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Molecular Human Reproduction

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https://www.readbyqxmd.com/read/28911214/growth-regulation-by-estrogen-in-breast-cancer-1-greb1-is-a-novel-progesterone-responsive-gene-required-for-human-endometrial-stromal-decidualization
#1
Alison J Camden, Maria M Szwarc, Sangappa B Chadchan, Francesco J DeMayo, Bert W O'Malley, John P Lydon, Ramakrishna Kommagani
STUDY QUESTION: Is Growth Regulation by Estrogen in Breast Cancer 1 (GREB1) required for progesterone-driven endometrial stromal cell decidualization? SUMMARY ANSWER: GREB1 is a novel progesterone-responsive gene required for progesterone-driven human endometrial stromal cell (HESC) decidualization. WHAT IS KNOWN ALREADY: Successful establishment of pregnancy requires HESCs to transform from fibroblastic to epithelioid cells in a process called decidualization...
September 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28911213/effects-of-oncotherapy-on-testicular-stem-cells-and-niche
#2
Deepa Bhartiya, Sandhya Anand
No abstract text is available yet for this article.
September 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28911212/apposition-to-endometrial-epithelial-cells-activates-mouse-blastocysts-for-implantation
#3
Peter T Ruane, Stéphane C Berneau, Rebekka Koeck, Jessica Watts, Susan J Kimber, Daniel R Brison, Melissa Westwood, John D Aplin
STUDY QUESTION: How do interactions between blastocyst-stage embryos and endometrial epithelial cells regulate the early stages of implantation in an in vitro model? SUMMARY ANSWER: Mouse blastocyst apposition with human endometrial epithelial cells initiates trophectoderm differentiation to trophoblast, which goes on to breach the endometrial epithelium. WHAT IS KNOWN ALREADY: In vitro models using mouse blastocysts and human endometrial cell lines have proven invaluable in the molecular characterisation of embryo attachment to endometrial epithelium at the onset of implantation...
September 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28911211/are-there-intracellular-ca2-oscillations-correlated-with-flagellar-beating-in-human-sperm-a-three-vs-two-dimensional-analysis
#4
G Corkidi, F Montoya, P Hernández-Herrera, W A Ríos-Herrera, M F Müller, C L Treviño, A Darszon
STUDY QUESTION: Are there intracellular Ca2+ ([Ca2+]i) oscillations correlated with flagellar beating in human sperm? SUMMARY ANSWER: The results reveal statistically significant [Ca2+]i oscillations that are correlated with the human sperm flagellar beating frequency, when measured in three-dimensions (3D). WHAT IS KNOWN ALREADY: Fast [Ca2+]i oscillations that are correlated to the beating flagellar frequency of cells swimming in a restricted volume have been detected in hamster sperm...
September 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28911210/a20-an-essential-component-of-the-ubiquitin-editing-protein-complex-is-a-negative-regulator-of-inflammation-in-human-myometrium-and-foetal-membranes
#5
Martha Lappas
STUDY QUESTION: Does A20 regulate mediators involved in the terminal processes of human labour in primary myometrial and amnion cells? SUMMARY ANSWER: A20 is a nuclear factor-kappa B (NF-κB) responsive gene that acts as a negative regulator of NF-κB-induced expression of pro-labour mediators. WHAT IS KNOWN ALREADY: Inflammation is commonly implicated in spontaneous preterm birth and the processes involved in rupture of foetal membranes and uterine contractions...
September 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28911209/intracellular-activation-of-ovastacin-mediates-pre-fertilization-hardening-of-the-zona-pellucida
#6
Hagen Körschgen, Michael Kuske, Konstantin Karmilin, Irene Yiallouros, Melanie Balbach, Julia Floehr, Dagmar Wachten, Willi Jahnen-Dechent, Walter Stöcker
STUDY QUESTION: How and where is pro-ovastacin activated and how does active ovastacin regulate zona pellucida hardening (ZPH) and successful fertilization? STUDY FINDING: Ovastacin is partially active before exocytosis and pre-hardens the zona pellucida (ZP) before fertilization. WHAT IS KNOWN ALREADY: The metalloproteinase ovastacin is stored in cortical granules, it cleaves zona pellucida protein 2 (ZP2) upon fertilization and thereby destroys the ZP sperm ligand and triggers ZPH...
September 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28586460/a-pre-in-vitro-maturation-medium-containing-cumulus-oocyte-complex-ligand-receptor-signaling-molecules-maintains-meiotic-arrest-supports-the-cumulus-oocyte-complex-and-improves-oocyte-developmental-competence
#7
Nicolas W Santiquet, Alison F Greene, John Becker, Jennifer P Barfield, William B Schoolcraft, Rebecca L Krisher
STUDY QUESTION: Can a pre-in vitro maturation (pre-IVM) medium containing signaling molecules rather than chemical/pharmaceutical agents, sustain meiotic arrest and improve developmental competence of in vitro matured oocytes in CF1 outbred mice? SUMMARY ANSWER: A short 2 h period of pre-IVM prevents spontaneous meiotic resumption, improves mitochondria activity in subsequently matured oocytes, and increases developmental competence, pregnancy rate and implantation of resulting embryos...
September 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28810693/deregulation-of-the-endometrial-stromal-cell-secretome-precedes-embryo-implantation-failure
#8
Ruban Rex Peter Durairaj, Asma Aberkane, Lukasz Polanski, Yojiro Maruyama, Miriam Baumgarten, Emma S Lucas, Siobhan Quenby, Jerry K Y Chan, Nick Raine-Fenning, Jan J Brosens, Hilde Van de Velde, Yie Hou Lee
No abstract text is available yet for this article.
August 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28810692/resveratrol-protects-from-lipopolysaccharide-induced-inflammation-in-the-uterus-and-prevents-experimental-preterm-birth
#9
María Victoria Bariani, Fernando Correa, Emma Leishman, Ana Paula Domínguez Rubio, Andreína Arias, Aníbal Stern, Heather B Bradshaw, Ana María Franchi
STUDY QUESTION: Is resveratrol able to prevent the lipopolysaccharide (LPS)-induced preterm labor in 15-day pregnant BALB/c mice? SUMMARY ANSWER: Resveratrol prevented the LPS-induced onset of preterm labor in 64% of the cases and showed anti-inflammatory and tocolytic effects by downregulating COX-2 and iNOS expression and NOS activity, and by changing the uterine prostaglandin and endocannabinoid profiling. WHAT IS KNOWN ALREADY: Genital tract infections by Gram-negative bacteria are a common complication in human pregnancy and have been shown to increase risk of preterm delivery...
August 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28810691/improvement-of-implantation-potential-in-mouse-blastocysts-derived-from-ivf-by-combined-treatment-with-prolactin-epidermal-growth-factor-and-4-hydroxyestradiol
#10
Miki Takeuchi, Misato Seki, Etsuko Furukawa, Akihito Takahashi, Kyosuke Saito, Mitsuru Kobayashi, Kenji Ezoe, Emiko Fukui, Midori Yoshizawa, Hiromichi Matsumoto
STUDY QUESTION: Can supplementation of medium with prolactin (PRL), epidermal growth factor (EGF) and 4-hydroxyestradiol (4-OH-E2) prior to embryo transfer improve implantation potential in mouse blastocysts derived from IVF? SUMMARY ANSWER: Combined treatment with PRL, EGF and 4-OH-E2 improves mouse blastocyst implantation rates, while alone, each factor is ineffective. WHAT IS KNOWN ALREADY: Blastocyst dormancy during delayed implantation caused by ovariectomy is maintained by continued progesterone treatment in mice, and estrogen injection rapidly activates blastocysts to implantation-induced status in vivo...
August 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28595284/infertility-diagnosis-has-a-significant-impact-on-the-transcriptome-of-developing-blastocysts
#11
Blair R McCallie, Jason C Parks, Darren K Griffin, William B Schoolcraft, Mandy G Katz-Jaffe
STUDY QUESTION: Is the human blastocyst transcriptome associated with infertility diagnosis, specifically: polycystic ovaries (PCO), male factor (MF) and unexplained (UE)? SUMMARY ANSWER: The global blastocyst transcriptome was significantly altered in association with a PCO, MF and UE infertility diagnosis. WHAT IS KNOWN ALREADY: Infertility diagnosis has an impact on the probability for a successful outcome following an IVF cycle. Limited information is known regarding the relationship between a specific infertility diagnosis and blastocyst transcription during preimplantation development...
August 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28586423/the-transcriptome-of-human-oocytes-is-related-to-age-and-ovarian-reserve
#12
M Barragán, J Pons, A Ferrer-Vaquer, D Cornet-Bartolomé, A Schweitzer, J Hubbard, H Auer, A Rodolosse, R Vassena
STUDY QUESTION: How does the human oocyte transcriptome change with age and ovarian reserve? SUMMARY ANSWER: Specific sets of human oocyte messenger RNAs (mRNAs) and non-coding RNAs (ncRNAs) are affected independently by age and ovarian reserve. WHAT IS KNOWN ALREADY: Although it is well established that the ovarian reserve diminishes with increasing age, and that a woman's age is correlated with lower oocyte quality, the interplay of a diminished reserve and age on oocyte developmental competence is not clear...
August 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28521061/extracellular-camp-activates-molecular-signalling-pathways-associated-with-sperm-capacitation-in-bovines
#13
Carlos Agustín I Alonso, Claudia E Osycka-Salut, Luciana Castellano, Andreína Cesari, Nicolás Di Siervi, Adrián Mutto, Anders Johannisson, Jane M Morrell, Carlos Davio, Silvina Perez-Martinez
STUDY QUESTION: Is extracellular cAMP involved in the regulation of signalling pathways in bovine sperm capacitation? SUMMARY ANSWER: Extracellular cAMP induces sperm capacitation through the activation of different signalling pathways that involve phospholipase C (PLC), PKC/ERK1-2 signalling and an increase in sperm Ca2+ levels, as well as soluble AC and cAMP/protein kinase A (PKA) signalling. WHAT IS KNOWN ALREADY: In order to fertilize the oocyte, ejaculated spermatozoa must undergo a series of changes in the female reproductive tract, known as capacitation...
August 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28535307/intergenerational-impact-of-paternal-lifetime-exposures-to-both-folic-acid-deficiency-and-supplementation-on-reproductive-outcomes-and-imprinted-gene-methylation
#14
Lundi Ly, Donovan Chan, Mahmoud Aarabi, Mylène Landry, Nathalie A Behan, Amanda J MacFarlane, Jacquetta Trasler
STUDY QUESTION: Do paternal exposures to folic acid deficient (FD), and/or folic acid supplemented (FS) diets, throughout germ cell development adversely affect male germ cells and consequently offspring health outcomes? SUMMARY ANSWER: Male mice exposed over their lifetimes to both FD and FS diets showed decreased sperm counts and altered imprinted gene methylation with evidence of transmission of adverse effects to the offspring, including increased postnatal-preweaning mortality and variability in imprinted gene methylation...
July 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28510703/long-chain-fatty-acid-triglyceride-tg-metabolism-disorder-impairs-male-fertility-a-study-using-adipose-triglyceride-lipase-deficient-mice
#15
Hidetake Masaki, Namhyo Kim, Hitomi Nakamura, Keiichi Kumasawa, Eriko Kamata, Ken-Ichi Hirano, Tadashi Kimura
STUDY QUESTION: Does the deletion of adipose triglyceride lipase (Atgl) gene impair male fertility? SUMMARY ANSWER: The deletion of Atgl gene impaired male fertility but the effect was partially reversed by a low long-chain triglyceride (TG) diet. WHAT IS KNOWN ALREADY: ATGL specifically hydrolyses long-chain fatty acid TG to diacylglycerol and a high level of expression of ATGL in testes has been reported. However, the role of ATGL in male fertility is unknown...
July 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28486700/dysregulation-of-the-adam17-notch-signalling-pathways-in-endometriosis-from-oxidative-stress-to-fibrosis
#16
Iñaki González-Foruria, Pietro Santulli, Sandrine Chouzenoux, Francisco Carmona, Charles Chapron, Frédéric Batteux
STUDY QUESTION: Is oxidative stress associated with the A disintegrin and metalloproteases (ADAM) metallopeptidase domain 17 (ADAM17)/Notch signalling pathway and fibrosis in the development of endometriosis? SUMMARY ANSWER: Oxidative stress is correlated with hyperactivation of the ADAM17/Notch signalling pathway and a consequent increase in fibrosis in patients with endometriosis. WHAT IS KNOWN ALREADY: It is nowadays accepted that oxidative stress plays an important role in the onset and progression of endometriosis...
July 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28460003/evidence-for-cb2-receptor-involvement-in-lps-induced-reduction-of-camp-intracellular-levels-in-uterine-explants-from-pregnant-mice-pathophysiological-implications
#17
Ana Inés Salazar, Alejandro Carozzo, Fernando Correa, Carlos Davio, Ana María Franchi
STUDY QUESTION: What is the role of the endocannabinoid system (eCS) on the lipopolysaccharide (LPS) effects on uterine explants from 7-day pregnant mice in a murine model of endotoxin-induced miscarriage? SUMMARY ANSWER: We found evidence for cannabinoid receptor type2 (CB2) involvement in LPS-induced increased prostaglandin-F2α (PGF2α) synthesis and diminished cyclic adenosine monophosphate (cAMP) intracellular content in uterine explants from early pregnant mice...
July 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28431025/1h-magnetic-resonance-spectroscopy-of-live-human-sperm
#18
S Reynolds, S J Calvert, M N Paley, A A Pacey
STUDY QUESTION: Can 1H Magnetic Resonance Spectroscopy (MRS) be used to obtain information about the molecules and metabolites in live human spermatozoa? SUMMARY ANSWER: Percoll-based density gradient centrifugation (DGC) followed by a further two washing steps, yielded enough sperm with minimal contamination (<0.01%) from seminal fluid to permit effective MRS which detected significant differences (P < 0.05) in the choline/glycerophosphocholine (GPC), lipid and lactate regions of the 1H MRS spectrum between sperm in the pellet and those from the 40%/80% interface...
July 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28402555/deregulation-of-the-endometrial-stromal-cell-secretome-precedes-embryo-implantation-failure
#19
Ruban Rex Peter Durairaj, Asma Aberkane, Lukasz Polanski, Yojiro Maruyama, Miriam Baumgarten, Emma S Lucas, Siobhan Quenby, Jerry K Y Chan, Nick Raine-Fenning, Jan J Brosens, Hilde Van de Velde, Yie Hou Lee
STUDY QUESTION: Is implantation failure following ART associated with a perturbed decidual response in endometrial stromal cells (EnSCs)? SUMMARY ANSWER: Dynamic changes in the secretome of decidualizing EnSCs underpin the transition of a hostile to a supportive endometrial microenvironment for embryo implantation; perturbation in this transitional pathway prior to ART is associated with implantation failure. WHAT IS KNOWN ALREADY: Implantation is the rate-limiting step in ART, although the contribution of an aberrant endometrial microenvironment in IVF failure remains ill defined...
July 1, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28402512/defective-trophoblast-invasion-underlies-fetal-growth-restriction-and-preeclampsia-like-symptoms-in-the-stroke-prone-spontaneously-hypertensive-rat
#20
G Barrientos, M Pussetto, M Rose, A C Staff, S M Blois, J E Toblli
STUDY QUESTION: What is the impact of chronic hypertension on placental development, fetal growth and maternal outcome in the stroke-prone spontaneously hypertensive rat (SHRSP)? SUMMARY ANSWER: SHRSP showed an impaired remodeling of the spiral arteries and abnormal pattern of trophoblast invasion during placentation, which were associated with subsequent maternal glomerular injury and increased baseline hypertension as well as placental insufficiency and asymmetric fetal growth restriction (FGR)...
July 1, 2017: Molecular Human Reproduction
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