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Trophoblast

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https://www.readbyqxmd.com/read/28103512/protein-o-fucosyltransferase-1-promotes-trophoblast-cell-proliferation-through-activation-of-mapk-and-pi3k-akt-signaling-pathways
#1
Chang Liu, Xiaohua Liang, Jiao Wang, Qin Zheng, Yue Zhao, Muhammad Noman Khan, Shuai Liu, Qiu Yan
Protein O-fucosylation is an important glycosylation modification and plays an important role in embryonic development. Protein O-fucosyltransferase 1 (poFUT1) is an essential enzyme that catalyzes the synthesis of protein O-fucosylation. Our previous studies showed that poFUT1 promoted trophoblast cell migration and invasion at the fetal-maternal interface, but the role of poFUT1 in trophoblast cells proliferation remains unclear. Here, immunohistochemistry data showed that poFUT1 and PCNA levels were decreased in abortion patient's trophoblasts compared with women with normal pregnancies...
January 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28102332/dynamic-modeling-of-uteroplacental-blood-flow-in-iugr-indicates-vortices-and-elevated-pressure-in-the-intervillous-space-a-pilot-study
#2
Christian J Roth, Eva Haeussner, Tanja Ruebelmann, Franz V Koch, Christoph Schmitz, Hans-Georg Frank, Wolfgang A Wall
Ischemic placental disease is a concept that links intrauterine growth retardation (IUGR) and preeclampsia (PE) back to insufficient remodeling of uterine spiral arteries. The rheological consequences of insufficient remodeling of uterine spiral arteries were hypothesized to mediate the considerably later manifestation of obstetric disease. However, the micro-rheology in the intervillous space (IVS) cannot be examined clinically and rheological animal models of the human IVS do not exist. Thus, an in silico approach was implemented to provide in vivo inaccessible data...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28098860/chondroitin-sulfate-proteoglycan-protein-is-stimulated-by-interleukin%C3%A2-11-and-promotes-endometrial-epithelial-cancer-cell-proliferation-and-migration
#3
Amy Winship, Michelle Van Sinderen, Ariella Heffernan-Marks, Eva Dimitriadis
Endometrial cancer is the most common gynecological cancer. We identified interleukin 11 (IL11) as a critical mediator of endometrial tumourigenesis and demonstrated that IL11 regulates chondroitin sulfate proteoglycan (CSPG4) in human placental trophoblasts. CSPG4 is a cell membrane protein overexpressed in numerous human cancers, although its role in endometrial cancer has not been investigated. We examined CSPG4 expression and localization in primary human type I endometrioid grade (G) 1-3 tumours by qPCR and immunohistochemistry and determined whether IL11 stimulated CSPG4...
January 13, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28097431/placental-dapk1-and-autophagy-marker-lc3b-ii-are-dysregulated-by-tnf-%C3%AE-in-a-gestational-age-dependent-manner
#4
Andreas Prokesch, Astrid Blaschitz, Tamara Bauer, Gerit Moser, Ursula Hiden, Julianna Zadora, Ralf Dechend, Florian Herse, Martin Gauster
Autophagy, a cell-survival process responsible for degradation of protein aggregates and damaged organelles, is increasingly recognized as another mechanism essential for human placentation. A substantial body of experiments suggests inflammation and oxidative stress as the underlying stimuli for altered placental autophagy, giving rise to placenta dysfunction and pregnancy pathologies. Here, the hypothesis is tested whether or not pro-inflammatory cytokines interleukin (IL)-6 and tumor necrosis factor (TNF)-α are able to influence the expression profile of autophagy genes in human first-trimester villous placenta...
January 17, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28095355/immune-regulatory-network-in-successful-pregnancy-and-reproductive-failures
#5
REVIEW
Mahnaz Ghaebi, Mohammad Nouri, Aliyeh Ghasemzadeh, Laya Farzadi, Farhad Jadidi-Niaragh, Majid Ahmadi, Mehdi Yousefi
Maternal immune system must tolerate semiallogenic fetus to establish and maintain a successful pregnancy. Despite the existence of several strategies of trophoblast to avoid recognition by maternal leukocytes, maternal immune system may react against paternal alloantigenes. Leukocytes are important components in decidua. Not only T helper (Th)1/Th2 balance, but also regulatory T (Treg) cells play an important role in pregnancy. Although the frequency of Tregs is elevated during normal pregnancies, their frequency and function are reduced in reproductive defects such as recurrent miscarriage and preeclampsia...
January 14, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28093002/predictive-value-of-some-hematological-parameters-for-non-invasive-and-invasive-mole-pregnancies
#6
Cigdem Yayla Abıde, Enis Ozkaya, İlter Yenidede, Ahmet Eser, Evrim Bostancı Ergen, Ahter Tanay Tayyar, Mehmet Baki Senturk, Ates Karateke
AIM: The aim of this study was to discriminate mole pregnancies and invasive forms among cases with first trimester vaginal bleeding by the utilization of some complete blood count parameters conjunct to sonographic findings and beta human chorionic gonadotropin concentration. MATERIALS AND METHODS: Consecutive 257 cases with histopathologically confirmed mole pregnancies and 199 women without mole pregnancy presented with first trimester vaginal bleeding who admitted to Zeynep Kamil Women and Children's Health Training Hospital between january 2012 to january 2016 were included in this cross sectional study...
January 17, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28090465/does-intrauterine-injection-of-low-molecular-weight-heparin-improve-the-clinical-pregnancy-rate-in-intracytoplasmic-sperm-injection
#7
Ahmed Mohamed Kamel, Yahia El-Faissal, Mona Aboulghar, Ragaa Mansour, Gamal I Serour, Mohamed Aboulghar
OBJECTIVE: Heparin can modulate proteins, and influence processes involved in implantation and trophoblastic development. This study aimed to assess the improvement of clinical pregnancy and implantation rates after local intrauterine injection of low-molecular-weight heparin (LMWH) in patients undergoing intracytoplasmic sperm injection (ICSI). METHODS: A randomised case/control design was followed in women scheduled for ICSI. The study arm was injected with intrauterine LMWH during mock embryo transfer immediately following the ovum pickup procedure, while the control arm was given an intrauterine injection with a similar volume of tissue culture media...
December 2016: Clinical and Experimental Reproductive Medicine
https://www.readbyqxmd.com/read/28089907/adenosine-and-preeclampsia
#8
REVIEW
Rocío Salsoso, Marcelo Farías, Jaime Gutiérrez, Fabián Pardo, Delia I Chiarello, Fernando Toledo, Andrea Leiva, Alfonso Mate, Carmen M Vázquez, Luis Sobrevia
Adenosine is an endogenous nucleoside with pleiotropic effects in different physiological processes including circulation, renal blood flow, immune function, or glucose homeostasis. Changes in adenosine membrane transporters, adenosine receptors, and corresponding intracellular signalling network associate with development of pathologies of pregnancy, including preeclampsia. Preeclampsia is a cause of maternal and perinatal morbidity and mortality affecting 3-5% of pregnancies. Since the proposed mechanisms of preeclampsia development include adenosine-dependent biological effects, adenosine membrane transporters and receptors, and the associated signalling mechanisms might play a role in the pathophysiology of preeclampsia...
January 12, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28088588/dengue-infection-in-pregnancy-and-its-impact-on-the-placenta
#9
Christiane Fernandes Ribeiro, Vânia Glória Silami Lopes, Patrícia Brasil, Andrea Rodrigues Cordovil Pires, Roger Rohloff, Rita Maria Ribeiro Nogueira
A histopathological and immunohistochemical study was conducted in placental tissues and retained products of conception from 24 patients with confirmed dengue infection during pregnancy. The immunohistochemical assay was positive for dengue virus in 19 placental and three ovular remnants analyzed. The light microscopic findings were signs of hypoxia, choriodeciduitis, deciduitis and intervillositis and the viral antigens were found in cytoplasmic of the trophoblast, villous stroma and decidua.Our results suggest that immunohistochemistry could be used as a laboratory confirmation method for dengue in pregnant women, especially in endemic areas when embedded material is the only material available...
January 11, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28087411/aspirin-prevents-tnf-%C3%AE-induced-endothelial-cell-dysfunction-by-regulating-the-nf-%C3%AE%C2%BAb-dependent-mir-155-enos-pathway-role-of-a-mir-155-enos-axis-in-preeclampsia
#10
Joohwan Kim, Kyu-Sun Lee, Ji-Hee Kim, Dong-Keon Lee, Minsik Park, Seunghwan Choi, Wonjin Park, Suji Kim, Yoon Kyoung Choi, Jong Yun Hwang, Jongseon Choe, Moo-Ho Won, Dooil Jeoung, Hansoo Lee, Sungwoo Ryoo, Kwon-Soo Ha, Young-Guen Kwon, Young-Myeong Kim
Preeclampsia is an inflammatory disease with endothelial cell dysfunction that occurs via decreased endothelial nitric oxide synthase/nitric oxide (eNOS/NO) activity. Aspirin reduces the incidence of hypertensive pregnancy complications. However, the underlying mechanism has not been clearly explained. Here, we found that tumor necrosis factor (TNF)-α, microRNA (miR)-155, and eNOS levels as well as endothelial redox phenotype were differentially regulated in preeclamptic patients, implying the involvement of TNF-α- and redox signal-mediated miR-155 biogenesis and eNOS downregulation in the pathogenesis of preeclampsia...
January 10, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28087122/human-trophoblast-stem-cells-real-or-not-real
#11
Ching-Wen Chang, Mana M Parast
Abnormal trophoblast differentiation is the root cause of many placenta-based pregnancy complications, including preeclampsia and fetal growth restriction. Human trophoblast differentiation is difficult to study due to the lack of a stem cell model. Such a multipotent "trophoblast stem" (TS) cell, with the ability to differentiate into all trophoblast subtypes, has been derived from mouse blastocysts, but attempts to derive similar human cells have failed. We consider here several possibilities for the TS cell niche in the human placenta...
January 5, 2017: Placenta
https://www.readbyqxmd.com/read/28081266/human-extravillous-trophoblasts-penetrate-decidual-veins-and-lymphatics-before-remodeling-spiral-arteries-during-early-pregnancy
#12
Nannan He, Liesbeth van Iperen, Danielle de Jong, Karoly Szuhai, Frans M Helmerhorst, Lucette A J van der Westerlaken, Susana M Chuva de Sousa Lopes
In humans, the defective invasion of the maternal endometrium by fetal extravillous trophoblasts (EVTs) can lead to insufficient perfusion of the placenta, resulting in pregnancy complications that can put both mother and baby at risk. To study the invasion of maternal endometrium between (W)5.5-12 weeks of gestation by EVTs, we combined fluorescence in situ hybridization, immunofluorescence and immunohistochemistry to determine the presence of (male) EVTs in the vasculature of the maternal decidua. We observed that interstitial mononuclear EVTs directly entered decidual veins and lymphatics from W5...
2017: PloS One
https://www.readbyqxmd.com/read/28079767/primary-gastric-choriocarcinoma-presenting-as-a-pregnancy-of-unknown-location
#13
Alyssa Larish, Amanika Kumar, Sarah Kerr, Carrie Langstraat
BACKGROUND: Pregnancy of unknown location presents a diagnostic challenge, in rare occasions leading to the diagnosis of malignancy. We describe a case of β-hCG-secreting nongestational primary gastric choriocarcinoma presenting as a pregnancy of unknown location. CASE: A 37-year-old woman, gravida 4 para 3013, presented with several days of vaginal bleeding and rising β-hCG level without ultrasound localization of pregnancy. The diagnosis of pregnancy of unknown location was made and methotrexate administered at a β-hCG level of 7,779 milli-international units/mL...
January 9, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28077780/exposure-to-crvi-during-early-pregnancy-increases-oxidative-stress-and-disrupts-the-expression-of-antioxidant-proteins-in-placental-compartments
#14
Sakhila K Banu, Jone A Stanley, Kirthiram K Sivakumar, Robert J Taylor, Joe A Arosh, Robert C Burghardt
Epidemiologic studies document relationships between chromium VI (CrVI) exposure and increased risk of spontaneous abortion, stillbirth, preterm birth, and neonatal death in pregnant women. Environmental contamination with CrVI is a growing problem both in the United States and developing countries. CrVI is widely used in numerous industries. This study was designed to understand the mechanism of CrVI toxicity on placental oxidative stress and antioxidant (AOX) machinery. Pregnant mother rats were treated with or without CrVI (50 ppm K2Cr2O7) through drinking water from gestational day (GD) 9...
November 15, 2016: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28076928/rxr%C3%AE-is-upregulated-in-first-trimester-endometrial-glands-of-spontaneous-abortions-unlike-lxr-and-ppar%C3%AE
#15
J Knabl, A Vattai, R Hüttenbrenner, S Hutter, M Karsten, U Jeschke
Nuclear receptors are necessary for uterine invasion of the trophoblast and therefore important for maintaining a viable pregnancy. The aim of this study was to investigate the expression pattern and frequency of LXR, PPARγ and RXRα under physiological circumstances and in spontaneous abortions in endometrial glands and decidual tissue cells. A total of 28 (14 physiologic pregnancies/14 spontaneous abortion) human pregnancies in first trimester were analysed for expression of the nuclear receptors LXR, RXRα and PPARγ...
November 2, 2016: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/28076513/serum-concentration-of-vascular-endothelial-growth-factor-and-depth-of-trophoblastic-invasion-in-ampullary-ectopic-pregnancy
#16
Fábio Roberto Cabar, Décio Roberto Kamio Teshima, Pedro Paulo Pereira, Leila Antonangelo, Regina Schultz, Rossana Pulcineli Francisco
OBJECTIVE: To evaluate the association between the depth of trophoblastic infiltration and serum vascular endothelial growth factorconcentration in patients with an ampullary pregnancy. METHODS: This prospective cross-sectionalstudy involved 34 patients with an ampullary ectopic pregnancy who underwent salpingectomy between 2012 and 2013. Maternal serum vascular endothelial growth factor concentrations were measured using Luminex technology. Trophoblastic invasion was classified histologically as follows: stage I, limited to the tubal mucosa; stage II, reaching the muscle layer; and stage III,involving the full thickness...
December 1, 2016: Clinics
https://www.readbyqxmd.com/read/28076382/deregulated-expression-of-mitochondrial-proteins-mfn2-and-bcnl3l-in-placentae-from-sheep-somatic-cell-nuclear-transfer-scnt-conceptuses
#17
Marta Czernik, Paola Toschi, Federica Zacchini, Domenico Iuso, Grażyna Ewa Ptak
In various animal species, the main cause of pregnancy loss in conceptuses obtained by somatic cell nuclear transfer (SCNT) are placental abnormalities. Most abnormalities described in SCNT pregnancies (such as placentomegaly, reduced vascularisation, hypoplasia of trophoblastic epithelium) suggest that placental cell degeneration may be triggered by mitochondrial failure. We hypothesized that placental abnormalities of clones obtained by SCNT are related to mitochondrial dysfunction. To test this, early SCNT and control (CTR, from pregnancies obtained by in vitro fertilization) placentae were collected from pregnant ewes (at day 20 and 22 of gestation) and subjected to morphological, mRNA and protein analysis...
2017: PloS One
https://www.readbyqxmd.com/read/28071720/polychlorinated-biphenyls-target-notch-dll-and-vegf-r2-in-the-mouse-placenta-and-human-trophoblast-cell-lines-for-their-anti-angiogenic-effects
#18
Satyan Kalkunte, Zheping Huang, Eliana Lippe, Sunil Kumar, Larry W Robertson, Surendra Sharma
The intrauterine environment is particularly vulnerable to environmental exposures. We previously established a mouse model that provided evidence for pregnancy complications and placental anti-angiogenesis in response to Aroclor 1254 (A-1254), a mixture of polychlorinated biphenyls (PCBs). Importantly, these effects were observed in IL-10(-/-), but not wild type, mice, suggesting that IL-10 deficiency predisposes to pregnancy disruptive effects of environmental toxicants. However, the mechanisms by which PCBs cause anti-angiogenic effects are unclear...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28069758/correction-hepatitis-c-virus-sensing-by-human-trophoblasts-induces-innate-immune-responses-and-recruitment-of-maternal-nk-cells-potential-implications-for-limiting-vertical-transmission
#19
Silvia Giugliano, Margaret G Petroff, Bryce D Warren, Susmita Jasti, Caitlin Linscheid, Ashley Ward, Anita Kramer, Evgenia Dobrinskikh, Melissa A Sheiko, Michael Gale, Lucy Golden-Mason, Virginia D Winn, Hugo R Rosen
No abstract text is available yet for this article.
January 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28069185/combination-of-uterine-natural-killer-cell-immunoglobulin-receptor-haplotype-and-trophoblastic-hla-c-ligand-influences-the-risk-of-pregnancy-loss-a-retrospective-cohort-analysis-of-direct-embryo-genotyping-data-from-euploid-transfers
#20
Scott J Morin, Nathan R Treff, Xin Tao, Richard T Scott, Jason M Franasiak, Caroline R Juneau, Marcy Maguire, Richard T Scott
OBJECTIVE: To compare maternal uterine natural killer cell immunoglobulin receptor (KIR) genotype and haplotype frequencies between patients whose euploid single-embryo transfer resulted in pregnancy loss and those that resulted in delivery and to determine if the risk of pregnancy loss was affected by the HLA-C genotype content in the embryo. DESIGN: Retrospective cohort. SETTING: Academic research center. PATIENT(S): Autologous fresh IVF cycles resulting in positive serum β-hCG during 2009-2014...
January 6, 2017: Fertility and Sterility
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