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Journal of Assisted Reproduction and Genetics

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https://www.readbyqxmd.com/read/29218446/cumulative-pregnancy-and-live-birth-rates-through-assisted-reproduction-in-women-44-45%C3%A2-years-of-age-is-there-any-hope
#1
Nili Raz, Amir Shalev, Eran Horowitz, Ariel Weissman, Yossi Mizrachi, Hadass Ganer Herman, Arieh Raziel
PURPOSE: The purpose of the study is to calculate the cumulative pregnancy rate and cumulative live birth rate in women undergoing in vitro fertilization (IVF) at ages 44-45. METHODS: The study calculated cumulative live pregnancy rate and cumulative live birth rate of 124 women aged 44 to 45 years old who commenced IVF treatment. MAIN OUTCOME MEASURES: The main outcome measures are cumulative live pregnancy rate and cumulative live birth rate...
December 7, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29204869/estrogen-treatment-in-infertile-women-with-premature-ovarian-insufficiency-in-transitional-phase-a-retrospective-analysis
#2
Sara Pinelli, Paolo Giovanni Artini, Stefano Basile, Maria Elena Rosa Obino, Claudia Sergiampietri, Diana Giannarelli, Giovanna Simi, Vito Cela
PURPOSE: During the transitional phase of premature ovarian insufficiency (POI), sporadic resumption of ovulation is possible because of fluctuation of hormonal levels but the chance of spontaneous pregnancy is low, and the main perspective of childbearing in these women is egg donation or adoption. The purpose of the study was to verify whether treatment with estrogens in POI patients in transitional phase could reduce FSH levels and to evaluate if this pre-treatment could improve reproductive outcomes of in vitro fertilization (IVF)...
December 5, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29204868/increased-live-births-after-day-5-versus-day-6-transfers-of-vitrified-warmed-blastocysts
#3
Alice Tubbing, Chloë Shaw-Jackson, Lieveke Ameye, Jérôme Colin, Serge Rozenberg, Candice Autin
PURPOSE: An investigation into the clinical implications of delayed blastulation (day 5 versus day 6) was carried out for cryo cycles, as heterogeneous results persist in the current literature. METHODS: We performed a retrospective study comparing clinical pregnancies and live births between 178 blastocysts vitrified and warmed on day 5 versus 149 on day 6. The stage of blastocyst development was taken into account and adjustment for confounding factors was performed...
December 4, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29178020/author-correction-a-novel-oocyte-maturation-trigger-using-1500%C3%A2-iu-of-human-chorionic-gonadotropin-plus-450%C3%A2-iu-of-follicle-stimulating-hormone-may-decrease-ovarian-hyperstimulation-syndrome-across-all-in-vitro-fertilization-stimulation-protocols
#4
Yanett Anaya, Douglas A Mata, Joseph Letourneau, Hakan Cakmak, Marcelle I Cedars, Mitchell P Rosen
The original version of this article unfortunately contained a mistake. The middle initial of Douglas A. Mata was omitted. The original article has been corrected.
November 25, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29170988/renaissance-reinvention-or-rhetoric-mitochondria-in-reproductive-medicine-2017
#5
EDITORIAL
David F Albertini
No abstract text is available yet for this article.
November 23, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29168022/no-advantage-of-fresh-blastocyst-versus-cleavage-stage-embryo-transfer-in-women-under-the-age-of-39-a-randomized-controlled-study
#6
Paolo Emanuele Levi-Setti, Federico Cirillo, Antonella Smeraldi, Emanuela Morenghi, Giulia E G Mulazzani, Elena Albani
PURPOSE: Is there a difference in implantation and pregnancy rates between embryos transferred electively at cleavage or blastocyst stage in infertile women ≤ 38 years with at least four zygotes on day 1 post retrieval? METHODS: A randomized clinical trial was conducted in a single tertiary care hospital with a sample size of 194 patients in each arm for a total population of 388 women. Patients less than 39 years of age with more than three fertilized oocytes and less than four previous assisted reproductive technology (ART) attempts were inclusion criteria...
November 22, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29164502/superovulation-alters-dna-methyltransferase-protein-expression-in-mouse-oocytes-and-early-embryos
#7
Fatma Uysal, Saffet Ozturk, Gokhan Akkoyunlu
PURPOSE: DNA methylation is an epigenetic mechanism that plays critical roles during mammalian oocyte and preimplantation embryo development. It is achieved by adding a methyl group to the fifth carbon atom of cytosine residues within cytosine-phosphate-guanine (CpG) and non-CpG dinucleotide sites using DNA methyltransferase (DNMT) enzymes for de novo and maintenance methylation processes. DNMT1, DNMT3A, and DNMT3B play important roles in establishing methylation of developmentally related genes in oocytes and early embryos...
November 22, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29152689/role-of-wnt-signaling-in-epididymal-sperm-maturation
#8
Jin-Mei Cheng, Ji-Xin Tang, Jian Li, Yu-Qian Wang, Xiu-Xia Wang, Yan Zhang, Su-Ren Chen, Yi-Xun Liu
PURPOSE: Spermatozoa maturation, a process required for spermatozoa to acquire progressive motility and the ability to fertilize ova, primarily occurs in the caput and corpus of the epididymis. Despite considerable efforts, the factor(s) promoting epididymal sperm maturation remains unclear. Recently, WNT signaling has been implicated in epididymal sperm maturation. METHODS: To further investigate WNT signaling function in epididymal sperm maturation, we generated Wntless conditional knockout mice (Wls cKO), Wls (flox/flox) ; Lcn5-Cre...
November 20, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29150736/effect-of-erythrocyte-sperm-separation-medium-on-nuclear-acrosomal-and-membrane-maturity-parameters-in-human-sperm
#9
Bikem Soygur, Soner Celik, Ciler Celik-Ozenci, Leyla Sati
PURPOSE: The purpose of this study is to investigate whether erythrocyte-sperm separation medium (ESSM) has effects on human sperm motility, morphology, viability, membrane maturity, acrosome integrity, and nuclear attributes before and after cryopreservation. METHODS: Semen samples from normozoospermic (n = 36) and oligozoospermic (n = 9) patients were analyzed. Samples from the same patient were divided into three aliquots: group 1 and group 2 were resuspended in sperm washing media and ESSM, respectively...
November 18, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29147846/hcg-administration-after-endogenous-lh-rise-negatively-influences-pregnancy-rate-in-modified-natural-cycle-for-frozen-thawed-euploid-blastocyst-transfer-a-pilot-study
#10
Katarzyna Litwicka, Cecilia Mencacci, Cristiana Arrivi, Maria Teresa Varricchio, Alina Caragia, Maria Giulia Minasi, Ermanno Greco
PURPOSE: The aim of the present study was to evaluate whether in a modified natural cycle (modified-NC) for a frozen-thawed single euploid blastocyst transfer, a critical LH value, above which human chorionic gonadotropin (hCG) administration should be avoided, may be defined. METHODS: One hundred and sixty-seven patients underwent modified natural cycle in order to transfer a single frozen-thawed euploid blastocyst. All embryos were obtained by intracytoplasmic sperm injection and were biopsied at the blastocyst stage and analyzed by means of array comparative genomic hybridization (aCGH)...
November 17, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29143944/one-thousand-seventy-eight-autologous-ivf-cycles-in-women-45%C3%A2-years-and-older-the-largest-single-center-cohort-to-date
#11
Vinay Gunnala, Mohamad Irani, Alexis Melnick, Zev Rosenwaks, Steven Spandorfer
PURPOSE: The purpose of this study was to determine IVF outcomes in women 45 years and older using autologous oocytes. METHODS: This is a retrospective cohort study reviewing all IVF cycles in women ≥ 45 years old from January 1995 to June 2015 that were conducted at one academic medical center. One thousand seventy-eight fresh, autologous IVF cycles met inclusion criteria. PGD/S, natural IVF, and donor egg cycles were excluded. Outcomes were analyzed for the different age groups (age 45, n = 773; age 46, n = 221; age 47, n = 57; age 48, n = 22; age 49, n = 5)...
November 16, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29143943/the-impact-of-ejaculatory-abstinence-on-semen-analysis-parameters-a-systematic-review
#12
REVIEW
Brent M Hanson, Kenneth I Aston, Tim G Jenkins, Douglas T Carrell, James M Hotaling
OBJECTIVE: The aim of this study was to evaluate recent publications and determine the impact of ejaculatory abstinence on semen analysis parameters as well as fertility outcomes. METHODS: This was a systematic review of 28 recent publications. The focus of this study was the impact of abstinence on semen parameters and fertility outcomes in papers published since the year 2000. The specific parameters evaluated were volume, sperm count, motility, morphology, pH, DNA fragmentation rate, viability, and pregnancy or fertilization rates following assisted reproduction...
November 16, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29134478/key-factors-enhancing-sperm-fertilizing-ability-are-transferred-from-the-epididymis-to-the-spermatozoa-via-epididymosomes-in-the-domestic-cat-model
#13
Tricia Rowlison, Mary Ann Ottinger, Pierre Comizzoli
PURPOSE: Spermatozoa undergo critical changes in structure and function during the epididymal transit. Our previous studies in the domestic cat demonstrated that incidence of cenexin-a key protein involved in the centrosomal maturation-progressively increases in sperm cells from caput to cauda epididymidis. The objectives of the study were to (1) characterize mechanisms involved in transferring key factors-using the cenexin as a marker-between the epididymis and maturing sperm cells and (2) demonstrate the impact of such mechanisms on the acquisition of functional properties by spermatozoa...
November 14, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29134477/difference-in-the-size-of-the-placenta-and-umbilical-cord-between-women-with-natural-pregnancy-and-those-with-ivf-pregnancy
#14
Atsushi Yanaihara, Shota Hatakeyama, Shirei Ohgi, Kenichirou Motomura, Ryoma Taniguchi, Aguri Hirano, Shin Takenaka, Takumi Yanaihara
PURPOSE: The purpose of this study was to compare the sizes of the placenta and umbilical cord in women with natural pregnancy versus those undergoing in vitro fertilization (IVF). METHODS: Overall, 1610 cases of uncomplicated single pregnancies with vaginal delivery at ≥ 37 weeks of gestation were included in this study. The patients were divided into two groups: natural pregnancy group (n = 1453) and IVF pregnancy not including intracytoplasmic sperm injection (ICSI) treatment (n = 157)...
November 14, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29128912/ovarian-stem-cells-resolving-controversies
#15
Deepa Bhartiya, Hiren Patel
A recent review on ovarian stem cells by Horan and Williams entitled "Oocyte Stem Cells: Fact or Fantasy?" suggests that the debate on ovarian stem cells (OSCs) is still not over. They did not even discuss the presence of two distinct populations of stem cells in the ovary in their review. OSCs are located in the ovary surface epithelium and Tilly's group reported them in the size range of 5-8 μm whereas Virant-Klun's group has reported pluripotent, 2-4 μm OSCs. Our group reported OSCs of two distinct sizes including pluripotent very small embryonic-like stem cells (VSELs) which are smaller in size than RBCs (similar to those reported by Virant-Klun's group) and slightly bigger (similar to those reported by Tilly's group) tissue committed progenitors (OSCs) that presumably differentiate from VSELs...
November 11, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29128911/why-the-way-we-look-at-things-in-reproductive-medicine-is-changing
#16
EDITORIAL
David F Albertini
No abstract text is available yet for this article.
November 11, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29128910/allogeneic-ovarian-transplantation-using-immunomodulator-preimplantation-factor-pif-as-monotherapy-restored-ovarian-function-in-olive-baboon
#17
Michael Feichtinger, Eytan R Barnea, Atunga Nyachieo, Mats Brännström, S Samuel Kim
PURPOSE: Allogeneic ovarian transplantation may be an alternative in the future to oocyte donation in women with premature ovarian failure. The objectives of this study were to (a) evaluate allotransplantation feasibility for restoration of ovarian function and (b) assess efficacy of synthetic preimplantation factor (PIF) monotherapy as sole immune-acceptance regimen. METHODS: This is an experimental animal study using non-human primates (Papio anubis). Allogeneic orthotopic ovarian tissue transplantation was performed in two female olive baboons...
November 11, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29124462/polymorphisms-of-mitochondrial-dna-control-region-are-associated-to-endometriosis
#18
Marina Paula Andres, Mari Maki Siria Godoy Cardena, Cintia Fridman, Sergio Podgaec
PURPOSE: Polymorphisms in the control region of mitochondrial DNA (mtDNA) can affect generation of reactive oxygen species and impact in the pathogenesis of endometriosis. This study investigated the association of mtDNA polymorphisms with endometriosis. METHODS: Patients were divided in two groups: endometriosis (n = 90) and control (n = 92). Inclusion criteria were as follows: women between 18 and 50 years, with histological diagnosis and surgical staging of endometriosis (endometriosis group) or undergoing gynecological surgery for tubal ligation, leiomyoma, or ovarian cysts, with no evidence of endometriosis (control group)...
November 9, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29124461/improvement-of-pregnancy-outcome-by-extending-embryo-culture-in-ivf-et-during-clinical-application
#19
Xiaopeng Zhao, Binbin Ma, Shaokang Mo, Lu Ma, Fei Chang, Liyuan Zhang, Fang Xu, Ling Wang
PURPOSE: The purpose of this study is to investigate the application value of the extended embryo culture for 7-8 h in day 3 morning during IVF-ET process. METHODS: Embryos were retrospectively assessed during 08:00-09:00 on the morning of day 3 in the control group, and were assessed once again at 16:00 in the afternoon in the extended culture (EC) group. The embryos with good developmental potential were preferentially selected to transfer. The cumulative pregnancy outcomes were analyzed in one oocyte retrieval cycle...
November 9, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29124460/medical-egg-freezing-the-importance-of-a-patient-centered-approach-to-fertility-preservation
#20
Marcia C Inhorn, Daphna Birenbaum-Carmeli, Lynn M Westphal, Joseph Doyle, Norbert Gleicher, Dror Meirow, Hila Raanani, Martha Dirnfeld, Pasquale Patrizio
PURPOSE: This binational qualitative study of medical egg freezing (MEF) examined women's motivations and experiences, including their perceived needs for patient-centered care in the midst of fertility- and life-threatening diagnoses. METHODS: Forty-five women who had undertaken MEF were interviewed in the USA (33 women) and in Israel (12 women) between June 2014 and August 2016. Interviews lasted approximately 1 h and were conducted by two senior medical anthropologists, one in each country...
November 9, 2017: Journal of Assisted Reproduction and Genetics
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