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Placenta implantation

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https://www.readbyqxmd.com/read/29777276/prophylactic-placement-of-internal-iliac-balloons-in-patients-with-abnormal-placental-implantation-maternal-and-foetal-outcomes
#1
Patrick J Nicholson, Owen O'Connor, John Buckley, Liam D Spence, Richard A Greene, David J Tuite
PURPOSE: To report on outcomes following the use of prophylactic internal iliac artery occlusion balloons in patients with abnormal placental implantation. METHODS: A retrospective analysis was undertaken of patients with abnormal placental implantation who underwent prophylactic iliac balloon placement prior to delivery in a University Maternity Hospital. Various clinical and technical factors were analysed, including technical success of balloon placement, blood loss and number of blood units transfused, duration of surgery, length of stay, hysterectomy rates, complications related to the balloon insertion, foetal pH and infant Apgar scores...
May 18, 2018: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/29760942/induction-of-chondrogenesis-of-human-placenta-derived-mesenchymal-stem-cells-via-heparin-grafted-human-fibroblast-derived-matrix
#2
Yong Kwan Noh, Ping Du, Avelino Dos Santos Da Costa, Kwideok Park
Background: Formation of mature and functional articular cartilage is still challenging in cartilage tissue engineering. This study investigates the potential of using heparin-grafted decellularized extracellular matrix (ECM) as a novel growth factor delivery platform towards human placenta-derived mesenchymal stem cells (hPMSCs) chondrogenic differentiation. Human fibroblast-derived extracellular matrix (hFDM) is naturally obtained from in vitro-cultured human lung fibroblasts via a mild decellularization process...
2018: Biomaterials Research
https://www.readbyqxmd.com/read/29757275/isolation-of-primary-human-decidual-cells-from-the-fetal-membranes-of-term-placentae
#3
Tali Farine, Michael Parsons, Stephen Lye, Oksana Shynlova
The decidua, also known as the pregnant endometrium, is a critically important reproductive tissue. Decidual cells, comprised mainly of decidualized stromal cells and immune cells, are responsible for the secretion of hormonal and inflammatory factors which are critical for successful blastocyst implantation, placental development and play a role in the initiation of labor at term and preterm. Many pregnancy complications can arise from perturbations of a fine balance of different cell populations comprising decidua...
April 30, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29734084/association-between-early-%C3%AE-hcg-kinetics-blastocyst-morphology-and-pregnancy-outcome-in-a-single-blastocyst-transfer-program
#4
Jean-Maxime Girard, Mathilde Simorre, Florence Leperlier, Arnaud Reignier, Tiphaine Lefebvre, Paul Barrière, Thomas Fréour
OBJECTIVE(S): Beta human chorionic gonadotrophin (β-hCG) is secreted by placenta and detectable in maternal serum a few days after embryo implantation. The evolution of β-hCG serum levels is commonly used to confirm early pregnancy and differentiate normal pregnancies from others, either in spontaneous pregnancies or after IVF. However, little is known on the eventual link between blastocyst quality in IVF, pregnancy outcome, and βhCG kinetics. The objective was to evaluate the association between early βhCG rise, blastocyst morphology and pregnancy evolution in a single-blastocyst transfer program STUDY DESIGN: This retrospective cohort study was conducted in a University-affiliated IVF center in 441 couples undergoing 455 single blastocyst transfer cycles leading to a positive pregnancy test 12 days afterwards...
April 30, 2018: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29723063/placenta-specific-1-regulates-oocyte-meiosis-and-fertilization-through-furin
#5
Li-Ya Shi, Yang Ma, Gang-Yi Zhu, Jin-Wei Liu, Chun-Xiang Zhou, Liang-Jian Chen, Yang Wang, Rui-Chao Li, Zhi-Xia Yang, Dong Zhang
Placenta-specific 1 (Plac1) has been found to be essential for placentation, and abnormal Plac1 expression and distribution is highly correlated with preeclampsia and implantation failure; however, its function in mammalian oocytes has not been elucidated. Here, we report that Plac1 was more prominent in mouse oocytes and enriched at the membrane region throughout meiosis. On the one hand, Plac1 knockdown severely disrupted microvillus organization; however, on the other hand, Plac1 significantly decreased oocyte maturation and increased aneuploidy, consequently disrupting normal fertilization...
May 3, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29720634/blastocyst-like-structures-generated-solely-from-stem-cells
#6
Nicolas C Rivron, Javier Frias-Aldeguer, Erik J Vrij, Jean-Charles Boisset, Jeroen Korving, Judith Vivié, Roman K Truckenmüller, Alexander van Oudenaarden, Clemens A van Blitterswijk, Niels Geijsen
The blastocyst (the early mammalian embryo) forms all embryonic and extra-embryonic tissues, including the placenta. It consists of a spherical thin-walled layer, known as the trophectoderm, that surrounds a fluid-filled cavity sheltering the embryonic cells 1 . From mouse blastocysts, it is possible to derive both trophoblast 2 and embryonic stem-cell lines 3 , which are in vitro analogues of the trophectoderm and embryonic compartments, respectively. Here we report that trophoblast and embryonic stem cells cooperate in vitro to form structures that morphologically and transcriptionally resemble embryonic day 3...
May 2018: Nature
https://www.readbyqxmd.com/read/29718653/silk-sponges-ornamented-with-placenta-derived-extracellular-matrix-augments-full-thickness-cutaneous-wound-healing-by-stimulating-neovascularization-and-cellular-migration
#7
Arun Prabhu Rameshbabu, Kamakshi Bankoti, Sayanti Datta, Elavarasan Subramani, Anupam Apoorva, Paulomi Ghosh, Priti Prasanna Maity, Padmavati Manchikanti, Koel Chaudhury, Santanu Dhara
Regeneration of full-thickness wound without scar formation is a multifaceted process which depends on in situ dynamic interactions between the tissue-engineered skin substitutes and newly formed reparative tissue. However, the majority of the tissue-engineered skin substitutes used so far in full-thickness wound healing cannot mimic the natural extracellular matrix (ECM) complexity and thus are incapable of providing a suitable niche for endogenous tissue repair. Herein, we demonstrated a simple approach to fabricate porous Hybrid Extracellular Matrix Sponges (HEMS) using Placental Extracellular Matrix (pECM) and Silk Fibroin (SF) for full-thickness wound healing...
May 2, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29700097/prostaglandin-e2-receptor-3-ep3-signaling-is-induced-in-placentas-with-unexplained-recurrent-pregnancy-losses-urpl
#8
Yao Ye, Aurelia Vattai, Nina Ditsch, Christina Kuhn, Martina Rahmeh, Sven Mahner, Myriam Ripphahn, Roland Immler, Markus Sperandio, Udo Jeschke, Viktoria von Schoenfeldt
Although an inflammatory microenvironment is required for successful implantation, an inflammatory overreaction is one of the causes of unexplained recurrent pregnancy losses (uRPL). Prostaglandin E2 (PGE2) plays a pivotal role in regulating immune balance during early pregnancy and it can stimulate inflammatory reactions via EP3. However, the role of PGE2 receptor signaling in the uRPL remains unknown. We aimed to investigate whether prostaglandin E2 receptor 3 (EP3) signaling is involved in the mechanism of uRPL...
April 26, 2018: Endocrine Connections
https://www.readbyqxmd.com/read/29668899/how-uterine-microbiota-might-be-responsible-for-a-receptive-fertile-endometrium
#9
Marilen Benner, Gerben Ferwerda, Irma Joosten, Renate G van der Molen
BACKGROUND: Fertility depends on a receptive state of the endometrium, influenced by hormonal and anatomical adaptations, as well as the immune system. Local and systemic immunity is greatly influenced by microbiota. Recent discoveries of 16S rRNA in the endometrium and the ability to detect low-biomass microbiota fueled the notion that the uterus may be indeed a non-sterile compartment. To date, the concept of the 'sterile womb' focuses on in utero effects of microbiota on offspring and neonatal immunity...
April 16, 2018: Human Reproduction Update
https://www.readbyqxmd.com/read/29588807/placental-surface-area-mediates-the-association-between-fgfr2-methylation-in-placenta-and-full-term-low-birth-weight-in-girls
#10
Fu-Ying Tian, Xi-Meng Wang, Chuanbo Xie, Bo Zhao, Zhongzheng Niu, Lijun Fan, Marie-France Hivert, Wei-Qing Chen
Background: Fibroblast growth factor receptor 2 ( FGFR2 ) gene encodes a protein of the fibroblast growth factor receptor family. FGFR2 gene expression is associated with the regulation of implantation process of placenta which plays a vital role in fetal growth. DNA methylation is widely known as a mechanism of fetal growth. However, it is unclear whether and how DNA methylation of FGFR2 gene in the placenta is associated with full-term low birth weight. This case-control study aims to explore the links between FGFR2 methylation in placenta and full-term low birth weight and to further examine the mediation effect of placental surface area on this association...
2018: Clinical Epigenetics
https://www.readbyqxmd.com/read/29579154/specification-of-trophoblast-from-embryonic-stem-cells-exposed-to-bmp4
#11
R Michael Roberts, Toshihiko Ezashi, Megan Sheridan, Ying Yang
Trophoblast (TB) comprises the outer cell layers of the mammalian placenta that make direct contact with the maternal uterus and, in species with a highly invasive placenta, maternal blood. It has its origin as trophectoderm, a single epithelial layer of extra-embryonic ectoderm that surrounds the embryo proper at the blastocyst stage of development. Here, we briefly compare the features of TB specification and determination in the mouse and the human. We then review research on a model system that has been increasingly employed to study TB emergence, namely the BMP4 (bone morphogenetic protein-4)-directed differentiation of human embryonic stem cells (ESCd) and discuss why outcomes using it have proved so uneven...
March 22, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29550150/effect-of-vitamin-d3-supplementation-in-pregnancy-on-risk-of-pre-eclampsia-randomized-controlled-trial
#12
Aisha Mansoor Ali, Abdulaziz Alobaid, Tasnim Nidal Malhis, Ahmad Fawzi Khattab
BACKGROUND: Vitamin D plays pivotal role in decidualization and implantation of the placenta. Recent researches have shown that low level of vitamin D3 "25-hydroxyvitamin D (25[OH]D)" in serum is a risk factor for pre-eclampsia. Latest evidence supports role of vitamin D3 deficiency treatment in reducing the risk of pre-eclampsia. The aim of this study is to determine the effect of antenatal supplementation of vitamin D3 on the risk of pre-eclampsia and to explore the dose effect in attaining the vitamin D3 normal level...
March 2, 2018: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29548332/trophoblast-differentiation-invasion-and-hormone-secretion-in-a-three-dimensional-in-vitro-implantation-model-with-rhesus-monkey-embryos
#13
T Arthur Chang, Gennadiy I Bondarenko, Behzad Gerami-Naini, Jessica G Drenzek, Maureen Durning, Mark A Garthwaite, Jenna Kropp Schmidt, Thaddeus G Golos
BACKGROUND: The initiation of primate embryo invasion into the endometrium and the formation of the placenta from trophoblasts, fetal mesenchyme, and vascular components are essential for the establishment of a successful pregnancy. The mechanisms which direct morphogenesis of the chorionic villi, and the interactions between trophectoderm-derived trophoblasts and the fetal mesenchyme to direct these processes during placentation are not well understood due to a dearth of systems to examine and manipulate real-time primate implantation...
March 16, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29521599/celecoxib-restores-angiogenic-factor-expression-at-the-maternal-fetal-interface-in-the-bph-5-mouse-model-of-preeclampsia
#14
Dorien Reijnders, Chin-Chi Liu, Xinjing Xu, Anna M Zhao, Kelsey N Olson, Scott D Butler, Nataki C Douglas, Jenny L Sones
Preeclampsia (PE), a hypertensive disease of pregnancy, is a leading cause of fetal and maternal morbidity/mortality. Early angiogenic and inflammatory disturbances within the placenta are thought to underlie the development of the maternal PE syndrome and poor pregnancy outcomes. However, the exact etiology remains largely unknown. Here, we use the BPH/5 mouse model of PE to elucidate the way in which inflammation early in pregnancy contributes to abnormal expression of angiogenic factors at the maternal-fetal interface...
May 1, 2018: Physiological Genomics
https://www.readbyqxmd.com/read/29520033/effects-of-low-molecular-weight-heparin-on-the-polarization-and-cytokine-profile-of-macrophages-and-t-helper-cells-in-vitro
#15
Valentina Bruno, Judit Svensson-Arvelund, Marie Rubér, Göran Berg, Emilio Piccione, Maria C Jenmalm, Jan Ernerudh
Low molecular weight heparin (LMWH) is widely used in recurrent miscarriage treatment. The anti-coagulant effects are established, while immunological effects are not fully known. Our aim was to assess LMWH effects on activation and polarization of central regulatory immune cells from healthy women, and on placenta tissues from women undergoing elective abortions. Isolated blood monocytes and T helper (Th) cells under different activation and polarizing conditions were cultured with or without LMWH. Flow cytometry showed that LMWH exposure induced increased expression of HLA-DR and CD206 in macrophages...
March 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29514533/maternal-and-neonatal-outcomes-of-placenta-increta-and-percreta-from-a-multicenter-study-in-china
#16
Huijing Zhang, Ruochong Dou, Huixia Yang, Xianlan Zhao, Dunjin Chen, Yilin Ding, Hongjuan Ding, Shihong Cui, Weishe Zhang, Hong Xin, Weirong Gu, Yali Hu, Guifeng Ding, Hongbo Qi, Ling Fan, Yuyan Ma, Junli Lu, Yue Yang, Li Lin, Xiucui Luo, Xiaohong Zhang, Shangrong Fan
OBJECTIVE: The objective of this study is to identify the maternal and neonatal outcomes in women with placenta increta or placenta percreta in China. MATERIALS AND METHODS: We retrospectively analyzed 2219 cases from 20 tertiary care centers in China between January 2011 and December 2015. All cases were diagnosed of placenta increta or placenta percreta, based on either intraoperative findings or histopathological findings. RESULTS: The incidence of placenta increta and placenta percreta progressively increased from 0...
March 7, 2018: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29508649/new-data-about-preeclampsia-some-possibilities-of-prevention
#17
Adolf E Schindler
This concise report deals with the known effects of progestogen lack in early pregnancy with failure of implantation and blood supply to the placenta depending on proper trophoblast invasion, spiral artery remodeling, and vessel dilatation. The pathophysiology of preeclampsia will be outlined and the most recent data on the effect of dydrogesterone presented. Dydrogesterone appears to be able to reduce significantly the development of preeclampsia. The effect is related to begin with such prevention and this should be continued until 37th weeks of gestation which would also mean prevention of premature labor...
March 6, 2018: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29486851/placental-pathologic-changes-and-perinatal-outcomes-in-placenta-previa
#18
Eun Jung Jung, Hwa Jin Cho, Jung Mi Byun, Dae Hoon Jeong, Kyung Bok Lee, Moon Su Sung, Ki Tae Kim, Young Nam Kim
INTRODUCTION: Placenta previa is a condition in which the placenta implants in the poorly vascularized lower uterine segment, which may result in inadequate uteroplacental perfusion, in turn, adversely affect the neonatal outcome. Abnormal placentation may also lead to severe postpartum hemorrhage as placenta separation proceeds. We aimed to evaluate the differences in placental histopathology and perinatal outcomes in pregnancies complicated with placenta previa and controls. METHOD: We undertook a retrospective case-control study of 93 pregnancies with placenta previa and 81 controls between 2011 and 2017...
March 2018: Placenta
https://www.readbyqxmd.com/read/29439094/uterine-and-placental-distribution-of-selected-extracellular-matrix-ecm-components-in-the-dog
#19
Felix R Graubner, Alois Boos, Selim Aslan, Ibrahim Kücükaslan, Mariusz P Kowalewski
For many years, modifications of the uterine extracellular matrix (ECM) during gestation have not been considered as critical for successful canine ( Canis lupus familiaris ) pregnancy. However, previous reports indicated an effect of free-floating blastocysts on the composition of the uterine ECM. Here, the expression of selected genes involved in structural functions, cell-to-cell communication and inhibition of matrix metalloproteinases were targeted utilizing qPCR and immunohistochemistry. We found that canine free-floating embryos affect gene expression of FN1 , ECM1 and TIMP4 This seems to be associated with modulation of trophoblast invasion, and proliferative and adhesive functions of the uterus...
May 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29437882/decidual-cell-regulation-of-trophoblast-is-altered-in-pregnancies-at-risk-of-pre-eclampsia
#20
L B James-Allan, G S Whitley, K Leslie, A E Wallace, J E Cartwright
Successful implantation and placentation are dependent on the interaction between decidual stromal cells (DSC) and extravillous trophoblast (EVT) cells. The extent of trophoblast invasion relies on communication between the placenta and maternal decidua. The cyclical process of decidualisation induces a transformation of endometrial fibroblasts to secretory DSC; these secreted products have many functions including the control of trophoblast invasion. Inadequate trophoblast invasion and remodelling of the uterine vessels (the spiral arteries) are associated with pregnancy disorders such as pre-eclampsia...
April 2018: Journal of Molecular Endocrinology
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