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Embryo transfer

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https://www.readbyqxmd.com/read/29051527/micro-ribonucleic-acids-and-extracellular-vesicles-repertoire-in-the-spent-culture-media-is-altered-in-women-undergoing-in-vitro-fertilization
#1
Masood Abu-Halima, Sebastian Häusler, Christina Backes, Tobias Fehlmann, Claudia Staib, Sigrun Nestel, Irina Nazarenko, Eckart Meese, Andreas Keller
MicroRNAs (miRNAs) are class of small RNA molecules with major impact on gene regulation. We analyzed the potential of miRNAs secreted from pre-implantation embryos into the embryonic culture media as biomarkers to predict successful pregnancy. Using microarray analysis, we profiled the miRNome of the 56 spent culture media (SCM) after embryos transfer and found a total of 621 miRNAs in the SCM. On average, we detected 163 miRNAs in SCM of samples with failed pregnancies, but only 149 SCM miRNAs of embryos leading to pregnancies...
October 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29050247/rnai-mediated-knockdown-of-parp1-does-not-improve-the-development-of-female-cloned-mouse-embryos
#2
Guang-Yu Bai, Si-Hang Song, Rui-Zhen Sun, Zi-Hui Zhang, Jingyu Li, Zhen-Dong Wang, Zhong-Hua Liu, Lei Lei
Somatic cell nuclear transfer is an important technique for life science research, but its efficiency is still extremely low, and most genes that are important during early development, such as X chromosome-linked genes, are not appropriately expressed during this process. Poly (ADP-ribose) polymerase (PARP) is an enzyme that transfers ADP ribose clusters to target proteins. PARP family members such as PARP1 participate in cellular signalling pathways through poly (ADP-ribosylation) (PARylation), which ultimately promotes changes in chromatin structure, gene expression, and the localization and activity of proteins that mediate signalling responses...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29048754/randomized-controlled-trial-of-the-effect-of-endometrial-injury-on-implantation-and-clinical-pregnancy-rates-during-the-first-icsi-cycle
#3
Ahmed M Maged, Hamsa Rashwan, Suzy AbdelAziz, Wafaa Ramadan, Walaa Ai Mostafa, Ahmed A Metwally, Maha Katta
OBJECTIVE: To assess whether endometrial injury in the cycle preceding controlled ovarian hyperstimulation during intracytoplasmic sperm injection (ICSI) improves the implantation and pregnancy rates. METHODS: Between January 1, 2016, and March 31, 2017, a randomized controlled trial was conducted at a center in Egypt among 300 women who met inclusion criteria (first ICSI cycle, aged <40 years, day-3 follicle-stimulating hormone <10 IU/L, normal serum prolactin, no uterine cavity abnormality)...
October 19, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/29047006/extended-culture-of-poor-quality-supernumerary-embryos-improves-art-outcomes
#4
Amira Sallem, Pietro Santulli, Virginie Barraud-Lange, Nathalie Le Foll, Lucile Ferreux, Chloé Maignien, Mathilde Bourdon, Charles Chapron, Dominique de Ziegler, Jean-Philippe Wolf, Khaled Pocate-Cheriet
PURPOSE: The aims of this study were to investigate the possible benefits of extending the culture of poor-quality day-2 embryos (PQE) versus good-quality embryos (GQE) and to identify factors associated with pregnancy and live birth when transferring frozen-thawed blastocysts originating from GQE and PQE. METHODS: This is a retrospective cohort follow-up study performed between November 2012 and February 2015 at the IVF Laboratory Unit of Cochin University Hospital (Paris, France) including 3108 day-2 supernumerary embryos resulting from 1237 IVF/ICSI cycles...
October 18, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29045563/generation-of-transgenic-marmosets-using-a-tetracyclin-inducible-transgene-expression-system-as-a-neurodegenerative-disease-model
#5
Ikuo Tomioka, Naotake Nogami, Terumi Nakatani, Kensuke Owari, Naoko Fujita, Hideyuki Motohashi, Osamu Takayama, Kentaro Takae, Yoshitaka Nagai, Kazuhiko Seki
Controllable transgene expression systems are indispensable tools for the production of animal models of disease to investigate protein functions at defined periods. However, in non-human primates that share genetic, physiological, and morphological similarities with humans, genetic modification techniques have not been well established; therefore, the establishment of novel transgenic models with controllable transgene expression systems will be valuable tools to understand pathological mechanism of human disease...
October 13, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29044426/p2x7-receptor-blockade-prevents-preterm-birth-and-perinatal-brain-injury-in-a-mouse-model-of-intrauterine-inflammation
#6
Michael E Tsimis, Jun Lei, Jason M Rosenzweig, Hattan Arif, Yahya Shabi, Wael Alshehri, Connie C Talbot, K Maravet Baig-Ward, James Segars, Ernest M Graham, Irina Burd
The P2X7 is an adenosine triphosphate (ATP)-gated ion channel involved in several facets of immune activation and neuronal function through its importance in interleukin (IL)-1β secretion. We hypothesized that blockade of P2X7 would prevent perinatal brain injury associated with exposure to intrauterine (IU) inflammation. Dams received 45 mg/kg of Brilliant Blue G (BBG), a specific P2X7 receptor (P2X7R) antagonist, on gestation day 17 (E17) prior to administration of lipopolysaccharide (LPS) or phosphate-buffered saline (PBS)...
August 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29043708/comparison-of-in-vitro-fertilization-intracytoplasmic-sperm-injection-cycle-outcome-in-patients-with-and-without-polycystic-ovary-syndrome-a-modified-poisson-regression-model
#7
Amir Almasi-Hashiani, Mohammad Ali Mansournia, Mahdi Sepidarkish, Samira Vesali, Azadeh Ghaheri, Arezoo Esmailzadeh, Reza Omani-Samani
Background: Polycystic ovary syndrome (PCOS) is a frequent condition in reproductive age women with a prevalence rate of 5-10%. This study intends to determine the relationship between PCOS and the outcome of assisted reproductive treatment (ART) in Tehran, Iran. MATERIALS AND METHODS: In this historical cohort study, we included 996 infertile women who referred to Royan Institute (Tehran, Iran) between January 2012 and December 2013. PCOS, as the main variable, and other potential confounder variables were gathered...
January 2018: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/29043003/tiaogeng-yijing-decoction-improves-the-pregnancy-outcomes-of-patients-with-poor-ovarian-response-undergoing-in-vitro-fertilization-embryo-transfer
#8
Hui Xue, Juan Dong, Huijun Xu, Xin Huang, Huangguan Dai, Cuifang Hao
The present study aimed to explore the therapeutic effects of the Tiaogeng Yijing decoction on patients with poor ovarian response (POR) undergoing in vitro fertilization-embryo transfer (IVF-ET), in addition to the underlying molecular mechanisms of these effects. A total of 40 patients were randomly and equally assigned to the treatment or control group. Patients in the treatment group received the Tiaogeng Yijing decoction continuously for three menstrual cycles in addition to microstimulation, while patients in the control group underwent microstimulation only...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29042680/sperm-borne-mir-449b-influences-cleavage-epigenetic-reprogramming-and-apoptosis-of-scnt-embryos-in-bovine
#9
Mengyun Wang, Yang Gao, Pengxiang Qu, Suzhu Qing, Fang Qiao, Yong Zhang, Jesse Mager, Yongsheng Wang
Accumulating evidence indicates the absence of paternally derived miRNAs, piwiRNAs, and proteins may be one important factor contributing to developmental failure in somatic cell cloned embryos. In the present study, we found microRNA-449b (miR-449b) was highly expressed in sperm. Target gene predictions and experimental verification indicate that several embryonic development-related genes, including CDK6, c-MYC, HDAC1 and BCL-2, are targets of miR-449b. We therefore investigated the role of miR-449b using somatic cell nuclear transfer (SCNT) embryo model...
October 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29041973/the-establishment-and-application-of-preimplantation-genetic-haplotyping-in-embryo-diagnosis-for-reciprocal-and-robertsonian-translocation-carriers
#10
Shuo Zhang, Caixia Lei, Junping Wu, Jing Zhou, Haiyan Sun, Jing Fu, Yijuan Sun, Xiaoxi Sun, Daru Lu, Yueping Zhang
BACKGROUND: Preimplantation genetic diagnosis (PGD) is now widely used to select embryos free of chromosomal copy number variations (CNV) from chromosome balanced translocation carriers. However, it remains a difficulty to distinguish in embryos between balanced and structurally normal chromosomes efficiently. METHODS: For this purpose, genome wide preimplantation genetic haplotyping (PGH) analysis was utilized based on single nucleotide polymorphism (SNP) microarray...
October 17, 2017: BMC Medical Genomics
https://www.readbyqxmd.com/read/29041843/embryo-transfer-is-a-risk-factor-for-severe-postpartum-hemorrhage-and-blood-transfusion-requirement
#11
Shohei Noguchi, Takeshi Murakoshi, Hiroko Konno, Mitsuru Matsushita, Minako Matsumoto
PURPOSE: This study aimed to investigate the risk factors for severe postpartum hemorrhage (PPH) and blood transfusion requirement that are recognizable during any period of pregnancy. MATERIALS AND METHODS: We retrospectively reviewed the medical data of 4829 pregnant women who received care and delivered at our institution between July 2010 and March 2015. The cohort was divided into patients with and without severe PPH. Multivariate logistic regression analysis was performed to assess risk factors associated with severe PPH...
October 17, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29040878/c-phycocyanin-supplementation-during-in%C3%A2-vitro-maturation-enhances-pre-implantation-developmental-competence-of-parthenogenetic-and-cloned-embryos-in-pigs
#12
Shuang Liang, Jing Guo, Yong Xun Jin, Bao Yuan, Jia-Bao Zhang, Nam-Hyung Kim
C-Phycocyanin (C-PC), a protein from green microalgae, has been suggested to possess various biological activities, including antioxidant and free radical scavenging properties. The aim of the current study was to explore the effects of C-PC on the maturation of porcine oocytes and subsequent developmental competence after parthenogenetic activation and somatic cell nuclear transfer (SCNT) as well as the underlying mechanisms. There was no significant improvement in nuclear maturation rates between the control and C-PC supplementation groups (1, 3, 5, 10 μg/mL)...
September 8, 2017: Theriogenology
https://www.readbyqxmd.com/read/29040638/low-serum-progesterone-on-the-day-of-embryo-transfer-is-associated-with-a-diminished-ongoing-pregnancy-rate-in-oocyte-donation-cycles-after-artificial-endometrial-preparation-a-prospective-study
#13
E Labarta, G Mariani, N Holtmann, P Celada, J Remohí, E Bosch
STUDY QUESTION: Is there a relationship between serum progesterone (P) and endometrial volume on the day of embryo transfer (ET) with ongoing pregnancy rate (OPR) in artificial endometrium preparation cycles? SUMMARY ANSWER: Patients with serum P < 9.2 ng/ml on the day of ET had a significantly lower OPR but endometrial volume was not related with OPR. WHAT IS KNOWN ALREADY: A window of optimal serum P levels during the embryo implantation period has been described in artificial endometrium preparation cycles...
October 13, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29040606/pinopode-score-around-the-time-of-implantation-is-predictive-of-successful-implantation-following-frozen-embryo-transfer-in-hormone-replacement-cycles
#14
X Y Jin, L J Zhao, D H Luo, L Liu, Y D Dai, X X Hu, Y Y Wang, X Lin, F Hong, T C Li, S Y Zhang
STUDY QUESTION: Is pinopode measurement of any prognostic value? SUMMARY ANSWER: Pinopode expression was significantly associated with the occurrence of pregnancy after frozen embryo transfer. WHAT IS KNOWN ALREADY: Pinopodes are expressed in the endometrium during the implantation period. Pinopode measurement has been proposed as a marker of endometrial receptivity. STUDY DESIGN, SIZE, DURATION: A prospective cohort study was conducted at the Center of Reproductive Medicine, Sir Run Run Shaw Hospital, between 2014 and 2016, recruiting 172 women with infertility and undergoing frozen embryo transfer following IVF treatment...
October 13, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29040570/cumulative-live-birth-rates-following-miscarriage-in-an-initial-complete-cycle-of-ivf-a-retrospective-cohort-study-of-112-549-women
#15
Natalie J Cameron, Siladitya Bhattacharya, Sohinee Bhattacharya, David J McLernon
STUDY QUESTION: In women undergoing IVF/ICSI who miscarry in their first complete cycle, what is the chance of a live birth in subsequent complete cycles, and how does this compare with those whose first complete cycle ends with live birth or without a pregnancy? SUMMARY ANSWER: After two further complete cycles of IVF/ICSI, women who had miscarried or had a live birth in their first complete cycle had a higher chance of live birth (40.9 and 49.0%, respectively) than those who had no pregnancies (30...
September 20, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29040520/clinical-implications-of-mitochondrial-dna-quantification-on-pregnancy-outcomes-a-blinded-prospective-non-selection-study
#16
Elpida Fragouli, Caroline McCaffrey, Krithika Ravichandran, Katharina Spath, James A Grifo, Santiago Munné, Dagan Wells
STUDY QUESTION: Can quantification of mitochondrial DNA (mtDNA) in trophectoderm (TE) biopsy samples provide information concerning the viability of a blastocyst, potentially enhancing embryo selection and improving IVF treatment outcomes? SUMMARY ANSWER: This study demonstrated that euploid blastocysts of good morphology, but with high mtDNA levels had a greatly reduced implantation potential. WHAT IS KNOWN ALREADY: Better methods of embryo selection leading to IVF outcome improvement are necessary, as the transfer of chromosomally normal embryos of high morphological grade cannot guarantee the establishment of an ongoing pregnancy...
September 23, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29040519/high-gonadotropin-dosage-does-not-affect-euploidy-and-pregnancy-rates-in-ivf-pgs-cycles-with-single-embryo-transfer
#17
Oleksii O Barash, Mary D Hinckley, Evan M Rosenbluth, Kristen A Ivani, Louis N Weckstein
STUDY QUESTION: Does high gonadotropin dosage affect euploidy and pregnancy rates in PGS cycles with single embryo transfer? SUMMARY ANSWER: High gonadotropin dosage does NOT affect euploidy and pregnancy rates in PGS cycles with single embryo transfer. WHAT IS KNOWN ALREADY: PGS has been proven to be the most effective and reliable method for embryo selection in IVF cycles. Euploidy and blastulation rates decrease significantly with advancing maternal age...
October 12, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29039978/preimplantation-genetic-testing-current-challenges-and-future-prospects
#18
Anver Kuliev, Svetlana Rechitsky
Preimplantation genetic testing (PGT) is now a widely applied procedure in genetic practices and ART, with more than one third of ART Centers in US already utilizing PGT technology. Its indications have also been significantly extended to include common late-onset disorders and non-genetic conditions, such as testing for HLA match. Areas covered: This is a critical review of the developments in PGT, with emphasis on their outstanding limitations and directions for the future research and practice in the area of PGT...
October 17, 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/29039173/-effects-of-embryo-cryopreservation-and-thawing-on-clinical-outcomes-of-transplantable-embryos-after-cleavage-stage-preimplantation-genetic-diagnosis-or-screening
#19
Biwei Shi, Long Cui, Xiaoqun Ye, Yinghui Ye
OBJECTIVE: To investigate the effects of embryo cryopreservation and thawing on clinical outcomes of transplantable embryos after preimplantation genetic diagnosis (PGD) or preimplantation genetic screening (PGS) in cleavage-stage. METHODS: The clinical data of 302 cases (including 118 cases using frozen/thawing embryos and 184 cases using fresh embryos) undergoing PGD/PGS in Women's Hospital, Zhejiang University School of Medicine during January 2011 and December 2016 were retrospectively analyzed...
May 25, 2017: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/29039172/-effect-of-oxygen-concentration-on-outcome-of-in-vitro-fertilization-embryo-transfer
#20
Enshu Li, Xiaoqun Ye, Li Fang, Yinghui Ye
OBJECTIVE: To investigate the effect of low and high oxygen concentration on embryo development, pregnancy outcome and birth defects of in vitro fertilization-embryo transfer (IVF-ET). METHODS: According to the oxygen concentration of in vitro culture environment, the IVF-ET performed in the Women's Hospital, Zhejiang University School of Medicine during 2013 and 2015 were divided into low oxygen concentration group (n=2036, 5% O2) and high oxygen concentration group (n=4617, 20% O2)...
May 25, 2017: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
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