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Prenatal exposure

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https://www.readbyqxmd.com/read/28213594/brighter-children-the-association-between-seasonality-of-birth-and-child-iq-in-a-population-based-birth-cohort
#1
Nina H Grootendorst-van Mil, Régine P M Steegers-Theunissen, Albert Hofman, Vincent W V Jaddoe, Frank C Verhulst, Henning Tiemeier
OBJECTIVE: Season of birth has repeatedly been found to be a risk indicator for adverse neurodevelopmental outcomes. Several explanations for this finding have been put forward but no conclusion has been reached. In the current study, we explored the role of sociodemographic and biological factors in the association between season of birth and child IQ. DESIGN: In a prenatally recruited birth cohort (born in 2002-2006), we examined the association between season of birth and non-verbal IQ at age 6 years among 6034 children...
February 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28213294/a-low-cost-simplified-and-scaleable-pneumotachograph-and-face-mask-for-neonatal-mouse-respiratory-measurements
#2
Jenny J Sun, Roshan Nanu, Russell S Ray
INTRODUCTION: Neonatal respiratory disorders are a leading cause of perinatal mortality due to complications resulting from premature births and prenatal exposure to drugs of abuse, but optimal treatments for these symptoms are still unclear due to a variety of confounds and risk factors. Mouse models present an opportunity to study the underlying mechanisms and efficacy of potential treatments of these conditions with controlled variables. However, measuring respiration in newborn mice is difficult and commercial components are expensive and often require modification, creating a barrier and limiting our understanding of the short and long-term effects of birth complications on respiratory function...
February 14, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/28212724/mechanistic-insight-into-neurotoxicity-induced-by-developmental-insults
#3
REVIEW
Christoffer Tamm, Sandra Ceccatelli
Epidemiological and/or experimental studies have shown that unfavorable prenatal environmental factors, such as stress or exposure to certain neurotoxic environmental contaminants, may have adverse consequences for neurodevelopment. Alterations in neurogenesis can have harmful effects not only for the developing nervous system, but also for the adult brain where neurogenesis is believed to play a role in learning, memory, and even in depression. Many recent advances in the understanding of the complex process of nervous system development can be integrated into the field of neurotoxicology...
January 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28208851/2d-4d-ratio-and-its-implications-in-medicine
#4
Saravanakumar Jeevanandam, Prathibha K Muthu
Digit ratios, especially 2D:4D ratio, a potential proxy marker for prenatal androgen exposure shows sexual dimorphism. Existing literature and recent research show accumulating evidence on 2D:4D ratio showing correlations with various phenotypic traits in humans. Ratio of 2D:4D is found to correlate negatively to testosterone and positively to oestrogen in the foetus. Interestingly, it is constant since birth and not influenced by the adult hormone levels. Usually, males have lower ratios when compared to females...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28203043/influence-of-antenatal-synthetic-glucocorticoid-administration-on-pyramidal-cell-morphology-and-microtubule-associated-protein-type-2-map2-in-rat-cerebrocortical-neurons
#5
Rodrigo Pascual, Isabel Cuevas, Odra Santander, Martina Valencia
Previous animal studies have indicated that excessive prenatal circulating glucocorticoid (GC) levels induced by the antenatal administration of synthetic GC (sGC) significantly alter neuronal development in the cerebellar and hippocampal neurons of the offspring. However, it is unknown whether antenatal sGC administration results in long-term neocortical pyramidal cell impairment. In the current study, we examined whether an equivalent therapeutic dose of antenatal betamethasone phosphate (BET) in pregnant rats alters the Golgi-stained basilar dendritic length and histochemical expression of dendritic microtubule-associated protein 2 (MAP2) of neocortical pyramidal cells in infant, adolescent, and young adult offspring...
January 2017: Clinical Pediatric Endocrinology: Case Reports and Clinical Investigations: Official Journal of the Japanese Society for Pediatric Endocrinology
https://www.readbyqxmd.com/read/28202519/correlates-of-prenatal-and-early-life-tobacco-smoke-exposure-and-frequency-of-common-gene-deletions-in-childhood-acute-lymphoblastic-leukemia
#6
Adam J de Smith, Maneet Kaur, Semira Gonseth, Alyson A Endicott, Steve Selvin, Luoping Zhang, Ritu Roy, Xiaorong Shao, Helen M Hansen, Alice Y Kang, Kyle M Walsh, Gary V Dahl, Roberta McKean-Cowdin, Catherine Metayer, Joseph L Wiemels
Tobacco smoke exposure has been associated with risk of childhood acute lymphoblastic leukemia (ALL). Understanding the relationship between tobacco exposures and specific mutations may yield etiologic insights. We carried out a case-only analysis to explore whether prenatal and early-life tobacco smoke exposure influences the formation of leukemogenic genomic deletions. Somatic copy-number of 8 genes frequently deleted in ALL (CDKN2A, ETV6, IKZF1, PAX5, RB1, BTG1, PAR1 region, and EBF1) was assessed in 559 pre-treatment tumor samples from the California Childhood Leukemia Study...
February 15, 2017: Cancer Research
https://www.readbyqxmd.com/read/28202385/long-term-consequences-of-disrupting-adenosine-signaling-during-embryonic-development
#7
REVIEW
Scott A Rivkees, Christopher C Wendler
There is growing evidence that disruption in the prenatal environment can have long-lasting effects on an individual's health in adulthood. Research on the fetal programming of adult diseases, including cardiovascular disease, focuses on epi-mutations, which alter the normal pattern of epigenetic factors such as DNA methylation, miRNA expression, or chromatin modification, rather than traditional genetic alteration. Thus, understanding how in utero chemical exposures alter epigenetics and lead to adult disease is of considerable public health concern...
February 12, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28199771/thyroid-dysfunction-in-children-with-autism-spectrum-disorder-is-associated-with-folate-receptor-alpha-autoimmune-disorder
#8
Richard E Frye, Rebecca Wynne, Shannon Rose, John Slattery, Leanna Delhey, Marie Tippett, Stephen G Kahler, Sirish C Bennuri, Stepan Melnyk, Jeffrey M Sequeira, Edward Quadros
Folate receptor α (FRα) autoantibodies (FRAAs) are prevalent in Autism Spectrum Disorder (ASD). FRAAs disrupt folate transport across the blood-brain barrier by binding to the FRα. Thyroid dysfunction is frequently found in children with ASD. We measured blocking and binding FRAAs and thyroid stimulating hormone (TSH), free T4 (FT4), total T3 (TT3), reverse T3 (rT3), thyroid releasing hormone (TRH) and other metabolites in 87 children with ASD, 84 of whom also underwent behavior and cognition testing and in 42 of whom FRAAs, TSH and FT4 were measured at two time points...
February 15, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/28198797/erratum-risk-of-prenatal-depression-and-stress-treatment-alteration-on-serotonin-system-of-offspring-through-exposure-to-fluoxetine
#9
Siran Pei, Li Liu, Zhaomin Zhong, Han Wang, Shuo Lin, Jing Shang
No abstract text is available yet for this article.
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28197082/the-role-of-acetaldehyde-in-the-increased-acceptance-of-ethanol-after-prenatal-ethanol-exposure
#10
Mirari Gaztañaga, Asier Angulo-Alcalde, Norman E Spear, M Gabriela Chotro
Recent studies show that acetaldehyde, the first metabolite in the oxidation of ethanol, can be responsible for both, the appetitive and the aversive effects produced by ethanol intoxication. More specifically, it has been hypothesized that acetaldehyde produced in the periphery by the liver is responsible for the aversive effects of ethanol, while the appetitive effects relate to the acetaldehyde produced centrally through the catalase system. On the other hand, from studies in our and other laboratories, it is known that ethanol exposure during the last gestational days (GD) consistently enhances the postnatal acceptance of ethanol when measured during early ontogeny in the rat...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28196555/dohad-at-the-intersection-of-maternal-immune-activation-and-maternal-metabolic-stress-a-scoping-review
#11
J A Goldstein, S A Norris, D M Aronoff
The prenatal environment is now recognized as a key driver of non-communicable disease risk later in life. Within the developmental origins of health and disease (DOHaD) paradigm, studies are increasingly identifying links between maternal morbidity during pregnancy and disease later in life for offspring. Nutrient restriction, metabolic disorders during gestation, such as diabetes or obesity, and maternal immune activation provoked by infection have been linked to adverse health outcomes for offspring later in life...
February 15, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/28192175/increased-anxiety-like-phenotype-in-female-guinea-pigs-following-reduced-neurosteroid-exposure-in-utero
#12
Angela L Cumberland, Hannah K Palliser, Gabrielle K Crombie, David W Walker, Jonathan J Hirst
Neurosteroids are essential for aiding proper fetal neurodevelopment. Pregnancy compromises such as preterm birth, prenatal stress and intrauterine growth restriction are associated with an increased risk of developing behavioural and mood disorders, particularly during adolescence. These pathologies involve the premature loss or alteration of trophic steroid hormones reaching the fetus leading to impaired neurodevelopment. While the specific programming mechanisms are yet to be fully elucidated, in adult life, dysfunctions of allopregnanolone action are prevalent in individuals with depression, post-traumatic stress disorder and anxiety disorders...
February 9, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28188601/sensitivity-of-the-uk-clinical-practice-research-datalink-to-detect-neurodevelopmental-effects-of-medicine-exposure-in-utero-comparative-analysis-of-an-antiepileptic-drug-exposed-cohort
#13
R A Charlton, A McGrogan, J Snowball, L M Yates, A Wood, J Clayton-Smith, W H Smithson, J L Richardson, N McHugh, S H L Thomas, G A Baker, R Bromley
INTRODUCTION: Electronic healthcare data have several advantages over prospective observational studies, but the sensitivity of data on neurodevelopmental outcomes and its comparability with data generated through other methodologies is unknown. OBJECTIVES: The objectives of this study were to determine whether data from the UK Clinical Practice Research Datalink (CPRD) produces similar risk estimates to a prospective cohort study in relation to the risk of neurodevelopmental disorders (NDDs) following prenatal antiepileptic drug (AED) exposure...
February 10, 2017: Drug Safety: An International Journal of Medical Toxicology and Drug Experience
https://www.readbyqxmd.com/read/28187949/long-term-alterations-to-dna-methylation-as-a-biomarker-of-prenatal-alcohol-exposure-from-mouse-models-to-human-children-with-fetal-alcohol-spectrum-disorders
#14
REVIEW
Benjamin I Laufer, Eric J Chater-Diehl, Joachim Kapalanga, Shiva M Singh
Rodent models of Fetal Alcohol Spectrum Disorders (FASD) have revealed that prenatal alcohol exposure (PAE) results in differential DNA cytosine methylation in the developing brain. The resulting genome-wide methylation changes are enriched in genes with neurodevelopmental functions. The profile of differential methylation is dynamic and present in some form for life. The methylation changes are transmitted across subsequent mitotic divisions, where they are maintained and further modified over time. More recent follow up has identified a profile of the differential methylation in the buccal swabs of young children born with FASD...
November 22, 2016: Alcohol
https://www.readbyqxmd.com/read/28187337/brain-morphology-in-school-aged-children-with-prenatal-opioid-exposure-a-structural-mri-study
#15
Eivind Sirnes, Leif Oltedal, Hauke Bartsch, Geir Egil Eide, Irene B Elgen, Stein Magnus Aukland
BACKGROUND: Both animal and human studies have suggested that prenatal opioid exposure may be detrimental to the developing fetal brain. However, results are somewhat conflicting. Structural brain changes in children with prenatal opioid exposure have been reported in a few studies, and such changes may contribute to neuropsychological impairments observed in exposed children. AIM: To investigate the association between prenatal opioid exposure and brain morphology in school-aged children...
February 7, 2017: Early Human Development
https://www.readbyqxmd.com/read/28186713/fetal-alcohol-research-caring-for-patients-with-prenatal-alcohol-exposure-a-needs-assessment
#16
Vincent C Smith, Phillip Matthias, Yasmin N Senturias, Renee M Turchi, Janet F Williams
BACKGROUND: Prenatal alcohol exposure (PAE) is the United States' most common preventable cause of birth defects and intellectual and developmental disabilities collectively referred to as Fetal Alcohol Spectrum Disorders (FASD). OBJECTIVES: This study was designed to identify gaps in pediatric providers' knowledge and practices regarding FASD patient identification, diagnosis, management and referral, and to inform needs-based FASD resource development. METHODS: Pediatric providers (pediatricians, trainees, nurse practitioners) were exposed to survey links embedded in newsletters electronically distributed to the membership of two national professional societies...
January 27, 2017: Journal of Population Therapeutics and Clinical Pharmacology
https://www.readbyqxmd.com/read/28186551/prenatal-exposure-to-snus-alters-heart-rate-variability-in-the-infant
#17
Felicia Nordenstam, Bo Lundell, Gary Cohen, Mesfin K Tessma, Pauline Raaschou, Ronny Wickström
No abstract text is available yet for this article.
February 10, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28185983/prenatal-melamine-exposure-impairs-spatial-cognition-and-hippocampal-synaptic-plasticity-by-presynaptic-and-postsynaptic-inhibition-of-glutamatergic-transmission-in-adolescent-offspring
#18
Lei An, Wei Sun
Our previous studies showed that prenatal melamine exposure (PME) could impair spatial cognition and hippocampal long-term potentiation (LTP). More importantly, the synaptic dysfunction induced by PME was associated with the probability of presynaptic glutamate release. Considering the crucial role of the other form of synaptic plasticity, long-term depression (LTD), in some types of learning and memory process, the aim of present study was to investigate if the hippocampal LTD and cognitive flexibility were affected...
February 6, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28182007/prenatal-alcohol-exposure-impairs-autophagy-in-neonatal-brain-cortical-microvessels
#19
Virginie Girault, Vianney Gilard, Florent Marguet, Céline Lesueur, Michelle Hauchecorne, Yasmina Ramdani, Annie Laquerrière, Stéphane Marret, Sylvie Jégou, Bruno Jose Gonzalez, Carole Brasse-Lagnel, Soumeya Bekri
Brain developmental lesions are a devastating consequence of prenatal alcohol exposure (PAE). We recently showed that PAE affects cortical vascular development with major effects on angiogenesis and endothelial cell survival. The underlying molecular mechanisms of these effects remain poorly understood. This study aimed at characterizing the ethanol exposure impact on the autophagic process in brain microvessels in human fetuses with fetal alcohol syndrome (FAS) and in a PAE mouse model. Our results indicate that PAE induces an increase of autophagic vacuole number in human fetal and neonatal mouse brain cortical microvessels...
February 9, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28181196/association-of-estrogen-related-traits-with-allergic-rhinitis
#20
Katarzyna Kliś, Iwona Wronka
Estrogen's role in allergic diseases has recently been of considerable interest. The present article seeks to determine the relationship between estrogen-dependent traits and allergic rhinitis. The following traits were considered: digit ratio, age at menarche, regularity of menstrual cycles, and the waist to hip ratio. The study consisted of surveys and measurement data collected from 768 female university undergraduates. One hundred and sixty eight undergraduates (21.9%) had been diagnosed with allergic rhinitis...
February 9, 2017: Advances in Experimental Medicine and Biology
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