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Prenatal exposure

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https://www.readbyqxmd.com/read/28646492/prenatal-perinatal-and-neonatal-risk-factors-for-perinatal-arterial-ischaemic-stroke-a-systematic-review-and-meta-analysis
#1
REVIEW
C Li, J K Miao, Y Xu, Y Y Hua, Q Ma, L L Zhou, H J Liu, Q X Chen
The aim of the present study was to perform a meta-analysis of published data to determine the significance of clinical factors and exposures to the risk of perinatal arterial ischaemic stroke (PAIS) and provide guidance for clinical diagnosis and treatment. A comprehensive literature search of the PubMed, Embase, MEDLINE and Cochrane Library databases for relevant observational studies (cohort/case-control) from March 1984 to March 2016 was undertaken. Two review authors independently examined the full text records to determine which studies met the inclusion criteria and evaluated risk factors for PAIS...
June 24, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28645885/the-threshold-of-toxicological-concern-for-prenatal-developmental-toxicity-in-rats-and-rabbits
#2
B van Ravenzwaay, X Jiang, T Luechtefeld, T Hartung
The Threshold Toxicological Concern (TTC) is based on the concept that in absence of experimental data reasonable assurance of safety can be given if exposure is sufficiently low. Using the REACH database the low 5th percentile of the NO(A)EL distribution, for prenatal developmental toxicity (OECD guideline 414) was determined. For rats, (434 NO(A)ELs values) for maternal toxicity, this value was 10 mg/kg-bw/day. For developmental toxicity (469 NO(A)ELs): 13 mg/kg-bw/day. For rabbits, (100 NO(A)ELs), the value for maternal toxicity was 4 mg/kg-bw/day, for developmental toxicity, (112 NO(A)EL values): 10 mg/kg-bw/day...
June 20, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28645698/radiological-studies-of-fetal-alcohol-spectrum-disorders-in-humans-and-animal-models-an-updated-comprehensive-review
#3
Van T Nguyen, Suyinn Chong, Quang M Tieng, Karine Mardon, Graham J Galloway, Nyoman D Kurniawan
Fetal Alcohol Spectrum Disorders encompass a wide range of birth defects in children born to mothers who consumed alcohol during pregnancy. Typical mental impairments in FASD include difficulties in life adaptation and learning and memory, deficits in attention, visuospatial skills, language and speech disabilities, mood disorders and motor disabilities. Multimodal imaging methods have enabled in vivo studies of the teratogenic effects of alcohol on the central nervous system, giving more insight into the FASD phenotype...
June 20, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28645012/associations-between-toxic-and-essential-trace-elements-in-maternal-blood-and-fetal-congenital-heart-defects
#4
Yanqiu Ou, Michael S Bloom, Zhiqiang Nie, Fengzhen Han, Jinzhuang Mai, Jimei Chen, Shao Lin, Xiaoqing Liu, Jian Zhuang
Prenatal exposure to toxic trace elements, including heavy metals, is an important public health concern. Few studies have assessed if individual and multiple trace elements simultaneously affect cardiac development. The current study evaluated the association between maternal blood lead (Pb), cadmium (Cd), chromium (Cr), copper (Cu), mercury (Hg), and selenium (Se) levels and congenital heart defects (CHDs) in offspring. This hospital-based case-control study included 112 case and 107 control infants. Maternal peripheral blood draw was made during gestational weeks 17-40 and used to determine trace element levels by inductively coupled plasma mass spectrometry...
June 20, 2017: Environment International
https://www.readbyqxmd.com/read/28644729/promoting-prenatal-exercise-from-a-sociocultural-and-life-course-perspective-an-embodied-conceptual-framework
#5
Shannon Jette, Julie Maier, Katelyn Esmonde, Cherise Davis
PURPOSE: Prenatal exercise is a health behavior that is receiving growing attention amid concern that women in Western societies are gaining excess weight during pregnancy and contributing to future obesity in both the mother and child. In this article, we draw on insights from the fields of social epidemiology and social theory of the body to examine existing prenatal exercise interventions and to propose a multidimensional framework intended to guide future theorizing and intervention design...
June 23, 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28639488/prenatal-exposure-to-serotonin-reuptake-inhibitors-and-congenital-heart-anomalies-an-exploratory-pharmacogenetics-study
#6
Aizati N A Daud, Jorieke E H Bergman, Wilhelmina S Kerstjens-Frederikse, Pieter van der Vlies, Eelko Hak, Rolf M F Berger, Henk Groen, Bob Wilffert
AIM: To explore the role of pharmacogenetics in determining the risk of congenital heart anomalies (CHA) with prenatal use of serotonin reuptake inhibitors. METHODS: We included 33 case-mother dyads and 2 mother-only (child deceased) cases of CHA in a case-only study. Ten genes important in determining fetal exposure to serotonin reuptake inhibitors were examined: CYP1A2, CYP2C9, CYP2C19, CYP2D6, ABCB1, SLC6A4, HTR1A, HTR1B, HTR2A and HTR3B. RESULTS: Among the exposed cases, polymorphisms that tended to be associated with an increased risk of CHA were SLC6A4 5-HTTLPR and 5-HTTVNTR, HTR1A rs1364043, HTR1B rs6296 and rs6298 and HTR3B rs1176744, but none reached statistical significance due to our limited sample sizes...
June 22, 2017: Pharmacogenomics
https://www.readbyqxmd.com/read/28637461/prenatal-exposure-to-antifungal-medication-may-change-anogenital-distance-in-male-offspring-a-preliminary-study
#7
Djamilla Madelung Mogensen, Maria Bergkvist Pihl, Niels E Skakkebæk, Helle Raun Andersen, Anders Juul, Henriette Boye Kyhl, Shanna Swan, David Møbjerg Kristensen, Marianne Skovager Andersen, Dorte Vesterholm Lind, Tina Kold Jensen
BACKGROUND: Vaginal candidiasis is frequent among pregnant women and it is treated with anti-fungal medication (conazoles). Conazoles have anti-androgenic properties and prenatal exposure in rodents is associated with a shorter (less masculine) anogenital distance (AGD) in male offspring. To our knowledge this has never been studied in humans. METHOD: In the Odense Child Cohort pregnant women residing in Odense municipality, Denmark, were recruited at gestational age 8-16 weeks between 2010 and 2012...
June 21, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28637174/effect-of-prenatal-exposure-to-waterpipe-tobacco-smoke-on-learning-and-memory-of-adult-offspring-rats
#8
Nour Al-Sawalha, Karem Alzoubi, Omar Khabour, Weam Alyacoub, Yehya Almahmmod, Thomas Eissenberg
Introduction: Waterpipe tobacco smoking has increased in prevalence worldwide, including among pregnant women. In this study, we investigated the effect of prenatal maternal waterpipe tobacco smoke (WTS) exposure during different stages of pregnancy on learning and memory of adult offspring rats. Methods: Pregnant rats received either fresh air or mainstream WTS (two hours daily) during early, mid, late, or whole gestational period. Male offspring rats were followed through 20 weeks...
June 20, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28636953/dicer-deficiency-differentially-impacts-microglia-of-the-developing-and-adult-brain
#9
Diana Varol, Alexander Mildner, Thomas Blank, Anat Shemer, Neta Barashi, Simon Yona, Eyal David, Sigalit Boura-Halfon, Yifat Segal-Hayoun, Louise Chappell-Maor, Hadas Keren-Shaul, Dena Leshkowitz, Eran Hornstein, Martin Fuhrmann, Ido Amit, Nicola Maggio, Marco Prinz, Steffen Jung
Microglia seed the embryonic neuro-epithelium, expand and actively sculpt neuronal circuits in the developing central nervous system, but eventually adopt relative quiescence and ramified morphology in the adult. Here, we probed the impact of post-transcriptional control by microRNAs (miRNAs) on microglial performance during development and adulthood by generating mice lacking microglial Dicer expression at these distinct stages. Conditional Dicer ablation in adult microglia revealed that miRNAs were required to limit microglial responses to challenge...
June 20, 2017: Immunity
https://www.readbyqxmd.com/read/28636875/effects-of-prenatal-binge-like-ethanol-exposure-and-maternal-stress-on-postnatal-morphological-development-of-hippocampal-neurons-in-rats
#10
Ewa Jakubowska-Dogru, Birsen Elibol, Ilknur Dursun, Sinan Yürüker
BACKGROUND: Alcohol is one of the most commonly used drugs of abuse negatively affecting human health and it is known as a potent teratogen responsible for fetal alcohol syndrome (FAS), which is characterized by cognitive deficits especially pronounced in juveniles but ameliorating in adults. Searching for the potential morphological correlates of these effects, in this study, we compared the course of developmental changes in the morphology of principal hippocampal neurons in fetal-alcohol (A group), intubated control (IC group), and intact control male rats (C group) over a protracted period of the first two postnatal months...
June 18, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28635121/exposure-to-sodium-valproate-during-pregnancy-facial-features-and-signs-of-autism
#11
Rachel Stadelmaier, Hanah Nasri, Curtis K Deutsch, Margaret Bauman, Anne Hunt, Christopher J Stodgell, Jane Adams, Lewis B Holmes
BACKGROUND: Valproic acid (VPA) is the most teratogenic anticonvulsant drug in clinical use today. Children exposed prenatally to VPA have previously been shown to have dysmorphic craniofacial features, identified subjectively but not by anthropometric methods. Exposure to VPA has also been associated with an increased frequency of autism spectrum disorder (ASD). An increased cephalic index (the ratio of the cranial lateral width to the cranial anterior-posterior length) has been observed in children with ASD...
June 21, 2017: Birth defects research
https://www.readbyqxmd.com/read/28634776/evidence-supporting-the-internal-validity-of-the-proposed-nd-pae-disorder
#12
Julie A Kable, Claire D Coles
The internal validity of the proposed Neurobehavioral Disorder Associated with Prenatal Alcohol Exposure (ND-PAE) was evaluated in children diagnosed with either Fetal Alcohol Syndrome (FAS) or partial FAS who were 3-10 years of age and had enrolled in a math intervention study. Symptoms were coded as present or absent using assessments conducted in the study, including standardized measures of neurocognitive and behavioral functioning, parent interview, and direct observations of the child. The number of endorsed ND-PAE symptoms was not related to environmental factors but was moderately related to the child's age...
June 20, 2017: Child Psychiatry and Human Development
https://www.readbyqxmd.com/read/28632983/a-descriptive-study-of-a-community-based-home-visiting-program-with-preschool-children-prenatally-exposed-to-alcohol
#13
Ana Hanlon-Dearman, Sayma Malik, Julia Wellwood, Karen Johnston, Holly Gammon, Kathy N Andrew, Breann Maxwell, Sally Longstaffe
BACKGROUND: Research suggests that prenatal alcohol exposure (PAE) and Fetal Alcohol Spectrum Disorder (FASD) increases the risk of insecure caregiver-child attachment and related negative child emotional-behavioural outcomes. Research also shows positive effects of attachment-focused interventions in preventing disrupted caregiver-child attachment relationships; however, such interventions have not been specifically adapted for children with FASD. OBJECTIVES: This paper describes the implementation, challenges, and results of a community home-based attachment intervention, Circle of Security® (COS), with preschool children affected by PAE/FASD in Manitoba, Canada...
June 14, 2017: Journal of Population Therapeutics and Clinical Pharmacology
https://www.readbyqxmd.com/read/28628864/polybrominated-diphenyl-ethers-pbdes-and-thyroid-hormones-in-cord-blood
#14
Guodong Ding, Jing Yu, Limei Chen, Caifeng Wang, Yijun Zhou, Yi Hu, Rong Shi, Yan Zhang, Chang Cui, Yu Gao, Ying Tian, Fang Liu
Human exposure to polybrominated diphenyl ethers (PBDEs) has been increasing over the last three decades in China and around the world. Animal studies suggest that PBDEs could reduce blood levels of thyroid hormones, but it is unclear whether PBDEs disrupt thyroid function in humans. We used data from a prospective birth cohort of 123 pregnant women who were enrolled between September 2010 and March 2011 in Shandong, China. We measured the concentrations of eight PBDE congeners (n = 106) and five thyroid hormones (n = 107) in cord serum samples...
June 16, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28627668/potential-genetic-damage-to-nematode-offspring-following-exposure-to-triclosan-during-pregnancy
#15
Aixia Zhang, Xiaohong Gu, Xiuping Wang, Lei Wang, Lihua Zeng, Xuemei Fan, Chen Jiang, Ziyi Fu, Xianwei Cui, Chenbo Ji, Hongming Qu, Xirong Guo
Triclosan (TCS) is widely used as broad-spectrum antibacterial agent. However, it may threaten the health of human offspring if the mother is exposed to TCS during pregnancy. The present study aimed to identify potential mechanisms behind the toxic effect of TCS on the offspring of Caenorhabditis elegans (C. elegans), using this nematode as a suitable animal model. The results of the current study demonstrated that the locomotory behavior and reproductive capacity of C. elegans offspring was severely affected by prenatal exposure to different concentrations of TCS...
June 13, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28627408/developmental-exposure-to-glyphosate-based-herbicide-and-depressive-like-behavior-in-adult-offspring-implication-of-glutamate-excitotoxicity-and-oxidative-stress
#16
Daiane Cattani, Patrícia Acordi Cesconetto, Mauren Kruger Tavares, Eduardo Benedetti Parisotto, Paulo Alexandre De Oliveira, Carla Elise Heinz Rieg, Marina Concli Leite, Rui Daniel Schröder Prediger, Nestor Cubas Wendt, Guilherme Razzera, Danilo Wilhelm Filho, Ariane Zamoner
We have previously demonstrated that maternal exposure to glyphosate-based herbicide (GBH) leads to glutamate excitotoxicity in 15-day-old rat hippocampus. The present study was conducted in order to investigate the effects of subchronic exposure to GBH on some neurochemical and behavioral parameters in immature and adult offspring. Rats were exposed to 1% GBH in drinking water (corresponding to 0.36% of glyphosate) from gestational day 5 until postnatal day (PND)-15 or PND60. Results showed that GBH exposure during both prenatal and postnatal periods causes oxidative stress, affects cholinergic and glutamatergic neurotransmission in offspring hippocampus from immature and adult rats...
June 13, 2017: Toxicology
https://www.readbyqxmd.com/read/28625926/prenatal-caffeine-exposure-induced-high-susceptibility-to-metabolic-syndrome-in-adult-female-offspring-rats-and-its-underlying-mechanisms
#17
Lin-Guo Pei, Chao Yuan, Yi-Tian Guo, Hao Kou, Li-Ping Xia, Li Zhang, You-E Yan, Dan Xu, Hui Wang
Our previous studies have demonstrated that prenatal caffeine exposure (PCE) induced an intrauterine programming of hypothalamic-pituitary-adrenal axis (HPAA)-associated neuroendocrine metabolism in 3-month-old offspring rats. In this study, we aimed to confirm this programming disorder and high susceptibility to metabolic syndrome (MS) in 10-month-old female PCE offspring with postnatal catch-up growth. We found that PCE female offspring rats showed decreased bodyweight but a higher rate of weight gain after birth...
June 15, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28624747/who-is-most-affected-by-prenatal-alcohol-exposure-boys-or-girls
#18
Philip A May, Barbara Tabachnick, Julie M Hasken, Anna-Susan Marais, Marlene M de Vries, Ronel Barnard, Belinda Joubert, Marise Cloete, Isobel Botha, Wendy O Kalberg, David Buckley, Zachary R Burroughs, Heidre Bezuidenhout, Luther K Robinson, Melanie A Manning, Colleen M Adnams, Soraya Seedat, Charles D H Parry, H Eugene Hoyme
OBJECTIVE: To examine outcomes among boys and girls that are associated with prenatal alcohol exposure. METHODS: Boys and girls with fetal alcohol spectrum disorders (FASD) and randomly-selected controls were compared on a variety of physical and neurobehavioral traits. RESULTS: Sex ratios indicated that heavy maternal binge drinking may have significantly diminished viability to birth and survival of boys postpartum more than girls by age seven...
June 15, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28624605/transplacental-exposure-to-environmental-carcinogens-association-with-childhood-cancer-risks-and-the-role-of-modulating-factors
#19
REVIEW
A Fucic, V Guszak, A Mantovani
Biological responses to carcinogens from environmental exposure during adulthood are modulated over years or decades. Conversely, during transplacental exposure, the effects on the human foetus change within weeks, intertwining with developmental mechanisms: even short periods of transplacental exposure may be imprinted in the organism for a lifetime. The pathways leading to childhood and juvenile cancers, such as leukaemias, neuroblastoma/brain tumours, hepatoblastoma, and Willm's tumor involve prenatally-induced genomic, epigenomic and/or non-genomic effects caused by xenobiotics...
June 14, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28623811/residential-exposure-to-pesticides-as-risk-factor-for-childhood-and-young-adult-brain-tumors-a-systematic-review-and-meta-analysis
#20
REVIEW
Geneviève Van Maele-Fabry, Laurence Gamet-Payrastre, Dominique Lison
BACKGROUND: Accumulating evidence suggests a positive association between exposure to non-agricultural pesticides and childhood brain tumors (CBT). OBJECTIVE: (1) To conduct a systematic review and meta-analysis of published studies on the association between residential/household/domestic exposure to pesticides and childhood brain tumors. (2) To clarify variables that could impact the results. METHODS: Publications in English were identified from a MEDLINE search through 28 February 2017 and from the reference list of identified publications...
June 14, 2017: Environment International
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