Abstract：
PURPOSE:The aim of this analysis was to study whether monozygotic twinning (MZT) events occur in clusters after IVF and, if so, to explore possible explanations for this clustering. METHODS:This is a retrospective cohort study carried out in a single, large university-affiliated reproductive medicine practice. Medical records of all patients who had undergone fresh IVF cycles, resulting in a viable clinical pregnancy, from Jan 2002 to Dec 2013 were reviewed. The incidence of MZT in 6-month intervals and the association with independent risk factors such as maternal age, extended embryo culture, PGD/intracytoplasmic sperm injection (ICSI)/assisted hatching performed were analyzed. RESULTS:Over the 12-year study period, 25,502 fresh IVF cycles were performed, resulting in 8598 clinical pregnancies. Ninety-five cycles (1.1 %) resulted in MZ twins. The percentage of MZT was >2 standard deviations (SD) higher than the overall percentage of MZT in 4 of the 24 6-month intervals. PGD, extended embryo culture (≥4 days), and more recent cycles (2005 or later) were independent risk factors for MZT. The use of multivariable logistic regression modeling to control for risk factors for MZT did not correct for this clustering effect, with both high-risk interval (clustering) and extended embryo culture remaining significant. CONCLUSION:This study supports our hypothesis that MZT occurs in clusters and that this clustering effect could not be explained by demographics and cycle characteristics alone. Although we are unable to explain the clustering phenomenon, this study is important as it highlights high-risk intervals for MZT and opens the door to performing a more detailed investigation, to identify the mechanisms responsible for the spikes of MZT incidence.
journal_name
J Assist Reprod Genetjournal_title
Journal of assisted reproduction and geneticsauthors
Vaughan DA,Ruthazer R,Penzias AS,Norwitz ER,Sakkas Ddoi
10.1007/s10815-015-0616-xsubject
Has Abstractpub_date
2016-01-01 00:00:00pages
19-26issue
1eissn
1058-0468issn
1573-7330pii
10.1007/s10815-015-0616-xjournal_volume
33pub_type
杂志文章abstract：PURPOSE:The aim of the present study was to determine whether supplementation of resveratrol, a stilbenoid antioxidant with therapeutic significance, influences goat (Capra hircus) oocyte maturation and subsequent embryonic development and expression of apoptosis and early embryonic development-related genes. METHODS:...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-013-0116-9
更新日期：2014-02-01 00:00:00
abstract：PURPOSE:To determine whether between-trial heterogeneity in relative risk of fertilisation for intracytoplasmic sperm injection (ICSI) compared to in vitro fertilisation (IVF) can be explained by learning or by between-trial variation in patient characteristics. METHODS:Systematic review and meta-analysis of trials co...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章,meta分析
doi：10.1007/s10815-005-9004-2
更新日期：2006-01-01 00:00:00
abstract：PURPOSE:To explore the effects of controlled ovarian stimulation (COS) on the expression of growth differentiation factor 9 (GDF9) and bone morphogenetic protein 15 (BMP15) in oocytes and granulosa cells from patients with or without polycystic ovary syndrome (PCOS). METHODS:This case-control study was conducted in th...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-013-0041-y
更新日期：2013-10-01 00:00:00
abstract：PURPOSE:Male infertility is a multifactorial disorder with impressively genetic basis; besides, sperm abnormalities are the cause of numerous cases of male infertility. In this study, we evaluated the genetic variants in exons 4 and 5 and their intron-exon boundaries in RABL2B gene in infertile men with oligoasthenoter...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-016-0863-5
更新日期：2017-04-01 00:00:00
abstract：PURPOSE:To determine the pattern of expression of parathyroid hormone-related protein (PTHrP) and its receptor, parathyroid hormone receptor 1 (PTHR1), in mouse embryos in different stages of preimplantation development. METHODS:Embryos were cultured from the pronuclear zygote stage and harvested as 2-cell, 4-cell and...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-013-0094-y
更新日期：2013-08-01 00:00:00
abstract：PURPOSE:To elicit patient preferences for social media utilization and content in the infertility clinic. METHODS:This was a cross-sectional survey study conducted in three US fertility practices. Women presenting to the infertility clinic for an initial or return visit were offered an anonymous voluntary social media...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-018-1189-2
更新日期：2018-07-01 00:00:00
abstract：PURPOSE:We investigated if automated TLI selection may be a valuable strategy to identify those euploid embryos with the best chances of success. METHODS:This is a unicentric and retrospective study involving 244 patients undergoing preimplantational genetic screening (PGS) cycles with autologous oocytes or oocyte don...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-018-1265-7
更新日期：2018-09-01 00:00:00
abstract：PURPOSE:Our purpose was to determine whether immature oocytes could be retrieved under local anesthesia, whether these oocytes would mature and fertilize in vitro, and whether adequate endometrium development could be obtained after hormonal supplementation. METHODS:Ovum pick-up was performed under local anesthesia. I...
journal_title：Journal of assisted reproduction and genetics
pub_type： 临床试验,杂志文章
doi：10.1023/a:1022516806423
更新日期：1999-02-01 00:00:00
abstract：PURPOSE:Dyslipidemia, cardiovascular disease and hypertension are more frequently seen in patients with PCOS than in normal patients. We aimed at evaluating the distribution of Apo E alleles that can influence cardiovascular risk of the PCOS patients and control subjects. METHODS:In this study, 129 young women with PC...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-008-9280-8
更新日期：2009-01-01 00:00:00
abstract：PURPOSE:To evaluate the relative cost-effectiveness of recombinant and urinary follicle-stimulating hormone (FSH) in assisted reproduction techniques in the Spanish National Health Service. METHODS:Markov modelling was used to compare costs and outcomes of three complete treatment cycles using recombinant or urinary F...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1023/a:1024899806149
更新日期：2003-08-01 00:00:00
abstract：OBJECTIVE:Our objective was to obtain parthenogenetic activation of unfertilized human oocytes by puromycin and to try to use this procedure for cytogenetic purposes. SETTING:The setting was our IVF laboratory. METHODS:Eighty-two spare oocytes from 34 IVF patients were used. In the first series of experiments 39 unfe...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/BF01203955
更新日期：1992-08-01 00:00:00
abstract：:We report a case of a couple with a history of six spontaneous miscarriages in which a novel complex chromosomal rearrangement was detected in the male partner who had a totally normal semen analysis. Preimplantation genetic testing of their embryos demonstrated 100% aneuploidy. ...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-018-1126-4
更新日期：2018-05-01 00:00:00
abstract：PURPOSE:To investigate the prognostic significance of apoptosis in granulosa cells recovered from patients participating in IVF-ET. METHODS:Seventy-three women underwent ovarian hyperstimulation for IVF and embryo transfer. After follicle aspiration, recovered granulosa cells were stained by BCL2 monoclonal antibody w...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1023/a:1015319617598
更新日期：2002-05-01 00:00:00
abstract：PURPOSE:This clinical study was designed to identify and compare the pregnancy rates of simultaneous program of natural-cycle IVF and cryopreserved-thawed ET (NICE) with those of natural-cycle IVF and cryopreserved-thawed ET. METHODS:All three groups comprised spontaneously ovulating infertile women under the age of 4...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/BF02066425
更新日期：1996-10-01 00:00:00
abstract：PURPOSE:The purpose of this study was to investigate the effect of male and female serum supplementation on the in vitro development of mouse embryos beyond the blastocyst stage until the outgrowth stage since the latter may be related to the nidation of the embryo. We also studied the effect of EGF addition on embryo ...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/BF02066499
更新日期：1996-11-01 00:00:00
abstract：:Morphologic studies of the endometrium have demonstrated that varying the duration of an artificial follicular phase (AFP) in women with ovarian failure did not adversely affect its developmental capacity. The aim of this study was to evaluate whether such manipulations of endometrial stimulation could influence the p...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/BF01203817
更新日期：1992-06-01 00:00:00
abstract：PURPOSE:To determine the expression of SMAD transcripts in human granulosa cells. METHODS:Luteinized mural granulosa cells were harvested from forty women undergoing oocyte retrieval, and RNAs were isolated. SMAD expression levels were determined by polymerase chain reaction (PCR) and quantitative real-time PCR (q-RTP...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-011-9609-6
更新日期：2011-09-01 00:00:00
abstract：RESEARCH QUESTION:Does a freeze-all strategy improve live birth rates in women of different age groups? DESIGN:Retrospective cohort study of 1882 first embryo transfer cycles, performed between January 2013 and December 2015. Reproductive outcomes between fresh (FRESH) or frozen (FROZEN) embryo transfers were compared...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-020-01934-z
更新日期：2020-10-01 00:00:00
abstract：PURPOSE:Human reproduction is an inefficient process. There is a high rate of loss of early pregnancies, often before the mother (or physician) knows she is pregnant. Genetic abnormalities can explain much of the wastage, but can it explain all of the failures? As embryos bear paternal and embryonic antigens foreign to...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章,评审
doi：10.1023/a:1021788024214
更新日期：2003-02-01 00:00:00
abstract：PURPOSE:The aim of the study was to assess cytogenetic and embryoscopic characteristics in subsequent miscarriages of spontaneous pregnancy losses (SPL) and recurrent pregnancy losses (RPL). METHODS:A retrospective cohort of 75 women was affected by repeated pregnancy loss. Of those, 34 had SPL, 24 primary RPL, and 17...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-018-1226-1
更新日期：2018-08-01 00:00:00
abstract：PURPOSE:The present study by using different growth factors was aimed to develop the best practical culture condition for purification of goat undifferentiated SSCs and their colonization under in vitro and in vivo conditions. METHODS:The enzymatically isolated SSCs obtained from one month old goat testes were culture...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-014-0301-5
更新日期：2014-11-01 00:00:00
abstract：PURPOSE:To assess the effect of assisted hatching (AH) site on the clinical outcomes in vitrified-warmed blastocyst transfer cycles. METHODS:A total of 160 women who underwent vitrified-warmed blastocyst transfer cycles were randomized to either the ICM group (AH performing at the site near the inner cell mess, ICM), ...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章,随机对照试验
doi：10.1007/s10815-013-9984-2
更新日期：2013-06-01 00:00:00
abstract：:Human proteins normally used to supplement human in vitro fertilization-embryo transfer (IVF-ET) culture media were tested for their effects on mouse embryo development from the zygote stage. These proteins included follicular and luteal-phase maternal sera, fetal cord sera, and both human and bovine serum albumin. Ou...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/BF01204114
更新日期：1992-02-01 00:00:00
abstract：PURPOSE:This study was designed to compare levels of satisfaction for ovum donors and gestational carriers/surrogates (GCS), investigate attitudes, and explore beliefs about the role genetics, gestation, and environment play in various characteristics. DESIGN:An east coast IVF center and two California-based agencies ...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1023/a:1020306402235
更新日期：2002-10-01 00:00:00
abstract：PURPOSE:Our purpose was to compare the number and quality of spermatozoa recover following the standard centrifugation method with those after pulsing the relative centrifugal field during centrifugation. METHODS:A prospectively controlled in vitro study using ejaculates from 10 healthy sperm donors was undertaken. Nu...
journal_title：Journal of assisted reproduction and genetics
pub_type： 临床试验,杂志文章
doi：10.1023/a:1020385411769
更新日期：1998-11-01 00:00:00
abstract：:Recent publicized events of cryogenic storage tank failures have created nationwide concern among infertility patients and patients storing embryos and gametes for future use. To assure patient confidence, quality management (QM) plans applied by in vitro fertilization (IVF) laboratories need to include a more compreh...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章,评审
doi：10.1007/s10815-018-1310-6
更新日期：2019-01-01 00:00:00
abstract：:MicroRNAs (miRNAs) are small, about 22 nucleotides, non-coding RNAs which regulate a wide range of gene expression during post-transcriptional stage. They are released into intra- and extracellular microenvironments and play vital roles in different physiological and pathological pathways. Due to easy accessibility, d...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章,评审
doi：10.1007/s10815-020-01860-0
更新日期：2020-08-01 00:00:00
abstract：PURPOSE:To select reference genes with stable messenger RNA (mRNA) expression for quantitative real-time reverse transcription-polymerase chain reaction (qRT-PCR) analysis of vitrified/thawed human ovarian tissue and to evaluate in human ovarian tissue the levels of key proteins which are commonly used as reference pro...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-018-1263-9
更新日期：2018-10-01 00:00:00
abstract：PURPOSE:Polycystic ovary syndrome (PCOS) is a most common endocrine disorder of reproductive age women. Interleukin-6 is involved in the pathophysiological characteristics associated with polycystic ovary syndrome (PCOS). The-174 G/C IL-6 gene promoter region single nucleotide polymorphism (SNP) may influence or modula...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-013-0111-1
更新日期：2013-12-01 00:00:00
abstract：PURPOSE:To ascertain possible cell damage from cryopreservation, the ultrastructure of human oocytes cryopreserved by slow cooling was assessed. MATERIALS AND METHODS:Cryopreservation was performed through two protocols with one-step or two-step propanediol. Fresh control oocytes were examined for comparison. Samples ...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-010-9394-7
更新日期：2010-04-01 00:00:00
