit ligand, 1-week-old mouse ovaries were cultured in the presence or absence of Kit ligand for 7 days. Development and function of ovarian follicles was evaluated by histology and ...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2015.01.009
更新日期：2015-05-01 00:00:00
abstract：:The population attempting pregnancy and having babies is ageing. Gynaecological and obstetric complications worsen with age. Maternity services are struggling. Increasing rates of infertility and complications are not matched by the marvels in the laboratory. This paper argues that assisted reproduction treatment has ...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章,评审
doi：10.1016/j.rbmo.2013.09.012
更新日期：2013-12-01 00:00:00
abstract：:The 20th century witnessed the steady development of knowledge about reproductive physiology and endocrinology in animals and humans. These advances led to the identification of higher centres governing the ovary and its follicles. Effects of X-rays on the head and other agents, or excision of the pituitary gland, led...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章,评审
doi：10.1016/s1472-6483(12)60006-6
更新日期：2002-01-01 00:00:00
abstract：:The effect of increasing donor body mass index (BMI) on clinical pregnancies was retrospectively analysed in a cohort of consecutive 2722 donor oocyte IVF cycles. The relationship between donor BMI and clinical pregnancies was assessed after adjusting for recipient BMI. Clinical pregnancy rates and live birth rates (L...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2017.07.019
更新日期：2017-12-01 00:00:00
abstract：:For the gamete and embryo donation community, it is well recognized that the implementation of a gamete and embryo donor registry (GEDR) represents a good initiative to ensure the best possible health conditions for donor-conceived individuals. Be they national, institutional or independent, GEDR can play a major role...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2013.10.020
更新日期：2014-03-01 00:00:00
abstract：:Time-lapse imaging of the human preimplantation embryo in vitro has revealed a transient phenomenon involving the appearance of perivitelline threads, commonly observed at the two-cell stage. These threads span the perivitelline space, arising at the specific area where the cytoplasmic membrane contacts the zona pellu...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2017.09.004
更新日期：2017-12-01 00:00:00
abstract：:The embryologist presides over the fulfillment of a patient's treatment in the laboratory for IVF through use of assisted reproduction techniques, and is in a unique position to impart quality to the process. Although the technical skill of the embryologist is critical, the embryologist's contribution to quality is eq...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章,评审
doi：10.1016/j.rbmo.2015.07.006
更新日期：2015-10-01 00:00:00
abstract：RESEARCH QUESTION:Previous studies of aromatase inhibitors on male infertility have focused on men with low testosterone-oestradiol ratio of less than 10. Can aromatase inhibitors improve spermatogenesis in men with idiopathic male infertility with normal testosterone-oestradiol ratio? DESIGN:Prospective study of men ...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2018.09.016
更新日期：2019-01-01 00:00:00
abstract：:Comparative profiling was performed on proteins synthesized in human cumulus cells (CC) from individual oocytes recovered after two different ovarian stimulation protocols for classical IVF (cIVF). Using high-resolution two-dimensional protein electrophoresis after metabolic labelling with [35S]-methionine, protein ex...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/s1472-6483(10)61028-0
更新日期：2006-12-01 00:00:00
abstract：:Aromatase inhibitors can be utilized to minimize oestrogen exposure in breast cancer patients undergoing gonadotrophin stimulation. This retrospective-prospective study determined whether using a gonadotrophin-releasing hormone agonist (GnRHa) trigger instead of human chorionic gonadotrophin (HCG) would reduce oestrog...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2010.03.004
更新日期：2010-06-01 00:00:00
abstract：:Myomectomy is one of the commonest gynaecological operations. Laparoscopic myomectomy has emerged over the last two decades as a possible alternative to the traditional laparotomy. Most studies have revealed that the laparoscopic procedure is at least as safe as the open procedure as to the rate of complications and m...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2010.09.011
更新日期：2011-07-01 00:00:00
abstract：:The expression of fibroblast growth factor 10 (FGF-10) has not been studied in human ovarian cortical follicles. The aim of the present study was to investigate the expression of FGF-10 in preantral follicles from fetuses, girls and women. Ovarian samples were obtained from 14 human fetuses at 21-33 gestational weeks ...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2012.07.002
更新日期：2012-10-01 00:00:00
abstract：:The European Union's Tissues and Cells Directive (2004) establishes an extensive framework of standards for all tissue banks throughout the EU. This article considers how the requirements of the Directive might be expected to achieve the stated goals of promoting the safety of assisted conception treatments and/or fac...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/s1472-6483(10)60954-6
更新日期：2005-08-01 00:00:00
abstract：:The use of a gonadotrophin-releasing hormone (GnRH) agonist to trigger final oocyte maturation in a GnRH antagonist protocol has been associated with poorer clinical outcomes due to an increased luteal-phase defect. It has been shown that LH activity is crucial in a normal luteal phase. Studies assessing the LH concen...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2013.10.019
更新日期：2014-03-01 00:00:00
abstract：:Granulosa cells (GCs) play a major role in folliculogenesis and are crucial for oocyte maturation and growth. In these cells, the mTOR/AKT signalling pathway regulates early folliculogenesis by maintaining the dormancy of primordial follicles, while FSH induces their further differentiation and maturation. Because cha...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2017.07.016
更新日期：2017-11-01 00:00:00
abstract：:Post-operative adhesions are a significant complication of all abdominal surgical procedures. The major strategies for adhesion prevention in gynaecological surgery are focused on the optimization of surgical technique and use of anti-adhesive agents, which fall into two main categories: pharmacological agents and bar...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章,评审
doi：10.1016/j.rbmo.2010.04.021
更新日期：2010-09-01 00:00:00
