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preeclampsia etiology

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https://www.readbyqxmd.com/read/29212809/animal-models-of-preeclampsia-translational-failings-and-why
#1
Sarah A Marshall, Natalie J Hannan, Maria Jelinic, Thy P H Nguyen, Jane E Girling, Laura J Parry
Preeclampsia affects up to 8% of pregnancies worldwide and is a leading cause of both maternal and fetal morbidity and mortality. Our current understanding of the cause(s) of preeclampsia is far from complete, and the lack of a single reliable animal model that recapitulates all aspects of the disease further confounds our understanding. This is partially due to the heterogeneous nature of the disease, coupled with our evolving understanding of its etiology. Nevertheless, animal models are still highly relevant and useful tools that help us better understand the pathophysiology of specific aspects of preeclampsia...
December 6, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29196995/epigenetics-and-preeclampsia-programming-of-future-outcomes
#2
Alberto Borges Peixoto, Liliam Cristine Rolo, Luciano Marcondes Machado Nardozza, Edward Araujo Júnior
Pregnancy is known to induce rapid, progressive, and substantial changes to the cardiovascular system, ultimately facilitating successful pregnancy outcomes. Women who develop hypertensive disorders during pregnancy are considered to have "failed" the cardiovascular stress test of pregnancy and likely represent a subpopulation with inadequate cardiovascular accommodation. Preeclampsia is a serious complication with a myriad of manifestations in both mother and offspring. This pregnancy syndrome is a polygenic disease and has now been linked to a greater incidence of cardiovascular disease...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29193660/preterm-birth-with-placental-evidence-of-malperfusion-is-associated-with-cardiovascular-risk-factors-after-pregnancy-a-prospective-cohort-study
#3
Janet M Catov, Matthew F Muldoon, Steven E Reis, Roberta B Ness, Lananh N Nguyen, Jose-Miguel Yamal, Hyunsoo Hwang, W Tony Parks
OBJECTIVE: Preterm birth (PTB) is associated with excess maternal cardiovascular disease risk. We considered that women with PTB and placental evidence of maternal malperfusion would be particularly affected. DESIGN: Pregnancy cohort study. SETTING: Pittsburgh Pennsylvania, US. POPULATION: Women with PTB (n=115) and term births (n=210) evaluated 4-12 years after pregnancy. METHODS: Cardiometabolic risk markers were compared in women with prior PTB vs...
November 28, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/29184401/placenta-derived-exosomes-potential-biomarkers-of-preeclampsia
#4
REVIEW
Preenan Pillay, Kogi Moodley, Jagidesa Moodley, Irene Mackraj
Preeclampsia remains a leading cause of maternal and fetal mortality, due to ineffective treatment and diagnostic strategies, compounded by the lack of clarity on the etiology of the disorder. Although several clinical and biological markers of preeclampsia have been evaluated, they have proven to be ineffective in providing a definitive diagnosis during the various stages of the disorder. Exosomes have emerged as ideal biomarkers of pathological states, such as cancer, and have more recently gained interest in pregnancy-related complications, due to their role in cellular communication in normal and complicated pregnancies...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29163791/abnormal-cyp11a1-gene-expression-induces-excessive-autophagy-contributing-to-the-pathogenesis-of-preeclampsia
#5
Tianying Pan, Guolin He, Meng Chen, Chenyi Bao, Yan Chen, Guangyu Liu, Mi Zhou, Shuying Li, Wenming Xu, Xinghui Liu
Objective: In this study, we investigated the exact mechanism by which excessive CYP11A1 expression impairs the placentation process and whether this causes preeclampsia (PE) in an in vivo model. Setting and Design: In order to study CYP11A1 overexpression, BeWo cells were transfected with CYP11A1. Pregnenolone, progesterone, and testosterone levels were measured by enzyme linked immunosorbent assays, and levels of autophagy markers were quantified by western blotting and immunofluorescence...
October 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/29153697/increased-tissue-factor-expression-and-promoter-hypomethylation-in-preeclampsia-placentas-in-a-chinese-population
#6
Rui Liu, Qiang Ma, Anxin Wen, Gaiyan Tian, Meili Li, Wenjuan Wang, Weimin Wang
OBJECTIVES: To explore the relationship between expression of tissue factor and its methylation levels in the placentas of preeclampsia among Chinese Han population. METHODS: In this study, we explored gene manifestation or expression of tissue factor, and evaluated methylation levels of tissue factor promoter areas in 16 clinical preeclampsia placentas as well as 16 paired normal pregnancy placentas from the Chinese Han population. Real-time PCR, immunohistochemistry, Western blotting, and methylation-specific PCR were conducted...
October 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29113524/how-does-preeclampsia-affect-neonates-highlights-in-the-disease-s-immunity
#7
Lina R Marins, Leonardo B Anizelli, Ana L Sarquis, Mariana D Romanowski
INTRODUCTION: Preeclampsia (PE) is the primary obstetrical cause in one to four perinatal deaths. Although the etiology and pathogenesis of preeclampsia is not fully known, a proinflammatory immune state prevails and can disrupt fetal hematopoiesis. Some of the effects on the newborn include neonatal thrombocytopenia, neutropenia, a reduction in T regulatory cells and an increased cytotoxic natural killer cell profile. METHOD: Electronic databases were searched, and defined criteria were applied to select articles for review...
November 7, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29092665/the-agonistic-autoantibodies-to-the-angiotensin-ii-type-1-receptor-in-pregnancies-complicated-by-hypertensive-disorders
#8
Agata Szpera-Gozdziewicz, Tomasz Gozdziewicz, Przemysław Wirstlein, Ewa Wender-Ozegowska, Grzegorz H Breborowicz
INTRODUCTION: The etiology and pathogenesis of pregnancy-related hypertensive disorders is complex and multifactorial. The aim of our study is the investigation of the differences in the autoantibodies against angiotensin II type 1 receptor (AT1-AA) titers among pregnant patients with chronic hypertension, gestational hypertension and preeclampsia compared to the healthy pregnant women. PATIENTS AND METHODS: We created 3 study groups (preeclampsia [n = 16], chronic hypertension [n = 13], gestational hypertension [n = 17]) and the control group consisting of 17 healthy pregnant women...
November 1, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29092053/mining-dna-methylation-alterations-towards-a-classification-of-placental-pathologies
#9
Samantha L Wilson, Katherine Leavey, Brian Cox, Wendy P Robinson
Placental health is a key component to a successful pregnancy. Placental insufficiency (PI), inadequate nutrient delivery to the fetus, is associated with preeclampsia (PE), a maternal hypertensive disorder, and intrauterine growth restriction (IUGR), pathologically poor fetal growth. PI is more common in early-onset PE (EOPE) than late-onset PE (LOPE). However, the relationship between these disorders remains unclear. While DNA methylation (DNAm) alterations have been identified in PE and IUGR, these entities can overlap and few studies have analyzed them separately...
October 30, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/29079144/society-for-maternal-fetal-medicine-smfm-consult-series-44-management-of-bleeding-in%C3%A2-the-late-preterm-period
#10
Cynthia Gyamfi-Bannerman
Third-trimester bleeding is a common complication arising from a variety of etiologies, some of which may initially present in the late preterm period. Previous management recommendations have not been specific to this gestational age window, which carries a potentially lower threshold for delivery. The purpose of this document is to provide guidance on management of late preterm (34 0/7-36 6/7 weeks of gestation) vaginal bleeding. The following are Society for Maternal-Fetal Medicine recommendations: (1) we recommend delivery at 36-37 6/7 weeks of gestation for stable women with placenta previa without bleeding or other obstetric complications, such as preeclampsia or fetal growth restriction (Grade 1B); (2) we do not recommend routine cervical length screening for women with placenta previa in the late preterm period because of a lack of data on an appropriate management strategy (Grade 2C); (3) we recommend a planned delivery between 34 and 37 weeks of gestation for stable women with placenta accreta (Grade 1C); (4) we recommend delivery between 34 and 37 weeks of gestation for stable women with vasa previa (Grade 1C); (5) we recommend that in women with active hemorrhage in the late preterm period, delivery should not be delayed for the purpose of administering antenatal corticosteroids (Grade 1B); (6) we recommend that fetal lung maturity testing should not be used to guide management in the late preterm period when an indication for delivery is present (Grade 1B); and (7) we recommend that antenatal corticosteroids should be administered to women who are eligible and are managed expectantly if delivery is likely within 7 days, the gestational age is between 34 0/7 and 36 6/7 weeks of gestation, and antenatal corticosteroids has not previously been administered (Grade 1A)...
October 25, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29072954/fetal-vascular-malperfusion
#11
REVIEW
Amer Heider
CONTEXT: - Fetal vascular malperfusion, also known as fetal thrombotic vasculopathy, remains an underrecognized pathologic finding and should be noted during placental evaluation. OBJECTIVE: - To review histologic findings, gain familiarity with the updated terminology, and to recognize important clinical associations with this entity. DATA SOURCES: - University of Michigan cases, PubMed search, multiple review articles including recent placental workshop group consensus statement, and selected book chapters...
November 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/29072060/risk-factors-for-hydatidiform-mole-is-husband%C3%A2-s-job-a-major-risk-factor
#12
Hourieh Shamshiri Milani, Morteza Abdollahi, Sara Torbati, Taha Asbaghi, Eznollah Azargashb
Background: The hydatidiform mole (HM) is a precancerous placenta considered as a gestational trophoblastic disease (GTD). It may convert to more invasive forms of gestational trophoblastic neoplasia (GTN), endangering women’s health by more severe complications. Most GTN cases originate from HM, which is associated with uterine bleeding, preeclampsia and thyroid problems. Its etiology has not been adequately explored, but some risk factors have been reported. The aim of the present study was to assess any relationships between molar pregnancy and factors including mothers’ and husbands’ occupations...
October 26, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/29017438/hsd11b2-runx3-and-line-1-methylation-in-placental-dna-of-hypertensive-disorders-of-pregnancy-patients
#13
Aleksandra Majchrzak-Celińska, Katarzyna Kosicka, Julia Paczkowska, Franciszek K Główka, Grzegorz H Bręborowicz, Mariola Krzyścin, Anna Siemiątkowska, Marcin Szaumkessel, Wanda Baer-Dubowska
Hypertensive Disorders of Pregnancy (HDsP) remain leading causes of maternal and perinatal morbidity and mortality. Growing evidence suggests the involvement of epigenetic factors, such as gene-specific and global DNA methylation changes, both in the etiology and as an effect of HDsP. In this study, we investigated the potential association between placental DNA methylation status in selected CpGs of HSD11B2 cortisol level controlling gene, RUNX3 tumor suppressor gene, and long interspersed nucleotide element-1 (LINE-1) repetitive elements and HDsP-preeclampsia (PE), gestational hypertension (GH), and chronic hypertension (CH)...
November 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28965414/detergent-insoluble-proteome-analysis-revealed-aberrantly-aggregated-proteins-in-human-preeclampsia-placentas
#14
Wanling Zhang, Xing Chen, Ziqi Yan, Yang Chen, Yizhi Cui, Bingjun Chen, Chujun Huang, Weiwen Zhang, Xingfeng Yin, Qing-Yu He, Fang He, Tong Wang
Preeclampsia (PE) is a placenta disease, featured by hypertension, proteinuria and other multi-organ dysfunctions, and its etiology is unclear. We and others have shown that intensive ER stress and unfolded protein response (UPR) occur in the PE placenta. In this study, we isolated detergent-insoluble proteins (DIPs) from human placenta tissues, which were enriched with protein aggregates, to characterize the placenta UPR in PE. With data-independent acquisition (DIA) mass spectrometry, we identified 2066 DIPs across all normal (n=10) and PE (n=10) placenta samples, among which 110 and 108 DIPs were significantly up- and down- regulated in PE, respectively...
October 1, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28942512/altered-endothelial-nitric-oxide-signaling-as-a-paradigm-for-maternal-vascular-maladaptation-in-preeclampsia
#15
REVIEW
George Osol, Nga Ling Ko, Maurizio Mandalà
PURPOSE OF REVIEW: The goal of this review is to present the newest insights into what we view as a central failure of cardiovascular adaptation in preeclampsia (PE) by focusing on one clinically significant manifestation of maternal endothelial dysfunction: nitric oxide signaling. The etiology, symptoms, and current theories of the PE syndrome are described first, followed by a review of the available evidence, and underlying causes of reduced endothelial nitric oxide (NO) signaling in PE...
September 23, 2017: Current Hypertension Reports
https://www.readbyqxmd.com/read/28923940/defective-decidualization-during-and-after-severe-preeclampsia-reveals-a-possible-maternal-contribution-to-the-etiology
#16
Tamara Garrido-Gomez, Francisco Dominguez, Alicia Quiñonero, Patricia Diaz-Gimeno, Mirhan Kapidzic, Matthew Gormley, Katherine Ona, Pablo Padilla-Iserte, Michael McMaster, Olga Genbacev, Alfredo Perales, Susan J Fisher, Carlos Simón
In preeclampsia (PE), cytotrophoblast (CTB) invasion of the uterus and spiral arteries is often shallow. Thus, the placenta's role has been a focus. In this study, we tested the hypothesis that decidual defects are an important determinant of the placental phenotype. We isolated human endometrial stromal cells from nonpregnant donors with a previous pregnancy that was complicated by severe PE (sPE). Compared with control cells, they failed to decidualize in vitro as demonstrated by morphological criteria and the analysis of stage-specific antigens (i...
October 3, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28912817/the-effects-of-vitamin-d-supplement-on-prevention-of-recurrence-of-preeclampsia-in-pregnant-women-with-a-history-of-preeclampsia
#17
Sanam Behjat Sasan, Farnaz Zandvakili, Nasrin Soufizadeh, Elaheh Baybordi
INTRODUCTION: Preeclampsia is a pregnancy-specific syndrome. One of the hypotheses concerning the etiology of preeclampsia is vitamin D deficiency during pregnancy. METHOD AND MATERIALS: The present study is a randomized controlled clinical trial which aims to determine the effect of vitamin D supplement on reducing the probability of recurrent preeclampsia. 72 patients were placed in control group while 70 patients were randomized to the intervention group. The intervention group received a 50000 IU pearl vitamin D3 once every two weeks...
2017: Obstetrics and Gynecology International
https://www.readbyqxmd.com/read/28911139/preeclampsia-downregulates-micrornas-in-fetal-endothelial-cells-roles-of-mir-29a-c-3p-in-endothelial-function
#18
Chi Zhou, Qing-Yun Zou, Hua Li, Rui-Fang Wang, Ai-Xia Liu, Ronald R Magness, Jing Zheng
Context: Preeclampsia is a leading cause of fetal and maternal morbidity and mortality during pregnancy. Although the etiology of preeclampsia is unknown, preeclampsia offspring have increased risks of developing cardiovascular disorders in adulthood, implicating that preeclampsia programs fetal vasculature in utero. Objective: We hypothesize that preeclampsia alters expression profiles of endothelial microRNAs (miRNAs) in fetal endothelial cells and disturbs the vascular endothelial growth factor A (VEGFA)- and fibroblast growth factor 2 (FGF2)-induced endothelial function...
September 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28885423/early-second-trimester-fetal-growth-restriction-and-adverse-perinatal-outcomes
#19
Lorene A Temming, Jeffrey M Dicke, Molly J Stout, Roxane M Rampersad, George A Macones, Methodius G Tuuli, Alison G Cahill
OBJECTIVE: To estimate the risk of adverse perinatal outcomes among women with isolated fetal growth restriction from 17 to 22 weeks of gestation. METHODS: This was a retrospective cohort study of all singleton, nonanomalous pregnancies undergoing ultrasonography to assess fetal anatomy between 17 and 22 weeks of gestation at a single center from 2010 to 2014. After excluding patients with fetal structural malformations, chromosomal abnormalities, or identified infectious etiologies, we compared perinatal outcomes between pregnancies with and without fetal growth restriction, defined as estimated fetal weight less than the 10th percentile for gestational age...
October 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28868266/evaluation-of-placental-mir-155-5p-and-long-non-coding-rna-sone-expression-in-patients-with-severe-pre-eclampsia
#20
Faezeh Azizi, Soraya Saleh Gargari, Sedigheh Asadi Shahmirzadi, Fatemeh Dodange, Vahid Amiri, Reza Mirfakhraie, Mir Davood Omrani
It has been well documented that preeclampsia (PE) has a common etiological background, but little is known about its linkage at the molecular level.Non- coding RNAs are critical posttranscriptional regulators ofgene expression. This study was performed to determine whether PE is associated with alterations in placental non-coding RNAs expression. MicroRNA (miR)-155-5p and long non-coding RNA (lnc)sONE expression, in placentas collected sequentially from 59 patients with PE and 40 normotensive pregnancies were measured using real-time PCR...
2017: International Journal of Molecular and Cellular Medicine
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