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https://www.readbyqxmd.com/read/28944830/application-of-the-amniotic-fluid-metabolome-to-the-study-of-fetal-malformations-using-down-syndrome-as-a-specific-model
#1
Jun Huang, Jinhua Mo, Guili Zhao, Qiyin Lin, Guanhui Wei, Weinan Deng, Dunjin Chen, Bolan Yu
Although monitoring and diagnosis of fetal diseases in utero remains a challenge, metabolomics may provide an additional tool to study the etiology and pathophysiology of fetal diseases at a functional level. In order to explore specific markers of fetal disease, metabolites were analyzed in two separate sets of experiments using amniotic fluid from fetuses with Down syndrome (DS) as a model. Both sets included 10‑15 pairs of controls and cases, and amniotic fluid samples were processed separately; metabolomic fingerprinting was then conducted using UPLC‑MS...
September 18, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28944474/altered-neural-oscillations-during-multisensory-integration-in-adolescents-with-fetal-alcohol-spectrum-disorder
#2
Alfredo D Bolaños, Brian A Coffman, Felicha T Candelaria-Cook, Piyadasa Kodituwakku, Julia M Stephen
BACKGROUND: Children with fetal alcohol spectrum disorder (FASD), who were exposed to alcohol in utero, display a broad range of sensory, cognitive, and behavioral deficits, which are broadly theorized to be rooted in altered brain function and structure. Based on the role of neural oscillations in multisensory integration from past studies, we hypothesized that adolescents with FASD would show a decrease in oscillatory power during event-related gamma oscillatory activity (30-100Hz), when compared to typically-developing healthy controls (HC), and that such decrease in oscillatory power would predict behavioral performance...
September 25, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28943130/estimation-and-reduction-of-the-radiation-dose-to-the-fetus-from-external-beam-radiotherapy
#3
REVIEW
Michalis Mazonakis, John Damilakis
The appearance of a malignant disease during pregnancy is relatively rare. The use of external-beam radiation therapy is limited to non-pelvic tumors which are usually located above the diaphragm. However, supradiaphragmatic radiotherapy unavoidably exposes the fetus to secondary radiation due to head leakage, scatter from the machine and scatter produced inside the patient. This fetal exposure may be associated with an elevated risk for the development of deterministic harmful effects and/or carcinogenesis...
September 21, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28942678/fetal-programming-of-mental-health-by-acetaminophen-response-to-the-smfm-statement-prenatal-acetaminophen-use-and-adhd
#4
Jørn Olsen, Zeyan Liew
A number of studies indicate that acetaminophen taken during pregnancy may have a programming effect on the fetal brain development. The potential adverse consequences may only surface to clinical detection years later. Should we act on these findings now or do we wait for additional evidence? Areas covered: We argue for action inspired by these well analyzed studies that are based on five prospective cohorts data collected from different countries. Several analytical options have been employed especially to address confounding, and all analyses have consistently suggested that confounding alone is an unlikely explanation for this disturbing observation...
September 23, 2017: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/28940870/assessment-of-cerebral-perfusion-with-contrast-enhanced-ultrasound-during-constriction-of-the-neck-mimicking-malposition-of-the-bd-odon-device%C3%A2-a-study-in-newborn-piglets
#5
C de Lange, O D Saugstad, R Solberg
OBJECTIVE: The BD Odon Device™ is a new instrument for operative vaginal birth with potential for preventing maternal, fetal and newborn morbidity/mortality during a complicated second stage of labour. The device is a plastic sleeve with an air chamber inflated around the baby's head which is gently pulled through the birth canal. The aim was to monitor changes in cerebral circulation during constriction of the neck to evaluate a risk of potential malposition of the device. DESIGN: Randomised prospective study...
September 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28940767/human-mesenchymal-factors-induce-rat-hippocampal-and-human-neural-stem-cell-dependent-oligodendrogenesis
#6
Janusz J Jadasz, Lena Tepe, Felix Beyer, Iria Samper Agrelo, Rainer Akkermann, Lucas-Sebastian Spitzhorn, Maria Elena Silva, Richard O C Oreffo, Hans-Peter Hartung, Alessandro Prigione, Francisco J Rivera, James Adjaye, Patrick Küry
The generation of new oligodendrocytes is essential for adult brain repair in diseases such as multiple sclerosis. We previously identified the multifunctional p57kip2 protein as a negative regulator of myelinating glial cell differentiation and as an intrinsic switch of glial fate decision in adult neural stem cells (aNSCs). In oligodendroglial precursor cells (OPCs), p57kip2 protein nuclear exclusion was recently found to be rate limiting for differentiation to proceed. Furthermore, stimulation with mesenchymal stem cell (MSC)-derived factors enhanced oligodendrogenesis by yet unknown mechanisms...
September 22, 2017: Glia
https://www.readbyqxmd.com/read/28936585/understanding-intestinal-glucose-transporter-expression-in-obese-compared-to-non-obese-subjects
#7
Rebecca A Deal, Yueming Tang, Reid Fletcher, Alfonso Torquati, Philip Omotosho
INTRODUCTION: The impact of Roux-en-Y gastric bypass (RYGB) on weight loss and co-morbid disease resolution is well established. However, the mechanisms underlying the procedure remain incompletely understood. Intestinal remodeling involving glucose transporters (GLUTs) may play a crucial role. Rat studies have demonstrated morphological adaptation of GLUTs within adipose and intestinal cells in association with the reprogramming of glucose metabolism. There is a limited understanding of the variations in expression amongst GLUT family receptors in the human intestine...
September 21, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28935498/are-in-vivo-and-in-vitro-assessments-of-comparative-and-combined-toxicity-of-the-same-metallic-nanoparticles-compatible-or-contradictory-or-both-a-juxtaposition-of-data-obtained-in-respective-experiments-with-nio-and-mn3o4-nanoparticles
#8
Ilzira Minigalieva, Tatiana Bushueva, Eleonore Fröhlich, Claudia Meindl, Kristin Öhlinger, Vladimir Panov, Anatoly Varaksin, Vladimir Shur, Ekaterina Shishkina, Vladimir Gurvich, Boris Katsnelson
Comparative and combined damaging effects of NiO and Mn3O4 nanoparticles were estimated on cultures of several established human cell lines. The cytotoxicity indices used were: (a) reduction in cellular dehydrogenase activity, (b) decrease in the ATP-content, (c) for SH-SY5Y cells also decrease in the tyrosine hydroxylase content. The combined cytotoxicity was modeled using the Response Surface Methodology. When assessing the stability of metal oxide nanoparticles (MeO-NPs) in cultural media used by us, we found that the addition of the fetal bovine serum (FBS) to them renders NiO-NPs and, to even greater extent, Mn3O4-NPs exponentially slow soluble while without FBS their dissolution was virtually undetectable...
September 18, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28933064/the-influence-of-adipose-tissue-on-brain-development-cognition-and-risk-of-neurodegenerative-disorders
#9
Liliana Letra, Isabel Santana
The brain is a highly metabolic organ and thus especially vulnerable to changes in peripheral metabolism, including those induced by obesity-associated adipose tissue dysfunction. In this context, it is likely that the development and maturation of neurocognitive circuits may also be affected and modulated by metabolic environmental factors, beginning in utero. It is currently recognized that maternal obesity, either pre-gestational or gestational, negatively influences fetal brain development and elevates the risk of cognitive impairment and neuropsychiatric disorders in the offspring...
2017: Advances in Neurobiology
https://www.readbyqxmd.com/read/28931792/effects-of-prenatal-methylmercury-exposure-from-minamata-disease-to-environmental-health-studies
#10
Mineshi Sakamoto, Takaaki Itai, Katsuyuki Murata
Methylmercury, the causative agent of Minamata disease, can easily penetrate the brain, and adult-type Minamata disease patients showed neurological symptoms according to the brain regions where the neurons, mainly in the cerebrum and cerebellum, were damaged. In addition, fetuses are exposed to methylmercury via the placenta from maternal fish consumption, and high-level exposure to methylmercury causes damage to the brains of infants. Typical patients with fetal-type Minamata disease (i.e., serious poisoning caused by in utero exposure to methylmercury) were born during the period of severe methylmercury pollution in 1955-1959, although they showed no abnormality during gestation nor at delivery...
2017: Nihon Eiseigaku Zasshi. Japanese Journal of Hygiene
https://www.readbyqxmd.com/read/28931587/maternal-choline-supplementation-modulates-placental-nutrient-transport-and-metabolism-in-late-gestation-of-mouse-pregnancy
#11
Sze Ting Cecilia Kwan, Julia H King, Jian Yan, Zhen Wang, Xinyin Jiang, Jason S Hutzler, Hallie R Klein, J Thomas Brenna, Mark S Roberson, Marie A Caudill
Background: Fetal growth is dependent on placental nutrient supply, which is influenced by placental perfusion and transporter abundance. Previous research indicates that adequate choline nutrition during pregnancy improves placental vascular development, supporting the hypothesis that choline may affect placental nutrient transport.Objective: The present study sought to determine the impact of maternal choline supplementation (MCS) on placental nutrient transporter abundance and nutrient metabolism during late gestation...
September 20, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28929580/selective-expression-of-egfp-in-mouse-perivascular-astrocytes-by-modification-of-the-mlc1-gene-using-t2a-based-ribosome-skipping
#12
Jordan J Toutounchian, Joseph H McCarty
Perivascular astrocyte end feet closely juxtapose cerebral blood vessels to regulate important developmental and physiological processes including endothelial cell proliferation and sprouting as well as the formation of the blood-brain barrier (BBB). The mechanisms underlying these events remain largely unknown due to a lack of experimental models for identifying perivascular astrocytes and distinguishing these cell types from other astroglial populations. Megalencephalic leukoencephalopathy with subcortical cysts 1 (Mlc1) is a transmembrane protein that is expressed in perivascular astrocyte end feet where it controls BBB development and homeostasis...
September 20, 2017: Genesis: the Journal of Genetics and Development
https://www.readbyqxmd.com/read/28926727/early-pregnancy-intrauterine-fetal-exposure-to-maternal-smoking-and-impact-on-fetal-telomere-length
#13
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/28925578/combined-fetal-inflammation-and-postnatal-hypoxia-causes-myelin-deficits-and-autism-like-behavior-in-a-rat-model-of-diffuse-white-matter-injury
#14
Erik van Tilborg, E J Marijke Achterberg, Caren M van Kammen, Annette van der Toorn, Floris Groenendaal, Rick M Dijkhuizen, Cobi J Heijnen, Louk J M J Vanderschuren, Manon N J L Benders, Cora H A Nijboer
Diffuse white matter injury (WMI) is a serious problem in extremely preterm infants, and is associated with adverse neurodevelopmental outcome, including cognitive impairments and an increased risk of autism-spectrum disorders. Important risk factors include fetal or perinatal inflammatory insults and fluctuating cerebral oxygenation. However, the exact mechanisms underlying diffuse WMI are not fully understood and no treatment options are currently available. The use of clinically relevant animal models is crucial to advance knowledge on the pathophysiology of diffuse WMI, allowing the definition of novel therapeutic targets...
September 19, 2017: Glia
https://www.readbyqxmd.com/read/28924861/role-of-bdnf-and-neurotrophic-receptors-in-human-inner-ear-development
#15
L Johnson Chacko, M J F Blumer, E Pechriggl, H Rask-Andersen, W Dietl, A Haim, H Fritsch, R Glueckert, J Dudas, A Schrott-Fischer
The expression patterns of the neurotrophin, brain-derived neurotrophic factor, BDNF, and the neurotrophic receptors-p75NTR and Trk receptors-in the developing human fetal inner ear between the gestational weeks (GW) 9 to 12 are examined via in situ hybridization and immunohistochemistry. BDNF mRNA expression was highest in the cochlea at GW 9 but declined in the course of development. In contrast to embryonic murine specimens, a decline in BDNF expression from the apical to the basal turn of the cochlea could not be observed...
September 19, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28923016/5-hydroxymethylcytosine-is-highly-dynamic-across-human-fetal-brain-development
#16
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/28921714/fetal-microchimerism-in-human-brain-tumors
#17
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/28918081/developmental-alcohol-exposure-impairs-synaptic-plasticity-without-overtly-altering-microglial-function-in-mouse-visual-cortex
#18
Elissa L Wong, Nina M Lutz, Victoria A Hogan, Cassandra E Lamantia, Helene R McMurray, Jason R Myers, John M Ashton, Ania K Majewska
Fetal alcohol spectrum disorder (FASD), caused by gestational ethanol (EtOH) exposure, is one of the most common causes of non-heritable and life-long mental disability worldwide, with no standard treatment or therapy available. While EtOH exposure can alter the function of both neurons and glia, it is still unclear how EtOH influences brain development to cause deficits in sensory and cognitive processing later in life. Microglia play an important role in shaping synaptic function and plasticity during neural circuit development and have been shown to mount an acute immunological response to EtOH exposure in certain brain regions...
September 13, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28918028/human-dmbt1-derived-cell-penetrating-peptides-for-intracellular-sirna-delivery
#19
Martina Tuttolomondo, Cinzia Casella, Pernille Lund Hansen, Ester Polo, Luciana M Herda, Kenneth A Dawson, Henrik J Ditzel, Jan Mollenhauer
Small interfering RNA (siRNA) is a promising molecule for gene therapy, but its therapeutic administration remains problematic. Among the recently proposed vectors, cell-penetrating peptides show great promise in in vivo trials for siRNA delivery. Human protein DMBT1 (deleted in malignant brain tumor 1) is a pattern recognition molecule that interacts with polyanions and recognizes and aggregates bacteria. Taking advantage of these properties, we investigated whether specific synthetic DMBT1-derived peptides could be used to formulate nanoparticles for siRNA administration...
September 15, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28915355/thiamin-deficiency-on-fetal-brain-development-with-and-without-prenatal-alcohol-exposure
#20
Olena Kloss, Michael Eskin, Miyoung Suh
Adequate thiamin levels are crucial for optimal health, through maintenance of homeostasis and viability of metabolic enzymes, which require thiamine as a co-factor. Thiamin deficiency occurs during pregnancy when dietary intake is inadequate or excessive alcohol is consumed. Thiamin deficiency leads to brain dysfunction due to its involvement in synthesis of myelin and neurotransmitters (eg. acetylcholine, γ-aminobutyric acid, glutamate), and increases oxidative stress by decreasing the production of reducing agents...
September 15, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
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