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Placenta implantation

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https://www.readbyqxmd.com/read/28941881/historical-evolution-of-ideas-on-eclampsia-preeclampsia-a-proposed-optimistic-view-of-preeclampsia
#1
Pierre-Yves Robillard, Gustaaf Dekker, Gérard Chaouat, Marco Scioscia, Silvia Iacobelli, Thomas C Hulsey
Eclampsia (together with epilepsy) being the first disease ever written down since the beginning of writings in mankind 5000 years ago, we will make a brief presentation of the different major steps in comprehension of Pre-eclampsia. 1) 1840. Rayer, description of proteinuria in eclampsia, 2) 1897 Vaquez, discovery of gestational hypertension in eclamptic women, 3) In the 1970's, description of the "double" trophoblastic invasion existing only in humans (Brosens & Pijnenborg,), 4) between the 1970's and the 1990's, description of preeclampsia being a couple disease...
September 18, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28939480/title-hysteroscopic-removal-of-retained-products-of-conception-implanted-over-a-focal-area-of-adenomyosis-a-case-report
#2
Luis Alonso, Laura Nieto, Jose Carugno
STUDY OBJECTIVE: To describe a technique for hysteroscopic removal of retained products of conception (RPOC) implanted over an area of adenomyosis. DESIGN: Case report (Canadian Task Force classification III) SETTING: Retained products of conception is an unfortunate complication that may occur after resolution of a normal pregnancy, being more common after early pregnancy termination or spontaneous miscarriage. (1) Immediate consequences of RPOC include persistent vaginal bleeding, abdominal pain, pelvic infection, fever and dilated cervix...
September 19, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28913137/intra-cesarean-insertion-and-fixation-of-frameless-intrauterine-devices
#3
REVIEW
Ateş Karateke, Abdulkadir Turgut, Özkan Özdamar, Dirk Wildemeersch
Various contraceptive methods are available to postpartum women including hormonal and nonhormonal barriers, as well as injectable forms. Of all the available birth control methods, intrauterine devices (IUD) are felt by many to be the near-ideal form of contraception, and are recommended by advocacy groups, physicians, and gynecological organizations worldwide. Immediate postpartum IUD insertion deserves greater attention because it can provide immediate contraception, prevents repeat unintended pregnancies, and may serve to reduce the incidence or need for secondary cesarean delivery; however, insertion of conventional T-shape IUDs immediately post placenta delivery is limited by their high expulsion and displacement rates...
March 2017: Turk J Obstet Gynecol
https://www.readbyqxmd.com/read/28892152/pharmacokinetics-of-chlortetracycline-in-maternal-plasma-and-in-fetal-tissues-following-oral-administration-to-pregnant-ewes
#4
K Washburn, V R Fajt, P Plummer, E Papastavros, J F Coetzee, L W Wulf, S Washburn
The purpose of this study was to determine if concentrations of chlortetracycline could be detected in fetal plasma or tissues after administering an oral dose of chlortetracycline (CTC; 500 mg/head/day) reported to be effective in controlling Campylobacter spp. abortions. Five pregnant ewes were administered 250 mg/head twice a day (total dose 500 mg/hd/d) for 7 days. On the beginning of day 7, intravenous catheters were surgically implanted or inserted into the fetus and dam. Plasma samples were collected from the ewe and fetus at various time points before and up to 36 hr after the last dose of CTC...
September 11, 2017: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28864983/epigenetic-influences-during-the-periconception-period-and-assisted-reproduction
#5
Akwasi A Amoako, Tamer M Nafee, Bolarinde Ola
The periconception period starts 6 months before conception and lasts until the tenth week of gestation. In this chapter, we will focus on epigenetic modifications to DNA and gene expression within this period and during assisted reproduction. There are two critical times during the periconception window when significant epigenetic 'reprogramming' occur: one during gametogenesis and another during the pre-implantation embryonic stage. Furthermore, assisted conception treatments, laboratory protocols and culture media can affect the embryo development and birth weights in laboratory animals...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28864982/introduction-a-brief-guide-to-the-periconception-environment
#6
Alireza Fazeli, William V Holt
Definition of the periconception period is not an exact science and is probably somewhat arbitrary. One can define it as spanning the period from the final stages of gamete maturation until formation of the embryo and the stages of embryonic development and implantation. Hence, the periconception period includes periods when spermatozoa are in the female reproductive tract, oocytes are matured and ovulated into the oviduct, fertilization occurs and the embryo undergoes development. By definition the implantation process and the early stages of placenta formation are also regarded as a part of the periconception period...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28833750/first-trimester-detection-of-abnormally-invasive-placenta-in-women-at-risk-a-systematic-review-and-meta-analysis
#7
REVIEW
Francesco D'Antonio, Ilan E Timor-Trisch, Josè Palacios-Jaraquemada, Ana Monteagudo, Danilo Buca, Francesco Forlani, Gabriella Minneci, Francesca Foti, Lamberto Manzoli, Marco Liberati, Ganesh Acharya, Giuseppe Calì
OBJECTIVES: The primary aim of this systematic review was to ascertain whether ultrasound (US) signs suggestive of abnormally invasive placenta (AIP) are present in the first trimester. The secondary aims were to ascertain the strength of association and the predictive accuracy of such signs in detecting AIP in the first trimester of pregnancy. METHODS: MEDLINE, EMBASE, CINAHL and Cochrane databases (2000-2016) were searched. Only studies reporting the first trimester diagnosis of AIP that was subsequently confirmed in the third trimester either during operative delivery or by pathology were included...
August 21, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28822072/cellular-and-molecular-oxidative-stress-related-effects-in-uterine-myometrial-and-trophoblast-decidual-tissues-after-perigestational-alcohol-intake-up-to-early-mouse-organogenesis
#8
Tamara Anahí Coll, Gabriela Chaufan, Leticia Gabriela Pérez-Tito, Martín Ricardo Ventureira, María Del Carmen Ríos de Molina, Elisa Cebral
The placenta plays a major role in embryo-fetal defects and intrauterine growth retardation after maternal alcohol consumption. Our aims were to determine the oxidative status and cellular and molecular oxidative stress effects on uterine myometrium and trophoblast-decidual tissue following perigestational alcohol intake at early organogenesis. CF-1 female mice were administered with 10% alcohol in drinking water for 17 days prior to and up to day 10 of gestation. Control females received ethanol-free water...
August 18, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28812469/placental-pathologic-associations-with-morbidly-adherent-placenta-potential-insights-into-pathogenesis
#9
Linda M Ernst, Rebecca L Linn, Lucy Minturn, Emily S Miller
Background The pathology that underlies morbidly adherent placenta (MAP) is poorly understood. The objective of this study was to describe the placental pathology, especially implantation site pathology, associated with MAP. Methods This was a single institution, retrospective case-control study design examining placentas of patients who delivered between January 2008 and September 2013. MAP cases were defined by the need for clinical intervention at delivery beyond spontaneous placental delivery or simple manual extraction of the placenta...
September 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28782224/prokineticin-1-is-up-regulated-by-insulin-in-decidualizing-human-endometrial-stromal-cells
#10
Dorina Ujvari, Ivika Jakson, Cecilia Oldmark, Sanaz Attarha, Twana Alkasalias, Daniel Salamon, Sebastian Gidlöf, Angelica Lindén Hirschberg
Prokineticin 1 (PROK1), a hypoxia-regulated angiogenic factor, has emerged as a crucial regulator of embryo implantation and placentation. Dysregulation of PROK1 has been linked to recurrent pregnancy loss, pre-eclampsia, foetal growth restriction and preterm birth. These pregnancy complications are common in women with obesity and polycystic ovary syndrome, i.e. conditions associated with insulin resistance and compensatory hyperinsulinaemia. We investigated the effect of insulin on PROK1 expression during in vitro decidualization...
August 7, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28781765/up-and-down-immunity-of-pregnancy-in-humans
#11
REVIEW
Philippe Le Bouteiller, Armand Bensussan
One part of the human placenta in early pregnancy is particularly important for local immunity: the decidua basalis, which is transformed endometrium located at the site of embryo implantation . This placental bed tissue contains both maternal uterine immune cells, including decidual natural killer (NK) cells, the dominant leukocyte population exhibiting a unique phenotype, and fetal extravillous trophoblast which comes into direct contact with maternal decidual cells . To establish a successful placental development and healthy pregnancy outcome, the maternal immune system must tolerate paternal antigens expressed by trophoblast cells yet remain efficient for clearing any local pathogen infection...
2017: F1000Research
https://www.readbyqxmd.com/read/28765940/il%C3%A2-33-restricts-invasion-and-adhesion-of-trophoblast-cell-line-jeg3-by-downregulation-of-integrin-%C3%AE-4%C3%AE-1-and-cd62l
#12
Xiao-Hui Wang, Wei Liu, Deng-Xuan Fan, Wen-Ting Hu, Ming-Qing Li, Xiao-Yong Zhu, Li-Ping Jin
Interleukin-33 (IL-33) promotes migration of cancer cells through downregulating the expression of E-cadherin. Previous studies have demonstrated that IL‑33 stimulates the proliferation of trophoblasts. However, the effect of IL‑33 on the adhesion and invasion of trophoblasts has not been investigated in detail. In the present study, the expression of IL‑33 and its receptor, IL‑1 receptor‑like 1 (ST2), was examined in villi from women during early pregnancy using immunohistochemistry. ST2 expression on human trophoblast and choriocarcinoma cell lines JAR, BeWo, JEG3 and HTR8 was confirmed by flow cytometry (FCM) assay...
October 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28758928/role-of-plasminogen-activator-inhibitor-type-1-in-pathologies-of-female-reproductive-diseases
#13
REVIEW
Yao Ye, Aurelia Vattai, Xi Zhang, Junyan Zhu, Christian J Thaler, Sven Mahner, Udo Jeschke, Viktoria von Schönfeldt
Normal pregnancy is a state of hypercoagulability with diminishing fibrinolytic activity, which is mainly caused by an increase of plasminogen activator inhibitor type 1 (PAI-1). PAI-1 is the main inhibitor of plasminogen activators, including tissue-type plasminogen activator (tPA) and urokinase-type plasminogen activator (uPA). In human placentas, PAI-1 is expressed in extravillous interstitial trophoblasts and vascular trophoblasts. During implantation and placentation, PAI-1 is responsible for inhibiting extra cellular matrix (ECM) degradation, thereby causing an inhibition of trophoblasts invasion...
July 29, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28756581/predelivery-uterine-arteries-embolization-in-patients-affected-by-placental-implant-anomalies
#14
Francesco Giurazza, Giuseppe Albano, Liliana Valentino, Emiliano Schena, Tiziana Capussela, Maria Antonella Di Pasquale, Francesco Di Pietto, Rosaria De Ritis, Gennaro Nasti, Giuseppe Scognamiglio, Raffaella Niola
PURPOSE: The aim of this study is to report on a single center experience of managing patients affected by placenta previa major and/or accretism by embolizing uterine arteries immediately before the cesarean delivery to reduce blood loss and secondary the rate of hysterectomies. MATERIALS AND METHODS: Sixty-nine patients have been prospectively enrolled. Inclusion criteria were radiological diagnosis of placenta anomalies and risk factors for peri/postpartum hemorrhage...
July 29, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28753590/ectopic-abdominal-pregnancy-due-to-uterine-perforation-after-an-attempt-to-terminate-pregnancy-a-case-presentation
#15
Jónathan Hernández Núñez, Alexander Abreu Díaz, Ndivhuwo Michael Ndwambi, Fermín Luis Martínez
Secondary abdominal ectopic pregnancy is rare in clinical practice, but may lead to an increased maternal mortality. We present the case of a patient with an abdominal pregnancy secondary to a uterine perforation caused by a voluntary attempt to interrupt pregnancy that presented with nine weeks of abdominal pain and minimal vaginal bleeding which was mistakenly diagnosed as acute pelvic inflammatory disease, urinary tract infection, and post-abortion products of conception. Finally, the abdominal ultrasound test found an abdominal ectopic pregnancy...
July 17, 2017: Medwave
https://www.readbyqxmd.com/read/28747528/embryo-implantation-evolved-from-an-ancestral-inflammatory-attachment-reaction
#16
Oliver W Griffith, Arun R Chavan, Stella Protopapas, Jamie Maziarz, Roberto Romero, Gunter P Wagner
The molecular changes that support implantation in eutherian mammals are necessary to establish pregnancy. In marsupials, pregnancy is relatively short, and although a placenta does form, it is present for only a few days before parturition. However, morphological changes in the uterus of marsupials at term mimic those that occur during implantation in humans and mice. We investigated the molecular similarity between term pregnancy in the marsupials and implantation in eutherian mammals using the gray short-tailed opossum (Monodelphis domestica) as a model...
August 8, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28722160/placental-proteomics-reveal-insights-into-fetal-alcohol-spectrum-disorders
#17
Katie L Davis-Anderson, Sebastian Berger, Emilie R Lunde-Young, Vishal D Naik, Heewon Seo, Greg A Johnson, Hanno Steen, Jayanth Ramadoss
BACKGROUND: Fetal alcohol spectrum disorders (FASD) describe many of the well-known neurodevelopmental deficits afflicting children exposed to alcohol in utero. The effects of alcohol on the maternal-fetal interface, especially the placenta, have been less explored. We herein hypothesized that chronic binge alcohol exposure during pregnancy significantly alters the placental protein profile in a rat FASD model. METHODS: Pregnant rats were orogastrically treated daily with alcohol (4...
September 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28699111/hla-class-ib-in-pregnancy-and-pregnancy-related-disorders
#18
REVIEW
Gry Persson, Wenna Nascimento Melsted, Line Lynge Nilsson, Thomas Vauvert F Hviid
The HLA class Ib genes, HLA-E, HLA-F, and HLA-G, were discovered long after the classical HLA class Ia genes. The elucidation of their functions had a modest beginning. However, their basic functions and involvement in pathophysiology and a range of diseases are now emerging. Although results from a range of studies support the functional roles for the HLA class Ib molecules in adult life, especially HLA-G and HLA-F have most intensively been, and were also primarily, studied in relation to reproduction and pregnancy...
July 11, 2017: Immunogenetics
https://www.readbyqxmd.com/read/28678605/the-early-pregnancy-placenta-foreshadows-dna-methylation-alterations-of-solid-tumors
#19
Akpéli V Nordor, Djamel Nehar-Belaid, Sophie Richon, David Klatzmann, Dominique Bellet, Virginie Dangles-Marie, Thierry Fournier, Martin J Aryee
The placenta relies on phenotypes that are characteristic of cancer to successfully implant the embryo in the uterus during early pregnancy. Notably, it has to invade its host tissues, promote angiogenesis-while surviving hypoxia-, and escape the immune system. Similarities in DNA methylation patterns between the placenta and cancers suggest that common epigenetic mechanisms may be involved in regulating these behaviors. We show here that megabase-scale patterns of hypomethylation distinguish first from third trimester chorionic villi in the placenta, and that these patterns mirror those that distinguish many tumors from corresponding normal tissues...
July 5, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/28670836/epithelial-cadherin-disassociates-from-the-lateral-plasma-membrane-of-uterine-epithelial-cells-throughout-pregnancy-in-a-marsupial
#20
Jessica S Dudley, Christopher R Murphy, Michael B Thompson, Bronwyn M McAllan
The uterine luminal epithelium is the first site of contact between fetal and maternal tissues during therian pregnancy and must undergo specialised changes for implantation of the blastocyst to be successful. These changes, collectively termed the plasma membrane transformation (PMT), allow the blastocyst to attach to the uterine epithelium preceding the formation of a placenta. There are similarities in the morphological and molecular changes occurring in live-bearing eutherian species during the PMT studied so far...
July 3, 2017: Journal of Anatomy
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