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placenta medicine

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https://www.readbyqxmd.com/read/29669225/placenta-accreta-spectrum
#1
Robert M Silver, D Ware Branch
New England Journal of Medicine, Volume 378, Issue 16, Page 1529-1536, April 2018.
April 19, 2018: New England Journal of Medicine
https://www.readbyqxmd.com/read/29662820/effects-of-selenium-on-the-survival-and-invasion-of-trophoblasts
#2
Jee Yoon Na, Jin Seok, Sohae Park, Jung Seok Kim, Gi Jin Kim
Objective: Placental oxidative stress is known to be a factor that contributes to pregnancy failure. The aim of this study was to determine whether selenium could induce antioxidant gene expression and regulate invasive activity and mitochondrial activity in trophoblasts, which are a major cell type of the placenta. Methods: To understand the effects of selenium on trophoblast cells exposed to hypoxia, the viability and invasive activity of trophoblasts were analyzed...
March 2018: Clinical and Experimental Reproductive Medicine
https://www.readbyqxmd.com/read/29630059/model-surgical-training-skills-acquisition-in-fetoscopic-laser-photocoagulation-of-monochorionic-diamniotic-twin-placenta-using-realistic-simulators
#3
Tuangsit Wataganara, Arundhati Gosavi, Katika Nawapun, Pradip D Vijayakumar, Nisarat Phithakwatchara, Mahesh Choolani, Lin Lin Su, Arijit Biswas, Citra N Z Mattar
Fetoscopic laser coagulation of arterio-venous anastomoses (AVA) in a monochorionic placenta is the standard of care for twin-twin transfusion syndrome (TTTS), but is technically challenging and can lead to significant complications. Acquiring and maintaining the necessary surgical skills require consistent practice, a critical caseload, and time. Training on realistic surgical simulators can potentially shorten this steep learning curve and enables several proceduralists to acquire procedure-specific skills simultaneously...
March 21, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29608700/trophoblast-retrieval-and-isolation-from-the-cervix-origins-of-cervical-trophoblasts-and-their-potential-value-for-risk-assessment-of-ongoing-pregnancies
#4
Gerit Moser, Sascha Drewlo, Berthold Huppertz, D Randall Armant
BACKGROUND: Early during human development, the trophoblast lineage differentiates to commence placentation. Where the placenta contacts the uterine decidua, extravillous trophoblast (EVT) cells differentiate and invade maternal tissues. EVT cells, identified by expression of HLA-G, invade into uterine blood vessels (endovascular EVT), as well as glands (endoglandular EVT), and open such luminal structures towards the intervillous space of the placenta. Endoglandular invasion diverts the contents of uterine glands to the intervillous space, while glands near the margin of the placenta that also contain endoglandular EVT cells open into the reproductive tract...
March 28, 2018: Human Reproduction Update
https://www.readbyqxmd.com/read/29596519/response-of-human-normal-and-leukemia-cells-to-factors-released-by-amnion-fragments-in-vitro
#5
Zofia Grzywocz, Grazyna Hoser, Stanislawa Sabalinska, Piotr Ladyzynski, Jaroslaw Czubak, Malgorzata Dworczynska, Romuald Debski, Ewa Pius-Sadowska, Boguslaw Machalinski, Jerzy Kawiak
Amnion is a membrane surrounding the embryo/fetus which determine growth factors and interleukins with angiogenic, immunogenic, and anti-inflammatory properties. The aim of the present study was to investigate the effects of conditioned culture medium from 24-h cultures of human amnion (hAM CCM) on migration and proliferation of human umbilical vein endothelial primary cells (HUVECs), freshly isolated bone marrow mononuclear cells (BM MNCs), and Jurkat leukemia cell line. Amnion membrane was freshly isolated from healthy placenta and its fragments cultured in vitro to produce hAM CCM...
2018: PloS One
https://www.readbyqxmd.com/read/29562782/immunological-and-differentiation-properties-of-amniotic-cells-are-retained-after-immobilization-in-pectin-gel
#6
Antonietta R Silini, Valentina Spoldi, Silvia De Munari, Elsa Vertua, Fabiola Munarin, Paola Petrini, Silvia Farè, Ornella Parolini
Mesenchymal stromal cells from the human amniotic membrane (i.e., human amniotic mesenchymal stromal cells [hAMSCs]) of term placenta are increasingly attracting attention for their applications in regenerative medicine. Osteochondral defects represent a major clinical problem with lifelong chronic pain and compromised quality of life. Great promise for osteochondral regeneration is held in hydrogel-based constructs that have a flexible composition and mimic the physiological structure of cartilage. Cell loading within a hydrogel represents an advantage for regenerative purposes, but the encapsulation steps can modify cell properties...
January 2018: Cell Transplantation
https://www.readbyqxmd.com/read/29562773/placental-stem-cells-from-domestic-animals-translational-potential-and-clinical-relevance
#7
B Barboni, V Russo, P Berardinelli, A Mauro, L Valbonetti, H Sanyal, A Canciello, L Greco, A Muttini, V Gatta, L Stuppia, M Mattioli
The field of regenerative medicine is moving toward clinical practice in veterinary science. In this context, placenta-derived stem cells isolated from domestic animals have covered a dual role, acting both as therapies for patients and as a valuable cell source for translational models. The biological properties of placenta-derived cells, comparable among mammals, make them attractive candidates for therapeutic approaches. In particular, stemness features, low immunogenicity, immunomodulatory activity, multilineage plasticity, and their successful capacity for long-term engraftment in different host tissues after autotransplantation, allo-transplantation, or xenotransplantation have been demonstrated...
January 2018: Cell Transplantation
https://www.readbyqxmd.com/read/29535770/placenta-and-placental-derivatives-in-regenerative-therapies-experimental-studies-history-and-prospects
#8
REVIEW
Olena Pogozhykh, Volodymyr Prokopyuk, Constança Figueiredo, Denys Pogozhykh
Placental structures, capable to persist in a genetically foreign organism, are a natural model of allogeneic engraftment carrying a number of distinctive properties. In this review, the main features of the placenta and its derivatives such as structure, cellular composition, immunological and endocrine aspects, and the ability to invasion and deportation are discussed. These features are considered from a perspective that determines the placental material as a unique source for regenerative cell therapies and a lesson for immunological tolerance...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29533546/telocytes-in-the-female-reproductive-system-an-overview-of-up-to-date-knowledge
#9
REVIEW
Przemysław Janas, Iwona Kucybała, Małgorzata Radoń-Pokracka, Hubert Huras
Telocytes are emerging cell population localized in the stroma of numerous organs, characterized by a distinctive morphology - small cell body with very long, slender prolongations, termed telopodes. Those cells can be found in the whole female reproductive system: in the vagina, uterus, oviducts and ovaries, mammary glands and also in the placenta. In our review, we aim at complete and transparent revision of the current knowledge of telocytes' localization and function, enriched by the analysis of the possible future direction of development of their clinical applications...
March 13, 2018: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29533533/placenta-derived-decidua-stromal-cells-for-treatment-of-severe-acute-graft-versus-host-disease
#10
Olle Ringden, Arjang Baygan, Mats Remberger, Britt Gustafsson, Jacek Winiarski, Bita Khoein, Guido Moll, Lena Klingspor, Magnus Westgren, Behnam Sadeghi
Severe acute graft-versus-host disease (GVHD) is a life-threatening complication after allogeneic hematopoietic stem cell transplantation (HSCT). The placenta protects the fetus from the mother's immune system. We evaluated placenta-derived decidua stromal cells (DSCs), which differ from bone marrow mesenchymal stromal cells (BM-MSCs), as a treatment for severe acute GVHD. DSCs were obtained from term placentas. The DSCs were given to 38 patients with severe acute GVHD; 25 were steroid refractory (SR). DSCs were thawed and infused in buffer supplemented with either 10% AB plasma (group 1, n = 17), or 5% albumin (group 2, n = 21)...
March 13, 2018: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29527691/extending-fetal-life-postnatal-placentae-for-preterm-babies
#11
Mary Judith Berry
The advances in perinatal medicine over the last 20 years are unprecedented. Babies born at extremes of gestational age and birthweight are now able to benefit from innovation in intensive care and many survive into adulthood. This article is protected by copyright. All rights reserved.
March 11, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29499921/pharmacological-treatment-of-gestational-diabetes-mellitus-point-counterpoint
#12
Oded Langer
Controversies persist over the most efficacious pharmacologic treatment for gestational diabetes mellitus. For purposes of accuracy in this article, the individual American College of Obstetricians and Gynecologists Practice Bulletin and American Diabetes Association Standards of Medical Care positions on each issue are quoted and then deliberated with evidence of counter claims presented in point/counterpoint. This is a review of all the relevant evidence for the most holistic picture possible. The main issues are (1) which diabetic drugs cross the placenta, (2) the quality of evidence and data source validity, (3) the rationale for the designation of glucose control as the primary outcome in gestational diabetes mellitus, and (4) which drugs (metformin, glyburide, or insulin) are most effective in improving secondary outcomes...
February 28, 2018: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29477479/engineered-nanomaterial-applications-in-perinatal-therapeutics
#13
REVIEW
S B Fournier, J N D'Errico, P A Stapleton
Engineered nanomaterials (ENM) are widely used in commercial, domestic, and more recently biomedical applications. While the majority of exposures to ENM are unintentional, biomedical platforms are being evaluated for use in individualized and/or tissue-targeted therapies. Treatments are often avoided during prenatal periods to reduce adverse effects on the developing fetus. The placenta is central to maternal-fetal medicine. Perturbation of placental functions can limit transfer of necessary nutrients, alter production of hormones needed during pregnancy, or allow undesired passage of xenobiotics to the developing fetus...
February 23, 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29409911/inhibition-of-gingipains-prevents-porphyromonas-gingivalis-induced-preterm-birth-and-fetal-death-in-pregnant-mice
#14
Ryosuke Takii, Tomoko Kadowaki, Takayuki Tsukuba, Kenji Yamamoto
Accumulating epidemiological evidence indicates that infection with Porphyromonas gingivalis which is a major periodontal pathogen, causes preterm birth and low birth weight. However, virulence factors of P. gingivalis responsible for preterm birth/low birth weight remain to be elucidated. In this study, using P. gingivalis-infected pregnant mice as an in vivo model, we investigated whether gingipains-cysteine proteinases produced by P. gingivalis-affect preterm birth and low birth weight. We found that intravenous infection of pregnant mice with P...
February 6, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29385909/wu-tou-decoction-inhibits-angiogenesis-in-experimental-arthritis-by-targeting-vegfr2-signaling-pathway
#15
Lianhua He, Chunfang Liu, Congcong Sun, Jingxia Wang, Kai Zhi, Danni Sun, Hui Wang, Qianqian Wang, Na Lin
Wu-tou decoction (WTD) is a classic traditional Chinese medicine formula and has been extensively used for the treatment of rheumatoid arthritis (RA). Previous reports indicates that WTD possesses anti-inflammatory and antinociceptive activities, and inhibits the development of arthritic joints and disease severity of collagen-induced arthritis (CIA) or adjuvant-induced rats; however, its action on angiogenesis of RA has not been clarified. The present study aims to determine the anti-angiogenic activity of WTD in CIA rats and in various angiogenesis models...
January 31, 2018: Rejuvenation Research
https://www.readbyqxmd.com/read/29250086/-dianthus-chinensis-l-the-structural-difference-between-vascular-bundles-in-the-placenta-and-ovary-wall-suggests-their-different-origin
#16
Xue-Min Guo, Ying-Ying Yu, Lan Bai, Rong-Fu Gao
Dianthus chinensis is a perennial herbaceous plant with great ornamental, botanical, ecological, and medicinal value. The pistil of D. chinensis is composed of two fused carpels with free central placenta and two separate styles. The placenta is a columnar structure extending about two-thirds the length of the maturing fruit, which is typical of the Caryophyllaceous. Traditionally, free central placenta is thought to have evolved from axial placenta by septal disappearance, and axial placenta to have occurred through fusion of conduplicate carpels with marginal placenta...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29234870/-good-practice-procedures-for-acquisition-and-preparation-of-cryopreserved-human-amniotic-membranes-from-donor-placentas
#17
REVIEW
H Thomasen, J Schroeter, T Reinhard, B Seitz, K-P Steuhl, D Meller
Within the framework of obtaining a valid authorization for tissue preparation of cryopreserved human amniotic membranes at the Paul Ehrlich Institute, pursuant to § 21a paragraph 1 of the German Medicines Act (AMG), parts of the existing good practice procedures for acquisition of cryopreserved human amniotic membranes from donor placentas were reviewed and supplemented by new knowledge. The present good practice procedures were formulated in cooperation with members of the section for tissue transplantation and biotechnology of the German Ophthalmological Society...
December 12, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/29234425/systems-pharmacological-approach-to-the-effect-of-bulsu-san-promoting-parturition
#18
Su Yeon Suh, Won G An
Bulsu-san (BSS) has been commonly used in oriental medicine for pregnant women in East Asia. The purpose of this research was to elucidate the effect of BSS on ease of parturition using a systems-level in silico analytic approach. Research results show that BSS is highly connected to the parturition related pathways, biological processes, and organs. There were numerous interactions between most compounds of BSS and multiple target genes, and this was confirmed using herb-compound-target network, target-pathway network, and gene ontology analysis...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29230859/placenta-microstructure-and-microcirculation-imaging-with-diffusion-mri
#19
Paddy J Slator, Jana Hutter, Laura McCabe, Ana Dos Santos Gomes, Anthony N Price, Eleftheria Panagiotaki, Mary A Rutherford, Joseph V Hajnal, Daniel C Alexander
PURPOSE: To assess which microstructural models best explain the diffusion-weighted MRI signal in the human placenta. METHODS: The placentas of nine healthy pregnant subjects were scanned with a multishell, multidirectional diffusion protocol at 3T. A range of multicompartment biophysical models were fit to the data, and ranked using the Bayesian information criterion. RESULTS: Anisotropic extensions to the intravoxel incoherent motion model, which consider the effect of coherent orientation in both microvascular structure and tissue microstructure, consistently had the lowest Bayesian information criterion values...
December 11, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29215645/cherchez-la-femme-maternal-incidental-findings-can-explain-discordant-prenatal-cell-free-dna-sequencing-results
#20
REVIEW
Diana W Bianchi
Circulating DNA fragments in a pregnant woman's plasma derive from three sources: placenta, maternal bone marrow, and fetus. Prenatal sequencing to noninvasively screen for fetal chromosome abnormalities is performed on this mixed sample; results can therefore reflect the maternal as well as the fetoplacental DNA. Although it is recommended that pretest counseling include the possibility of detecting maternal genomic imbalance, this seldom occurs. Maternal abnormalities that can affect a prenatal screening test result include disorders that affect the size and metabolism of DNA, such as B12 deficiency, autoimmune disease, and intrahepatic cholestasis of pregnancy...
December 7, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
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