Abstract:
RESEARCH QUESTION:When and how does the gradual transition of the endocrine control of early pregnancy from the corpus luteum to the placenta, termed luteoplacental shift, take place? DESIGN:Prospective analysis of serum progesterone levels in pregnancies (n = 88) resulting from programmed frozen-thawed embryo transfer cycles in which ovulation was suppressed and no corpus luteum was present. Dydrogesterone, which does not cross-react with progesterone in immunoassay or spectrometric assay, was used for luteal phase and early pregnancy support. Progesterone, oestradiol and hCG were measured at regular intervals from before pregnancy achievement until +65 to 71 days after embryo transfer by Roche Elecsys electrochemiluminescence immunoassay (Elecsys ECLIA) and liquid chromatography-tandem mass spectrometry (LC-MS/MS). RESULTS:Serum progesterone remained at baseline levels on first blood analysis +9 to 15 days after embryo transfer and increased only marginally independently from the type of pregnancy up to +16 to 22 days after embryo transfer. From +23 to 29 days after embryo transfer, progesterone increased non-linearly above 1.0 ng/ml and increased further throughout the first trimester with elevated levels in multiples. Oestradiol levels increased in parallel with progesterone; hCG plateaued around +37 to 43 days. Progesterone levels were significant predictors for pregnancy viability from +23 to 29 days after embryo transfer onwards with best accuracy +37 to 43 days after embryo transfer (receiver operator characteristic analysis area under the curve 0.98; 95% CI 0.94 to 1; P = 0.0009). CONCLUSIONS:The onset of substantial progesterone production is the 7th gestational week. Progesterone increase is non-linear, depends on chorionicity and zygosity, and may have predictive potential on the outcome of pregnancies originating from frozen embryo transfer cycles.
journal_name
Reprod Biomed Onlinejournal_title
Reproductive biomedicine onlineauthors
Neumann K,Depenbusch M,Schultze-Mosgau A,Griesinger Gdoi
10.1016/j.rbmo.2020.01.019subject
Has Abstractpub_date
2020-05-01 00:00:00pages
743-751issue
5eissn
1472-6483issn
1472-6491pii
S1472-6483(20)30072-9journal_volume
40pub_type
杂志文章abstract::Quantitative fluorescent PCR (QF-PCR) has been shown to be an accurate assay for the rapid prenatal diagnosis of chromosome disorders. The extra-embryonic coelom develops during week 4 of gestation and it can be aspirated from the following week, making coelocentesis the earliest possible method of prenatal diagnosis ...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章
doi:10.1016/s1472-6483(10)62173-6
更新日期:2003-06-01 00:00:00
abstract:RESEARCH QUESTION:A close association between Kisspeptin-1 (KISS-1) and reproductive physiology has been reported, but the results on circulatory KISS-1 are ambiguous in patients with polycystic ovary syndrome (PCOS). A systematic review and meta-analysis were conducted to evaluate the association between KISS-1 and PC...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章,meta分析
doi:10.1016/j.rbmo.2019.04.018
更新日期:2019-10-01 00:00:00
abstract::Tubulin is a protein constituent of cytoskeletal microtubules, closely related to sperm motility. However, the changes in tubulin distribution following capacitation and acrosome reaction are poorly understood. This study immunolocalized and quantified the expression of α-tubulin in fresh, capacitated and acrosome-rea...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章
doi:10.1016/j.rbmo.2013.10.001
更新日期:2014-02-01 00:00:00
abstract::This study aims to compare a psychological evaluation test to classical psychoanalysis in infertile women. Two hundred women were submitted to the Psychological Evaluation Test (PET). The sum of the scores for the responses ranged from 15 to 60 points, with scores >/=30 points being defined as 'psycho-emotional maladj...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章
doi:10.1016/s1472-6483(10)60492-0
更新日期:2004-01-01 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::From an economist's perspective, cross-border reproductive care (CBRC) reflects a global market economy bringing together the needs of patients and skills of doctors at an agreed price. From this perspective CBRC is neither wrong nor right, rather it reflects rational economic behaviour of couples to maximize their we...
journal_title:Reproductive biomedicine online
pub_type: 评论,杂志文章
doi:10.1016/j.rbmo.2011.09.006
更新日期:2011-12-01 00:00:00
abstract:RESEARCH QUESTION:Does regular smoking affect semen quality and the levels of DNA methylation in mature human spermatozoa? DESIGN:Spermatozoa from 109 men were evaluated (55 smokers and 54 non-smokers). DNA was extracted from purified spermatozoa, and DNA methylation was quantified by enzyme-linked immunosorbent assay...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章
doi:10.1016/j.rbmo.2018.08.016
更新日期:2018-11-01 00:00:00
abstract::In this prospective randomized study, women with idiopathic karyotypically normal premature ovarian failure (POF) were treated with gonadotrophin-releasing hormone (GnRH) agonist and gonadotrophins with and without the addition of corticosteroids in an attempt to restore ovarian function. The study comprised 58 women ...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章,随机对照试验
doi:10.1016/s1472-6483(10)60711-0
更新日期:2007-08-01 00:00:00
abstract::The clinical implications of congenital uterine anomalies (CUA), and the benefits of hysteroscopic resection of a uterine septum, were evaluated. Studies comparing reproductive and obstetric outcome of patients with and without CUA and of patients who had and had not undergone hysteroscopic resection of a uterine sept...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.rbmo.2014.09.006
更新日期:2014-12-01 00:00:00
abstract::Anti-Müllerian hormone (AMH) has emerged as an important marker of ovarian reserve. Its variation throughout the cycle, however, may still be a matter of debate. The objective of this study was to re-evaluate the intra-cycle fluctuations of AMH in individuals in a prospective clinical study with focus on the age-relat...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章
doi:10.1016/j.rbmo.2012.02.023
更新日期:2012-06-01 00:00:00
abstract::This study tested in-vitro maturation (IVM) as a complementary strategy to improve the mature oocyte yield of breast cancer patients undergoing ovarian stimulation for fertility preservation. Secondary analysis of prospectively collected data is performed for 32 breast cancer patients undergoing oocyte or embryo cryop...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章
doi:10.1016/j.rbmo.2010.01.012
更新日期:2010-05-01 00:00:00
abstract::Traditional dogma suggests that intracytoplasmic sperm injection (ICSI) should be performed to ensure successful oocyte fertilization in an in-vitro maturation (IVM) cycle. This study postulated that there would be no difference in the fertilization rate when ICSI was compared with IVF. This hypothesis was tested in a...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.rbmo.2012.08.001
更新日期:2012-12-01 00:00:00
abstract::In male infertility, complementary treatment with antioxidant-containing food supplements quadruples the spontaneous pregnancy rate and reduces the cost per pregnancy by 60%. ...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章
doi:10.1016/j.rbmo.2011.05.009
更新日期:2011-09-01 00:00:00
abstract::In this retrospective study, the utility of preimplantation genetic screening (PGS) in patients with advanced maternal age is evaluated. The patient population consisted of women aged 38-44years and included in a regular IVF programme with or without PGS analysis. Transfer rate, ongoing implantation rate and ongoing p...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章
doi:10.1016/j.rbmo.2010.06.020
更新日期:2010-11-01 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::Although numerous methods have been promoted as having an influence on the gender of offspring, most lack credible scientific evidence of effectiveness. Preconception gender selection has an important application in reducing the risk of having children with X-linked disease. A preconception, flow cytometric sperm sort...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章
doi:10.1016/s1472-6483(10)62217-1
更新日期:2005-03-01 00:00:00
abstract::The aim of this retrospective study was to determine whether pituitary down-regulation after gonadotrophin-releasing hormone analogue (GnRHa) administration can be accurately predicted by transvaginal ultrasonographic measurement of endometrial thickness in the presence of menstruation. All cycles of an IVF/intracytop...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章
doi:10.1016/s1472-6483(10)61109-1
更新日期:2004-05-01 00:00:00
abstract::Understanding the biology of reproductive organs is essential for the development of assisted reproductive techniques. There is at present no direct evidence for either the concentration and dynamics of intrauterine oxygen tension at the endometrial surface, nor its importance for the receptiveness of the endometrium....
journal_title:Reproductive biomedicine online
pub_type: 杂志文章
doi:10.1016/s1472-6483(10)61443-5
更新日期:2006-09-01 00:00:00
abstract::This study evaluated the cost-effectiveness of treatments for women with polycystic ovary syndrome (PCOS) who ovulate on clomiphene citrate but do not conceive after six cycles. A decision-analytic framework was developed for six scenarios: (1) three cycles of IVF; (2) continuation of clomiphene citrate for six cycles...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章
doi:10.1016/j.rbmo.2014.01.014
更新日期:2014-05-01 00:00:00
abstract::This retrospective cohort study of 2051 consecutive fresh non-donor intracytoplasmic sperm injection (ICSI) cycles investigated whether time from oocyte retrieval to denudation, precisely measured and recorded by an operator-independent automated radiofrequency-based system, affected cycle outcome. ICSI cycles were di...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章
doi:10.1016/j.rbmo.2018.03.014
更新日期:2018-07-01 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:RESEARCH QUESTION:To assess whether the incidence of placental disorders of pregnancy decreases with increasing parity in repeat IVF pregnancies, in the same way as natural pregnancies. DESIGN:This was a retrospective cohort of deliveries between November 2008 and January 2020, in a single university-affiliated medica...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章
doi:10.1016/j.rbmo.2020.11.018
更新日期:2020-11-29 00:00:00
abstract::IVF productivity rate is an index defined as the sum of all live births from either fresh or frozen embryo transfers arising from a single oocyte collection. This retrospective analysis over 9 continuous years used this index to understand the potential impact on pregnancy rates of milder stimulation regimens with ass...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章
doi:10.1016/j.rbmo.2013.05.015
更新日期:2013-09-01 00:00:00
abstract::The M2 haplotype of the annexin A5 gene is a well-recognized predisposition factor for recurrent spontaneous abortion (RSA). A recent publication by Nagirnaja et al. (2015) in PLoS One discusses the risk role of the M2 haplotype for RSA in cases compared with controls of North European extraction and arrives at a nega...
journal_title:Reproductive biomedicine online
pub_type: 评论,杂志文章
doi:10.1016/j.rbmo.2016.02.004
更新日期:2016-05-01 00:00:00
abstract::This study investigates whether the timing of in-vivo and in-vitro maturation influences ooplasmic dysmaturity. This is a retrospective comparison of intracytoplasmic sperm injection (ICSI) cycles (index cycles) complicated by complete fertilization failure (CFF) to cycles with successful fertilization in the same pat...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章
doi:10.1016/j.rbmo.2016.01.007
更新日期:2016-04-01 00:00:00
abstract::The objective of this review is to analyse and integrate into a semi-historical background the alternative treatments available for the alleviation of infertility. Data are presented on their causes and success, using compilations of data reported in the literature along with personal experience. Results are expressed...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章,评审
doi:10.1016/s1472-6483(10)61601-x
更新日期:2002-07-01 00:00:00
abstract::The predictive value of pre-ovulatory hormones for achievement of pregnancy has been extensively evaluated in assisted reproductive technologies. Currently, no high-quality evidence exists to support or deny an association between oestradiol levels on the day of human chorionic gonadotrophin (HCG) administration and p...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章,评审
doi:10.1016/s1472-6483(10)60447-6
更新日期:2009-01-01 00:00:00
abstract::Single-embryo image assessment involves a high degree of inaccuracy because of the imprecise labelling of the transferred embryo images. In this study, we considered the entire transfer cycle to predict the implantation potential of embryos, and propose a novel algorithm based on a combination of local binary pattern ...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章
doi:10.1016/j.rbmo.2017.02.002
更新日期:2017-05-01 00:00:00
abstract::Meiotic spindles tether the chromosomes of oocytes and have been found to be structurally abnormal in older women. Conventional methods to image the meiotic spindle, such as immunostaining or transmission electron microscopy, require prior fixation, so they cannot be used clinically, and their utility in developmental...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章,评审
doi:10.1016/s1472-6483(10)61724-5
更新日期:2003-07-01 00:00:00
abstract::Over the past decade, the number of reported live births resulting from oocyte cryopreservation has rapidly increased. To appreciate the true number of children born, verified live births were tabulated and assessed. A literature search was performed; authors were then contacted to verify birth outcomes and provide up...
journal_title:Reproductive biomedicine online
pub_type: 杂志文章
doi:10.1016/s1472-6483(10)60025-9
更新日期:2009-06-01 00:00:00