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https://www.readbyqxmd.com/read/28445719/kat-independent-gene-regulation-by-tip60-promotes-esc-self-renewal-but-not-pluripotency
#1
Diwash Acharya, Sarah J Hainer, Yeonsoo Yoon, Feng Wang, Ingolf Bach, Jaime A Rivera-Pérez, Thomas G Fazzio
Although histone-modifying enzymes are generally assumed to function in a manner dependent on their enzymatic activities, this assumption remains untested for many factors. Here, we show that the Tip60 (Kat5) lysine acetyltransferase (KAT), which is essential for embryonic stem cell (ESC) self-renewal and pre-implantation development, performs these functions independently of its KAT activity. Unlike ESCs depleted of Tip60, KAT-deficient ESCs exhibited minimal alterations in gene expression, chromatin accessibility at Tip60 binding sites, and self-renewal, thus demonstrating a critical KAT-independent role of Tip60 in ESC maintenance...
April 25, 2017: Cell Reports
https://www.readbyqxmd.com/read/28442143/polypropylene-mesh-seeded-with-fibroblasts-a-new-approach-for-the-repair-of-abdominal-wall-defects-in-rats
#2
A Mohsina, Naveen Kumar, A K Sharma, Sameer Shrivastava, Dayamon D Mathew, V Remya, Sonal, S K Maiti, Kiranjeet Singh, K P Singh
PURPOSE: The purpose of study was to develop bioengineered scaffolds by seeding primary mouse embryo fibroblast cells (p-MEF) on polypropylene mesh and to test its efficacy for the repair of abdominal wall defects in rats. METHODS: The study was conducted on 18 clinically healthy adult Wistar rats of either sex. The animals were randomly divided into two equal groups having nine animals in each group. In both the groups a 20mm×20mm size full thickness muscle defect was created under xylazine and ketamine anesthesia in the mid-ventral abdominal wall...
April 17, 2017: Tissue & Cell
https://www.readbyqxmd.com/read/28442048/expression-of-17%C3%AE-hydroxysteroid-dehydrogenase-and-the-effects-of-lh-fsh-and-prolactin-on-oestrone-and-17%C3%AE-oestradiol-secretion-in-the-endometrium-of-pigs-during-early-pregnancy-and-the-oestrous-cycle
#3
B Wojciechowicz, G Kotwica, K Zglejc, E Waszkiewicz, A Franczak
The endometrium of pregnant and cyclic pigs is a source of oestrone (E1) and 17β-oestradiol (E2). However, the roles of LH, FSH and prolactin (PRL) as regulators of endometrial steroidogenesis, and the presence of 17β-hydroxysteroid dehydrogenase (17β-HSD) in the porcine endometrium, remain unknown. Therefore, in the present study we examined 17β-HSD expression and the effects of LH, FSH and PRL on E1 and E2 release in vitro in endometrial explants harvested from gravid pigs on Days 10-11 (embryo migration within the uterus), 12-13 (maternal recognition of pregnancy) and 15-16 (beginning of implantation) and compared them with results obtained in non-gravid pigs...
April 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28441042/aberrantly-expressed-long-noncoding-rnas-in-recurrent-implantation-failure-a-microarray-related-study
#4
Li-Juan Fan, Hong-Jing Han, Jing Guan, Xiao-Wei Zhang, Qing-Hua Cui, Huan Shen, Cheng Shi
Long noncoding RNAs (lncRNAs) are a class of noncoding RNAs longer than 200 nucleotides. They were long regarded as transcription noise for their low expression and non-protein coding features. Recent published reports indicate that lncRNAs are involved in virtually every aspect of human biology. We aimed to profile the endometrial lncRNA expression pattern in women with recurrent implantation failure (RIF) and predict the function of the genes of the dysregulated lncRNA transcripts. Endometrial samples (24) were collected during window of implantation (14 RIF women and 10 women who conceived after embryo transfer)...
April 25, 2017: Systems Biology in Reproductive Medicine
https://www.readbyqxmd.com/read/28436127/tip110-deletion-impaired-embryonic-and-stem-cell-development-involving-down-regulation-of-stem-cell-factors-nanog-oct4-and-sox2
#5
Amanda Whitmill, Ying Liu, Khalid Amine Timani, Yinghua Niu, Johnny J He
HIV-1 Tat-interacting protein of 110 kDa, Tip110, plays important roles in multiple biological processes. In this study, we aimed to characterize the function of Tip110 in embryonic development. Transgenic mice lacking expression of a functional Tip110 gene (Tip110(-/-) ) died post-implantation, and Tip110(-/-) embryos exhibited developmental arrest between 8.5 and 9.5 days post coitum. However, in vitro cultures of Tip110(-/-) embryos showed that Tip110 loss did not impair embryo growth from the zygote to the blastocyst...
April 24, 2017: Stem Cells
https://www.readbyqxmd.com/read/28436055/implantation-window-and-angiogenesis
#6
Mostafa Peyvandi Karizbodagh, Bahman Rashidi, Amirhossein Sahebkar, Aria Masoudifar, Hamed Mirzaei
In recent decades, infertility is one of the health problems worldwide. One of the most crucial events in reproductive period is implantation window (IW). In the time after IW period, the embryo cannot connect to the endometrium; therefore the most critical issue for successful implantation is timely entrance of embryo to the uterine cavity during the IW. Implantation failure is responsible for many cases of infertility and is the most important limiting factor for achieving a successful outcome using the assisted reproductive techniques (ART)...
April 24, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28434778/live-birth-potential-of-good-morphology-and-vitrified-blastocysts-presenting-abnormal-cell-divisions
#7
Antonino Azzarello, Thomas Hoest, Anders Hay-Schmidt, Anne Lis Mikkelsen
This study included 238 good morphology blastocysts, which were transferred after vitrification-warming to 152 women by single blastocyst transfer in Holbæk Fertility Clinic, Denmark. Time-lapse recordings of transferred good morphology blastocysts were reassessed to recognize every abnormal cell division (ACD) from the 1st to the 4th cell cycle. ACDs were distinguished as failed cell divisions and multi-cell divisions. ACDs were recognized in 37.0% (no. 88/238) of good morphology blastocysts that were vitrified-warmed and transferred in our clinic...
April 20, 2017: Reproductive Biology
https://www.readbyqxmd.com/read/28433370/assessing-the-true-incidence-of-mosaicism-in-preimplantation-embryos
#8
REVIEW
Maria Vera-Rodriguez, Carmen Rubio
Modern technologies applied to the field of preimplantation genetic diagnosis for aneuploidy screening (PGD-A) have improved the ability to identify the presence of mosaicism. Consequently, new questions can now be addressed regarding the potential impact of embryo mosaicism on diagnosis accuracy and the feasibility of considering mosaic embryos for transfer. The frequency of chromosomal mosaicism in products of conception (POCs) of early miscarriages has been reported to be low. Mosaic embryos with an aneuploid inner cell mass are typically lost during the first trimester owing to spontaneous miscarriages...
April 19, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28433367/abnormal-implantation-after-fresh-and-frozen-in%C3%A2-vitro-fertilization-cycles
#9
Erica T Wang, Anupama S Q Kathiresan, Catherine Bresee, Naomi Greene, Carolyn Alexander, Margareta D Pisarska
OBJECTIVE: To determine whether fresh embryo transfers are at a higher risk of abnormal implantation compared with frozen embryo transfers while accounting for the embryo stage at transfer. DESIGN: Retrospective cohort study. SETTING: Not applicable. PATIENT(S): We used data from the Society for Assisted Reproductive Technologies to identify all fresh and frozen autologous IVF cycles from 2004-2013 resulting in a positive pregnancy test...
April 19, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28432707/suberoylanilide-hydroxamic-acid-a-novel-histone-deacetylase-inhibitor-improves-the-development-and-acetylation-level-of-miniature-porcine-handmade-cloning-embryos
#10
J M Sun, K Q Cui, Z P Li, X R Lu, Z F Xu, Q Y Liu, B Huang, D S Shi
Histone deacetylase inhibitors (HDACis) can change the histone acetylation and significantly enhance the developmental competence of the pre-implantation SCNT embryo. To select a proper histone deacetylase inhibitor to improve the success rate and potentially developmental ability of handmade cloning (HMC) embryos of miniature porcine, we compared the effect of two histone deacetylase inhibitors (SAHA vs. VPA) on HMC embryo development, their histone acetylation level and the expression level of relevant genes...
April 22, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28431985/quercetin-interferes-with-the-fluid-volume-and-receptivity-development-of-the-uterus-in-rats-during-the-peri-implantation-period
#11
Huma Shahzad, Nelli Giribabu, Kamarulzaman Karim, Normadiah Kassim, Sekaran Muniandy, Kilari Eswar Kumar, Naguib Salleh
HYPOTHESIS: quercetin could induce changes to the fluid volume and receptivity development of the uterus during peri-implantation period. METHODS: Female rats were treated with quercetin (10, 25 and 50mg/kg/day) subcutaneously beginning from day-1 pregnancy. Uterus was harvested at day-4 (following three days quercetin treatment) for morphological, ultra-structural, protein and mRNA expressional changes and plasma sex-steroid levels analyses. In another cohort of rats, implantation rate was determined at day-6 (following five days quercetin treatment)...
April 18, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28430684/flurbiprofen-axetil-provides-effective-analgesia-without-changing-the-pregnancy-rate-in-ultrasound-guided-transvaginal-oocyte-retrieval-a-double-blind-randomized-controlled-trial
#12
Hong Zhao, Yi Feng, Yan Jiang, Qun Lu
BACKGROUND: In this prospective double-blind randomized study, we evaluated the analgesic effect and potential effect on pregnancy rate of the nonsteroidal anti-inflammatory drug flurbiprofen axetil in patients undergoing ultrasound-guided transvaginal oocyte retrieval under propofol-remifentanil anesthesia. METHODS: A total of 200 patients scheduled to undergo ultrasound-guided transvaginal oocyte retrieval were randomly allocated to receive 1.5 mg/kg of flurbiprofen axetil (FA group) or placebo (control group) 30 minutes before the procedure...
April 19, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28429340/controlled-prospective-observational-study-on-the-efficiency-and-tolerability-of-a-combination-of-potential-nrf2-inducing-antioxidants-and-micronutrients-as-pre-treatment-for-icsi-in-dyspermic-patients-with-previous-failure
#13
R Rago, M Gallo, A Dal Lago, E Licata, G Paciotti, M Amodei, C Meneghini, C Fabiani, G Dani, C Liberanome, D Antonaci, R Corno, D Miriello, G Giuffrida, B Giammusso
OBJECTIVE: To evaluate the efficiency of pre-treatment in dyspermic males in IVF couples with a combination of micronutrients, for the purpose of improving the fertilization rate, the implantation rate and the outcome of the pregnancy. PATIENTS AND METHODS: This controlled prospective clinical study was performed in two medically assisted reproduction centers. 59 males with mild oligo-astheno-teratospermia (OAT) were admitted to the study. All of them had a history of previous in vitro fertilization (IVF) attempts with female partners aged < 40 diagnosed having tubal or idiopathic infertility...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28425233/comparison-of-the-standard-gnrh-antagonist-protocol-and-the-luteal-phase-estradiol-gnrh-antagonist-priming-protocol-in-poor-ovarian-responders
#14
Mehmet Fırat Mutlu, İlknur Mutlu, Mehmet Erdem, İsmail Güler, Ahmet Erdem
BACKGROUND/AIM: The aim of the study was to compare the luteal estradiol patch/GnRH antagonists priming protocol (LPP) with the standard GnRH antagonist protocol in poor ovarian responders (PORs) in terms of the outcomes of in vitro fertilization (IVF) treatment. MATERIALS AND METHODS: IVF outcomes of 265 cycles in 265 patients (106 in the LPP group, 159 in the standard GnRH antagonist group) were evaluated retrospectively. RESULTS: Mean length of stimulation (11...
April 18, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28425063/blastocyst-derived-stem-cell-populations-under-stress-impact-of-nutrition-and-metabolism-on-stem-cell-potency-loss-and-miscarriage
#15
REVIEW
Yu Yang, Alan Bolnick, Alexandra Shamir, Mohammed Abdulhasan, Quanwen Li, G C Parker, Elizabeth E Puscheck, D A Rappolee
Data from in vitro and in vivo models suggest that malnutrition and stress trigger adaptive responses, leading to small for gestational age (SGA) blastocysts with fewer cell numbers. These stress responses are initially adaptive, but become maladaptive with increasing stress exposures. The common stress responses of the blastocyst-derived stem cells, pluripotent embryonic and multipotent placental trophoblast stem cells (ESCs and TSCs), are decreased growth and potency, and increased, imbalanced and irreversible differentiation...
April 19, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/28424251/nuclear-shp2-directs-normal-embryo-implantation-via-facilitating-the-er%C3%AE-tyrosine-phosphorylation-by-the-src-kinase
#16
Hao Ran, Shuangbo Kong, Shuang Zhang, Jianghong Cheng, Chan Zhou, Bo He, Qiliang Xin, John P Lydon, Francesco J DeMayo, Gen-Sheng Feng, Guoliang Xia, Zhongxian Lu, Chao Wang, Haibin Wang
Estrogen and progesterone coupled with locally produced signaling molecules are essential for embryo implantation. However, the hierarchical landscape of the molecular pathways that governs this process remains largely unexplored. Here we show that the protein tyrosine phosphatase Shp2, a positive transducer of RTK signaling, is predominately localized in the nuclei in the periimplantation mouse uterus. Uterine-specific deletion of Shp2 exhibits reduced progesterone receptor (PR) expression and progesterone resistance, which derails normal uterine receptivity, leading to complete implantation failure in mice...
April 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28423001/pre-hatching-embryo-dependent-and-independent-programming-of-endometrial-function-in-cattle
#17
Mariana Sponchiado, Nathália Souza Gomes, Patrícia Kubo Fontes, Thiago Martins, Maite Del Collado, Athos de Assumpção Pastore, Guilherme Pugliesi, Marcelo Fábio Gouveia Nogueira, Mario Binelli
The bovine pre-implantation embryo secretes bioactive molecules from early development stages, but effects on endometrial function are reported to start only after elongation. Here, we interrogated spatially defined regions of the endometrium transcriptome for responses to a day 7 embryo in vivo. We hypothesize that exposure to an embryo changes the abundance of specific transcripts in the cranial region of the pregnant uterine horn. Endometrium was collected from the uterotubal junction (UTJ), anterior (IA), medial (IM) and posterior (IP) regions of the uterine horn ipsilateral to the CL 7 days after estrus from sham-inseminated (Con) or artificially inseminated, confirmed pregnant (Preg) cows...
2017: PloS One
https://www.readbyqxmd.com/read/28422984/the-impact-of-atosiban-on-pregnancy-outcomes-in-women-undergoing-in-vitro-fertilization-embryo-transfer-a-meta-analysis
#18
Qian-Yi Huang, Min-Hua Rong, Ai-Hua Lan, Xiao-Miao Lin, Xing-Gu Lin, Rong-Quan He, Gang Chen, Mu-Jun Li
BACKGROUND: Atosiban is administered to women undergoing in vitro fertilization-embryo transfer (IVF-ET) to improve pregnancy outcomes. However, the results of this treatment were controversial. We conducted this meta-analysis to investigate whether atosiban improves pregnancy outcomes in the women undergoing in vitro fertilization (IVF). METHODS: Databases of PubMed, EMBASE, Web of Science, China BioMedicine, and Google Scholar were systematically searched. Meta-analyses were performed to investigate whether atosiban improves pregnancy outcomes in the women undergoing IVF...
2017: PloS One
https://www.readbyqxmd.com/read/28422380/comparing-the-long-acting-and-short-acting-forms-of-gonadotropin-releasing-hormone-agonists-in-the-long-protocol-of-ivf-icsi-cycles-a-retrospective-study
#19
Liyan Duan, Shihua Bao, Kunming Li, Xiaoming Teng, Ling Hong, Xiaoyu Zhao
AIM: This study aimed to compare the efficacy of long- and short-acting gonadotropin-releasing hormone agonist on clinical outcomes of in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) long protocol cycles. METHODS: In this retrospective study, 478 patients were enrolled from October 2012 to November 2014. The pituitary downregulation result, serum hormone levels, gonadotropin (Gn) dose during controlled ovarian hyperstimulation, and outcome of IVF/ICSI-embryo transfer were compared between the two groups...
April 19, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28421493/chapter-9-slow-freezing-and-thawing-of-human-cleavage-stage-embryos
#20
David H Edgar, Janell Archer, Debra A Gook
The ability to store human embryos in a viable state at very low temperatures has been critical to the evolution of responsible practice in clinical Assisted Reproductive Technology (ART). It has encouraged a reduction in the frequency of simultaneous multiple embryo transfer and thereby reduced the risks associated with multiple pregnancy while maintaining high cumulative pregnancy rates from single oocyte collection cycles. In this chapter, we describe a simple slow freezing procedure for human early cleavage stage embryos that results in a high proportion of post-thaw embryos surviving and retaining their implantation potential...
2017: Methods in Molecular Biology
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