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https://www.readbyqxmd.com/read/29162325/scriptaid-improves-the-reprogramming-of-donor-cells-and-enhances-canine-porcine-interspecies-embryo-development
#1
Jin-Gu No, Tai-Young Hur, Minghui Zhao, Seunghoon Lee, Mi-Kyung Choi, Yoon-Seok Nam, Dong-Hyun Yeom, Gi-Sun Im, Dong-Hoon Kim
Histone methylation, histone acetylation, and DNA methylation are the important factors for somatic cell nuclear transfer (SCNT). Histone deacetylase inhibitors (HDACi) and DNA methyltransferase inhibitors (DNMTi) have been used to improve cloning efficiency. In particular, scriptaid, an HDACi, has been shown to improve SCNT efficiency. However, no studies have been performed on canines. Here, we evaluated the effects of scriptaid on histone modification in canine ear fibroblasts (cEFs) and cloned canine embryos derived from cEFs...
November 18, 2017: Reproductive Biology
https://www.readbyqxmd.com/read/29158200/effects-of-diesel-exhaust-derived-secondary-organic-aerosol-soa-on-oocytes-potential-risks-to-meiotic-maturation
#2
Osamu Udagawa, Akiko Furuyama, Koji Imai, Yuji Fujitani, Seishiro Hirano
Particulate air pollution (PM 2.5) is a worldwide concern. Growing epidemiological evidence has shown pathophysiological effects of PM 2.5,not only on cardiovascular system but also on reproductive performance. The composition and physicochemical properties of PM 2.5 vary depending on the emission sources, climate conditions, and complex chemical reactions in the air. These factors make it difficult to understand the cause and mechanistic details of the adverse health effects of PM 2.5. Here, we show potential impacts of PM 2...
November 17, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/29154873/medaka-igf1-identifies-somatic-cells-and-meiotic-germ-cells-of-both-sexes
#3
Cancan Yuan, Kerang Chen, Yefei Zhu, Yongming Yuan, Mingyou Li
Insulin-like growth factors (IGFs) play significant roles in regulating cell proliferation, differentiation and reproduction in diverse organisms. Here, we report the identification of medaka igf1 and the expression pattern of igf1 RNA in adult medaka gonads. Using RT-PCR, igf1 RNA was easily detected in several somatic organs and adult gonads of both sexes. Using chromogenic in situ hybridization, igf1 RNA in the ovary was found in stage I-IV oocytes and in the somatic cells throughout oogenesis. In the testis, igf1 RNA was present in meiotic products and the somatic cells surrounding male germ cells throughout spermatogenesis...
November 14, 2017: Gene
https://www.readbyqxmd.com/read/29154179/the-effect-of-follicullar-fluid-pesticides-and-polychlorinated-biphenyls-concentrations-on-intracytoplasmic-sperm-injection-icsi-embryological-and-clinical-outcome
#4
Tarek K Al-Hussaini, Ahmed A Abdelaleem, Ihab Elnashar, Omar M Shabaan, Rashad Mostafa, Mona A H El-Baz, Sahar E M El-Deek, Tarek A Farghaly
OBJECTIVES: The present study evaluated the correlation between the concentrations of polychlorinated biphenyls (PCBs) and pesticides in the follicular fluid (FF) obtained during intracytoplasmic sperm injection (ICSI) with the ovarian response, endometrial thickness, and embryological and clinical outcomes. DESIGN: Cross-sectional observational study. MATERIALS AND METHODS: Women aged 20 to 38 years (300 infertile couples) presenting to a university-affiliated fertility center were approached to participate in the study...
November 15, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29151891/the-exon-junction-complex-factor-y14-is-dynamic-in-the-nucleus-of-the-beetle-tribolium-castaneum-during-late-oogenesis
#5
Artem M Kiselev, Irina S Stepanova, Leonid S Adonin, Florina M Batalova, Vladimir N Parfenov, Dmitry S Bogolyubov, Olga I Podgornaya
Background: The oocyte chromosomes of the red flour beetle, Tribolium castaneum, are gathered into a knot, forming a karyosphere at the diplotene stage of meiotic prophase. Chromatin rearrangement, which is a characteristic feature of oocyte maturation, is well documented. The T. castaneum karyosphere is surrounded by a complex extrachromosomal structure termed the karyosphere capsule. The capsule contains the vast majority of oocyte RNA. We have previously shown using a BrUTP assay that oocyte chromosomes in T...
2017: Molecular Cytogenetics
https://www.readbyqxmd.com/read/29151403/mouse-oocytes-nucleoli-rescue-embryonic-development-of-porcine-enucleolated-oocytes
#6
Martin Morovic, Frantisek Strejcek, Shoma Nakagawa, Rahul S Deshmukh, Matej Murin, Michal Benc, Helena Fulka, Hirohisa Kyogoku, Lazo Pendovski, Josef Fulka, Jozef Laurincik
It is well known that nucleoli of fully grown mammalian oocytes are indispensable for embryonic development. Therefore, the embryos originated from previously enucleolated (ENL) oocytes undergo only one or two cleavages and then their development ceases. In our study the interspecies (mouse/pig) nucleolus transferred embryos (NuTE) were produced and their embryonic development was analyzed by autoradiography, transmission electron microscopy (TEM) and immunofluorescence (C23 and upstream binding factor (UBF))...
November 20, 2017: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/29150244/proteomic-analysis-of-follicular-fluid-from-tropically-adapted-goats
#7
Alexandre R Paula Junior, Mauricio F van Tilburg, Marina D P Lobo, Ana C O Monteiro-Moreira, Renato A Moreira, Carlos H S Melo, Joanna M G Souza-Fabjan, Airton A Araújo, Luciana M Melo, Dárcio I A Teixeira, Arlindo A Moura, Vicente J F Freitas
The present study was conducted to characterize the major proteome of ovarian follicular fluid from locally-adapted, "Canindé" goats in the northeast of Brazil. Eight estrous cycling goats received a hormonal treatment consisting of medroxyprogesterone acetate, D-cloprostenol and FSH. Fluid was collected by laparoscopy from small (<3mm), medium (3-4mm) and large (>4mm) follicles and then, proteins were analyzed by 2-D SDS-PAGE and tandem mass spectrometry. Thirty-six proteins were identified in the goat follicular fluid, including albumin, immunoglobulins, ceruloplasmin, complement factor B, alpha-1B-glycoprotein precursor, serotransferrin, complement C3 and serpins, among others...
November 6, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/29149414/role-of-tctp-for-cellular-differentiation-and-cancer-therapy
#8
Ean-Jeong Seo, Nicolas Fischer, Thomas Efferth
The translationally controlled tumor protein (TCTP) is a highly conserved protein that is regulated due to a high number of extracellular stimuli. TCTP has an important role for cell cycle and normal development. On the other side, tumor reversion and malignant transformation have been associated with TCTP. TCTP has been found among the 12 genes that are differentially expressed during mouse oocyte maturation, and an overexpression of this gene was reported in a wide variety of different cancer types. Its antiapoptotic effect is indicated by the interaction with several proapoptotic proteins of the Bcl-2 family and the p53 tumor suppressor protein...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29147461/the-role-of-antioxidant-enzymes-in-the-ovaries
#9
REVIEW
Shan Wang, Guolin He, Meng Chen, Tao Zuo, Wenming Xu, Xinghui Liu
Proper physiological function of the ovaries is very important for the entire female reproductive system and overall health. Reactive oxygen species (ROS) are generated as by-products during ovarian physiological metabolism, and antioxidants are indicated as factors that can maintain the balance between ROS production and clearance. A disturbance in this balance can induce pathological consequences in oocyte maturation, ovulation, fertilization, implantation, and embryo development, which can ultimately influence pregnancy outcomes...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29145852/a-preliminary-evaluation-of-influence-of-body-mass-index-on-in-vitro-fertilization-outcome-in-non-obese-endometriosis-patients
#10
Eliana Garalejic, Biljana Arsic, Jovana Radakovic, Dragana Bojovic Jovic, Dragana Lekic, Biljana Macanovic, Ivan Soldatovic, Milan Perovic
BACKGROUND/AIMS: Obese and overweight women experience a lower probability for pregnancy after IVF. However, despite the increasing prevalence of obesity, the large majority of infertile women are non-obese. One of the most common indications for IVF is endometriosis. Thought-provoking inverse correlation has been established between BMI and endometriosis. Lower BMI is a risk factor for development of endometriosis and a predictive factor for severe endometriosis. Since severe endometriosis carries lower reproductive chances, even after IVF, we preliminary tested a hypothesis that higher BMI among non-obese endometriosis patients improves IVF outcomes...
November 16, 2017: BMC Women's Health
https://www.readbyqxmd.com/read/29145825/assembling-large-genomes-analysis-of-the-stick-insect-clitarchus-hookeri-genome-reveals-a-high-repeat-content-and-sex-biased-genes-associated-with-reproduction
#11
Chen Wu, Victoria G Twort, Ross N Crowhurst, Richard D Newcomb, Thomas R Buckley
BACKGROUND: Stick insects (Phasmatodea) have a high incidence of parthenogenesis and other alternative reproductive strategies, yet the genetic basis of reproduction is poorly understood. Phasmatodea includes nearly 3000 species, yet only the genome of Timema cristinae has been published to date. Clitarchus hookeri is a geographical parthenogenetic stick insect distributed across New Zealand. Sexual reproduction dominates in northern habitats but is replaced by parthenogenesis in the south...
November 16, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29145719/maintained-mpf-level-after-oocyte-vitrification-improves-embryonic-development-after-ivf-but-not-after-somatic-cell-nuclear-transfer
#12
Ji I Baek, Dong-Won Seol, Ah-Reum Lee, Woo Sik Lee, Sook-Young Yoon, Dong Ryul Lee
Levels of maturation-promoting factor (MPF) in oocytes decline after vitrification, and this decline has been suggested as one of the main causes of low developmental competence resulting from cryoinjury. Here, we evaluated MPF activity in vitrified mouse eggs following treatment with caffeine, a known stimulator of MPF activity, and/or the proteasome inhibitor MG132. Collected MII oocytes were vitrified and divided into four groups: untreated, 10 mM caffeine (CA), 10 μM MG132 (MG), and 10 mM caffeine +10 μM MG132 (CA+MG)...
November 16, 2017: Molecules and Cells
https://www.readbyqxmd.com/read/29143991/genetic-and-non-genetic-risk-factors-for-pre-eclampsia-an-umbrella-review-of-systematic-reviews-and-meta-analyses-of-observational-studies
#13
REVIEW
Konstantinos Giannakou, Evangelos Evangelou, Stefania I Papatheodorou
OBJECTIVE: To summarize evidence from the literature on the risk factors associated with preeclampsia, assess the presence of statistical biases and identify associations with robust evidence. METHODS: We searched PubMed and ISI Web of Science from inception to October, 2016, to identify systematic reviews and meta-analyses of observational studies examining associations between genetic and non-genetic risk factors for preeclampsia. For each meta-analysis we estimated the summary effect size by random-effects and fixed-effects models, the 95% confidence interval and the 95% prediction interval...
November 16, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29142448/expression-of-the-bone-morphogenetic-protein-2-bmp2-in-the-human-cumulus-cells-as-a-biomarker-of-oocytes-and-embryo-quality
#14
Sirin B Demiray, Ozlem Yilmaz, Ege N T Goker, Erol Tavmergen, Nilufer Calimlioglu, Ugur Sezerman, Huseyin O Soykam, Gulperi Oktem
Background: The members of the transforming growth factor-B superfamily, as the bone morphogenetic proteins (BMPs) subfamily and anti-Müllerian hormone (AMH), play a role during follicular development, and the bone morphogenetic protein-2 (BMP2), AMH, and THY1 are expressed in ovaries. Aim: This study was designed to define whether or not the expressions of these proteins in human cumulus cells (CCs) can be used as predictors of the oocyte and embryo competence...
July 2017: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/29141509/relative-morphokinetics-assessed-by-time-lapse-imaging-are-altered-in-embryos-from-patients-with-endometriosis
#15
Alexander Freis, Jens Erik Dietrich, Moritz Binder, Verena Holschbach, Thomas Strowitzki, Ariane Germeyer
INTRODUCTION: Time-lapse technology allows almost continuous noninvasive assessment of embryonic development. It was shown previously that relative kinetics defining cleavage synchronicity are better predictors of blastocyst quality than absolute time points. This study aims to compare relative kinetics in embryos from patients with and without endometriosis. METHODS: Time-lapse data were collected retrospectively from 596 patients undergoing infertility treatment for in vitro fertilization from January 2011 to July 2016...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/29135280/factors-affecting-mouse-somatic-cell-nuclear-reprogramming-by-rabbit-ooplasms
#16
Xia Huang, Lili Song, Zhiyan Zhan, Haihui Gu, Haizhong Feng, Yanxin Li
Successful development of interspecies somatic cell nuclear transfer (iSCNT) embryos depends on compatibilities between ooplasmic and nuclear components. However, the mechanisms by which the compatibilities are regulated are still unknown. In this study, using mouse Oct4-green fluorescent protein (GFP) cells as donors and rabbit oocytes as recipients, we show that Oct4 and other pluripotency related genes were reactivated in some of mouse-rabbit iSCNT embryos, which could also activate Oct4 promoter-driven GFP reporter gene expression...
November 14, 2017: Cellular Reprogramming
https://www.readbyqxmd.com/read/29134715/relationship-between-follicular-volume-and-oocyte-competence-blastocyst-development-and-live-birth-rate-optimal-follicle-size-for-oocyte-retrieval
#17
Barbara Wirleitner, Jasmin Okhowat, Lucie Vištejnová, Milena Králíčková, Marie Karlíková, Pierre Vanderzwalmen, Fabien Ectors, Libor Hradecký, Maximilian Schuff, Maximilian Murtinger
OBJECTIVES: To analyse the oocyte competence in GnRHa stimulation cycles with regard to maturity, fertilization and blastocyst rate and clinical outcome (pregnancy and live birth rate) in correlation to follicular volume measured by 3D sonography and follicular fluid composition. METHODS: This was a prospective single-centre study conducted in the period June 2012 - June 2014 including 118 ovum pick-ups (OPUs) with subsequent embryo transfers (ET). Out of 1,493 aspirated follicles we analysed 1,236 follicles and traced oocytes grouped according to follicular volume...
November 14, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29134695/acute-stimulation-of-a-smooth-muscle-constrictor-by-oestradiol-17%C3%AE-via-gper1-in-bovine-oviducts
#18
T Nishie, Y Kobayashi, K Kimura, K Okuda
Oviducts play roles in reproductive processes, including gametes transport, fertilization and early embryo development. Oviductal transport is controlled by various factors such as endothelins (EDNs) and nitric oxide (NO), smooth muscle contracting and relaxing factor, respectively. EDNs and NO production depend on an ovarian steroid hormone, oestradiol-17β (E2) and E2 quickly exerts their biological functions through G protein-coupled oestrogen receptor 1 (GPER1), which mediates rapid intracellular signalling...
November 14, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29134682/differential-effects-of-follistatin-on-porcine-oocyte-competence-and-cumulus-cell-gene-expression-in-vitro
#19
Z Guo, M S Islam, D Liu, G Liu, L Lv, Y Yang, B Fu, L Wang, Z Liu, H He, H Wu
Several oocyte-derived genes/proteins are essential to early embryonic development. The expression and stability of these proteins are influenced by the autocrine/paracrine activity of factors released by oocytes and cumulus cells. This study investigated the paracrine and autocrine activity of follistatin (FS), which is secreted by oocytes and cumulus cells as part of porcine embryogenesis. Immunohistochemical (IHC) localization of follistatin was conducted on 100 randomly selected early- and late-cleaving two-cell embryos...
November 14, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29132039/the-cxcl12-cxcr4-signaling-promotes-oocyte-maturation-by-regulating-cumulus-expansion-in-sheep
#20
Rui-Na Zhang, Bo Pang, Shang-Rong Xu, Peng-Cheng Wan, Song-Chang Guo, Han-Zhong Ji, Gong-Xue Jia, Lin-Yong Hu, Xin-Quan Zhao, Qi-En Yang
Gonadotropins and growth factors synergistically regulate folliculogenesis and oocyte development. C-X-C motif chemokine 12 (CXCL12) and its receptor CXCR4 are expressed in ovaries of sheep, cattle and other species, however, roles of this multifunctional signal axis in oocyte maturation are not defined. Using sheep as a model, we examined the expression patterns and functions of the CXCL12-CXCR4 axis during oocyte maturation. CXCL12 and CXCR4 mRNA and protein were present in oocytes and granulosa cells. Relative abundance of CXCR4 transcript was controlled by epidermal growth factor (EGF)...
November 4, 2017: Theriogenology
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