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placental oxidative stress

Yuko Arita, Michael Kirk, Neha Gupta, Ramkumar Menon, Darios Getahun, Morgan R Peltier
OBJECTIVE: Tributyltin (TBT) is a persistent pollutant but its effects on placental function are poorly understood as are its possible interactions with infection. We hypothesized that TBT alters the production of sex hormones and biomarkers for inflammation and neurodevelopment in an infection-dependent manner. METHODS: Placental explant cultures were treated with 0-5000 nM TBT in the presence and absence of Escherichia coli. A conditioned medium was harvested and concentrations of steroids (progesterone, P4; testosterone, T and estradiol, E2) as well as biomarkers of inflammation [interleukin (IL)-1β (IL-1β), tumor necrosis factor (TNF-α), IL-10, IL-6, soluble glycoprotein 130 (sgp-130) and heme oxygenase-1 (HO-1)], oxidative stress [8-iso-prostaglandin (8-IsoP)] and neurodevelopment [brain-derived neurotrophic factor (BDNF)] were quantified...
March 15, 2018: Journal of Perinatal Medicine
Eva Nüsken, Jörg Dötsch, Lutz T Weber, Kai-Dietrich Nüsken
Chronic kidney disease affects more than 10% of the population. Programming studies have examined the interrelationship between environmental factors in early life and differences in morbidity and mortality between individuals. A number of important principles has been identified, namely permanent structural modifications of organs and cells, long-lasting adjustments of endocrine regulatory circuits, as well as altered gene transcription. Risk factors include intrauterine deficiencies by disturbed placental function or maternal malnutrition, prematurity, intrauterine and postnatal stress, intrauterine and postnatal overnutrition, as well as dietary dysbalances in postnatal life...
2018: Frontiers in Pediatrics
C L Depoix, F Haegemann, F Debiève, C Hubinont
STUDY QUESTION: Is 8% O2 a better percentage of atmospheric oxygen for long-term cultures of human primary term cytotrophoblasts than the conventional 21% O2 traditionally used in cell culture? SUMMARY ANSWER: Human primary term cytotrophoblasts are able to differentiate into syncytiotrophoblasts under both atmospheric oxygen levels. WHAT IS KNOWN ALREADY: Cell culture is traditionally done under 21% O2, which is equal to a pO2 of ~160 mm Hg...
March 9, 2018: Molecular Human Reproduction
Burak Asiltas, Esma Surmen-Gur, Gurkan Uncu
OBJECTIVE: Early diagnosis of preeclampsia (PE) is very important and various parameters, individually or in combined models, are reported useful for prediction of PE. The objective of this study is to investigate the predictive value of pregnancy-associated plasma protein-A (PAPP-A), placental protein-13 (PP-13), human Chorionic Gonadotropin (B-HCG), and oxidative stress marker malondialdehyde (MDA), individually and in combination. MATERIALS AND METHODS: Maternal sera of 38 cases with PE and 122 controls were collected for first trimester screening and tested for PAPP-A and B-HCG by chemiluminescence, for PP-13 by using ELISA, and for MDA by high-performance liquid chromatography...
February 27, 2018: Pathophysiology: the Official Journal of the International Society for Pathophysiology
Corrine Hanson, Elizabeth Lyden, Jeremy Furtado, Matthew Van Ormer, Marina Schumacher, Ammar Kamil, Elizabeth McGinn, Katherine Rilett, Elizabeth Elliott, Caleb Cave, Rebecca Johnson, Kara Weishaar, Ann Anderson-Berry
BACKGROUND: Oxidative stress has been associated with adverse neonatal outcomes, and vitamin E has powerful anti-oxidant properties. Vitamin E occurs in several different isoforms which differ in their ability to modulate inflammation and oxidative stress. Therefore, the purpose of this study was to evaluate the status of α-, γ- and δ-tocopherol in maternal-infant pairs, and the impact on maternal-newborn outcomes. METHODS: Vitamin E status was evaluated in 189 mother-infant pairs...
February 20, 2018: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
Lutiana Roque Simões, Gustavo Sangiogo, Michael Hikaru Tashiro, Jaqueline S Generoso, Cristiano Julio Faller, Diogo Dominguini, Gustavo Antunes Mastella, Giselli Scaini, Vijayasree Vayalanellore Giridharan, Monique Michels, Drielly Florentino, Fabricia Petronilho, Gislaine Zilli Réus, Felipe Dal-Pizzol, Alexandra I Zugno, Tatiana Barichello
Evidence suggest that prenatal immune system disturbance contributes largely to the pathophysiology of neuropsychiatric disorders. We investigated if maternal immune activation (MIA) could induce inflammatory alterations in fetal brain and pregnant rats. Adult rats subjected to MIA also were investigated to evaluate if ketamine potentiates the effects of infection. On gestational day 15, Wistar pregnant rats received lipopolysaccharide (LPS) to induce MIA. After 6, 12 and 24 h, fetus brain, placenta, and amniotic fluid were collected to evaluate early effects of LPS...
February 10, 2018: Journal of Psychiatric Research
Jossimara Polettini, Lauren S Richardson, Ramkumar Menon
OBJECTIVE: A physiologic increase of reactive oxygen species (ROS) is observed through pregnancy. ROS-induced damage to major cellular elements, specifically protein peroxidation, can lead to fetal and placental tissue senescence and inflammation often associated with normal parturition. The purpose of this study was to examine the effects of oxidative stress (OS) in inducing changes in proteins, senescence, and sterile inflammation in pregnant mice. METHODS: CD-1 mice (n = 5/group) on day 14 of gestation were subjected to minilaparotomy and the uterine horn between gestational sacs was injected with the following: saline (control), cigarette smoke extract (CSE) CSE diluted in saline and CSE + SB 203580 (SB) (a p38 mitogen-activated protein kinase (MAPK) inhibitor)...
March 2018: Placenta
Dominique Mannaerts, Ellen Faes, Jan Gielis, Emeline Van Craenenbroeck, Paul Cos, Marc Spaanderman, Wilfried Gyselaers, Jerome Cornette, Yves Jacquemyn
BACKGROUND: Pre-eclampsia (PE) is related to an impaired endothelial function. Endothelial dysfunction accounts for altered vascular reactivity, activation of the coagulation cascade and loss of vascular integrity. Impaired endothelial function originates from production of inflammatory and cytotoxic factors by the ischemic placenta and results in systemic oxidative stress (OS) and an altered bioavailability of nitric oxide (•NO). The free radical •NO, is an endogenous endothelium-derived relaxing factor influencing endothelial function...
February 27, 2018: BMC Pregnancy and Childbirth
Dora Baczyk, Melanie C Audette, Etienne Coyaud, Brian Raught, John C Kingdom
SUMOylation is a dynamic, reversible post-translational modification that regulates cellular protein stability and localization. SUMOylation occurs in response to various stressors, including hypoxia and inflammation, features common in the obstetrical condition of pre-eclampsia. SUMO isoforms 1-4 have recently been identified in the human placenta, however less is known about their role in response to pre-eclamptic stress. We hypothesized that SUMOylation components have a unique spatiotemporal distribution during placental development and that their subcellular localization can be further modulated by extra-cellular stressors...
February 21, 2018: Journal of Physiology
Qinyin Deng, Nanlin Yin, Ying Chen, Nan Shan, Xiru Liu, Hongbo Qi
OBJECTIVE: Many studies have confirmed that N-acetylglucosaminyltransferase III (GnT-III) is correlated with tumor invasion and metastasis. However, the expression of GnT-III and its role in normal pregnancy and preeclampsia (PE) has not been reached. So the primary objective of this study is to determine GnT-III expression in normal pregnancy and whether its expression is vulnerable to oxidative stress in the trophoblast cells. METHODS: Human first trimester villous tissues from normal pregnancies and third trimester placentas from pregnancies with or without preeclampsia (PE) were used for the detection of GnT-III expression...
February 21, 2018: Journal of Maternal-fetal & Neonatal Medicine
Najate Achamrah, Agnès Ditisheim
PURPOSE OF REVIEW: Although not fully understood, the physiopathology of preeclampsia is thought to involve abnormal placentation, diffuse endothelial cell dysfunction and increased systemic inflammation. As micronutrients play a key role in placental endothelial function, oxidative stress and expression of angiogenic factors, periconceptional micronutrient supplementation has been proposed to reduce the risk of preeclampsia. However, recent studies reported conflicting results. RECENT FINDINGS: Calcium intake (>1 g/day) may reduce the risk of preeclampsia in women with low-calcium diet...
February 19, 2018: Current Opinion in Clinical Nutrition and Metabolic Care
Stephanie Skuby Chassen, Veronique Ferchaud-Roucher, Madhulika B Gupta, Thomas Jansson, Theresa L Powell
Fatty acids (FA) are critical for fetal brain development and are transferred across the placenta by membrane-bound FA transport proteins (FATP), translocases (FAT/CD36) and cytosolic binding proteins (FABP). The cytosolic protein perilipin-2 aids in neutral lipid storage within lipid droplets. Decreased placental nutrient transport is believed to contribute to intrauterine growth restriction (IUGR); however, IUGR placental lipid transport and metabolism are poorly understood. We hypothesized protein expression of FATPs, FABPs, and perilipin-2 in human placenta is decreased and placental lipid content and incorporation into lipid classes are reduced in IUGR...
February 20, 2018: Clinical Science (1979-)
Jaqueline Vieira Carletti, Ana Correia-Branco, Claudia Raquel Silva, Nelson Andrade, Lenir Orlandi Pereira Silva, Fátima Martel
Preeclampsia is a pregnancy disorder characterized by maternal blood pressure, fetal growth restriction and intrauterine hypoxia. Folic acid is a vitamin required during pregnancy. In this work, we investigated the relationship between preeclampsia and the intake of distinct doses of folic acid during pregnancy. Considering that preeclampsia is associated with increased placental oxidative stress levels, we investigated the effect of oxidative stress induced by tert-butylhydroperoxide (TBH) in human trophoblast-derived cells cultured upon deficient/low, physiological and supra-physiological folic acid levels...
February 6, 2018: Reproductive Toxicology
Yingchun Liu, Hui Li, Qila Sha, Rihan Hai, Ying Wang, Yanfeng Song, Feng Gao
This study investigated the effects of maternal undernutrition on the growth, development and antioxidant status of ovine placentome subtypes during late pregnancy. Eighteen time-mated Mongolian ewes with singleton fetuses were allocated to three groups at d 90 of pregnancy: Restricted Group 1 (RG1, 0.18 MJ ME · kg BW-0.75 · d-1, n = 6), Restricted Group 2 (RG2, 0.33 MJ ME · kg BW-0.75 · d-1, n = 6) and Control Group (CG, ad libitum, 0.67 MJ ME · kg BW -0.75 · d -1, n = 6). All animals were supplied chopped hay during the restriction period...
January 11, 2018: Theriogenology
Min Shang, Xu Dong, Lin Hou
AIM: We have shown that some markers of oxidative stress were higher in women with gestational diabetes mellitus (GDM). This study examines the relationship between adipokines and oxidative stress and their potential effects in pregnant women. METHODS: Three markers of oxidative stress (malondialdehyde, 8-isoprostane and xanthine oxidase) and three adipokines (leptin, adiponectin and resistin) were measured in maternal plasma, cord plasma and placenta of 208 pregnant women...
February 5, 2018: Journal of Obstetrics and Gynaecology Research
Metehan Uzun, Meryem Gencer, Hakan Turkon, Rahime Ozlem Oztopuz, Ufuk Demir, Mehmet Akif Ovali
No abstract text is available yet for this article.
January 31, 2018: Archives of Medical Research
Sánchez-Santos A, Martínez-Hernández Mg, Contreras-Ramos A, Ortega-Camarillo C, Baiza-Gutman LA
During embryo implantation, the outer layer of the blastocyst interacts with the endometrium giving rise to the development of the trophoblast cell lineage. The cells in this lineage participate in the penetration of endometrium due to their motility and invasive properties. The mechanisms that regulate the differentiation and invasive ability of these cells are essential for the establishment and maintenance of an efficient exchange between maternal and fetal tissues during pregnancy. In this context, hyperglycemia can induce oxidative stress causing alterations in the placenta...
February 2, 2018: Molecular Reproduction and Development
Denise C Cornelius
Preeclampsia (PE) affects 5% to 7% of pregnant women each year worldwide, accounts for up to 18% of maternal deaths in the United States each year, and is the number 1 cause of premature births. Preeclampsia is associated with hypertension after the 20th week of gestation with or without proteinuria, in conjunction with fetal growth restriction, maternal endothelial dysfunction, and chronic immune activation. The mechanisms leading to the development of PE are unclear. However, it is thought that shallow trophoblast invasion and insufficient remodeling of uterine spiral arteries result in placental ischemia...
2018: Clinical Medicine Insights. Blood Disorders
Sathish Kumar Natarajan, Jamal A Ibdah
Acute fatty liver of pregnancy (AFLP), a catastrophic illness for both the mother and the unborn offspring, develops in the last trimester of pregnancy with significant maternal and perinatal mortality. AFLP is also recognized as an obstetric and medical emergency. Maternal AFLP is highly associated with a fetal homozygous mutation (1528G>C) in the gene that encodes for mitochondrial long-chain hydroxy acyl-CoA dehydrogenase (LCHAD). The mutation in LCHAD results in the accumulation of 3-hydroxy fatty acids, such as 3-hydroxy myristic acid, 3-hydroxy palmitic acid and 3-hydroxy dicarboxylic acid in the placenta, which are then shunted to the maternal circulation leading to the development of acute liver injury observed in patients with AFLP...
January 22, 2018: International Journal of Molecular Sciences
Victor Hugo Gonçalves-Rizzi, José Sérgio Possomato-Vieira, Regina Aparecida Nascimento, Mayara Caldeira-Dias, Carlos Alan Dias-Junior
Sildenafil has shown nitric oxide (NO)-independent pleiotropic effects, however the mechanisms involved are unclear. We investigated the protective effects of sildenafil against hypertension in pregnancy and feto-placental growth restriction induced by NO inhibition, and if sodium nitrite-derived NO formation influences sildenafil effects. We evaluated the plasmatic levels of NO metabolites, cyclic guanosine monophosphate (cGMP), oxidative stress and myeloperoxidase, which are involved in endothelial dysfunction during hypertension in pregnancy...
January 17, 2018: European Journal of Pharmacology
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