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Reproductive Sciences

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https://www.readbyqxmd.com/read/30111245/effect-of-a-small-physiological-electric-field-on-angiogenic-activity-in-first-trimester-extravillous-trophoblast-cells
#1
Liyan Ye, Linbo Guan, Ping Fan, Yinghui Liu, Wei Xiong, Rui Liu, Xing Wei, Yue Zhu, Yu Liu, Huai Bai
Electrical stimulation induces significant angiogenesis in vivo. We have shown that electrical stimulation of trophoblast cells has important functions in aspects of angiogenesis. In this study, we investigated the effects of a direct current electrical field on trophoblast angiogenic tube formation. A 6-hour exposure to electric fields ranging from 50 to 150 mV/mm dose dependently increased tube growth and network formation. Additionally, the effect was time dependent, with increased tube formation occurring between 4 and 8 hours, indicating stimulation of trophoblast cell angiogenesis...
August 15, 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/30092744/changes-in-vasodilator-stimulated-phosphoprotein-phosphorylation-profilin-1-and-cofilin-1-in-accreta-and-protection-by-dha
#2
Mehboob Ali, Lynette K Rogers, Kathryn M Heyob, Catalin S Buhimschi, Irina A Buhimschi
Accreta and gestational trophoblastic disease (ie, choriocarcinoma) are placental pathologies characterized by hyperproliferative and invasive trophoblasts. Cellular proliferation, migration, and invasion are heavily controlled by actin-binding protein (ABP)-mediated actin dynamics. The ABP vasodilator-stimulated phosphoprotein (VASP) carries key regulatory role. Profilin-1, cofilin-1, and VASP phosphorylated at Ser157 (pVASP-S157) and Ser239 (pVASP-S239) are ABPs that regulate actin polymerization and stabilization and facilitate cell metastases...
August 9, 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/30092712/induction-of-pyruvate-dehydrogenase-kinase-1-by-hypoxia-alters-cellular-metabolism-and-inhibits-apoptosis-in-endometriotic-stromal-cells
#3
Hsiu-Chi Lee, Shih-Chieh Lin, Meng-Hsing Wu, Shaw-Jenq Tsai
Endometriosis is a common gynecological disease, which is defined as the growth of endometrial tissues outside the uterine cavity. It often causes dysmenorrhea, dyspareunia, chronic pelvic pain, and infertility in reproductive-age women. However, the pathogenesis of endometriosis remains largely unclear. Since our previous study revealed that ectopic endometriotic stromal cells experience greater hypoxic stress than their eutopic counterparts, we aim to investigate whether the metabolic properties are changed in the ectopic endometriotic stromal cell when compared to its eutopic counterpart...
August 9, 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/30081728/hmgb3-induces-the-differentiation-of-uterine-stromal-cells-through-targeting-ptn
#4
Kai Wang, Yun-Hou Yin, Zhan-Qing Yang, Hai-Fan Yu, Yu-Si Wang, Bin Guo, Zhan-Peng Yue
Uterine decidualization is crucial for placenta formation and pregnancy maintenance. Although previous studies have reported that high mobility group box 3 (Hmgb3) is involved in the regulation of cellular proliferation and differentiation, little is known regarding its physiological role in uterine decidualization. Here, in situ hybridization result exhibited a dynamic expression pattern of Hmgb3 messenger RNA (mRNA) during early gestation, and it was mainly localized to the decidua on days 6 to 8 of gestation...
August 6, 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/30081718/potential-marker-pathways-in-the-endometrium-that-may-cause-recurrent-implantation-failure
#5
Ercan Bastu, Irem Demiral, Tuba Gunel, Ege Ulgen, Ece Gumusoglu, Mohammad Kazem Hosseini, Ugur Sezerman, Faruk Buyru, John Yeh
The aim of this prospective cohort study was to identify altered biologic processes in the endometrium that may be potential markers of receptive endometrium in patients with repeated implantation failure (RIF) as compared with fertile controls. The study was conducted in a university-affiliated in vitro fertilization (IVF) gynecology clinic and molecular biology and genetics laboratory. Healthy fertile controls (n = 24) and patients with RIF (n = 24) were recruited. Window of implantation gene profiling associated with RIF was performed...
August 6, 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29642799/placental-defects-an-epigenetic-perspective
#6
Sharvari S Deshpande, Nafisa H Balasinor
Placenta, the first organ to be formed during gestation, plays a crucial role in intrauterine regulation of fetal growth and is involved in several functions during fetal development such as exchange of nutrients, wastes, and gases; protection against maternal immune rejection; and various metabolic and endocrine functions. Several studies have shown the regulation of epigenetic factors and the phenomenon of genomic imprinting in placentation and embryogenesis. Any gain or loss of imprint marks in the placenta has been shown to associate with severe placental defects which in turn affect both the mother and the growing fetus and can have long-term effects during adulthood...
August 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29587613/g-protein-coupled-receptor-cxcr7-is-overexpressed-in-human-and-murine-endometriosis
#7
Nicola Pluchino, Ramanaiah Mamillapalli, Irene Moridi, Reshef Tal, Hugh S Taylor
Endometriosis is a chronic inflammatory disease. Dysfunctional regulation of chemokines and chemokine receptors is a crucial aspect of endometriosis pathogenesis. Chemokine G-protein-coupled receptors (GPCRs) are important drug targets that regulate inflammation and immunity. Recently, CXCR7, a C-X-C motif containing GPCR, has been identified as a receptor for chemokine ligand CXCL12, one of the best characterized chemokines for cell trafficking, angiogenesis, and cell proliferation in cancer and inflammation...
August 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29490568/the-relationship-of-circular-rnas-with-ovarian-endometriosis
#8
Xiaoxuan Xu, Shuang-Zheng Jia, Yi Dai, Jun-Ji Zhang, Xiaoyan Li, Jinghua Shi, Jinhua Leng, Jinghe Lang
Circular RNAs (circRNAs) are involved in the pathogenesis of many diseases, although their expression pattern and role in endometriosis remains unknown. Therefore, here, we profiled the expression patterns of circRNAs in ovarian ectopic and paired eutopic endometria as well as constructed a circRNA-miRNA-mRNA network. Circular RNA and messenger RNA (mRNA) expression profiles were assessed by a microarray analysis in 4 patients. Quantitative real-time polymerase chain reaction (qRT-PCR) validation of 8 circRNAs and mRNAs was conducted in another 37 patients...
August 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29463188/progesterone-inhibits-apoptosis-in-fetal-membranes-by-altering-expression-of-both-pro-and-antiapoptotic-proteins
#9
Yuguang Wang, Vikki M Abrahams, Guoyang Luo, Nicholas G Norwitz, Victoria V Snegovskikh, Shu-Wing Ng, Errol R Norwitz
OBJECTIVE: Progesterone supplementation prevents preterm birth (PTB) in some high-risk women, but its mechanism of action is unknown. One-third of PTB is associated with preterm premature rupture of membranes (PPROMs). We have previously shown that progesterone inhibits basal and Tumor Necrosis Factor (TNF) α-induced apoptosis in an explant model of human fetal membranes. This study investigates the molecular mechanisms responsible for progesterone-mediated inhibition of apoptosis in fetal membranes...
August 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29187052/mesenchymal-stem-cell-therapy-prevents-abortion-in-cba-j-%C3%A3-dba-2-mating
#10
Bizhan Sadighi-Moghaddam, Amir Salek Farrokhi, Hassan Namdar Ahmadabad, Mehdi Barati, Seyed Mohammad Moazzeni
Immunological disorders are among the main causes of recurrent spontaneous abortions (RSAs). Mesenchymal stem cells (MSCs) have been shown to modulate various aspects of immune responses. It seems that MSCs may improve the immunological conditions in immune-mediated RSA. The aim of this study is the reduction of resorption in RSA mouse model through MSCs therapy. The adipose-derived MSCs were administered intraperitoneal to pregnant CBA/J mice on day 4.5 of gestation in abortion-prone matting. On day 13.5 of pregnancy, abortion rates were calculated and transforming growth factor-β (TGF-β), interleukin 10 (IL-10), interferon γ (IFN-γ), and tumor necrosis factor α (TNF-α) gene expression in deciduas were evaluated by real-time polymerase chain reaction (PCR)...
August 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29153060/using-pyruvate-kinase-as-a-predictor-for-patient-with-endometrial-cancer-having-complex-hyperplasia-with-atypia-to-prevent-hysterectomy-and-preserve-fertility-retrospective-immunohistochemical-study
#11
Susan Hosseini Nasab, Neda Jooya, Aryan Esmaeili, Neda Zarrin Khameh, Concepcion Diaz-Arrastia, Mazdak Momeni
OBJECTIVES: To explore whether the metabolic switches proceed or succeed the histological changes in precancerous lesions. To validate pyruvate kinase isoform 1 (PKM1) and pyruvate kinase isoform 2 (PKM2) as a histological biomarker to predict the progression of endometrial hyperplasia into invasive cancer status. METHODS: The records of 56 patients with a primary diagnosis of complex hyperplasia with atypia after endometrial biopsy were selected and analyzed retrospectively...
August 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29141509/relative-morphokinetics-assessed-by-time-lapse-imaging-are-altered-in-embryos-from-patients-with-endometriosis
#12
Alexander Freis, Jens Erik Dietrich, Moritz Binder, Verena Holschbach, Thomas Strowitzki, Ariane Germeyer
INTRODUCTION: Time-lapse technology allows almost continuous noninvasive assessment of embryonic development. It was shown previously that relative kinetics defining cleavage synchronicity are better predictors of blastocyst quality than absolute time points. This study aims to compare relative kinetics in embryos from patients with and without endometriosis. METHODS: Time-lapse data were collected retrospectively from 596 patients undergoing infertility treatment for in vitro fertilization from January 2011 to July 2016...
August 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29141508/anti-m%C3%A3-llerian-hormone-amh-may-stall-ovarian-cortex-function-through-modulation-of-hormone-receptors-other-than-the-amh-receptor
#13
Laura Detti, Nicole M Fletcher, Ghassan M Saed, Irene Peregrin-Alvarez, Rebecca A Uhlmann
OBJECTIVE: To test whether recombinant anti-Müllerian hormone (AMH) can inhibit ovarian cortex function by modulating the expression of other hormone receptors. MATERIALS AND METHODS: Pilot experimental study with ovarian cortex obtained from 5 patients. Immediately after explant, the ovarian cortex specimens were divided into 5 equal fragments. One fragment was flash-frozen (uncultured) and 4 were incubated for 48 hours at 37°C in a pH-adjusted gamete buffer medium with increasing AMH concentrations of 0, 5, 25, and 50 ng/mL...
August 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29113583/aberrant-akt-activation-during-implantation-window-in-infertile-women-with-intramural-uterine-fibroids
#14
Annu Makker, Madhu Mati Goel, Dipti Nigam, Abbas Ali Mahdi, Vinita Das, Anjoo Agarwal, Amita Pandey, Abnish Gautam
The objective of the study was to examine the expression and cellular distribution of key signaling components of the phosphatidylinositol-3-kinase (PI3K)/Phosphatase and Tensin Homolog Deleted on Chromosome Ten (PTEN)/Protein Kinase B (PKB/Akt) pathway during the window of implantation in infertile women with noncavity-distorting intramural uterine fibroids (n = 21) as compared to fertile controls (n = 15). Relative gene expression analysis of PIK3CA, PTEN, Akt1, and Akt2 genes in midluteal endometrial biopsies was performed by real-time polymerase chain reaction...
August 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29113582/the-effects-of-magnesium-sulfate-on-the-inflammatory-response-of-placentas-perfused-with-lipopolysaccharide-using-the-ex-vivo-dual-perfused-human-single-cotyledon-model
#15
Michal Kovo, Noa Mevorach-Zussman, Nizar Khatib, Yuval Ginsberg, Michael Divon, Zeev Weiner, Jacob Bar, Ron Beloosesky
OBJECTIVES: Multiple mechanisms have been proposed for the neuroprotective effects of magnesium sulfate (MgSO4 ). We aimed to examine the effects of lipopolysaccharide (LPS) and MgSO4 on the placental expression of nuclear factor κ light chain enhancer of activated B cells (NF-κB), interleukin (IL) 6, adrenocorticotropic hormone (ACTH), and nitric oxide synthase (NOS); all known to participate in the inflammatory cascade. METHODS: Placentas were obtained and selected cotyledons cannulated and dually perfused ex vivo...
August 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29113581/comparison-of-follicle-isolation-methods-for-mouse-ovarian-follicle-culture-in-vitro
#16
Eun Jung Kim, Jaewang Lee, Hye Won Youm, Seul Ki Kim, Jung Ryeol Lee, Chang Suk Suh, Seok Hyun Kim
Ovarian follicle in vitro culture is a promising fertility preservation option to avoid risk of reintroduction of malignant cells. The objective of this study is to compare 4 different follicle isolation methods from ovarian tissue and evaluate the effect of follicle isolation on further in vitro follicle culture and oocyte competency. Mouse ovaries were dissected and randomly divided into 4 groups according to follicle isolation method: mechanical (MCH) isolation, mincing (MNC) isolation, enzymatically digestion using collagenase (COL), and enzymatically digestion using liberase (LIB)...
August 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29113580/prominin-2-prevents-the-formation-of-caveolae-in-normal-and-ovarian-hyperstimulated-pregnancy
#17
Samson N Dowland, Romanthi J Madawala, Connie E Poon, Laura A Lindsay, Christopher R Murphy
During early pregnancy, uterine epithelial cells (UECs) become less adherent to the underlying basal lamina and are subsequently removed so the blastocyst can invade the underlying stroma. This process involves the removal of focal adhesions from the basal plasma membrane of UECs. These focal adhesions are thought to be internalized by caveolae, which significantly increase in abundance at the time of blastocyst implantation. A recent in vitro study indicated that prominin-2 prevents the formation of caveolae by sequestering membrane cholesterol...
August 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29108468/senescence-and-telomere-homeostasis-might-be-involved-in-placenta-percreta-preliminary-investigation
#18
Keren Tzadikevitch Geffen, Hilah Gal, Ifat Vainer, Ofer Markovitch, Aliza Amiel, Valery Krizhanovsky, Tal Biron-Shental
OBJECTIVE: Placenta percreta (PP) is an abnormal condition of trophoblast maturation and terminal differentiation through the uterine wall. We opted to study telomere homeostasis and senescence expression in trophoblasts from PP, the most severe subgroup of placenta accreta. STUDY DESIGN: Paraffin-embedded placental biopsies from pregnancies with percreta and normal placentation, matched by gestational age at delivery, were assessed for telomere length, aggregates, and senescence-associated heterochromatin foci using quantitative fluorescence in situ hybridization...
August 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29105595/host-defense-peptide-expression-in-human-cervical-cells-and-regulation-by-1-25-dihydroxyvitamin-d3-in-the-presence-of-cytokines-and-bacterial-endotoxin
#19
Evonne C Chin-Smith, Natasha L Hezelgrave, Rachel M Tribe
Host defense peptides (HDPs) in the pregnant female reproductive tract provide protection against infection. The relationship between HDPs and infection/inflammation is poorly understood. Therefore, we investigated the regulation of HDPs by 1α, 25-dihydroxyvitamin D3 (1,25-(OH)2) in the presence/absence of infectious/inflammatory agents. Endocervical epithelial cells (END1/E6E7, n = 6) were exposed to 1,25-(OH)2, calcipotriol, interleukin 1β (IL-1β), granulate-macrophage colony-stimulating factor (GM-GSF), and lipopolysaccharide (LPS)...
August 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29096585/increased-expression-of-ndrg3-in-mouse-uterus-during-embryo-implantation-and-in-mouse-endometrial-stromal-cells-during-in-vitro-decidualization
#20
Qian Yang, Xuan Zhang, Yan Shi, Ya-Ping He, Zhao-Gui Sun, Hui-Juan Shi, Jian Wang
Decidualization is an indispensable event in the embryo implantation process, but its underlying molecular mechanisms remain elusive. In this study, we showed that in mice, the uterine expression of N-myc downstream-regulated gene 3 (NDRG3), a member of the α/β hydrolase superfamily, was induced by estradiol and progesterone. During the embryo implantation process, uterine Ndrg3 expression was remarkably upregulated, and its expression level at implantation sites (IS) was significantly higher than that at inter-IS...
August 2018: Reproductive Sciences
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