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https://www.readbyqxmd.com/read/28718080/a-comparison-of-live-birth-rates-and-perinatal-outcomes-between-cryopreserved-oocytes-and-cryopreserved-embryos
#1
Jacqueline R Ho, Irene Woo, Kristin Louie, Wael Salem, Sami I Jabara, Kristin A Bendikson, Richard J Paulson, Karine Chung
PURPOSE: Prior studies suggest that pregnancy outcomes after autologous oocyte cryopreservation are similar to fresh in vitro fertilization (IVF) cycles. It is unknown whether there are differences in pregnancy and perinatal outcomes between cryopreserved oocytes and cryopreserved embryos. METHODS: This is a retrospective cohort study comparing pregnancy and perinatal outcomes between oocyte and embryo cryopreservation at a university-based fertility center. We included 42 patients and 68 embryo transfers in patients who underwent embryo transfer after elective oocyte preservation (frozen oocyte-derived embryo transfer (FOET)) from 2005 to 2015...
July 17, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28711250/genetic-analysis-for-quality-of-frozen-embryos-produced-by-holstein-cattle-donors-in-canada
#2
C Jaton, F S Schenkel, F Malchiodi, M Sargolzaei, C A Price, C Baes, F Miglior
The number of embryos produced by Holstein donors has been shown to be heritable, so it could be possible to genetically select for this trait to improve the efficiency of the assisted reproductive technology (ART) in dairy cattle. Another important parameter to consider for achieving good results from ART is embryo quality because embryos of good quality have more chance of producing live offspring. The possibility of using genetic selection for increasing the quality of embryo produced from ART has yet to be assessed...
July 12, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28687208/assisted-reproduction-techniques-in-latin-america-the-latin-american-registry-2014
#3
Fernando Zegers-Hochschild, Juan Enrique Schwarze, Javier Crosby, Carolina Musri, Maria Teresa Urbina
Multinational data on assisted reproduction techniques (IVF and intractytoplasmic sperm injection [ICSI], frozen embryo transfer, oocyte donation, preimplantation genetic diagnosis and fertility preservation) were collected from 159 institutions in 15 Latin American countries. A total of 41.34% of IVF-ICSI cycles were conducted in women aged 35-39 years and 23.35% in women aged 40 years and older. After removing freeze-all cases, delivery rate per oocyte retrieval was 25.05% for ICSI and 27.41% for IVF. Multiple births included 20...
June 21, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28687207/high-risk-of-preterm-birth-and-low-birth-weight-after-oocyte-donation-ivf-analysis-of-133-785-live-births
#4
Mohan Shashikant Kamath, Belavendra Antonisamy, Mariano Mascarenhas, Sesh Kamal Sunkara
A higher risk of pregnancy complications occurs after assisted reproductive techniques compared with spontaneously conceived pregnancies. This is attributed to the underlying infertility and assisted reproduction technique procedures involved during treatment. It is a matter of interest whether use of donor oocytes affects perinatal outcomes compared with pregnancies after autologous IVF. Anonymized data were obtained from the Human Fertilization and Embryology Authority. The analysis included 5929 oocyte donation and 127,856 autologous IVF live births...
June 22, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28685817/the-impact-of-an-increased-progesterone-to-follicle-number-ratio-on-live-delivery-rates-in-women-with-normal-ovarian-reserve
#5
Ya Chen, Ling Ma, Suqing Wang
OBJECTIVE: To explore the relationship between progesterone-follicle number (P/F) ratio and live delivery rate in patients with normal ovarian reserve undergoing cleavage-stage embryo transfer with a long gonadotropin-releasing hormone agonist cycle. METHODS: The present retrospective study included data from patients younger than 38 years with normal ovarian reserve who were undergoing in vitro fertilization/intracytoplasmic sperm injection and embryo transfer at Zhongnan Hospital, Wuhan University, China, between January 1, 2009 and December 31, 2015...
July 6, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28675921/cycle-regimens-for-frozen-thawed-embryo-transfer
#6
REVIEW
Tarek Ghobara, Tarek A Gelbaya, Reuben Olugbenga Ayeleke
BACKGROUND: Among subfertile couples undergoing assisted reproductive technology (ART), pregnancy rates following frozen-thawed embryo transfer (FET) treatment cycles have historically been found to be lower than following embryo transfer undertaken two to five days following oocyte retrieval. Nevertheless, FET increases the cumulative pregnancy rate, reduces cost, is relatively simple to undertake and can be accomplished in a shorter time period than repeated in vitro fertilisation (IVF) or intracytoplasmic sperm injection (ICSI) cycles with fresh embryo transfer...
July 5, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28666459/towards-a-better-understanding-of-preimplantation-genetic-screening-for-aneuploidy-insights-from-a-virtual-trial-for-women-under-the-age-of-40-when-transferring-embryos-one-at-a-time
#7
Paul N Scriven
BACKGROUND: The aim of this theoretical study is to explore the cost-effectiveness of aneuploidy screening in a UK setting for every woman aged under the age of 40 years when fresh and vitrified-warmed embryos are transferred one at a time in a first full cycle of assisted conception. METHODS: It is envisaged that a 24-chromosome genetic test for aneuploidy could be used to exclude embryos with an abnormal test result from transfer, or used only to rank embryos with the highest potential to be viable; the effect on cumulative outcome is assessed...
June 30, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28639180/initial-maternal-serum-human-chorionic-gonadotropin-levels-in-pregnancies-achieved-after-assisted-reproductive-technology-are-higher-after-preimplantation-genetic-screening-and-after-frozen-embryo-transfer-a-retrospective-cohort
#8
Elie Hobeika, Sonali Singh, Shaveta Malik, Eric S Knochenhauer, Michael L Traub
PURPOSE: Few published articles have compared initial hCG values across all different types of ART cycles, including cycles with fresh or frozen embryo transfer. No articles have compared initial hCG values in cycles utilizing preimplantation genetic screening (PGS). The purpose of this study is to compare initial hCG values after fresh embryo transfer, frozen embryo transfer, and after PGS. METHODS: This was a single-center retrospective cohort study at an academically affiliated private IVF center...
June 21, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28638367/gnrh-agonist-trigger-and-lh-activity-luteal-phase-support-versus-hcg-trigger-and-conventional-luteal-phase-support-in-fresh-embryo-transfer-ivf-icsi-cycles-a-systematic-prisma-review-and-meta-analysis
#9
REVIEW
Thor Haahr, Matheus Roque, Sandro C Esteves, Peter Humaidan
INTRODUCTION: The use of GnRH agonist (GnRHa) for final oocyte maturation trigger in oocyte donation and elective frozen embryo transfer cycles is well established due to lower ovarian hyperstimulation syndrome (OHSS) rates as compared to hCG trigger. A recent Cochrane meta-analysis concluded that GnRHa trigger was associated with reduced live birth rates (LBRs) in fresh autologous IVF cycles compared to hCG trigger. However, the evidence is not unequivocal, and recent trials have found encouraging reproductive outcomes among couples undergoing GnRHa trigger and individualized luteal LH activity support...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28633287/genetic-diseases-and-aneuploidies-can-be-detected-with-a-single-blastocyst-biopsy-a-successful-clinical-approach
#10
Maria Giulia Minasi, Francesco Fiorentino, Alessandra Ruberti, Anil Biricik, Elisabetta Cursio, Ettore Cotroneo, Maria Teresa Varricchio, Matteo Surdo, Francesca Spinella, Ermanno Greco
STUDY QUESTION: Can simultaneous detection of aneuploidies and genetic diseases or chromosomal aberrations in blastocysts reduce the chance of transferring embryos with low implantation potential, guaranteeing good clinical outcomes? SUMMARY ANSWER: The screening for chromosomal aneuploidies revealed that 50.6% of blastocysts diagnosed free of genetic disease or balanced, were aneuploid, therefore avoiding the transfer of blastocysts potentially resulting in implantation failures, miscarriages, or in some cases, in health affected live births...
June 12, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28632990/shortening-gametes-co-incubation-time-improves-live-birth-rate-for-couples-with-a-history-of-fragmented-embryos
#11
Anne Le Bras, Laetitia Hesters, Vanessa Gallot, Cathie Tallet, Gerard Tachdjian, Nelly Frydman
Short gamete co-incubation (SGCO) consists in decreasing the duration of contact between oocytes and sperm from the standard overnight insemination (SOI) toward 2 hours. However, the effectiveness of this technique to improve in vitro fertilization and embryo transfer (IVF-ET) outcomes remains controversial. Our study was designed to evaluate the efficiency of SGCO in a poor prognosis population with a history of fragmented embryos defined by the presence of at least 50% of the embryos with more than 25% of cytoplasmic fragments...
June 20, 2017: Systems Biology in Reproductive Medicine
https://www.readbyqxmd.com/read/28625759/predictive-value-of-serum-hcg-concentrations-in-pregnancies-achieved-after-single-fresh-or-vitrified-warmed-blastocyst-transfer
#12
Galia Oron, Tal Shavit, Efrat Esh-Broder, Son Weon-Young, Togas Tulandi, Hananel Holzer
Possible differences between serum HCG levels in pregnancies achieved after transfer of a single fresh or a vitrified-warmed blastocyst were evaluated. Out of 1130 single blastocyst transfers resulting in positive HCG results, 789 were single fresh blastocyst transfers and 341 single vitrified-warmed blastocyst transfers. The initial serum HCG levels of 869 clinical intrauterine pregnancies were evaluated, 638 after the transfer of a single fresh blastocysts and 231 after the transfer of a single vitrified-warmed blastocysts...
May 30, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28619101/in-vitro-production-of-bovine-embryos-derived-from-individual-donors-in-the-corral-%C3%A2-dish
#13
Maaike Catteeuw, Eline Wydooghe, Erik Mullaart, Hiemke M Knijn, Ann Van Soom
BACKGROUND: Since the identity of the embryo is of outmost importance during commercial in vitro embryo production, bovine oocytes and embryos have to be cultured strictly per donor. Due to the rather low yield of oocytes collected after ovum pick-up (OPU) per individual cow, oocyte maturation and embryo culture take place in small groups, which is often associated with inferior embryo development. The objective of this study was to improve embryonic development in small donor groups by using the Corral(®) dish...
June 15, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28606454/high-oestradiol-concentration-after-ovarian-stimulation-is-associated-with-lower-maternal-serum-beta-hcg-concentration-and-neonatal-birth-weight
#14
Suying Liu, Yanping Kuang, Yu Wu, Yun Feng, Qifeng Lyu, Li Wang, Yijuan Sun, Xiaoxi Sun
In this retrospective study, the relationship between maternal serum oestradiol and progesterone levels after fresh embryo transfer or frozen embryo transfer (FET), and serum beta-HCG levels in early pregnancy and neonatal birth weight was examined. Included for analysis were 5643 conceived singletons: 2610 after FET and 3033 after fresh embryo transfer. Outcome measures included maternal serum oestradiol, progesterone, beta-HCG levels during the peri-implantation period, birth weight and small-for-gestational-age (SGA)...
May 22, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28606451/peak-serum-estradiol-level-during-controlled-ovarian-stimulation-is-not-associated-with-lower-levels-of-pregnancy-associated-plasma-protein-a-or-small-for-gestational-age-infants-a-cohort-study
#15
Caitlin Dunne, Kristy Cho, Angel Shan, Jennifer Hutcheon, Ursula Smith Durland, Ken Seethram, Jon C Havelock
OBJECTIVE: During controlled ovarian stimulation in IVF, supraphysiologic levels of estradiol (E2) have been associated with poor placentation and adverse pregnancy outcomes. This study aimed to investigate whether high peak E2 on the day of human chorionic gonadotropin trigger is associated with low pregnancy-associated plasma protein-A (PAPP-A) and adverse perinatal outcomes. METHODS: We performed a retrospective cohort study at a private, university-affiliated fertility centre in Vancouver, BC...
June 9, 2017: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28601378/gnrh-agonist-administration-prior-to-embryo-transfer-in-freeze-all-cycles-of-patients-with-endometriosis-or-aberrant-endometrial-integrin-expression
#16
Eric S Surrey, Mandy Katz-Jaffe, Laxmi V Kondapalli, Robert L Gustofson, William B Schoolcraft
Prolonged gonadotrophin-releasing hormone agonist (GnRHa) administration before IVF with fresh embryo transfer to patients with endometriosis or aberrant endometrial integrin expression (-integrin) improves outcomes but may suppress ovarian response and prevents elective cryopreservation of all embryos. This retrospective cohort pilot study evaluates freeze-all cycles with subsequent prolonged GnRHa before embryo transfer in these populations. Patients from 2010 to 2015 who met inclusion criteria and received a long-acting GnRHa every 28 days twice before FET were evaluated...
May 17, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28600920/frozen-embryo-transfer-or-fresh-embryo-transfer-clinical-outcomes-depend-on-the-number-of-oocytes-retrieved
#17
Bing Xu, Ya-Qiong He, Yuan Wang, Yao Lu, Yan Hong, Yao Wang, Yun Sun
OBJECTIVE: To establish a safe and effective clinical transplantation strategy for determining when to prioritize frozen embryo transfers (FET) or fresh embryo transfers (ET) we conducted a retrospective analysis study, examining several key clinical outcomes. STUDY DESIGN: In a retrospective cohort study, 1423 patients (age<40) were categorized into four groups according to the number of oocytes retrieved (15-18, 19-21, 22-24 and  ≥25 oocytes). The clinical outcomes of 1423 in vitro fertilization (IVF) cycles (896 fresh ET and 527 FET) were reviewed for each group...
June 3, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28587385/gnrh-antagonist-for-patients-with-polycystic-ovary-syndrome-undergoing-controlled-ovarian-hyperstimulation-for-in-vitro-fertilization-and-embryo-transfer-in-fresh-cycles
#18
Xiang-Hong Zhai, Ping Zhang, Feng-Xia Wu, An-Cong Wang, Pei-Shu Liu
The aim of the present study was to evaluate the influence of a gonadotropin-releasing hormone (GnRH) antagonist compared with a GnRH agonist on the in vitro fertilization cycle outcome in patients with polycystic ovary syndrome. The outcomes of pregnancy were evaluated. The area under the curve (AUC) of the receiver operating characteristic (ROC) curve was also used to evaluate whether the endometrial thickness (cm) and estradiol (E2) level (pg/ml) on the day of human chorionic gonadotropin (hCG) administration (the hCG day) had the best sensitivity and specificity for predicting a clinical pregnancy...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28585131/predictive-value-of-initial-serum-human-chorionic-gonadotropin-levels-for-pregnancies-after-single-fresh-and-frozen-blastocyst-transfer
#19
Wei-E Zhao, Yu-Jie Li, Jian-Ping Ou, Peng Sun, Wen-Qiu Chen, Xiao-Yan Liang
As one of the earliest markers for predicting pregnancy outcomes, human chorionic gonadotropin (hCG) values have been inconclusive on reliability of the prediction after frozen and fresh embryo transfer (ET). In this retrospective study, patients with positive hCG (day 12 after transfer) were included to examine the hCG levels and their predictive value for pregnancy outcomes following 214 fresh and 1513 vitrified-warmed single-blastocyst transfer cycles. For patients who got clinical pregnancy, the mean initial hCG value was significantly higher after frozen cycles than fresh cycles, and the similar result was demonstrated for patients with live births (LB)...
June 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/28583140/live-birth-after-fresh-versus-frozen-single-blastocyst-transfer-frefro-blastocyst-study-protocol-for-a-randomized-controlled-trial
#20
Daimin Wei, Yun Sun, Jiayin Liu, Xiaoyan Liang, Yimin Zhu, Yuhua Shi, Zi-Jiang Chen
BACKGROUND: Multiple pregnancies are one of the major safety concerns of in vitro fertilization (IVF) due to the increased risk of maternal and neonatal complications. Single embryo transfer is the most effective way to reduce the risk of multiple pregnancies. Selection of the embryo and optimization of the implantation environment are crucial to retain the success rate when the number of transferred embryos is diminished. Fresh embryo transfer with supra-physiological levels of hormones has been suggested to have an adverse effect on implantation...
June 5, 2017: Trials
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