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https://www.readbyqxmd.com/read/28100115/paternal-age-is-not-associated-with-pregnancy-outcomes-after-single-thawed-euploid-blastocyst-transfer
#1
Ashley W Tiegs, Nidhee M Sachdev, Jamie A Grifo, David H McCulloh, Frederick Licciardi
Although controversial, increasing paternal age has been shown to negatively affect assisted reproductive technology (ART) outcomes and success rates. Most studies investigating the effect of paternal age on ART outcomes use a donor oocyte model to minimize maternal aneuploidy contribution. This study sought to determine whether increasing paternal age is associated with adverse in vitro fertilization (IVF) outcomes when aneuploidy is minimized using preimplantation genetic screening. There were 573 single thawed euploid embryo transfers from 473 patients undergoing oocyte donor and autologous IVF cycles...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28097780/a-man-made-disease-fetal-neonatal-alloimmune-thrombocytopenia-due-to-incompatibility-between-oocyte-donor-and-gestational-mother
#2
Assaf Arie Barg, Aviya Dvir Ifrah, Tzipi Strauss, Michal J Simchen, Raoul Orvieto, Nurit Rosenberg, Gili Kenet
The incompatibility causing fetal and neonatal alloimmune thrombocytopenia (FNAIT) results from a fetus inheriting a paternal human platelet antigen (HPA), which is different from the maternal HPA. We present a unique case of FNAIT in a pregnancy involving an oocyte recipient mother with Turner syndrome. This is the first report of FNAIT in which the suggested mechanism involves antibodies produced by a gestational mother against the incompatible HPA of the oocyte donor.
January 18, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28070808/combined-positive-effect-of-oocyte-extracts-and-brilliant-cresyl-blue-stained-recipient-cytoplasts-on-epigenetic-reprogramming-and-gene-expression-in-buffalo-nuclear-transfer-embryos
#3
E M Sadeesh, Shah Fozia, Kataria Meena
This study examined the effects of buffalo oocyte extracts (BOE) on donor cells reprogramming and molecular characterisation of oocytes screened via brilliant cresyl blue (BCB) staining and comparison of gene expression profiles of developmentally important genes in blastocysts from IVF and cloned derived from BOE treated donor cells with BCB selected recipient cytoplasts. Relative abundance (RA) of OCT4 and NANOG was increased (P < 0.05) and HDAC-1, DNMT-1, and DNMT-3A decreased (P < 0.05) in extract treated cells (ETCs)...
January 9, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28070055/superovulatory-responses-in-cynomolgus-monkeys-macaca-fascicularis-depend-on-the-interaction-between-donor-status-and-superovulation-method-used
#4
Ji-Su Kim, Seung-Bin Yoon, Kang-Jin Jeong, Bo-Woong Sim, Seon-A Choi, Sang-Il Lee, Yeung Bae Jin, Bong-Seok Song, Sang-Rae Lee, Sun-Uk Kim, Kyu-Tae Chang
The current study was performed to investigate the effect of oocyte donor status, including age and body weight, on metaphase II (MII) oocyte recovery using two superovulation methods in cynomolgus monkeys. The use of Method A [recombinant gonadotrophin (75 IU/kg, 3×, 3-day intervals) and human chorionic gonadotropin (hCG)] led to great increases in ovary size and the mean number of MII oocytes retrieved in age- and body-weight-dependent manner; in contrast, both the parameters were similar in Method B [recombinant gonadotrophin (60 IU, twice daily, 6 days), recombinant gonadotropin and recombinant human luteinizing hormone (rhLH) (60 IU, twice daily, 3 days), and hCG]...
January 9, 2017: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/28069900/impact-of-donor-and-recipient-adiposity-on-feto-placental-growth-in-adolescent-sheep
#5
Jacqueline M Wallace, John S Milne, Clare L Adam, Raymond P Aitken
The influence of maternal obesity during oocyte development and its putative interaction with nutrient reserves at conception on pregnancy outcome were examined in an adolescent sheep model. Donor ewes were nutritionally managed to achieve contrasting adiposity (control [CD]/obese [ObD]) for 6 weeks prior to superovulation, and inseminated by a non-obese sire. Morulae from 6 CD and 7 ObD were transferred in singleton into adolescent recipients of identical age but differing adiposity, classified as relatively fat or thin, respectively...
January 9, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28028772/hydroxypropyl-cellulose-supplementation-in-vitrification-solutions-a-prospective-study-with-donor-oocytes
#6
Miguel Gallardo, María Hebles, Beatriz Migueles, Mónica Dorado, Laura Aguilera, Mercedes González, Paloma Piqueras, Alejandro Lucas, Lorena Montero, Pascual Sánchez-Martín, Fernando Sánchez-Martín, Ramón Risco
PURPOSE: Hydroxypropyl cellulose (HPC), a polysaccharide that forms a viscous gel under low temperatures, is a promising substitute of the blood-derived macromolecules traditionally used in cryopreservation solutions. The performance of a protein-free, fully synthetic set of vitrification and warming solutions was assessed in a matched pair analysis with donor oocytes. METHODS: A prospective study including 219 donor MII oocytes was carried out, comparing the laboratory outcomes of oocytes vitrified with HPC-based solutions and their fresh counterparts...
December 27, 2016: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28010150/repeated-doses-of-gnrh-antagonist-at-midcycle-in-artificial-frozen-embryo-transfer-cycles-may-not-affect-pregnancy-outcomes
#7
Katherine L Palmerola, Jennifer Y Hsu, Lisa C Grossman, Mark V Sauer, Roger A Lobo
No significant differences in outcomes have been found between protocols of endometrial preparation for frozen embryo transfer (FET), though gonadotropin releasing hormone (GnRH) antagonists may have detrimental effects on the endometrium. We conducted a retrospective cohort noninferiority study at a single academic center of women receiving multiple doses of mid-cycle GnRH antagonist (GAnt) to those receiving GnRH agonist (GAg) to determine if there are detrimental effects of GnRH antagonists. 1047 FET cycles were identified, detailed data was available in 840 cycles: 610 GAg and 230 GAnt cycles...
December 23, 2016: Gynecological Endocrinology
https://www.readbyqxmd.com/read/27998857/-clinical-outcome-of-in-vitro-fertilization-or-intracytoplasmic-sperm-injection-embryo-transfer-in-women-aged-40-years-and-above
#8
Xing-Yu Zhou, Shu-Xian Feng, Xue-Lan Li, Yu-Dong Liu, Xin Chen, De-Sheng Ye, Jing Niu, Shi-Ling Chen
OBJECTIVE: To investigate the clinical outcomes in vitro fertilization or intracytoplasmic sperm injection-embryo transfer (IVF/ICSI-ET) in women aged over 40 years. METHODS: We retrospectively analyzed 1050 non-donor IVF/ICSI-ET cycles performed from January, 2007 to December, 2015 in women at the age 40 years or above, including 393 women at 40 years of age, 266 at 41 years, 158 at 42 years, 107 at 43 years, 64 at 44 years, and 65 at 45-51 years. The clinical characteristics and outcomes of the women in different age groups were compared and analyzed...
December 20, 2016: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/27977320/selection-of-high-quality-spermatozoa-may-be-promoted-by-activated-vitamin-d-in-the-woman
#9
Lasse Bøllehuus Hansen, Anders Rehfeld, Rosanna de Neergaard, John Erik Nielsen, Lea Hedegaard Iversen, Ida Marie Boisen, Li Juel Mortensen, Beate Lanske, Kristian Almstrup, Elisabeth Carlsen, Anders Hayden Berg, Niels Jørgensen, Anders Nyboe Andersen, Anders Juul, Martin Blomberg Jensen
CONTEXT: The vitamin D receptor (VDR) and enzymes involved in activation (CYP2R1, CYP27B1) and inactivation (CYP24A1) of vitamin D are expressed in ovary, testes, and spermatozoa. OBJECTIVE: Determine responsiveness to 1,25-dihydroxyvitamin D (1,25(OH)2D3) in spermatozoa from normal and infertile men, identify site of exposure and how 1,25(OH)2D3 influences sperm function. DESIGN: Spermatozoa expressing VDR, CYP2R1, CYP27B1, and CYP24A1 were analyzed in normal and infertile men...
December 15, 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27932551/antigen-unmasking-enhances-visualization-efficacy-of-the-oocyte-activation-factor-phospholipase-c-zeta-in-mammalian-sperm
#10
Junaid Kashir, Luke Buntwal, Michail Nomikos, Brian L Calver, Panagiotis Stamatiadis, Peter Ashley, Vyronia Vassilakopoulou, David Sanders, Paul Knaggs, Evangelia Livaniou, Adnan Bunkheila, Karl Swann, F Anthony Lai
STUDY QUESTION: Is it possible to improve clinical visualization of phospholipase C zeta (PLCζ) as a diagnostic marker of sperm oocyte activation capacity and male fertility? SUMMARY ANSWER: Poor PLCζ visualization efficacy using current protocols may be due to steric or conformational occlusion of native PLCζ, hindering antibody access, and is significantly enhanced using antigen unmasking/retrieval (AUM) protocols. WHAT IS KNOWN ALREADY: Mammalian oocyte activation is mediated via a series of intracellular calcium (Ca(2+)) oscillations induced by sperm-specific PLCζ...
December 8, 2016: Molecular Human Reproduction
https://www.readbyqxmd.com/read/27919073/mitochondrial-replacement-in-human-oocytes-carrying-pathogenic-mitochondrial-dna-mutations
#11
Eunju Kang, Jun Wu, Nuria Marti Gutierrez, Amy Koski, Rebecca Tippner-Hedges, Karen Agaronyan, Aida Platero-Luengo, Paloma Martinez-Redondo, Hong Ma, Yeonmi Lee, Tomonari Hayama, Crystal Van Dyken, Xinjian Wang, Shiyu Luo, Riffat Ahmed, Ying Li, Dongmei Ji, Refik Kayali, Cengiz Cinnioglu, Susan Olson, Jeffrey Jensen, David Battaglia, David Lee, Diana Wu, Taosheng Huang, Don P Wolf, Dmitry Temiakov, Juan Carlos Izpisua Belmonte, Paula Amato, Shoukhrat Mitalipov
Maternally inherited mitochondrial (mt)DNA mutations can cause fatal or severely debilitating syndromes in children, with disease severity dependent on the specific gene mutation and the ratio of mutant to wild-type mtDNA (heteroplasmy) in each cell and tissue. Pathogenic mtDNA mutations are relatively common, with an estimated 778 affected children born each year in the United States. Mitochondrial replacement therapies or techniques (MRT) circumventing mother-to-child mtDNA disease transmission involve replacement of oocyte maternal mtDNA...
December 8, 2016: Nature
https://www.readbyqxmd.com/read/27907920/aneuploidy-detection-and-mtdna-quantification-in-bovine-embryos-with-different-cleavage-onset-using-a-next-generation-sequencing-based-protocol
#12
Miroslav Hornak, David Kubicek, Petr Broz, Pavlina Hulinska, Katerina Hanzalova, Darren Griffin, Marie Machatkova, Jiri Rubes
Bovine embryos are now routinely used in agricultural systems as a means of disseminating superior genetics worldwide, ultimately with the aim of feeding an ever-growing population. Further investigations, common for human IVF embryos, thus have priority to improve cattle IVF, as has screening for aneuploidy (abnormal chromosome number). Although the incidence and consequences of aneuploidy are well documented in human preimplantation embryos, they are less well known for the embryos of other animals. To address this, we assessed aneuploidy levels in thirty-one 2-cell bovine embryos derived from early- and late-cleaving zygotes...
2016: Cytogenetic and Genome Research
https://www.readbyqxmd.com/read/27856185/utilization-of-third-party-in%C3%A2-vitro-fertilization-in-the-united%C3%A2-states
#13
Vitaly A Kushnir, Sarah K Darmon, Alice J Shapiro, David F Albertini, David H Barad, Norbert Gleicher
BACKGROUND: The use of in vitro fertilization that includes third-party in vitro fertilization is increasing. However, the relative contribution of third-party in vitro fertilization that includes the use of donor oocytes, sperm, or embryo and a gestational carrier to the birth cohort after in vitro fertilization is unknown. OBJECTIVE: The purpose of this study was to examine the contribution of third-party in vitro fertilization to the in vitro fertilization birth cohort over the past decade...
November 14, 2016: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27852688/the-role-of-intracytoplasmic-sperm-injection-in-non-male-factor-infertility-in-advanced-maternal-age
#14
Samer Tannus, Weon-Young Son, Ashley Gilman, Grace Younes, Tal Shavit, Michael-Haim Dahan
STUDY QUESTION: Does ICSI improve reproductive outcomes compared with conventional IVF when used for non-male factor infertility in women aged 40 years and over? SUMMARY ANSWER: There is no advantage of ICSI over conventional IVF in women aged 40 years and over when used for non-male factor infertility. WHAT IS KNOWN ALREADY: The use of ICSI has increased dramatically in recent years and is being applied for indications other than male factor infertility...
January 2017: Human Reproduction
https://www.readbyqxmd.com/read/27842997/cryopreserved-oocyte-versus-fresh-oocyte-assisted-reproductive-technology-cycles-united-states-2013
#15
Sara Crawford, Sheree L Boulet, Jennifer F Kawwass, Denise J Jamieson, Dmitry M Kissin
OBJECTIVE: To compare characteristics, explore predictors, and compare assisted reproductive technology (ART) cycle, transfer, and pregnancy outcomes of autologous and donor cryopreserved oocyte cycles with fresh oocyte cycles. DESIGN: Retrospective cohort study from the National ART Surveillance System. SETTING: Fertility treatment centers. PATIENT(S): Fresh embryo cycles initiated in 2013 utilizing embryos created with fresh and cryopreserved, autologous and donor oocytes...
January 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/27821591/re1-silencing-transcription-factor-rest-is-required-for-nuclear-reprogramming-by-inhibiting-transforming-growth-factor-%C3%AE-signaling-pathway
#16
Qing-Ran Kong, Bing-Teng Xie, Heng Zhang, Jing-Yu Li, Tian-Qing Huang, Ren-Yue Wei, Zhong-Hua Liu
Differentiated cells can be reprogrammed by transcription factors, and these factors that are responsible for successful reprogramming need to be further identified. Here, we show that the neuronal repressor RE1-silencing transcription factor (REST) is rich in porcine oocytes and requires for nuclear transfer (NT)-mediated reprogramming through inhibiting TGFβ signaling pathway. REST was dramatically degraded after oocyte activation, but the residual REST was incorporated into the transferred donor nuclei during reprogramming in NT embryos...
December 30, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27815560/nitric-oxide-no-stimulates-steroidogenesis-and-folliculogenesis-in-fish
#17
Vinay Kumar Singh, Bechan Lal
The present study was undertaken to understand the physiological significance of the existence of nitric oxide synthase (NOS)/nitric oxide (NO) system in fish ovary. For this, two doses of NO donor, sodium nitroprusside (SNP, 25 µg and 50 µg) and NOS inhibitor, N-nitro-l-arginine methyl ester (l-NAME, 50 µg and 100 µg)/100 g body weight were administered during the two reproductive phases of reproductive cycle of the Clarias batrachus During the late-quiescence phase, high dose of l-NAME decreased the NO, testosterone, 17β-estradiol, vitellogenin contents in serum and ovary and activities of 5-ene-3β-hydroxysteroid dehydrogenases (3β-HSD) and 17β-hydroxysteroid dehydrogenases (17β-HSD) in ovary, whereas higher dose of SNP increased these parameters...
February 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/27803583/use-of-clomiphene-based-stimulation-protocol-in-oocyte-donors-a-comparative-study
#18
Aparna Singh, Shilpa Bhandari, Pallavi Agrawal, Nitika Gupta, Niharika Munaganuru
INTRODUCTION: This study was undertaken to compare between clomiphene citrate (CC) and gonadotropin-releasing hormone antagonist-based protocols in donor-recipient cycles in terms of parameters of ovarian stimulation and obstetric outcome. MATERIALS AND METHODS: Two hundred and three fertile oocyte donors were stimulated using two different protocols: Clomiphene based (n = 103) and antagonist based (n = 100). Donors in the one group were stimulated from day 1 or 2 of spontaneous or withdrawal bleeds with CC (50 mg/day) and recombinant follicle-stimulating hormone (FSH) till the day of trigger while donors in the other group were stimulated using recombinant FSH from day 1 or 2, and the antagonist was added as per flexible antagonist protocol...
July 2016: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/27789184/a-limited-survey-based-uncontrolled-follow-up-study-of-children-born-after-ooplasmic-transplantation-in-a-single-centre
#19
Serena H Chen, Claudia Pascale, Maria Jackson, Mary Ann Szvetecz, Jacques Cohen
Experimental ooplasmic transplantation from donor to recipient oocyte took place between 1996 and 2001 at Saint Barnabas Medical Center, USA. Indication for 33 patients was repeated implantation failure. Thirteen couples had 17 babies. One patient delivered twins from mixed ooplasmic and donor egg embryos. A limited survey-based follow-up study on the children is reported: 12 out of 13 parents completed a questionnaire on pregnancy, birth, health, academic performance and disclosure. Parents of a quadruplet did not participate...
December 2016: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/27769207/neonatal-outcomes-in-pregnancies-resulting-from-oocyte-donation-a-cohort-study-in-sweden
#20
Evangelia Elenis, Gunilla Sydsjö, Alkistis Skalkidou, Claudia Lampic, Agneta Skoog Svanberg
BACKGROUND: Pregnancies resulting through oocyte donation have been associated with increased risk for adverse outcomes for the mother, such as gestational hypertensive disorders. However, little is known about possible neonatal complications of such pregnancies. The purpose of this study was to evaluate the neonatal health outcomes among singleton pregnancies in a population of relatively young and healthy oocyte recipients in Sweden, taking into account the medical indication leading to treatment...
October 21, 2016: BMC Pediatrics
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