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https://www.readbyqxmd.com/read/28926727/early-pregnancy-intrauterine-fetal-exposure-to-maternal-smoking-and-impact-on-fetal-telomere-length
#1
Hooman Mirzakhani, Immaculata De Vivo, J Steven Leeder, Roger Gaedigk, Carrie A Vyhlidal, Scott T Weiss, Kelan Tantisira
BACKGROUND: Reduced telomere length, or its accelerated attrition, has been implicated in aging, mortality, and several human diseases, including respiratory diseases. Age dependent manifestation of telomere-mediated disease during life span indicates the role of developmental stage in these diseases and highlights the importance of fetal developmental process in utero and at earlier life stages. Environmental determinants during developmental and later stages of life could affect telomere length...
September 14, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28924318/pre-eclampsia-molecular-events-to-biomarkers
#2
REVIEW
Kavita Sahai, Seema Saraswathy, Tribhuvan Pal Yadav, Devendra Arora, Manu Krishnan
Pre-eclampsia is a hypertensive disorder in pregnancy, which accounts for 10-15% of the maternal and perinatal mortality worldwide. Abnormal placental development and tissue hypoxia are its main etiologic factors. The present diagnostic methods of blood pressure monitoring and renal function evaluation are insufficient in the early detection of pre-eclampsia. Since molecular events portent well ahead of the disease onset, biomarker research for the early diagnosis of pre-eclampsia has recently generated ambitious clinical targets...
April 2017: Medical Journal, Armed Forces India
https://www.readbyqxmd.com/read/28923016/5-hydroxymethylcytosine-is-highly-dynamic-across-human-fetal-brain-development
#3
Helen Spiers, Eilis Hannon, Leonard C Schalkwyk, Nicholas J Bray, Jonathan Mill
BACKGROUND: Epigenetic processes play a key role in orchestrating transcriptional regulation during the development of the human central nervous system. We previously described dynamic changes in DNA methylation (5mC) occurring during human fetal brain development, but other epigenetic processes operating during this period have not been extensively explored. Of particular interest is DNA hydroxymethylation (5hmC), a modification that is enriched in the human brain and hypothesized to play an important role in neuronal function, learning and memory...
September 18, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28921852/genome-wide-cell-free-fetal-dna-screening-spots-variations-standard-screening-doesn-t-diagnostic-testing-data-needed-to-validate-results-and-prove-accuracy
#4
(no author information available yet)
No abstract text is available yet for this article.
October 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28921714/fetal-microchimerism-in-human-brain-tumors
#5
Lauren Broestl, Joshua B Rubin, Sonika Dahiya
Sex differences in cancer incidence and survival, including central nervous system tumors, are well documented. Multiple mechanisms contribute to sex differences in health and disease. Recently, the presence of fetal-in-maternal microchimeric cells has been shown to have prognostic significance in breast and colorectal cancers. The frequency and potential role of these cells has not been investigated in brain tumors. We therefore selected two common primary adult brain tumors for this purpose: meningioma, which is sex hormone responsive and has a higher incidence in women, and glioblastoma, which is sex hormone independent and occurs more commonly in men...
September 18, 2017: Brain Pathology
https://www.readbyqxmd.com/read/28894161/microbial-communities-in-placentas-from-term-normal-pregnancy-exhibit-spatially-variable-profiles
#6
Lindsay A Parnell, Catherine M Briggs, Bin Cao, Omar Delannoy-Bruno, Andrew E Schrieffer, Indira U Mysorekar
The placenta is the principal organ nurturing the fetus during pregnancy and was traditionally considered to be sterile. Recent work has suggested that the placenta harbours microbial communities, however the location and possible function of these microbes remain to be confirmed and elucidated. Here, we employed genomic DNA sequencing of multiple variable (V) regions of the bacterial 16S ribosomal gene, to interrogate microbial profiles in term pregnancies, from the basal plate, which is in direct contact with maternal uterine, endothelial, and immune cells; placental villi, which are bathed in maternal blood, and fetal membranes, which encapsulate the amniotic cavity...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28893949/timing-of-adrenal-regression-controlled-by-synergistic-interaction-between-sf1-sumoylation-and-dax1
#7
Yewei Xing, Ken-Ichirou Morohashi, Holly A Ingraham, Gary D Hammer
The nuclear receptor steroidogenic factor 1 (Sf1, Nr5a1, Ad4bp) is critical for formation, development and function of steroidogenic tissues. A fetal adrenal enhancer (FAdE) in the Sf1 gene was previously identified to direct Sf1 expression exclusively in the fetal adrenal cortex and is bound by both Sf-1 and Dax1. Here, we examined the function of Sf1 SUMOylation and its interaction with Dax1 on FAdE function. A diffused prolonged pattern of FAdE expression and delayed regression of the postnatal fetal cortex (X-zone) were detected in both the SUMOylation deficient-Sf1(2KR/2KR) and Dax1 knockout mouse lines, with FAdE expression/activity retained in the postnatal 20αHSD positive postnatal X-zone cells...
September 11, 2017: Development
https://www.readbyqxmd.com/read/28893253/a-novel-swine-model-for-evaluation-of-dyslipidemia-and-atherosclerosis-induced-by-human-cetp-overexpression
#8
Tao Chen, Meng Sun, Jia-Qiang Wang, Jin-Jin Cui, Zhong-Hua Liu, Bo Yu
BACKGROUND: The mechanism of cholesteryl ester transfer protein (CETP) in lipid metabolism is still unclear. Furthermore, the relationship of CETP and atherosclerosis (AS) has been controversial. As pigs are a good model for both lipid and AS research, we investigated the lipid metabolism of human CETP (hCETP) transgenic pigs and explored the mechanism of CETP in lipid modulation. METHODS: Plasmids expressing the hCETP gene were designed, successfully constructed, and transfected into porcine fetal fibroblasts by liposomes...
September 11, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28888041/supplementation-with-the-methyl-donor-betaine-prevents-congenital-defects-induced-by-prenatal-alcohol-exposure
#9
Ganga Karunamuni, Megan M Sheehan, Yong Qiu Doughman, Shi Gu, Jiayang Sun, Youjun Li, James P Strainic, Andrew M Rollins, Michael W Jenkins, Michiko Watanabe
BACKGROUND: Despite decades of public education about dire consequences of prenatal alcohol exposure, drinking alcohol during pregnancy remains prevalent. As high as 40% of live-born infants exposed to alcohol during gestation and diagnosed with Fetal Alcohol Syndrome have congenital heart defects that can be life-threatening. In animal models, the methyl donor betaine, found in foods such as wheat bran, quinoa, beets and spinach, ameliorated neurobehavioral deficits associated with prenatal alcohol exposure (PAE) but effects on heart development are unknown...
September 9, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28884679/the-integration-of-a-macrophage-adapted-live-vaccine-strain-of-equine-infectious-anaemia-virus-eiav-in-the-horse-genome
#10
Qiang Liu, Xue-Feng Wang, Cheng Du, Yue-Zhi Lin, Jian Ma, Yu-Hong Wang, Jian-Hua Zhou, Xiaojun Wang
Integration is an important feature of retroviruses and retrovirus-based therapeutic transfection vectors. The non-primate lentivirus equine infectious anaemia virus (EIAV) primarily targets macrophages/monocytes in vivo. Investigation of the integration features of EIAVDLV121 strains, which are adapted to donkey monocyte-derived macrophages (MDMs), is of great interest. In this study, we analysed the integration features of EIAVDLV121 in equine MDMs during in vitro infection. Our previously published integration sites (IS) for EIAVFDDV13 in fetal equine dermal (FED) cells were also analysed in parallel as references...
September 7, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28884630/fetal-and-placental-dna-stimulation-of-tlr9-a-mechanism-possibly-contributing-to-the-pro-inflammatory-events-during-parturition
#11
Ilona Telefus Goldfarb, Sharareh Adeli, Tucker Berk, Mark Phillippe
INTRODUCTION: While there is evidence for a relationship between cell-free fetal DNA (cffDNA) and parturition, questions remain regarding whether cffDNA could trigger a pro-inflammatory response on the pathway to parturition. We hypothesized that placental and/or fetal DNA stimulates toll-like receptor 9 (TLR9) leading to secretion of pro-inflammatory cytokines by macrophage cells. METHODS: Four in vitro DNA stimulation studies were performed using RAW 264.7 mouse peritoneal macrophage cells incubated in media containing the following DNA particles: an oligodeoxynucleotide (ODN2395), intact genomic DNA (from mouse placentas, fetuses and adult liver), mouse DNA complexed with DOTAP (a cationic liposome forming compound), and telomere-depleted mouse DNA...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28881392/on-the-road-to-replacing-invasive-testing-with-cell-based-nipt-five-clinical-cases-with-aneuploidies-microduplication-unbalanced-structural-rearrangement-or-mosaicism
#12
Else Marie Vestergaard, Ripudaman Singh, Palle Schelde, Lotte Hatt, Katarina Ravn, Rikke Christensen, Dorte Launholt Lildballe, Olav Bjørn Petersen, Niels Uldbjerg, Ida Vogel
OBJECTIVE: Trophoblastic fetal cells harvested from maternal blood have the capacity to be used for copy number analyses in a non-invasive prenatal test (cbNIPT). Potentially this will result in increased resolution for detection of subchromosomal aberrations due to high quality DNA not intermixed with maternal DNA. We present five selected clinical cases from first trimester pregnancies where cbNIPT was used to demonstrate a wide range of clinically relevant aberrations. METHOD: Blood samples were collected from high risk pregnancies in gestational week 12+1 to 12+5...
September 7, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28881030/the-association-between-anticoagulation-therapy-maternal-characteristics-and-a-failed-cfdna-test-due-to-a-low-fetal-fraction
#13
Whitney Burns, Nathanael Koelper, Andrea Barberio, Mary DeAgostino-Kelly, Michael Mennuti, Mary D Sammel, Lorraine Dugoff
OBJECTIVES: The objective of this study was to identify maternal characteristics associated with a failed cell-free DNA (cfDNA) test due to a low fetal fraction (FF). METHOD: Retrospective cohort study of women with singleton pregnancies who had cfDNA screening at 10-25 weeks gestation between October 2011 and January 2016. cfDNA screening was performed using methylation techniques until October 2013; thereafter, samples were run with massively parallel sequencing...
September 7, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28880867/oral-tetrahydrouridine-and-decitabine-for-non-cytotoxic-epigenetic-gene-regulation-in-sickle-cell-disease-a-randomized-phase-1-study
#14
RANDOMIZED CONTROLLED TRIAL
Robert Molokie, Donald Lavelle, Michel Gowhari, Michael Pacini, Lani Krauz, Johara Hassan, Vinzon Ibanez, Maria A Ruiz, Kwok Peng Ng, Philip Woost, Tomas Radivoyevitch, Daisy Pacelli, Sherry Fada, Matthew Rump, Matthew Hsieh, John F Tisdale, James Jacobberger, Mitch Phelps, James Douglas Engel, Santhosh Saraf, Lewis L Hsu, Victor Gordeuk, Joseph DeSimone, Yogen Saunthararajah
BACKGROUND: Sickle cell disease (SCD), a congenital hemolytic anemia that exacts terrible global morbidity and mortality, is driven by polymerization of mutated sickle hemoglobin (HbS) in red blood cells (RBCs). Fetal hemoglobin (HbF) interferes with this polymerization, but HbF is epigenetically silenced from infancy onward by DNA methyltransferase 1 (DNMT1). METHODS AND FINDINGS: To pharmacologically re-induce HbF by DNMT1 inhibition, this first-in-human clinical trial (NCT01685515) combined 2 small molecules-decitabine to deplete DNMT1 and tetrahydrouridine (THU) to inhibit cytidine deaminase (CDA), the enzyme that otherwise rapidly deaminates/inactivates decitabine, severely limiting its half-life, tissue distribution, and oral bioavailability...
September 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28879539/synergistic-effect-of-two-%C3%AE-globin-gene-cluster-mutations-leading-to-the-hereditary-persistence-of-fetal-hemoglobin-hpfh-phenotype
#15
Priya Hariharan, Madhavi Sawant, Manju Gorivale, Ruma Manchanda, Roshan Colah, K Ghosh, Anita Nadkarni
Co-inheritance of gamma and beta globin gene mutations in a compound heterozygous state is rare but of clinical interest as it provides an important data on understanding the HbF expression. Hematological analysis was carried out (Sysmex KX-21). F-cells were enumerated using flow cytometry. Beta globin gene was analysed by CRDB technique and by DNA sequencing. Gamma globin promoter region was sequenced and expression studies were carried out using real time Taqman assay. We report a family, where two inherited defects of the β globin gene cluster segregate...
September 6, 2017: Molecular Biology Reports
https://www.readbyqxmd.com/read/28873022/seroprevalence-of-leptospirosis-brucellosis-and-q-fever-in-a-wild-red-deer-cervus-elaphus-population-kept-in-a-fenced-reserve-in-absence-of-contact-with-livestock
#16
Jose María San-Miguel Ayanz, Francisco Javier Garcia-Peña, Paula García-Lunar, Luis Miguel Ortega-Mora, María José Ruano, Gema Álvarez-García, Esther Collantes-Fernández
Wildlife health is of interest for public and animal health because wild animals have been identified as important sentinels for the surveillance for zoonotic pathogens. This work investigated Brucella spp., Coxiella burnetii, and Leptospira spp. infection seroprevalence in a free-ranging red deer population. The study was conducted in a fenced reserve with controlled hunting activity in central Spain with animals that did not have any contact with livestock. Sampling was performed at two time points before and 5 years after the implementation of new management measures, including a reduction in the red deer population in the reserve...
September 5, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28868265/medip-real-time-qpcr-has-the-potential-for-noninvasive-prenatal-screening-of-fetal-trisomy-21
#17
Mohammad Kazemi, Mansoor Salehi, Majid Kheirollahi
This study aimed to verify the reliability of the 7 tissue differentially methylated regions used in the methylated DNA immunoprecipitation (MeDIP) real- time quantitative polymerase chain reaction (real-time qPCR) based approach of fetal DNA in maternal blood to diagnosis of fetal trisomy 21. Forty pregnant women with high risk pregnancy who were referred after first or second trimester screening tests, were selected randomly. For each sample whole DNA extraction (mother and fetus), fragmentation of DNA, immunoprecipitation of methylated DNA and real- time qPCR using 7 primer pairs was performed...
2017: International Journal of Molecular and Cellular Medicine
https://www.readbyqxmd.com/read/28864022/child-neurodevelopmental-outcomes-following-preterm-and-term-birth-what-can-the-placenta-tell-us
#18
REVIEW
Nicolette A Hodyl, Natalie Aboustate, Tina Bianco-Miotto, Claire T Roberts, Vicki L Clifton, Michael J Stark
A significant proportion of children born preterm will experience some level of neurodevelopmental impairment. Changes in placental function have been observed with many antenatal conditions that are risk factors for preterm birth and/or poor neurodevelopment including fetal growth restriction and in-utero inflammation. This review will highlight placental factors that have been studied to understand the underlying mechanisms and identify biomarkers that lead to poor child neurodevelopmental outcomes. These include changes in gross morphological and histopathological structure and the placental inflammatory response to prenatal infection...
September 2017: Placenta
https://www.readbyqxmd.com/read/28864016/effects-of-maternal-diabetes-and-fetal-sex-on-human-placenta-mitochondrial-biogenesis
#19
Shaoning Jiang, April M Teague, Jeanie B Tryggestad, Christopher E Aston, Timothy Lyons, Steven D Chernausek
Abnormal placental function in maternal diabetes affects fetal health and can predispose offspring to metabolic diseases in later life. There are fetal sex-specific differences in placenta structure and gene expression, which may affect placental responses to maternal diabetes. The present study examined the effects of maternal diabetes on indices of mitochondrial biogenesis in placentae from male and female offspring. Mitochondrial DNA (mtDNA) copy number and expression of key regulators of mitochondrial biogenesis were assessed in placentae from 19 diabetic and 23 non-diabetic women...
September 2017: Placenta
https://www.readbyqxmd.com/read/28864012/maternal-obesity-and-gestational-weight-gain-are-modestly-associated-with-umbilical-cord-dna-methylation
#20
Keshari M Thakali, Jennifer B Faske, Arjun Ishwar, Maria P Alfaro, Mario A Cleves, Thomas M Badger, Aline Andres, Kartik Shankar
INTRODUCTION: Maternal obesity (OB) and excessive gestational weight gain (GWG) are strong independent contributors that augment obesity risk in offspring. However, direct evidence of epigenetic changes associated with maternal habitus remains sparse. METHODS: We utilized Bisulfite Amplicon Sequencing (BSAS) to conduct targeted DNA methylation association analysis of maternal obesity and excessive GWG with DNA methylation of select metabolism-related and imprinted genes...
September 2017: Placenta
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