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https://www.readbyqxmd.com/read/28108009/which-factors-are-most-predictive-for-live-birth-after-in%C3%A2-vitro-fertilization-and-intracytoplasmic-sperm-injection-ivf-icsi-treatments-analysis-of-100-prospectively-recorded-variables-in-8-400-ivf-icsi-single-embryo-transfers
#1
Katarina Kebbon Vaegter, Tatevik Ghukasyan Lakic, Matts Olovsson, Lars Berglund, Thomas Brodin, Jan Holte
OBJECTIVE: To construct a prediction model for live birth after in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) treatment and single-embryo transfer (SET) after 2 days of embryo culture. DESIGN: Prospective observational cohort study. SETTING: University-affiliated private infertility center. PATIENT(S): SET in 8,451 IVF/ICSI treatments in 5,699 unselected consecutive couples during 1999-2014. INTERVENTION(S): A total of 100 basal patient characteristics and treatment data were analyzed for associations with live birth after IVF/ICSI (adjusted for repeated treatments) and subsequently combined for prediction model construction...
January 6, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28102431/totipotency-in-the-mouse
#2
REVIEW
Guangming Wu, Lei Lei, Hans R Schöler
In mammals, the unicellular zygote starts the process of embryogenesis and differentiates into all types of somatic cells, including both fetal and extraembryonic lineages-in a highly organized manner to eventually give rise to an entire multicellular organism comprising more than 200 different tissue types. This feature is referred to as totipotency. Upon fertilization, oocyte maternal factors epigenetically reprogram the genomes of the terminally differentiated oocyte and spermatozoon and turn the zygote into a totipotent cell...
January 19, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/28100484/atf6-knock-down-decreases-apoptosis-arrests-the-s-phase-of-the-cell-cycle-and-increases-steroid-hormone-production-in-mouse-granulosa-cells
#3
Yongjie Xiong, Huatao Chen, Pengfei Lin, Aihua Wang, Lei Wang, Yaping Jin
Activating transcription factor 6 (ATF6) is an important factor in the endoplasmic reticulum (ER) stress signaling pathway. The aim of this study was to assess the role of ATF6 in mouse granulosa cells with respect to apoptosis, the cell cycle, and steroid hormone production, as well as several key genes related to follicular development, via RNA interference, immunohistochemical staining, real-time quantitative polymerase chain reaction, western blotting, flow cytometry, TUNEL assay, and ELISA. Immunohistochemical staining revealed that ATF6 was extensively distributed in the granulosa cells of various ovarian follicles and oocytes in adult female mice...
January 18, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28096217/high-throughput-analysis-reveals-novel-maternal-germline-rnas-crucial-for-primordial-germ-cell-preservation-and-proper-migration
#4
Dawn A Owens, Amanda M Butler, Tristan H Aguero, Karen M Newman, Derek Van Booven, Mary Lou King
During oogenesis, hundreds of maternal RNAs are selectively localized to the animal or vegetal pole, including determinants of somatic and germline fates. Although microarray analysis has identified localized determinants, it is not comprehensive and is limited to known transcripts. Here, we utilized high-throughput RNA-sequencing analysis to comprehensively interrogate animal and vegetal pole RNAs in the fully grown Xenopus laevis oocyte. We identified 411 (198 annotated) and 27 (15 annotated) enriched mRNAs at the vegetal and animal pole, respectively...
January 15, 2017: Development
https://www.readbyqxmd.com/read/28093265/developmental-tracing-of-oocyte-development-in-gonadal-soma-derived-factor-deficiency-medaka-oryzias-latipes-using-a-transgenic-approach
#5
Guijun Guan, Kaiqing Sun, Xi Zhang, Xiaomiao Zha, Mingyou Li, Yan Yan, Yunzhi Wang, Jianbin Chen, Meisheng Yi, Yunhan Hong
Gonadal soma-derived factor (gsdf) is reported to be a male initiator in medaka based on loss- and gain- of function via targeted disruption, or transgenic over-expression. However, little is known about how gsdf promotes undifferentiated gonad entry into male pathways or prevents entry into the female pathway. We utilized a visible folliculogenesis system with a reporter cassette of dual-color fluorescence expression to identify difference between oocyte development from wildtype and gsdf deficiency medaka...
January 13, 2017: Mechanisms of Development
https://www.readbyqxmd.com/read/28093199/effect-of-different-cryo-devices-on-in-vitro-maturation-and-development-of-vitrified-warmed-immature-buffalo-oocytes
#6
Yelisetti Uma Mahesh, Henderson Rose Winnie Gibence, Sisinthy Shivaji, Brahmasani Sambasiva Rao
The aim of the study was to identify a cryo-device that would be best suited for the vitrification of buffalo immature cumulus-oocyte complexes (COCs) as judged by viability and meiotic competence of the vitrified-warmed oocytes and their development ability following in vitro fertilization (IVF). The expression of oocyte secreting factors and their receptors (GDF9, BMP15, BMPR2, TGFBR1) and apoptosis related genes (BCL2, BAX, P53, C-MYC) were compared in vitrified-warmed oocytes after in vitro maturation. COCs from the ovaries of slaughtered buffaloes were vitrified in a combination of dimethyl sulfoxide, ethylene glycol, and sucrose using either a conventional straw (CS), open pulled straw (OPS), cryoloop (CL), hemistraw (HS) or cryotop (CT)...
January 13, 2017: Cryobiology
https://www.readbyqxmd.com/read/28090464/the-efficacy-of-intrauterine-instillation-of-granulocyte-colony-stimulating-factor-in-infertile-women-with-a-thin-endometrium-a-pilot-study
#7
Dayong Lee, Jae Dong Jo, Seul Ki Kim, Byung Chul Jee, Seok Hyun Kim
OBJECTIVE: The study aimed to investigate the efficacy of intrauterine instillation of granulocyte colony-stimulating factor (G-CSF) on the day of ovulation triggering or oocyte retrieval in infertile women with a thin endometrium. METHODS: Fifty women whose endometrial thickness (EMT) was ≤8 mm at the time of triggering during at least one previous in vitro fertilization (IVF) cycle and an index IVF cycle were selected. On the day of triggering (n=12) or oocyte retrieval (n=38), 300 µg of G-CSF was instilled into the uterine cavity...
December 2016: Clinical and Experimental Reproductive Medicine
https://www.readbyqxmd.com/read/28089945/zearalenone-exposure-impairs-ovarian-primordial-follicle-formation-via-down-regulation-of-lhx8-expression-in-vitro
#8
Guo-Liang Zhang, Xiao-Feng Sun, Yan-Zhong Feng, Bo Li, Ya-Peng Li, Fan Yang, Charles Martin Nyachoti, Wei Shen, Shi-Duo Sun, Lan Li
Zearalenone (ZEA) is an estrogenic mycotoxin mainly produced as a secondary metabolite by numerous species of Fusarium. Previous work showed that ZEA had a negative impact on domestic animals with regard to reproduction. The adverse effects and the mechanisms of ZEA on mammalian ovarian folliculogenesis remain largely unknown, particularly its effect on primordial follicle formation. Thus, we investigated the biological effects of ZEA exposure on murine ovarian germ cell cyst breakdown and primordial follicle assembly...
January 12, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28087314/a-protective-role-of-cumulus-cells-after-short-term-exposure-of-rat-cumulus-cell-oocyte-complexes-to-lifestyle-or-environmental-contaminants
#9
Kelly A Campen, Kenneth P McNatty, Janet L Pitman
Ovarian follicular fluid provides a potential reservoir for exogenous compounds that may adversely affect oocyte quality. This study examined the effects of common lifestyle and environmental contaminants, namely bisphenol-A (BPA), caffeine, 3,4-methylenedioxymethamphetamine (MDMA), nicotine and Δ(9)-tetrahydrocannabinol on gap junction genes (Gja1, Gja4) and proteins (GJA1), glucose metabolism genes (Gfpt1, Pfkp) and oocyte growth factor genes (Bmp15, Gdf9), as well as gap junction transfer rate, in rat cumulus-oocyte complexes (COCs)...
January 10, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28076980/status-of-sperm-born-oocyte-activating-factors-pawp-plc%C3%AE-and-sperm-chromatin-in-uncapacitated-capacitated-and-acrosome-reacted-conditions
#10
Marziyeh Tavalaee, Kazem Parivar, Abdol-Hossein Shahverdi, Kamran Ghaedi, Mohammad Hossein Nasr-Esfahani
The aim of this study was to investigate the value of sperm factors PAWP and PLCζ involved in oocyte activation and sperm chromatin status, as indicators of sperm quality during uncapacitated, capacitated and acrosome-reacted conditions. Semen samples collected from 10 normozoospermic men and sperm factors PAWP, PLCζ, protamine deficiency and DNA fragmentation evaluated in fresh samples, processed sample by DGC (density gradient centrifugation), capacitated and acrosome reacted sperm, using immunofluorescence and flow cytometry...
January 12, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28073973/human-foetal-ovary-shares-meiotic-preventing-factors-with-the-developing-testis
#11
Nelly Frydman, Marine Poulain, Brahim Arkoun, Clotilde Duquenne, Sophie Tourpin, Sébastien Messiaen, René Habert, Virginie Rouiller-Fabre, Alexandra Benachi, Gabriel Livera
STUDY QUESTION: How can pre-meiotic germ cells persist in the human foetal ovary? SUMMARY ANSWER: Numerous oogonia escaping meiotic entry were retrieved throughout human ovarian development simultaneously with the expression of signalling pathways preventing meiosis, typically described in the rodent embryonic testis. WHAT IS KNOWN ALREADY: The transition from mitosis to meiosis is a key event in female germ cells that remains poorly documented in research on the human ovary...
January 9, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28069903/improvement-of-in-vitro-produced-bovine-embryo-treated-with-coa-a-under-heat-stressed-condition
#12
Imran Khan, Kyeong-Lim Lee, Lianguang Xu, Ayman Mesalam, Mmr Chowdhury, Myeong-Don Joo, Ihsan-Ul- Haq, Bushra Mirza, Il-Keun Kong
Heat stress has large effects on reproduction including conception rate in cattle. In this study, we examined the effects of coagulansin-A (coa-A), a steroidal lactone, on acquired thermo tolerance during in vitro production of bovine embryos. Oocytes were incubated in in vitro maturation (IVM) media with or without coa-A at two different temperatures, 40.5 °C and 42 °C, for 20 h. The treatment of coa-A significantly improved blastocyst development only at 40.5 °C (P < 0.05). Interestingly, immunofluorescence analysis demonstrated that coa-A induced heat shock protein 70 (HSP70) and phosphatidylinositol-3-kinase (PI3K), but significantly attenuated nuclear factor kappa B (NF-kB) and cyclooxygenase-2 (COX2)...
January 9, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28069482/ovarian-response-and-in-vitro-fertilization-outcomes-after-salpingectomy-does-salpingectomy-indication-matter
#13
Nigel Pereira, Katherine P Pryor, Anna Voskuilen-Gonzalez, Jovana P Lekovich, Rony T Elias, Steven D Spandorfer, Zev Rosenwaks
STUDY OBJECTIVE: To investigate whether the ovarian response and pregnancy outcomes of patients undergoing in vitro fertilization (IVF) after salpingectomy is affected by the underlying indication for salpingectomy. DESIGN: Retrospective cohort study. DESIGN: Classification: II-3. SETTING: University-affiliated fertility center. PATIENTS: All patients <37 years of age undergoing IVF within 12 months of laparoscopic salpingectomy...
January 6, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28066836/a-comparative-study-on-the-results-of-agonist-and-antagonist-protocols-based-on-serum-amh-levels-in-patients-undergoing-intracytoplasmic-sperm-injection
#14
Fatemeh Nikmard, Behrouz Aflatoonian, Elham Hosseini, Abbas Aflatoonian, Mehrdad Bakhtiyari, Reza Aflatoonian
BACKGROUND: Serum concentrations of antimullerian hormone (AMH) correlate with ovarian response during assisted reproduction treatment (ART) cycles. OBJECTIVE: This retrospective study attempted to evaluate the selection of ovarian stimulation protocols based on serum AMH levels in patients and its impact on the results of ART. MATERIALS AND METHODS: Based on AMH levels, the patients with tubal factor infertility were divided in three groups of normal, low and high AMH levels...
December 2016: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/28066833/the-role-of-g-csf-in-recurrent-implantation-failure-a-randomized-double-blind-placebo-control-trial
#15
Fatemeh Davari-Tanha, Ensieh Shahrokh Tehraninejad, Mohadese Ghazi, Zahra Shahraki
BACKGROUND: Recurrent implantation failure (RIF) is the absence of implantation after three consecutive In Vitro Fertilization (IVF) cycles with transferring at least four good quality embryos in a minimum of three fresh or frozen cycles in a woman under 40 years. The definition and management of RIF is under constant scrutiny. OBJECTIVE: To investigate the effects of Granulocyte colony stimulating factor (G-CSF) on RIF, pregnancy rate, abortion rate and implantation rates...
December 2016: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/28063063/identifying-candidate-reprogramming-genes-in-mouse-induced-pluripotent-stem-cells
#16
Fang Gao, Jingyu Li, Heng Zhang, Xu Yang, Tiezhu An
Factor-based induced reprogramming approaches have tremendous potential for human regenerative medicine, but the efficiencies of these approaches are still low. In this study, we analyzed the global transcriptional profiles of mouse induced pluripotent stem cells (miPSCs) and mouse embryonic stem cells (mESCs) from seven different labs and present here the first successful clustering according to cell type, not by lab of origin. We identified 2131 different expression genes (DEs) as candidate pluripotency-associated genes by comparing mESCs/miPSCs with somatic cells and 720 DEs between miPSCs and mESCs...
January 6, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/28054671/natriuretic-peptide-type-c-induces-sperm-attraction-for-fertilization-in-mouse
#17
Nana Kong, Xiaoting Xu, Yu Zhang, Yakun Wang, Xiaoqiong Hao, Yu Zhao, Jie Qiao, Guoliang Xia, Meijia Zhang
Mammalian spermatozoa undergo selective movement along the isthmus of the oviduct to the ampulla during ovulation, which is a prerequisite for fertilization. The factor(s) that involves in selective spermatozoa movement is still unknown. In this study, we found that the oviductal epithelium in mouse ampulla expressed high levels of natriuretic peptide type C (NPPC) in the presence of ovulated oocyte-cumulus complexes (OCCs). Spermatozoa expressed NPPC receptor natriuretic peptide receptor 2 (NPR2, a guanylyl cyclase) on the midpiece of flagellum...
January 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28051267/reduced-expression-of-scf-in-serum-and-follicle-from-patients-with-polycystic-ovary-syndrome
#18
J Tan, X-Y Wen, Q Su, Z-H Huang, J-X He, C-L Xin, Q-F Wu, Y Zou
OBJECTIVE: In humans, stem cell factor (SCF), produced by cumulus granulosa cells during the follicular phase, plays a crucial role in follicular development. Remarkably, polycystic ovary syndrome (PCOS), one of the main reasons affecting women fertility, is accompanied by some abnormal follicles. Is there a relationship between SCF and PCOS? This study aimed to compare the expression of SCF in follicle and serum from patients with and without PCOS undergoing in vitro fertilization (IVF) treatment and to investigate the potential relationship between aberrant SCF expression and PCOS...
December 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28042543/relationship-between-potential-sperm-factors-involved-in-oocyte-activation-and-sperm-dna-fragmentation-with-intra-cytoplasmic-sperm-injection-clinical-outcomes
#19
Marziyeh Tavalaee, Abbas Kiani-Esfahani, Mohammad Hossein Nasr-Esfahani
OBJECTIVE: The present study aimed to simultaneously evaluate the association between expression of three potential factors [post-acrosomal sheath WW domain-binding protein (PAWP), phospholipase Cζ (PLCζ), and truncated form of the kit receptor (TR-KIT)] as candidates of oocyte activation with fertilization rate and early embryonic development. MATERIALS AND METHODS: In this experimental study, semen samples were collected from 35 intra-cytoplasmic sperm injection (ICSI) candidates and analyzed according to World Health Organization criteria (2010)...
2017: Cell Journal
https://www.readbyqxmd.com/read/28042535/effects-of-mono-2-ethylhexyl-phthalate-and-di-2-ethylhexyl-phthalate-administrations-on-oocyte-meiotic-maturation-apoptosis-and-gene-quantification-in-mouse-model
#20
Forouzan Absalan, Sadegh Saremy, Esrafil Mansori, Mahin Taheri Moghadam, Ali Reza Eftekhari Moghadam, Razie Ghanavati
OBJECTIVE: Phthalates, which are commonly used to render plastics into soft and flexible materials, have also been determined as developmental and reproductive toxicants in human and animals. The purpose of this study was to evaluate the effect of mono-(2- ethylhexyl) phthalate (MEHP) and di-(2-ethylhexyl) phthalate (DEHP) oral administrations on maturation of mouse oocytes, apoptosis and gene transcription levels. MATERIALS AND METHODS: In this experimental study, immature oocytes recovered from Naval Medical Research Institute (NMRI) mouse strain (6-8 weeks), were divided into seven different experimental and control groups...
2017: Cell Journal
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