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https://www.readbyqxmd.com/read/29331495/role-of-bcl2l10-in-regulating-buffalo-bubalus-bubalis-oocyte-maturation
#1
Yu-Lin Huang, Huan-Jing Wang, Fu-Mei Chen, Xiu-Ling Zhao, Qiang Fu, Peng-Fei Zhang, Li-Ping Pu, Feng-Ling Huang, Yang-Qing Lu, Ming Zhang
It has been reported that BCL2L10 is abundantly and specifically expressed in adult human and mouse oocytes and played a very important role in oocytes maturation and early embryonic development. This study is to investigate the expression pattern of BCL2L10 in buffalo ovaries and its effect on the in vitro maturation of buffalo oocytes, so as to dissect mechanism of oocytes maturation and provide theoretical guidance for improvement of the in vitro maturation of buffalo oocytes. The results showed that BCL2L10 gene was enriched in ovary and the expression of BCL2L10 was oocyte specific and up-regulated during oocyte maturation...
December 30, 2017: Theriogenology
https://www.readbyqxmd.com/read/29331483/gata4-is-a-transcriptional-regulator-of-r-spondin1-in-japanese-flounder-paralichthys-olivaceus
#2
Xiumei Liu, Zan Li, Bo Wang, He Zhu, Yuezhong Liu, Jie Qi, Quanqi Zhang
GATA4 is a well-known transcription factor of the GATA family implicated in regulation of sex determination and gonadal development in mammals. In this study, we cloned the full-length cDNA of Paralichthys olivaceus gata4 (Po-gata4). Phylogenetic, gene structure, and synteny analysis showed that Po-GATA4 is homologous to GATA4 of teleost and tetrapod. Po-gata4 transcripts were detected in Sertoli cells, spermatogonia, oogonia and oocytes, with higher transcript levels overall in the testis than the ovary. The promoter region of P...
January 10, 2018: Gene
https://www.readbyqxmd.com/read/29330967/the-impact-of-bisphenol-s-on-bovine-granulosa-and-theca-cells
#3
K A Campen, M Lavallee, Cmh Combelles
Bisphenol S (BPS) is an endocrine-disrupting chemical with multiple potential mechanisms of action, including as an oestrogen receptor agonist. BPS is increasingly used in plastics and thermal receipts as a substitute for bisphenol A, which has been phased out due to concerns about human health implications. The ability of BPS to alter female reproductive function in mammals has not been widely studied, despite the importance of normal hormone signalling for female reproduction. The aim of this study was to investigate how BPS (in a wide range of doses, including very low doses) affects granulosa cell and theca cell steroid hormone production and cell viability in the bovine...
January 12, 2018: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29329390/human-oocyte-calcium-analysis-predicts-the-response-to-assisted-oocyte-activation-in-patients-experiencing-fertilization-failure-after-icsi
#4
M Ferrer-Buitrago, L Dhaenens, Y Lu, D Bonte, F Vanden Meerschaut, P De Sutter, L Leybaert, B Heindryckx
STUDY QUESTION: Can human oocyte calcium analysis predict fertilization success after assisted oocyte activation (AOA) in patients experiencing fertilization failure after ICSI? SUMMARY ANSWER: ICSI-AOA restores the fertilization rate only in patients displaying abnormal Ca2+ oscillations during human oocyte activation. WHAT IS KNOWN ALREADY: Patients capable of activating mouse oocytes and who showed abnormal Ca2+ profiles after mouse oocyte Ca2+ analysis (M-OCA), have variable responses to ICSI-AOA...
January 10, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29325603/culture-conditions-affect-ca2-release-in-artificially-activated-mouse-and-human-oocytes
#5
Yuechao Lu, Davina Bonte, Minerva Ferrer-Buitrago, Mina Popovic, Jitesh Neupane, Margot Van der Jeught, Luc Leybaert, Petra De Sutter, Björn Heindryckx
Inconsistent fertilisation and pregnancy rates have been reported by different laboratories after application of ionomycin as a clinical method of assisted oocyte activation (AOA) to overcome fertilisation failure. Using both mouse and human oocytes, in the present study we investigated the effects of ionomycin and Ca2+ concentrations on the pattern of Ca2+ release and embryonic developmental potential. In the mouse, application of 5μM ionomycin in potassium simplex optimisation medium (KSOM) or 10µM ionomycin in Ca2+-free KSOM significantly reduced the Ca2+ flux and resulted in failure of blastocyst formation compared with 10μM ionomycin in KSOM...
January 12, 2018: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/29324379/associating-ambient-exposure-to-fine-particles-and-human-fertility-rates-in-china
#6
Tao Xue, Qiang Zhang
BACKGROUND: Adverse effects of ambient fine particles (PM2.5) on sperm quality and oocyte fertilization have been identified by previous research. However, insufficient human studies tested associations between PM2.5 and decreased fertility rates. METHODS: We associated long-term exposure to PM2.5 and county-level fertility rates reported by 2010 census across China. Exposure assessments were based on PM2.5 maps (2009-2010) with a spatial resolution of 0.1° derived from satellite remote sensing data from another published study...
January 8, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29318868/embryo-development-until-blastocyst-stage-with-and-without-renewal-of-single-medium-on-day-3
#7
Fernando Peña, Rocío Dávalos, Adolfo Rechkemmer, Alvaro Ascenzo, Mauricio Gonzales
OBJECTIVE: This study aimed to assess the effects of using a single culture medium not renewed on day 3 on the development of the embryo up to the blastocyst stage. METHODS: The study was carried out in the Assisted Reproduction Laboratory of Clínica Miraflores in the period ranging from April to December of 2016. The study included 589 human embryos obtained from 82 couples submitted to IVF/ICSI with donor oocytes. The couples were randomly divided into two groups: group 1 (medium renewed on day 3) and group 2 (medium not renewed on day 3)...
January 10, 2018: JBRA Assisted Reproduction
https://www.readbyqxmd.com/read/29318513/targeted-elimination-of-mutant-mitochondrial-dna-in-melas-ipscs-by-mitotalens
#8
Yi Yang, Han Wu, Xiangjin Kang, Yanhui Liang, Ting Lan, Tianjie Li, Tao Tan, Jiangyun Peng, Quanjun Zhang, Geng An, Yali Liu, Qian Yu, Zhenglai Ma, Ying Lian, Boon Seng Soh, Qingfeng Chen, Ping Liu, Yaoyong Chen, Xiaofang Sun, Rong Li, Xiumei Zhen, Ping Liu, Yang Yu, Xiaoping Li, Yong Fan
Mitochondrial diseases are maternally inherited heterogeneous disorders that are primarily caused by mitochondrial DNA (mtDNA) mutations. Depending on the ratio of mutant to wild-type mtDNA, known as heteroplasmy, mitochondrial defects can result in a wide spectrum of clinical manifestations. Mitochondria-targeted endonucleases provide an alternative avenue for treating mitochondrial disorders via targeted destruction of the mutant mtDNA and induction of heteroplasmic shifting. Here, we generated mitochondrial disease patient-specific induced pluripotent stem cells (MiPSCs) that harbored a high proportion of m...
January 9, 2018: Protein & Cell
https://www.readbyqxmd.com/read/29315724/human-sperm-handling-in-intracytoplasmic-sperm-injection-processes-in-vitro-studies-on-mouse-oocyte-activation-embryo-development-competence-and-sperm-oxidation-reduction-potential
#9
S Roychoudhury, I Maldonado-Rosas, A Agarwal, S C Esteves, R Henkel, R Sharma
Polyvinylpyrrolidone (PVP) and hyaluronic acid (HA) are routinely used in handling spermatozoa for intracytoplasmic sperm injection (ICSI). As there are still concerns about possible adverse effects on the embryo, this study investigated sperm handling in a mouse ICSI model to (i) evaluate oocyte activation after injection of spermatozoa selected for rotational or linear motion in PVP; (ii) assess the effect of sperm selection in PVP, HA and medium on oocyte activation; (iii) examine the effects of PVP and HA on parthenogenetic oocyte activation and embryo development; and (iv) assess the oxidation-reduction potential (ORP) of spermatozoa exposed to PVP, HA or medium...
January 9, 2018: Andrologia
https://www.readbyqxmd.com/read/29311484/molecular-determinants-of-%C3%AE-3%C3%AE-4-nicotinic-acetylcholine-receptors-inhibition-by-triterpenoids
#10
Sanung Eom, Yoon Suh Kim, Sung Bae Lee, Shinhwa Noh, Hye Duck Yeom, Hyunsu Bae, Jun-Ho Lee
In a previous work, we reported the regulatory role of the triterpenoids on 5-hydroxytryptamine (5-HT)3A receptors activity in Xenopus laevis oocytes (Eur. J. Pharmacol., 615, 2009, Lee et al.). In the present report, we studied the modulation of triterpenoids on the activity of the human nicotinic acetylcholine receptor type α3β4. Two-electrode voltage clamp experiments were used to test acetylcholine mediated inward current (IACh). Treatment with triterpenoids (dehydroeburicoic acid, 6α-hydroxypolyporenic acid C and pachymic acid) inhibited IACh in a concentration dependent and reversible manner...
2018: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29307115/bioinformatic-analyses-of-zona-pellucida-genes-in-vertebrates-and-their-expression-in-nile-tilapia
#11
Tianli Wu, Yunying Cheng, Zhilong Liu, Wenjing Tao, Shuqing Zheng, Deshou Wang
Zona pellucida (ZP) genes encode ZP glycoproteins which constitute the coat surrounding oocytes and early embryos. Genome-wide identification of ZP genes is still lacking in vertebrates, especially in fish species. Herein, we conducted bioinformatic analyses of the ZP genes of the Nile tilapia and other vertebrates. Totally 16, 9, 17, 27, 21, 20, 26, 19, 14,11, 24, 17, 9, 18, 8, 11, 9, 8, 5, and 4 ZP genes belonging to 5 subfamilies (ZPA, ZPB, ZPC, ZPD, and ZPAX) were found in the sea lamprey, elephant shark, coelacanth, spotted gar, zebrafish, medaka, stickleback, Nile tilapia, Amazon molly, platyfish, seahorse, Northern snakehead, cavefish, tetraodon, clawed frog, turtle, chicken, platypus, kangaroo rat, and human genomes, respectively...
January 6, 2018: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/29305586/efficient-generation-of-functional-haploid-spermatids-from-human-germline-stem-cells-by-three-dimensional-induced-system
#12
Min Sun, Qingqing Yuan, Minghui Niu, Hong Wang, Liping Wen, Chencheng Yao, Jingmei Hou, Zheng Chen, Hongyong Fu, Fan Zhou, Chong Li, Shaorong Gao, Wei-Qiang Gao, Zheng Li, Zuping He
Generation of functional spermatids from human spermatogonial stem cells (SSCs) in vitro is of utmost importance for uncovering mechanisms underlying human germ cell development and treating infertility. Here we report a three-dimensional-induced (3D-I) system by which human SSCs were efficiently differentiated into functional haploid spermatids. Human SSCs were isolated and identified phenotypically. Meiotic chromatin spreads and DNA content assays revealed that spermatocytes and haploid cells were effectively generated from human SSCs by 3D-I system...
January 5, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29304224/in-vitro-differentiation-of-human-oocyte-like-cells-from-oogonial-stem-cells-single-cell-isolation-and-molecular-characterization
#13
Erica Silvestris, Paola Cafforio, Stella D'Oronzo, Claudia Felici, Franco Silvestris, Giuseppe Loverro
STUDY QUESTION: Are the large cells derived from cultured DEAD box polypeptide 4 (DDX4)-positive oogonial stem cells (OSCs), isolated from the ovarian cortex of non-menopausal and menopausal women, oocyte-like cells? SUMMARY ANSWER: Under appropriate culture conditions, DDX4-positive OSCs from non-menopausal and menopausal women differentiate into large haploid oocyte-like cells expressing the major oocyte markers growth differentiation factor 9 (GDF-9) and synaptonemal complex protein 3 (SYCP3) and then enter meiosis...
January 3, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29299873/single-cell-expression-profiling-and-proteomics-of-primordial-germ-cells-spermatogonial-stem-cells-adult-germ-stem-cells-and-oocytes
#14
Sabine Conrad, Hossein Azizi, Thomas Skutella
The mammalian germ cells, cell assemblies, tissues, and organs during development and maturation have been extensively studied at the tissue level. However, to investigate and understand the fundamental insights at the molecular basis of germ and stem cells, their cell fate plasticity, and determination, it is of most importance to analyze at the large scale on the single-cell level through different biological windows. Here, modern molecular techniques optimized for single-cell analysis, including single fluorescence-activated cell sorting (FACS) and single-cell RNA sequencing (scRNA-seq) or microfluidic high-throughput quantitative real-time polymerase chain reaction (qRT-PCR) for single-cell gene expression and liquid chromatography coupled to tandem mass spectrometry (LC-MSMS) for protein profiling, have been established and are still getting optimized...
January 4, 2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29298350/sialic-acid-binding-lectin-from-bullfrog-eggs-inhibits-human-malignant-mesothelioma-cell-growth-in-vitro-and-in-vivo
#15
Takeo Tatsuta, Toshiyuki Satoh, Shigeki Sugawara, Akiyoshi Hara, Masahiro Hosono
Malignant mesothelioma is an aggressive cancer that results from exposure to asbestos. The therapeutic options for this type of cancer are limited; therefore, the development of novel therapeutic agents is urgently required. Sialic acid-binding lectin isolated from Rana catesbeiana oocytes (cSBL) is a novel therapeutic candidate for cancer, which exhibits antitumor activity mediated through RNA degradation. In the present study, we evaluated the effect of cSBL in vitro and in vivo. Xenograft-competent H2452 and MSTO human mesothelioma cell lines were treated with cSBL, and the pathway by which cSBL induces apoptosis was analyzed...
2018: PloS One
https://www.readbyqxmd.com/read/29297113/frozen-blastocyst-transfer-outcomes-in-immediate-versus-delayed-subsequent-cycles-following-gnrh-agonist-or-hcg-triggers
#16
Leah Kaye, Audrey Marsidi, Puja Rai, Jeffrey Thorne, John Nulsen, Lawrence Engmann, Claudio Benadiva
PURPOSE: The aim of this study is to analyze clinical pregnancy rates (CPR) and ongoing pregnancy rates (OPR) for frozen embryo transfers (FET) performed with blastocysts in the cycle immediately after GnRH agonist (GnRHa) versus human chorionic gonadotropin (hCG) triggers, with outcomes of delayed FET for comparison. METHODS: Retrospective cohort study at a university-affiliated in vitro fertilization (IVF) clinic, including patients undergoing IVF between 2013-16 with a blastocyst FET performed within two menstrual cycles of a previous stimulation cycle and vaginal oocyte retrieval (VOR)...
January 3, 2018: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29295897/administration-of-gonadotropins-for-superovulation-in-mice
#17
Richard Behringer, Marina Gertsenstein, Kristina Vintersten Nagy, Andras Nagy
For experiments that require large numbers of preimplantation mouse embryos, such as microinjection of zygotes, gonadotropins are administered to females before mating to increase the number of oocytes that are ovulated (i.e., to induce superovulation). Pregnant mare serum gonadotropin (PMSG) is used to mimic the oocyte maturation effect of the endogenous follicle-stimulating hormone (FSH), and human chorionic gonadotropin (hCG) is used to mimic the ovulation induction effect of luteinizing hormone (LH).
January 2, 2018: Cold Spring Harbor Protocols
https://www.readbyqxmd.com/read/29286418/using-fluorescence-in-situ-hybridization-fish-to-monitor-the-state-of-arm-cohesion-in-prometaphase-and-metaphase-i-drosophila-oocytes
#18
Adrienne T Perkins, Sharon E Bickel
In humans, chromosome segregation errors in oocytes are responsible for the majority of miscarriages and birth defects. Moreover, as women age, their risk of conceiving an aneuploid fetus increases dramatically and this phenomenon is known as the maternal age effect. One requirement for accurate chromosome segregation during the meiotic divisions is maintenance of sister chromatid cohesion during the extended prophase period that oocytes experience. Cytological evidence in both humans and model organisms suggests that meiotic cohesion deteriorates during the aging process...
December 6, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29280527/the-effects-of-superovulation-and-reproductive-aging-on-the-epigenome-of-the-oocyte-and-embryo
#19
REVIEW
Kira Lynn Marshall, Rocío Melissa Rivera
A societal preference of delaying maternal age at first childbirth has increased reliance on assisted reproductive technologies/therapies (ART) to conceive a child. Oocytes that have undergone physiologic aging (≥35 years for humans) are now commonly used for ART, yet evidence is building that suboptimal reproductive environments associated with aging negatively affect oocyte competence and embryo development - although the mechanisms underlying these relationship are not yet well understood. Epigenetic programming of the oocyte occurs during its growth within a follicle, so the ovarian stimulation protocols that administer exogenous hormones, as part of the first step for all ART procedures, may prevent the gamete from establishing an appropriate epigenetic state...
December 27, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/29277899/proton-independent-activation-of-acid-sensing-ion-channel-asic3-by-alkaloid-lindoldhamine-from-laurus-nobilis
#20
Dmitry I Osmakov, Sergey G Koshelev, Yaroslav A Andreev, Maxim A Dubinnyi, Vadim S Kublitski, Roman G Efremov, Alexander I Sobolevsky, Sergey A Kozlov
BACKGROUND AND PURPOSE: Acid-sensing ion channels (ASICs) play an important role in synaptic plasticity and learning, as well as in nociception and mechanosensation. ASICs are implicated in pain, neurological and psychiatric diseases but their therapeutic potential is limited by lack of ligands activating them at physiological pH. EXPERIMENTAL APPROACH: Here we report extraction from laurel leaves, purification and structure determination of a bisbenzylisoquinoline alkaloid lindoldhamine (LIN) and characterization of its effect on ASIC3 channels using two-electrode voltage-clamp electrophysiological recordings from Xenopus laevis oocytes...
December 26, 2017: British Journal of Pharmacology
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