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https://www.readbyqxmd.com/read/29231756/higher-levels-of-circulating-timp-4-in-preeclampsia-is-strongly-associated-with-clinical-parameters-and-microrna
#1
Valéria C Sandrim, Solange Diniz, Nibia Mariana Eleuterio, Karina B Gomes, Luci Maria S Dusse, Ricardo C Cavalli
BACKGROUND: Preeclampsia results in maternal and fetal complications and some studies have reported the role of MMPs and TIMPs in its pathophysiology. Therefore, the aim of this study was to compare plasma TIMP-4 levels in preeclampsia and healthy pregnant; and to correlate these levels with clinical parameters and expression of Let7a-5p (3´UTR post-transcriptionally regulation) Methods: TIMP-4 was measured by ELISA and miR-Let7a-5p expression by qPCR. RESULTS: Elevated plasma TIMP-4 levels in preeclampsia compared to healthy pregnant was found 1450 ± 411 vs...
December 12, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/29230002/deficiency-in-interferon-type-1-receptor-improves-definitive-erythropoiesis-in-klf1-null-mice
#2
Maria Francesca Manchinu, Carla Brancia, Cristian Antonio Caria, Ester Musu, Susanna Porcu, Michela Simbula, Isadora Asunis, Lucia Perseu, Maria Serafina Ristaldi
A key regulatory gene in definitive erythropoiesis is the transcription factor Krüppel-like factor 1 (Klf1). Klf1 null mice die in utero by day 15.5 (E15.5) due to impaired definitive erythropoiesis and severe anemia. Definitive erythropoiesis takes place in erythroblastic islands in mammals. Erythroblastic islands are formed by a central macrophage (Central Macrophage of Erythroblastic Island, CMEI) surrounded by maturating erythroblasts. Interferon-β (IFN-β) is activated in the fetal liver's CMEI of Klf1 null mice...
December 11, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29228658/dna-methylation-landscape-of-hepatoblastomas-reveals-arrest-at-early-stages-of-liver-differentiation-and-cancer-related-alterations
#3
Mariana Maschietto, Tatiane Cristina Rodrigues, André Yoshiaki Kashiwabara, Érica Sara Souza de Araujo, Talita Ferreira Marques Aguiar, Cecilia Maria Lima da Costa, Isabela Werneck da Cunha, Luciana Dos Reis Vasques, Monica Cypriano, Helena Brentani, Silvia Regina Caminada de Toledo, Peter Lees Pearson, Dirce Maria Carraro, Carla Rosenberg, Ana C V Krepischi
Hepatoblastomas are uncommon embryonal liver tumors accounting for approximately 80% of childhood hepatic cancer. We hypothesized that epigenetic changes, including DNA methylation, could be relevant to hepatoblastoma onset. The methylomes of eight matched hepatoblastomas and non-tumoral liver tissues were characterized, and data were validated in an independent group (11 hepatoblastomas). In comparison to differentiated livers, hepatoblastomas exhibited a widespread and non-stochastic pattern of global low-level hypomethylation...
November 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29227009/fetal-liver-injury-ameliorated-by-migration-inhibitory-factor-inhibition-in-a-rat-model-of-acute-pancreatitis-in-pregnancy
#4
Zheng-Da Guo, Liang Zhao, Peng Wang, Wen-Hong Deng, Qiao Shi, Teng Zuo, Yu-Pu Hong, Wei-Xing Wang
AIM: This study was designed to investigate and assess fetal liver injury in a rat model of acute pancreatitis in pregnancy (APIP) as well as its possible mechanisms and potential therapeutic targets. METHODS: The APIP model was induced by sodium taurocholate in Sprague-Dawley rats during the third trimester. ISO-1, a macrophage migration inhibitory factor (MIF) antagonist, was given before the induction of APIP. In addition, sham-operated rats at later gestation were set as controls...
December 11, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/29224111/prenatal-testosterone-programming-of-insulin-resistance-in-the%C3%A2-female-sheep
#5
Muraly Puttabyatappa, Vasantha Padmanabhan
Insulin resistance, a common feature of metabolic disorders such as obesity, nonalcoholic fatty liver disease, metabolic syndrome, and polycystic ovary syndrome, is a risk factor for development of diabetes. Because sex hormones orchestrate the establishment of sex-specific behavioral, reproductive, and metabolic differences, a role for them in the developmental origin of insulin resistance is also to be expected. Female sheep exposed to male levels of testosterone during fetal life serve as an excellent translational model for delineating programming of insulin resistance...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29215608/h19-lncrna-alters-methylation-and-expression-of-hnf4%C3%AE-in-the-liver-of-metformin-exposed-fetuses
#6
Jie Deng, Martin Mueller, Tingting Geng, Yuanyuan Shen, Ya Liu, Peng Hou, Ramanaiah Ramillapalli, Hugh S Taylor, Michael Paidas, Yingqun Huang
Metformin is the most widely used anti-diabetic medication worldwide. However, human and animal studies suggest that prenatal metformin exposure may increase the risk of metabolic disorders in adult offspring, yet the underpinning mechanism remains unclear. Here we report that metformin-exposed mouse fetuses exhibit elevated expression of the H19 long noncoding RNA, which induces hypomethylation and increased expression of hepatocyte nuclear factor 4α (HNF4α). As a transcription factor essential for morphological and functional differentiation of hepatocytes, HNF4α also has an indispensable role in the regulation of expression of gluconeogenic genes...
December 7, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/29208272/biosynthesis-of-cerium-oxide-nanoparticles-and-their-effect-on-lipopolysaccharide-lps-induced-sepsis-mortality-and-associated-hepatic-dysfunction-in-male-sprague-dawley-rats
#7
Guoqiang Chen, Yunfei Xu
The fetal/life challenging Sepsis is an urgent medical disaster which have developed "blood poisoning". The sepsis is one of the disorders of organs which cause death in patients. The investigational models that mimicchemical change of sepsis in human bodywereessential. We have synthesized CeO2 NPs using eco-friendly method using plant extract. The characterization of synthesized CeO2 NPs was studied using UV-Vis, FTIR, XRD, SEM, EDX and TEM analysis. The results were confirmed that the synthesized CeO2 was in nano size with spherical shape...
February 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/29202695/single-cell-rna-seq-analysis-reveals-dynamic-trajectories-during-mouse-liver-development
#8
Xianbin Su, Yi Shi, Xin Zou, Zhao-Ning Lu, Gangcai Xie, Jean Y H Yang, Chong-Chao Wu, Xiao-Fang Cui, Kun-Yan He, Qing Luo, Yu-Lan Qu, Na Wang, Lan Wang, Ze-Guang Han
BACKGROUND: The differentiation and maturation trajectories of fetal liver stem/progenitor cells (LSPCs) are not fully understood at single-cell resolution, and a priori knowledge of limited biomarkers could restrict trajectory tracking. RESULTS: We employed marker-free single-cell RNA-Seq to characterize comprehensive transcriptional profiles of 507 cells randomly selected from seven stages between embryonic day 11.5 and postnatal day 2.5 during mouse liver development, and also 52 Epcam-positive cholangiocytes from postnatal day 3...
December 4, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29198728/flumioxazin-metabolism-in-pregnant-animals-and-cell-based-protoporphyrinogen-ix-oxidase-ppo-inhibition-assay-of-fetal-metabolites-in-various-animal-species-to-elucidate-the-mechanism-of-the-rat-specific-developmental-toxicity
#9
Jun Abe, Naohiko Isobe, Kazuki Mikata, Hirohisa Nagahori, Yoshikazu Naito, Hideo Saji, Masahiro Ono, Satoshi Kawamura
Flumioxazin, an N-phenylimide herbicide, inhibits protoporphyrinogen oxidase (PPO), a key enzyme in heme biosynthesis in mammals, and causes rat-specific developmental toxicity. The mechanism has mainly been clarified, but no research has yet focused on the contribution of its metabolites. We therefore conducted in vivo metabolism studies in pregnant rats and rabbits, and found 6 major known metabolites in excreta. There was no major rat-specific metabolite. The most abundant component in rat fetuses was APF, followed by flumioxazin and 5 identified metabolites...
November 30, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29194124/humanized-mouse-models-to-study-pathophysiology-and-treatment-of-hiv-infection
#10
Guillemette Masse-Ranson, Hugo Mouquet, James P Di Santo
PURPOSE OF REVIEW: Immunodeficient mice that lack all lymphocyte subsets and have phagocytic cells that are tolerant of human cells can be stably xenografted with human hematopoietic stem cell as well as other human tissues (fetal liver and thymus) creating 'human immune system' (HIS) mice. HIS mice develop all major human lymphocyte classes (B, T, natural killer, and innate lymphoid cell) and their specialized subsets as well as a variety of myeloid cells (dendritic cell, monocytes, and macrophages) thereby providing a small animal model in which to interrogate human immune responses to infection...
November 30, 2017: Current Opinion in HIV and AIDS
https://www.readbyqxmd.com/read/29191195/maternal-dietary-free-or-bound-fructose-diversely-influence-developmental-programming-of-lipogenesis
#11
Armagan Aytug Yuruk, Reyhan Nergiz-Unal
BACKGROUND: Maternal dietary choices throughout preconception, pregnancy, and lactation irreversibly affect the development of fetal tissues and organs, known as fetal programming. Recommendations tend to emphasize reducing added sugars. However, the impact of maternal dietary free or bound fructose in added sugars on developmental programming of lipogenesis is unknown. METHODS: Virgin Sprague-Dawley rats were randomly divided into five groups. Rats were given feed and plain water (control) or water containing maltodextrin (vehicle), fructose, high-fructose corn syrup (HFCS) containing 55% fructose, sucrose (20% w/v) for 12 weeks before mating and throughout the pregnancy and lactation periods...
December 1, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/29186286/obesity-induced-changes-in-hepatic-and-placental-clock-gene-networks-in-rat-pregnancy
#12
Rachael C Crew, Brendan J Waddell, Peter J Mark
Maternal obesity induces pregnancy complications and disturbs fetal development, but the specific mechanisms underlying these outcomes are unclear. Circadian rhythms are implicated in metabolic complications associated with obesity, and maternal metabolic adaptations to pregnancy. Accordingly, obesity-induced circadian dysfunction may drive adverse outcomes in obese pregnancy. This study investigated whether maternal obesity alters the rhythmic expression of clock genes and associated nuclear receptors across maternal, fetal and placental tissues...
November 25, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29185370/effect-of-nicotine-on-placental-ischemia-induced-complement-activation-and-hypertension-in-the-rat
#13
Connor F Laule, Cameron R Wing, Evan J Odean, Jacob A Wilcox, Jeffrey S Gilbert, Jean F Regal
Preeclampsia is a pregnancy-specific condition manifested by new-onset maternal hypertension with systemic inflammation, including increased innate immune system complement activation. While exact pathophysiology is unknown, evidence suggests that inadequate spiral artery invasion and resulting utero-placental insufficiency is the initiating event. Cigarette smoking during pregnancy decreases the risk of preeclampsia. Nicotine, a major component of cigarettes, stimulates the efferent cholinergic anti-inflammatory pathway through peripherally expressed nicotinic acetylcholine receptors (nAChR) and is known to attenuate ischemia-reperfusion injury in kidney and liver...
December 2017: Journal of Immunotoxicology
https://www.readbyqxmd.com/read/29181841/epidural-therapy-for-the-treatment-of-severe-pre-eclampsia-in-non-labouring-women
#14
REVIEW
Amita Ray, Sujoy Ray
BACKGROUND: Pre-eclampsia is a pregnancy-specific multi-organ disorder, which is characterised by hypertension and multisystem organ involvement and which has significant maternal and fetal morbidity and mortality. Failure of the placental vascular remodelling and reduced uteroplacental flow form the etiopathological basis of pre-eclampsia. There are several established therapies for pre-eclampsia including antihypertensives and anticonvulsants. Most of these therapies aim at controlling the blood pressure or preventing complications of elevated blood pressure, or both...
November 28, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29177978/zinc-deficiency-as-a-mediator-of-toxic-effects-of-alcohol-abuse
#15
REVIEW
Anatoly V Skalny, Margarita G Skalnaya, Andrei R Grabeklis, Anastasia A Skalnaya, Alexey A Tinkov
OBJECTIVE: To review data on the role of ethanol-induced alteration of Zn homeostasis in mediation of adverse effects of alcohol abuse. METHODS: The scholarly published articles on the association between Zn metabolism and alcohol-associated disorders (liver, brain, lung, gut dysfunction, and fetal alcohol syndrome) have been reviewed. RESULTS: It is demonstrated that alcohol-induced modulation of zinc transporters results in decreased Zn levels in lungs, liver, gut, and brain...
November 24, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/29169084/changes-in-first-trimester-fetal-cyp1a1-and-ahrr-dna-methylation-and-mrna-expression-in-response-to-exposure-to-maternal-cigarette-smoking
#16
Svetlana Fa, Trine Vilsbøll Larsen, Katrine Bilde, Tina F Daugaard, Emil H Ernst, Karin Lykke-Hartmann, Rasmus H Olesen, Linn S Mamsen, Erik Ernst, Agnete Larsen, Anders L Nielsen
Prenatal exposure to maternal cigarette smoking increases the risk of intrauterine growth retardation, adverse pregnancy outcomes, and diseases later in life. Exposure can result in postnatal global and gene-specific DNA methylation changes, with the latter well documented for the CYP1A1 and AHRR genes involved in the detoxification of xenobiotic substances. This study assessed the impact of exposure to maternal smoking on first trimester fetal CYP1A1 and AHRR mRNA expression and DNA methylation for CpG-sites displaying maternal smoking during pregnancy-mediated methylation changes at birth...
November 16, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/29167412/phosphatidylethanolamine-methyltransferase-%C3%AE-6-desaturase-and-palmitoyldocosahexaenoyl-phosphatidylcholine-are-increased-in-rats-during-pregnancy
#17
Alan Chalil, Alex P Kitson, Juan J Aristizabal Henao, Kristin A Marks, Jason L Elzinga, Daniel M E Lamontagne-Kam, Daniel Chalil, Flavia Badoud, David M Mutch, Ken D Stark
Docosahexaenoic acid (DHA) is important for fetal neurodevelopment. During pregnancy, maternal plasma DHA increases, but the mechanism is not fully understood. Using rats fed a fixed-formula diet (DHA as 0.07% total energy), plasma and liver were collected for fatty acid profiling before pregnancy, at 15 and 20 days of pregnancy, and 7 days postpartum. Phosphatidylethanolamine methyltransferase (PEMT) and enzymes involved in polyunsaturated fatty acid synthesis were examined in liver. Ad hoc transcriptomic and lipidomic analyses were also performed...
November 22, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/29166957/dha-supplementation-during-pregnancy-as-phospholipids-or-tag-produces-different-placental-uptake-but-similar-fetal-brain-accretion-in-neonatal-piglets
#18
Antonio Gázquez, María Ruíz-Palacios, Elvira Larqué
The great variety of n-3 long-chain PUFA sources raises the question of the most adequate for using as a DHA supplement during pregnancy. Placental and fetal availability of different DHA sources remains unclear. We investigated DHA availability in maternal lipoproteins, placenta and fetal tissues in pregnant sows fed DHA as phospholipid (PL) or TAG to identify the best DHA source during this period. Pregnant Iberian sows were fed diets containing 0·8 % DHA of total fatty acids as PL from egg yolk or TAG from algae oil during the last third of gestation (40 d)...
November 23, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/29164089/pulmonary-hypoplasia-caused-by-fetal-ascites-in-congenital-cytomegalovirus-infection-despite-fetal-therapy
#19
Kazumichi Fujioka, Ichiro Morioka, Kosuke Nishida, Mayumi Morizane, Kenji Tanimura, Masashi Deguchi, Kazumoto Iijima, Hideto Yamada
We report two cases of pulmonary hypoplasia due to fetal ascites in symptomatic congenital cytomegalovirus (CMV) infections despite fetal therapy. The patients died soon after birth. The pathogenesis of pulmonary hypoplasia in our cases might be thoracic compression due to massive fetal ascites as a result of liver insufficiency. Despite aggressive fetal treatment, including multiple immunoglobulin administration, which was supposed to diminish the pathogenic effects of CMV either by neutralization or immunomodulatory effects, the fetal ascites was uncontrollable...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29163647/comparison-of-diagnostic-tests-for-the-detection-of-bovine-brucellosis-in-the-natural-cases-of-abortion
#20
V Mahajan, H S Banga, G Filia, M P Gupta, K Gupta
Rapid and precise diagnosis in natural field cases of bovine abortion caused by Brucella abortus warrants the use of the most sensitive and reliable diagnostic methods. In the present study, bacterial isolation, serology, gross, histopathology, immunohistochemistry and polymerase chain reaction technique(s) were applied. Sero-prevalence studies showed the rate of 28.86% positive cases using the competitive ELISA. Histopathological changes were mainly seen in the placenta, fetal lungs, kidney, liver and spleen...
2017: Iranian Journal of Veterinary Research
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