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https://www.readbyqxmd.com/read/27910733/a-comparative-morphologic-and-morphometric-study-about-geniculate-ganglion-development-in-man-and-in-rat
#1
Ana Sánchez-Del-Rey, José Maria Sánchez-Fernández, Arantza Ibargutxi, Agustin Martinez-Ibargüen, Francisco Santaolalla
CONCLUSIONS: Human-rat geniculate ganglion (GG) have multiple origins: (1) An initial proximity (20 μm) to the endocranial foramen of the IAM, suggests neural crest induction; and (2) The influence of epibranchial placodes: the tensor tympani muscle (TTM) and the otic apical coil. OBJECTIVES: This study was undertaken to determine the comparative development of human-rat GG. MATERIALS AND METHODS: A light microscopic study of the GG in human material obtained from spontaneous abortions at 9, 13, 14, 17, 18, and 30 weeks, and one neonate was done...
December 2, 2016: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/27909687/morphogenesis-of-human-embryonic-stem-cells-into-mature-neurons-under-in-vitro-culture-conditions
#2
Geeta Shroff
AIM: To describe the morphogenesis of different neuronal cells from the human embryonic stem cell (hESC) line, SCT-N, under in vitro culture conditions. METHODS: The directed neuronal cell line was produced from a single, spare, pre-implantation stage fertilized ovum that was obtained during a natural in vitro fertilization process. The hESCs were cultured and maintained as per our proprietary in-house technology in a Good Manufacturing Practice, Good Laboratory Practice and Good Tissue Practice compliant laboratory...
November 20, 2016: World Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27907016/direct-unequal-cleavages-embryo-developmental-competence-genetic-constitution-and-clinical-outcome
#3
Qiansheng Zhan, Zhen Ye, Robert Clarke, Zev Rosenwaks, Nikica Zaninovic
OBJECTIVE: To investigate the prevalence, developmental potential, chromosomal constitution and clinical outcome of embryos with direct unequal cleavages (DUC). DESIGN: A retrospective observational study. SETTING: Academic Institution. PARTICIPANT: 21,261 embryos from 3,155 cycles cultured in EmbryoScope®. RESULTS: The total incidence of DUCs per embryo occupying the first three cleavages were 26...
2016: PloS One
https://www.readbyqxmd.com/read/27905152/the-effect-of-cumulus-cells-on-domestic-cat-felis-catus-oocytes-during-in-vitro-maturation-and-fertilization
#4
N Sowińska, K Frankowska, A Filipczyk, A Adamaszek, K Nalik, K Fic, A Pietsch-Fulbiszewska
The aim of this study was to evaluate the effect of co-culture of denuded oocytes with cumulus cells (CC) or cumulus-oocyte complexes (COCs) on in vitro maturation (IVM) and in vitro fertilization (IVF). Immature oocytes were collected from ovaries of domestic cats following a routine ovariectomy. Oocytes were matured in vitro for 24 hr within four groups: (i) denuded oocytes (DO), (ii) DO co-cultured with CC, (iii) DO co-cultured with COC and (iv) COC as a control group. In further experiments, COCs were matured in vitro for 24 hr, and then, oocytes were randomly divided into four groups as previously described and fertilized in vitro...
November 30, 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27903344/-a-control-study-of-artificial-oocyte-activation-in-the-same-period
#5
D Y Hao, R Zhang, X Zhang, C Y Shen, Y Yang, W B Wu, Y L Liu, J Liu, J R Zhang, X L Wang
Objective: To compare the fertility rate and embryo outcome between normal fertilization and the use of Calcium ionophore A23187 on the same period of the same cycle of human ovum for artificial activation. Methods: Patients who conducted the intracytoplasmic sperm injection (ICSI) cycle in vitro fertilization assisted reproductive from January 2015 to December in reproductive center of the Third Affiliated Hospital of Zhengzhou University were enrolled.The protocol of this study was approved by the ethics committee of The Third Affiliated Hospital of Zhengzhou University...
November 22, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27901279/dopamine-agonists-for-preventing-ovarian-hyperstimulation-syndrome
#6
REVIEW
Huilin Tang, Selma Mourad, Suo-Di Zhai, Roger J Hart
BACKGROUND: Ovarian hyperstimulation syndrome (OHSS) is a potentially serious complication of ovarian stimulation in assisted reproduction technology (ART). It is characterised by enlarged ovaries and an acute fluid shift from the intravascular space to the third space, resulting in bloating, increased risk of venous thromboembolism and decreased organ perfusion. Most cases are mild, but forms of moderate or severe OHSS appear in 3% to 8% of in vitro fertilisation (IVF) cycles. The dopamine agonist cabergoline was introduced as a secondary prevention intervention for OHSS in women at high risk of OHSS undergoing ART treatment...
November 30, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27898936/nutrient-transporters-in-bovine-uteroplacental-tissues-on-days-sixteen-to-fifty-of-gestation
#7
M S Crouse, K J McLean, M R Crosswhite, L P Reynolds, C R Dahlen, B W Neville, P P Borowicz, J S Caton
During early gestation, nutrients are transported to the developing embryo via transporters in the uterine endometrium and chorioallantois. In the present study, we examined glucose transporters and and the cationic AA transporters , , and to test the hypotheses that 1) relative mRNA expression of transporters would be different among uteroplacental tissue type as gestation progresses and 2) concentrations of glucose and cationic AA would be different among target sites (placental compartments, serum, and histotrophic) and days of gestation...
November 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27890045/protein-in-culture-and-endogenous-lipid-interact-with-embryonic-stages-in-vitro-to-alter-calf-birthweight-after-embryo-vitrification-and-warming
#8
E Gómez, S Carrocera, S Uzbekova, D Martín, A Murillo, M Alonso-Guervós, F Goyache, M Muñoz
Short-term protein removal in vitro improves long-term blastocyst competence to survive vitrification. We investigated the mechanisms and effects underlying protein removal. Day-6 morulae and early blastocysts were cultured individually with and without protein for 24h. Development and lipid content were analysed in expanded blastocysts derived from morulae (M-XB) and from early blastocysts (EB-XB). Expression of genes involved in lipid metabolism, stress responses and apoptosis was analysed in fresh and vitrified-warmed M-XB produced with and without protein...
November 28, 2016: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/27881083/loss-of-maternal-annexin-a10-via-a-34-kb-deleted-type-copy-number-variation-is-associated-with-embryonic-mortality-in-japanese-black-cattle
#9
Shinji Sasaki, Takayuki Ibi, Takayuki Akiyama, Moriyuki Fukushima, Yoshikazu Sugimoto
BACKGROUND: Conception is a fundamental trait for successful cattle reproduction. However, conception rates in Japanese Black cattle have been gradually declining over the last two decades. Although conception failures are mainly caused by embryonic mortality, the role of maternal genetic factors in the process remains unknown. Copy number variation (CNV), defined as large-scale genomic structural variants, contributes to several genetic disorders. To identify CNV associated with embryonic mortality in Japanese Black cattle, we evaluated embryonic mortality as a categorical trait with a threshold model and conducted a genome-wide CNV association study for embryonic mortality using 791 animals...
November 24, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27877088/aloe-emodin-suppresses-hypoxia-induced-retinal-angiogenesis-via-inhibition-of-hif-1%C3%AE-vegf-pathway
#10
Jianming Wu, Xiao Ke, Wei Wang, Hongcheng Zhang, Na Ma, Wei Fu, Manxi Zhao, Xiaoping Gao, Xiaofeng Hao, Zhirong Zhang
Background: Aloe-emodin (AE) has been reported to possess the antiangiogenic effect on laser induced choroidal neovascularization. AE inhibits the vessel formation in the zebrafish embryos. However, it is still unclear whether AE can alleviate neovascularization. Here, we investigated the inhibitory effect of AE on the hypoxia-induced retinal neovascularization and the possible mechanisms. Methods: We established a vascular endothelial growth factor (VEGF) secretion model under chemical induced hypoxia by exposure of 150 µM CoCl2 to the ARPE-19 cells, then treated the cells with different concentrations of AE (0...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27876920/use-of-chicken-embryonated-eggs-for-evaluating-the-virulence-of-toxoplasma-gondii
#11
A Setasimy, M Namavari
The objective of the present study was to examine the virulence of Toxoplasma gondii RH strain tachyzoites in embryonated eggs after continuous passage in Vero cell line. The first T. gondii tachyzoites was considered low passage (no passage) and then passaged for 80 times on Vero as high passage. Groups of 9-day-old embryonated eggs with ten eggs in each group were inoculated with 10(2),10(3) and 10(4) of low or high-passage T. gondii tachyzoites, and any mortality was recorded. Suitable samples from different tissues (liver, heart, and brain) of the dead embryos were collected for histopathological study...
December 2016: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/27865446/the-use-of-utrogestan-during-controlled-ovarian-hyperstimulation-in-normally-ovulating-women-undergoing-in%C3%A2-vitro-fertilization-or-intracytoplasmic-sperm-injection-treatments-in-combination-with-a-freeze-all-strategy-a-randomized-controlled-dose-finding-study
#12
Xiuxian Zhu, Hongjuan Ye, Yonglun Fu
OBJECTIVE: To compare the clinical characteristics in a Utrogestan and hMG protocol with the use of different doses of Utrogestan in normally ovulating women undergoing in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) treatments. DESIGN: Prospective controlled study. SETTING: Tertiary-care academic medical center. PATIENT(S): A total of 150 infertile patients undergoing IVF/ICSI treatments. INTERVENTION(S): Utrogestan and hMG were administered simultaneously beginning on cycle day 3...
November 16, 2016: Fertility and Sterility
https://www.readbyqxmd.com/read/27865416/embryo-yield-in-dairy-cattle-after-superovulation-with-folltropin-or-pluset
#13
M Mikkola, J Taponen
Two commercial FSH products were compared in a retrospective study on 3990 commercial superovulations and embryo recoveries in dairy heifers and cows. In addition, the 56-day nonreturn rate of 19,400 embryos produced with these two preparations was analyzed. Embryo collections were performed during a 16-year period from donors of Holstein and Ayrshire breeds. Folltropin (Vetoquinol S.A., Lure cedex, France) group (Group F) consisted of 2592 superovulations, of which 80% were performed on heifers and 20% on cows, and Pluset (Laboratorios Calier, S...
January 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/27865408/progesterone-and-ultrasonographic-changes-during-aglepristone-or-cloprosternol-treatment-in-queens-at-21-to-22-or-35-to-38%C3%A2-days-of-pregnancy
#14
M C García Mitacek, M C Bonaura, R G Praderio, R Nuñez Favre, R L de la Sota, M A Stornelli
Progesterone (P4) is a requirement for pregnancy development. Previous reports observed a maximal value of serum P4 concentration on 21 days after the first mating after which it slowly declines throughout the rest of pregnancy. Ultrasound examination should be performed to ensure that pregnancy interruption is complete. Limited information is available on the ultrasonic appearance of conceptuses during pregnancy termination in cats The objective was to study serum P4 concentration and ultrasonographic changes during aglepristone (ALI) or cloprostenol (CLO) treatment and to evaluate the fertility after treatment...
January 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/27865347/gestational-food-restriction-decreases-placental-interleukin-10-expression-and-markers-of-autophagy-and-endoplasmic-reticulum-stress-in-murine-intrauterine-growth-restriction
#15
Alison Chu, Shanthie Thamotharan, Amit Ganguly, Madhuri Wadehra, Matteo Pellegrini, Sherin U Devaskar
Intrauterine growth restriction (IUGR) affects up to 10% of pregnancies and often results in short- and long-term sequelae for offspring. The mechanisms underlying IUGR are poorly understood, but it is known that healthy placentation is essential for nutrient provision to fuel fetal growth, and is regulated by immunologic inputs. We hypothesized that in pregnancy, maternal food restriction (FR) resulting in IUGR would decrease the overall immunotolerant milieu in the placenta, leading to increased cellular stress and death...
October 2016: Nutrition Research
https://www.readbyqxmd.com/read/27861916/sildenafil-therapy-for-fetal-cardiovascular-dysfunction-during-hypoxic-development-studies-in-the-chick-embryo
#16
Nozomi Itani, Katie L Skeffington, Christian Beck, Dino A Giussani
There is a need for developing clinically translatable therapy for preventing fetal origins of cardiovascular disease in pregnancy complicated by chronic fetal hypoxia. Evidence shows that sildenafil protects placental perfusion and fetal growth. However, whether beneficial effects of sildenafil transcend onto the fetal heart and circulation in complicated development is unknown. We isolated the direct effects of sildenafil on the fetus using the chick embryo and hypothesised that sildenafil also protects fetal cardiovascular function in hypoxic development...
November 12, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27860192/metabolite-profiling-of-whole-murine-embryos-reveals-metabolic-perturbations-associated-with-maternal-valproate-induced-neural-tube-closure-defects
#17
Darya Akimova, Bogdan J Wlodarczyk, Ying Lin, M Elizabeth Ross, Richard H Finnell, Qiuying Chen, Steven S Gross
BACKGROUND: Valproic acid (VPA) is prescribed therapeutically for multiple conditions, including epilepsy. When taken during pregnancy, VPA is teratogenic, increasing the risk of several birth and developmental defects including neural tube defects (NTDs). The mechanism by which VPA causes NTDs remains controversial and how VPA interacts with folic acid (FA), a vitamin commonly recommended for the prevention of NTDs, remains uncertain. We sought to address both questions by applying untargeted metabolite profiling analysis to neural tube closure (NTC) stage mouse embryos...
November 18, 2016: Birth Defects Research. Part A, Clinical and Molecular Teratology
https://www.readbyqxmd.com/read/27858152/effect-of-elevated-estradiol-levels-on-the-hcg-administration-day-on-ivf-pregnancy-and-birth-outcomes-in-the-long-gnrh-agonist-protocol-analysis-of-3393-cycles
#18
Meimei Wang, Cuifang Hao, Hongchu Bao, Xin Huang, Zhenteng Liu, Wei Zhang, Fenghua Li
INTRODUCTION: This retrospective study aimed to evaluate the association between elevated serum estradiol (E 2) levels on the human chorionic gonadotrophin (hCG) administration day and in vitro fertilization (IVF) pregnancy and birth outcomes in the long GnRH-agonist protocol. METHODS: This study analyzed the data of 3393 infertile women who underwent initial fresh IVF. The patients were categorized into high and low E 2 groups based on their serum E 2 levels on the hCG day...
November 17, 2016: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/27853269/unraveling-the-association-between-genetic-integrity-and-metabolic-activity-in-pre-implantation-stage-embryos
#19
Fiona D'Souza, Shivanand M Pudakalakatti, Shubhashree Uppangala, Sachin Honguntikar, Sujith Raj Salian, Guruprasad Kalthur, Renu Pasricha, Divya Appajigowda, Hanudatta S Atreya, Satish Kumar Adiga
Early development of certain mammalian embryos is protected by complex checkpoint systems to maintain the genomic integrity. Several metabolic pathways are modulated in response to genetic insults in mammalian cells. The present study investigated the relationship between the genetic integrity, embryo metabolites and developmental competence in preimplantation stage mouse embryos with the aim to identify early biomarkers which can predict embryonic genetic integrity using spent medium profiling by NMR spectroscopy...
November 17, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27848040/modifications-in-the-proteome-of-rainbow-trout-oncorhynchus-mykiss-embryo-and-fry-as-an-effect-of-triploidy-induction
#20
Samad Bahrami Babaheydari, Saeed Keyvanshokooh, Salar Dorafshan, Seyed Ali Johari
Two-dimensional gel electrophoresis (2-DE), matrix-assisted laser desorption/ionization tandem time-of-flight (MALDI-TOF/TOF) mass spectrometry, and database searching were used to analyze the effects of triploidization heat shock treatment on protein expression in rainbow trout eyed embryo and fry. After fertilization, the eggs were incubated at 10 °C for 10 min. Half of the eggs were then subjected to heat shock for 10 min submerged in a 28 °C water bath to induce triploidy. The remainder was incubated normally and used as diploid controls...
November 15, 2016: Fish Physiology and Biochemistry
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