Assessment of the impact of asynchronous syngamy by time-lapse imaging on early human embryo development, implantation and live birth rates

2016 ◽  
Author(s):  
Shabana Sayed
Keyword(s):  
Embryo Development ◽  
Live Birth ◽  
Human Embryo ◽  
Time Lapse ◽  
Birth Rates ◽  
Live Birth Rates ◽  
Human Embryo Development ◽  
Time Lapse Imaging ◽  
The Impact ◽  
Early Human

Time-lapse based investigation of early human embryo development: the impact of age and AMH

2012 ◽  
Vol 94 (1) ◽  
pp. 30-31
Author(s):  
J. Liebenthron ◽  
M. Montag ◽  
M. Köster ◽  
B. Toth ◽  
J. Reinsberg ◽  
...  
Keyword(s):  
Embryo Development ◽  
Human Embryo ◽  
Time Lapse ◽  
Human Embryo Development ◽  
The Impact ◽  
Early Human

scholarly journals Sperm Selection by Magnetic-Activated Cell Sorting Before Microinjection of Autologous Oocytes Increases Cumulative Live Birth Rates with Limited Clinical Impact: A Retrospective Study in Unselected Males

Biology ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 430
Author(s):  
María Gil Juliá ◽  
Irene Hervás ◽  
Ana Navarro-Gómez Lechón ◽  
Fernando Quintana ◽  
David Amorós ◽  
...  
Keyword(s):  
Live Birth ◽  
Clinical Impact ◽  
Sperm Selection ◽  
Reproductive Outcomes ◽  
Birth Rates ◽  
Multicenter Observational Study ◽  
Live Birth Rates ◽  
Cumulative Live Birth ◽  
The Impact ◽  
Autologous Oocytes

The application of MACS non-apoptotic sperm selection in infertility clinics is controversial since the published literature does not agree on its effect on reproductive outcomes. Therefore, it is not part of the routine clinical practice. Classical measures of reproductive success (pregnancy or live birth rates per ovarian stimulation) introduce a bias in the evaluation of a technique’s effect, since only the best embryo is transferred. This retrospective, multicenter, observational study evaluated the impact of MACS on reproductive outcomes, measuring results in classical parameters and cumulative live birth rates (CLBR). Data from ICSI cycles using autologous oocyte in Spanish IVIRMA fertility clinics from January 2008 to February 2020 were divided into two groups according to their semen processing: standard practice (reference: 46,807 patients) versus an added MACS sperm selection (1779 patients). Only when measured as CLBR per embryo transferred and per MII oocyte used was the difference between groups statistically significant. There were no significant differences between MACS and reference groups on pregnancy and live birth rates. In conclusion, results suggest that non-apoptotic sperm selection by MACS on unselected males prior to ICSI with autologous oocytes has limited clinical impact, showing a subtle increase in CLBR per embryo transferred.

scholarly journals Prediction model for aneuploidy in early human embryo development revealed by single-cell analysis

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Maria Vera-Rodriguez ◽  
Shawn L. Chavez ◽  
Carmen Rubio ◽  
Renee A. Reijo Pera ◽  
Carlos Simon
Keyword(s):  
Prediction Model ◽  
Single Cell ◽  
Embryo Development ◽  
Human Embryo ◽  
Single Cell Analysis ◽  
Cell Analysis ◽  
Human Embryo Development ◽  
Early Human

Exploring early human embryo development

Science ◽  
2018 ◽  
Vol 360 (6393) ◽  
pp. 1075-1076 ◽  
Author(s):  
Janet Rossant ◽  
Patrick P. L. Tam
Keyword(s):  
Embryo Development ◽  
Human Embryo ◽  
Human Embryo Development ◽  
Early Human

P–237 The good, the fast and the slow: which is better? Live birth rate following single blastocyst frozen embryo transfer

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
P Sokol ◽  
E Clu. Obradó ◽  
M Sol Inarejos ◽  
M Parrieg. Beltrán ◽  
F Martíne. Sa. Andrés ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Embryo Transfer ◽  
Live Birth ◽  
Embryo Quality ◽  
Frozen Embryo Transfer ◽  
Birth Rates ◽  
Live Birth Rates ◽  
Actual Effect ◽  
Blastocyst Quality ◽  
The Impact

Abstract Study question Are embryo quality and day of vitrification (Day 5, 6 or 7) associated with live birth rates (LBR) following single blastocyst transfer (SBT) in frozen embryo transfer cycle (FET)? Summary answer Both blastocyst quality and day of vitrification are significantly associated with LBRs, with very low LBR when poor quality embryos are frozen on day 6. What is known already Evidence suggests that chromosomal status (ploidy) is strongly associated with blastocyst morphology and good quality embryos are more likely to be euploid. Furthermore, previous studies have shown a relationship between the time that embryos need to reach blastocyst stage and their euploidy rate with slowly developing blastocysts showing higher rate of aneuploidy. Nonetheless, despite all this evidence little is known about the actual effect of the combination of blastocyst quality and day of its vitrification. The scope of this study was to quantify the actual effect of the embryo quality and day of vitrification on live birth rates following FET. Study design, size, duration Retrospective analysis of 1546 FET cycles with SBT conducted between 2017 and 2019 in the university-affiliated private clinic. The embryos used for FET were obtained from IVF/ICSI: with PGT (FET-PGT) or without PGT (FET0) or from donated oocytes (FET-DON). Participants/materials, setting, methods FET with natural, natural-modified and completely medicated cycles to prepare endometrial lining were included. Blastocysts were classified according to Spanish Association for the Study of Reproductive Biology (ASEBIR) classification, ranging from A (the highest) to D (the lowest). The impact on LBR of different subgroups, formed within FET-PGT, FET0, FET-DON groups due to different day of vitrification and blastocyst quality, was assessed, using logistic regression after adjusting for age, day of vitrification and embryo quality. Main results and the role of chance We included 1546 FET cycles. Of those, 543 (35%) corresponded to FET-PGT; 648 (42%) to FET0 and 355 (23%) to FET-DON cycles. Overall, 1051 (68%) embryos were frozen on day 5(D5), 472 (30.5%) on day 6(D6) and 23 (1.5%) on day 7(D7). As far as embryo quality was concerned, 215 (13.9%) grade A; 957 (61.9%) B; 371(24%) C and 3(0.2%) D blastocysts were transferred. LBRs were significantly different between different embryos frozen on D5 44.3%; on D6 28.8% and on D7 8.7%, p < 0.001. When blastocyst quality was considered, LBR were 48.4% for grade A; 42.5% for B; 25.1% for C and 0% for D, p < 0.001. After applying logistic regression analysis, the odds ratio (OR) for transferring D6-blastocyst was 1.08, 95% CI[0.45; 2.62] and blastocyst with grade B and C; 0.71, 95% CI[0.51; 1.00]; 0.57,95% CI[0.36; 0.88] respectively. However, after transferring D6-blastocyst graded as C, the OR was 0.33, 95% CI[0.12; 0.90]. Our predictive model showed that the impact of the embryo quality on LBR was sustained across three groups. Transfer of D5/D6 grade A blastocyst resulted in the highest, while D6-C in the lowest LBR in all the groups. In the latter case vitrification on D6 impaired additionally the outcome. Limitations, reasons for caution The study should be interpreted with caution due to its retrospective character and the assessment of blastocyst quality on the day of vitrification and not on the day its transfer. Wider implications of the findings: Our robust findings could be considered a useful tool for counselling couples who seek advice regarding their expected success rates in the setting of FET with SBT. The very low livebirth rates in low quality (C) slow developing (D6) embryos should be communicated to patients prior to planning a FET. Trial registration number Not applicable

Telomere Shortening and Fusions: A Link to Aneuploidy in Early Human Embryo Development

2021 ◽  
Vol 76 (7) ◽  
pp. 429-436
Author(s):  
Fabiana B. Kohlrausch ◽  
Fang Wang ◽  
Isaac Chamani ◽  
David L. Keefe
Keyword(s):  
Embryo Development ◽  
Human Embryo ◽  
Telomere Shortening ◽  
Human Embryo Development ◽  
Early Human
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