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Molecular Human Reproduction

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https://www.readbyqxmd.com/read/30016502/a-novel-transcriptional-network-for-the-androgen-receptor-in-human-epididymis-epithelial-cells
#1
Rui Yang, James A Browne, Scott E Eggener, Shih-Hsing Leir, Ann Harris
STUDY QUESTION: What is the transcriptional network governed by the androgen receptor (AR) in human epididymis epithelial (HEE) cells from the caput region and if the network is tissue-specific, how is this achieved? SUMMARY ANSWER: About 200 genes are differentially expressed in the caput HEE cells after AR activation; the AR transcriptional network is tissue-specific and may be mediated in part by distinct AR co-factors including CAAT-enhancer binding protein beta (CEBPB) and runt-related transcription factor 1 (RUNX1)...
July 17, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29939362/education-education-education-now-more-than-ever
#2
Claus Yding Andersen, Kristensen Stine G, Mamsen Linn Salto, Barratt Christopher L R
No abstract text is available yet for this article.
June 25, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29939354/igf2-derived-mir-483-3p-contributes-to-macrosomia-through-regulating-trophoblast-proliferation-by-targeting-rb1cc1
#3
Jing Li, Ziqiang Fu, Hua Jiang, Liping Chen, Xian Wu, Hongjuan Ding, Yankai Xia, Xinru Wang, Qiuqin Tang, Wei Wu
STUDY QUESTION: What is the role of insulin-like growth factor 2 (IGF2)-derived miR-483-3p in macrosomia? SUMMARY ANSWER: IGF2-derived intronic miR-483-3p is overexpressed in macrosomia placentas, and miR-483-3p prompts HTR-8/SVneo extravillous trophoblast cell line proliferation through down-regulation of its target RB1 inducible coiled-coil 1 (RB1CC1). WHAT IS KNOWN ALREADY: Macrosomia is a common pregnancy-associated disease and causes a number of adverse maternal and perinatal outcomes...
June 25, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29846695/heterogeneous-nuclear-ribonucleoprotein-c1-may-control-mir-30d-levels-in-endometrial-exosomes-affecting-early-embryo-implantation
#4
N Balaguer, I Moreno, M Herrero, M González, C Simón, F Vilella
STUDY QUESTION: Is there a specific mechanism to load the microRNA, hsa-miR-30d, into exosomes to facilitate maternal communication with pre-implantation embryos? SUMMARY ANSWER: The heterogeneous nuclear ribonucleoprotein C1 (hnRNPC1) is involved in the internalization of endometrial miR-30d into exosomes to prepare for its subsequent incorporation into trophectoderm cells. WHAT IS KNOWN ALREADY: Our group previously described a novel cell-to-cell communication mechanism involving the delivery of endometrial microRNAs (miRNAs) from the maternal endometrium to the trophectoderm cells of preimplantation embryos...
May 29, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29846669/characterization-of-a-nonhuman-primate-model-for-the-study-of-testicular-peritubular-cells-comparison-with-human-testicular-cells
#5
N Schmid, J B Stöckl, F Flenkenthaler, K-G Dietrich, J U Schwarzer, F-M Köhn, C Drummer, T Fröhlich, G J Arnold, R Behr, A Mayerhofer
STUDY QUESTION: Are monkey testicular peritubular cells (MKTPCs) from the common marmoset monkey (Callithrix jacchus) a suitable translational model for the study of human testicular peritubular cells (HTPCs)? SUMMARY ANSWER: MKTPCs can be isolated and propagated in vitro, retain characteristic markers for testicular peritubular cells and their proteome strongly (correlation coefficient of 0.78) overlaps with the proteome of HTPCs. WHAT IS KNOWN ALREADY: Smooth-muscle-like peritubular cells form the wall of seminiferous tubules, transport sperm, are immunologically active, secrete a plethora of factors and may contribute to the spermatogonial stem cell niche...
May 29, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29788434/a-novel-mouse-model-of-testicular-granulosa-cell-tumors
#6
Xin Fang, Nan Ni, Yang Gao, David F Vincent, Laurent Bartholin, Qinglei Li
STUDY QUESTION: What is the role of dysregulated transforming growth factor beta (TGFB) signaling in the development of sex cord-stromal tumors in the testis? SUMMARY ANSWER: Overactivation of TGFB signaling results in the development of testicular tumors resembling granulosa cell tumors (GrCTs). WHAT IS KNOWN ALREADY: In an earlier study, we demonstrated that constitutively active TGFB receptor 1 (TGFBR1) in ovarian somatic cells promotes the development of ovarian GrCTs...
May 21, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29750265/building-tomorrow-s-in-vitro-derived-germ-cells-on-today-s-solid-facts
#7
Michele Boiani
No abstract text is available yet for this article.
May 10, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29746690/retrospective-analysis-reproducibility-of-interblastomere-differences-of-mrna-expression-in-2-cell-stage-mouse-embryos-is-remarkably-poor-due-to-combinatorial-mechanisms-of-blastomere-diversification
#8
E Casser, S Israel, S Schlatt, V Nordhoff, M Boiani
STUDY QUESTION: What is the prevalence, reproducibility and biological significance of transcriptomic differences between sister blastomeres of the mouse 2-cell embryo? SUMMARY ANSWER: Sister 2-cell stage blastomeres are distinguishable from each other by mRNA analysis, attesting to the fact that differentiation starts mostly early in the mouse embryo; however, the interblastomere differences are poorly reproducible and invoke the combinatorial effects of known and new mechanisms of blastomere diversification...
May 9, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29741731/expression-of-grim-19-in-unexplained-recurrent-spontaneous-abortion-and-possible-pathogenesis
#9
Yang Yang, Laiyang Cheng, Xiaohui Deng, Hongling Yu, Lan Chao
STUDY QUESTION: Is aberrant expression of gene associated with retinoid-interferon-induced mortality-19 (GRIM-19) associated with unexplained recurrent spontaneous abortion (URSA)? SUMMARY ANSWER: GRIM-19 deficiency may regulate regulatory T cell/ T helper 17 cell (Treg/Th17) balance partly through reactive oxygen species (ROS) - mammalian target of rapamycin (mTOR) signaling axis in URSA. WHAT IS KNOWN ALREADY: Immunological disorders may cause impaired maternal immune tolerance to the fetus and result in fetal rejection...
May 8, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29846687/expression-of-adhesion-and-extracellular-matrix-genes-in-human-blastocysts-upon-attachment-in-a-2d-co-culture-system
#10
A Aberkane, W Essahib, C Spits, C De Paepe, K Sermon, T Adriaenssens, S Mackens, H Tournaye, J J Brosens, H Van de Velde
STUDY QUESTION: What are the changes in human embryos, in terms of morphology and gene expression, upon attachment to endometrial epithelial cells? SUMMARY ANSWER: Apposition and adhesion of human blastocysts to endometrial epithelial cells are predominantly initiated at the embryonic pole and these steps are associated with changes in expression of adhesion and extracellular matrix (ECM) genes in the embryo. WHAT IS KNOWN ALREADY: Both human and murine embryos have been co-cultured with Ishikawa cells, although embryonic gene expression associated with attachment has not yet been investigated in an in vitro implantation model...
July 1, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29660000/spermatogonial-behavior-in-marmoset-a-new-generation-their-kinetics-and-niche
#11
A L Caldeira-Brant, L Eras-Garcia, D Alves-Freitas, F R C L Almeida, H Chiarini-Garcia
STUDY QUESTION: Could a more detailed evaluation of marmoset spermatogonial morphology, kinetics and niches using high-resolution light microscopy (HRLM) lead to new findings? SUMMARY ANSWER: Three subtypes of marmoset undifferentiated spermatogonia, which were not evenly distributed in terms of number and position along the basal membrane, and an extra premeiotic cell division not present in humans were identified using HRLM. WHAT IS KNOWN ALREADY: The seminiferous epithelium cycle (SEC) of marmosets is divided into nine stages when based on the acrosome system, and several spermatogenic stages can usually be recognized within the same tubular cross-section...
June 1, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29635518/presence-of-aggregates-of-smooth-endoplasmic-reticulum-in-mii-oocytes-affects-oocyte-competence-molecular-based-evidence
#12
Sara Stigliani, Stefano Moretti, Ida Casciano, Pierandrea Canepa, Valentino Remorgida, Paola Anserini, Paola Scaruffi
STUDY QUESTION: Does the presence of aggregates of smooth endoplasmic reticulum (SERa) impact the transcriptome of human metaphase II (MII) oocytes?. SUMMARY ANSWER: The presence of SERa alters the molecular status of human metaphase II oocytes. WHAT IS KNOWN ALREADY: Oocytes presenting SERa are considered dysmorphic. Oocytes with SERa (SERa+) have been associated with reduced embryological outcome and increased risk of congenital anomalies, although some authors have reported that SERa+ oocytes can lead to healthy newborns...
June 1, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29546342/not-every-sperm-is-sacred-a-perspective-on-male-infertility
#13
Robert John Aitken
This article is a personal perspective on male infertility, a condition that is not only extremely prevalent but also a major reason for couples to resort to ART. The introduction of ICSI as a form of facilitated fertilization had a revolutionary impact on our capacity to treat cases of male infertility associated with severely compromised semen quality. However, the widespread use of this technique is also thought to pose risks in terms of the incidence of miscarriage, the health and wellbeing of the offspring and perpetuation of the infertile phenotype into future generations...
June 1, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29538679/advanced-glycation-end-products-alter-steroidogenic-gene-expression-by-granulosa-cells-an-effect-partially-reversible-by-vitamin-d
#14
Z Merhi, E Buyuk, M J Cipolla
STUDY QUESTION: Does vitamin D attenuate the adverse effects of advanced glycation end products (AGEs) on steroidogenesis by human granulosa cells (GCs)? SUMMARY ANSWER: AGEs alter the expression of genes important in steroidogenesis while 1,25-dihydroxyvitamin D3 (vit D3) in vitro attenuates some of the actions of AGEs on steroidogenic gene expression, possibly by downregulating the expression of the pro-inflammatory cell membrane receptor for AGEs (RAGE). WHAT IS KNOWN ALREADY: Vitamin D attenuates the pro-inflammatory effects of AGEs in non-ovarian tissues...
June 1, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29538677/critical-role-of-mtor-ppar%C3%AE-and-ppar%C3%AE-signaling-in-regulating-early-pregnancy-decidual-function-embryo-viability-and-feto-placental-growth
#15
Sabrina L Roberti, Romina Higa, Verónica White, Theresa L Powell, Thomas Jansson, Alicia Jawerbaum
STUDY QUESTION: What are the consequences of inhibiting mTOR, the mechanistic target of rapamycin (mTOR), and the peroxisome proliferator activated receptor gamma (PPARγ) and PPARδ pathways in the early post-implantation period on decidual function, embryo viability and feto-placental growth in the rat? SUMMARY ANSWER: mTOR inhibition from Days 7 to 9 of pregnancy in rats caused decidual PPARγ and PPARδ upregulation on Day 9 of pregnancy and resulted in embryo resorption by Day 14 of pregnancy...
June 1, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29660008/exosomal-mir-214-from-endometrial-stromal-cells-inhibits-endometriosis-fibrosis
#16
Di Wu, Pan Lu, Xue Mi, Jinwei Miao
STUDY QUESTION: Is it possible to improve fibrosis in endometriosis by microRNA-214 delivery in exosomes? SUMMARY ANSWER: Upregulation of miR-214 may inhibit fibrogenesis and its delivery by exosomes derived from ectopic endometrial stromal cells, offers an alternative therapeutic approach for endometriosis fibrosis. WHAT IS KNOWN ALREADY: Fibrosis is the primary pathological feature of endometriosis. MiR-214 plays an important role in fibrotic disease...
April 11, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29534204/is-8-o2-more-normoxic-than-21-o2-for-long-term-in-vitro-cultures-of-human-primary-term-cytotrophoblasts
#17
C L Depoix, F Haegeman, F Debiève, C Hubinont
STUDY QUESTION: Is 8% O2 a better percentage of atmospheric oxygen for long-term cultures of human primary term cytotrophoblasts than the conventional 21% O2 traditionally used in cell culture? SUMMARY ANSWER: Human primary term cytotrophoblasts are able to differentiate into syncytiotrophoblasts under both atmospheric oxygen levels. WHAT IS KNOWN ALREADY: Cell culture is traditionally done under 21% O2, which is equal to a pO2 of ~160 mm Hg...
April 1, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29528451/raman-micro-spectroscopy-analysis-of-different-sperm-regions-a-species-comparison
#18
S Amaral, R Da Costa, F Wübbeling, K Redmann, S Schlatt
STUDY QUESTION: Is Raman micro-spectroscopy a valid approach to assess the biochemical hallmarks of sperm regions (head, midpiece and tail) in four different species? SUMMARY ANSWER: Non-invasive Raman micro-spectroscopy provides spectral patterns enabling the biochemical characterization of the three sperm regions in the four species, revealing however high similarities for each region among species. WHAT IS KNOWN ALREADY: Raman micro-spectroscopy has been described as an innovative method to assess sperm features having the potential to be used as a non-invasive selection tool...
April 1, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29471503/the-role-of-the-reprogramming-method-and-pluripotency-state-in-gamete-differentiation-from-patient-specific-human-pluripotent-stem-cells
#19
S Mishra, E Kacin, P Stamatiadis, S Franck, M Van der Jeught, H Mertes, G Pennings, P De Sutter, K Sermon, B Heindryckx, M Geens
The derivation of gametes from patient-specific pluripotent stem cells may provide new perspectives for genetic parenthood for patients currently facing sterility. We use current data to assess the gamete differentiation potential of patient-specific pluripotent stem cells and to determine which reprogramming strategy holds the greatest promise for future clinical applications. First, we compare the two best established somatic cell reprogramming strategies: the production of induced pluripotent stem cells (iPSC) and somatic cell nuclear transfer followed by embryonic stem cell derivation (SCNT-ESC)...
April 1, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29438534/both-in-vivo-fsh-depletion-and-follicular-exposure-to-gonadotrophin-releasing-hormone-analogues-in-vitro-are-not-effective-to-prevent-follicular-depletion-during-chemotherapy-in-mice
#20
F Horicks, G Van Den Steen, C Gervy, H J Clarke, I Demeestere
STUDY QUESTION: Does fertility preservation using gonadotrophin-releasing hormone (GnRH) analogues during chemotherapy act through a direct effect on the ovary or through inhibition of FSH secretion? SUMMARY ANSWER: The absence of FSH in vivo and the direct exposition of ovarian follicles to GnRH analogues in vitro did not prevent chemotherapy-induced ovarian damage. WHAT IS KNOWN ALREADY: The potential mechanisms of action of GnRH analogues in protecting ovaries against chemotherapy damage remain poorly understood...
April 1, 2018: Molecular Human Reproduction
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