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Neurotoxicology and Teratology

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https://www.readbyqxmd.com/read/30227199/trajectories-of-pre-and-postnatal-co-use-of-cannabis-and-tobacco-predict-co-use-and-drug-use-disorders-in-adult-offspring
#1
Natacha M De Genna, Lidush Goldschmidt, Gale A Richardson, Marie D Cornelius, Nancy L Day
Co-use of cannabis and tobacco is increasingly common among women and is associated with tobacco and cannabis dependence and poorer cessation outcomes. However, no study has examined maternal patterns of co-use over time, or the impact of maternal co-use on co-use and drug problems in adult offspring. Pregnant women (M age = 23, range = 18-42; 52% African American, 48% White) were asked about substance use during each trimester of pregnancy, and at 8 and 18 months, 3, 6, 10, 14, 16, and 22 years postpartum...
September 15, 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/30201482/moderate-developmental-alcohol-exposure-reduces-repetitive-alternation-in-a-zebrafish-model-of-fetal-alcohol-spectrum-disorders
#2
Madeleine Cleal, Matthew O Parker
The damaging effects of alcohol on a developing fetus are well known and cause a range of conditions known as fetal alcohol spectrum disorder (FASD). High levels of alcohol exposure lead to physical deformity and severe cognitive deficits, but more moderate exposure leads to a range of subtle cognitive effects such as reduced social behavior, higher propensity to develop addictions, and reduced spatial working memory. Previous studies have demonstrated that following exposure to relatively low levels of ethanol during early brain development (equivalent in humans to moderate exposure) zebrafish display a range of social and behavioral differences...
September 7, 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/30118783/obituary-philip-j-bushnell-ph-d-1947-2018
#3
LETTER
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No abstract text is available yet for this article.
August 14, 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/30102975/accelerated-functional-losses-in-ageing-congenital-minamata-disease-patients
#4
Takashi Yorifuji, Shigeru Takaoka, Philippe Grandjean
Severe methylmercury poisoning occurred in Minamata and neighboring communities in Japan during the 1950s and 1960s. A considerable number of children were born with conditions resembling cerebral palsy, later known as congenital Minamata disease. Although surviving patients are now in their 50s or 60s, few assessments of functional capacities in daily living have been performed. We assessed the changes in Activities of Daily Living (ADL) status of 11 patients over a 10-year period. For assessment of ADL, we applied the Barthel Index (BI) and the Functional Independence Measure (FIM)...
September 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/30081085/co-use-of-tobacco-and-marijuana-during-pregnancy-pathways-to-externalizing-behavior-problems-in-early-childhood
#5
Stephanie A Godleski, Shannon Shisler, Rina D Eiden, Marilyn A Huestis
Use and co-use of tobacco and marijuana during pregnancy are associated with the development of social, cognitive, and behavioral problems for infants and children. However, less is known about the potential developmental impact of the use of tobacco and marijuana in tandem. The present study examined an etiological model for the development of externalizing behavior problems (EBP) in early childhood in a high risk sample (N = 247) of mother-infant dyads with prospective data from pregnancy to 36 months of child age...
September 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/30076895/metabolomics-studies-on-corticosterone-induced-pc12-cells-a-strategy-for-evaluating-an-in-vitro-depression-model-and-revealing-the-metabolic-regulation-mechanism
#6
Jun-Sheng Tian, Shao-Bo Liu, Xiao-Yan He, Huan Xiang, Jian-Li Chen, Yao Gao, Yu-Zhi Zhou, Xue-Mei Qin
There are three types of differentiated (un-, poorly- and well-differentiated) PC12 cells, which have been widely used as a model system for depression studies after the administration of corticosterone (CORT). In order to investigate the underlying metabolic profiles of CORT-induced PC12 cells and evaluate the suitable differentiated types of PC12 cells for use in depressive studies, proton nuclear magnetic resonance (1 H NMR) metabolomics coupled with network analysis approaches were employed. The results showed that CORT induced metabolic alterations in PC12 cells...
September 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/30017939/comparison-of-neurotoxicity-of-dexmedetomidine-as-an-adjuvant-in-brachial-plexus-block-in-rats-of-different-age
#7
Zhenming Kang, Wenji Xie, Wenqin Xie, Shunyuan Li, Rushuang Chen
Dexmedetomidine is a local anesthetic adjuvant that exerts neuroprotective effects in addition to its sedative and analgesic properties. However, it is not clear whether dexmedetomidine causes any neurotoxicity in neonates. We injected dexmedetomidine alone or in combination with ropivacaine to induce brachial plexus block in rats of different age, corresponding to human neonate, childhood, adolescence and adulthood. We then examined pro-inflammatory cytokines and activated caspase 3 to determine the neurotoxicity effects...
September 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29953942/an-examination-of-the-association-between-prenatal-cocaine-exposure-and-brain-activation-measures-of-arousal-and-attention-in-young-adults-an-fmri-study-using-the-attention-network-task
#8
Jennifer A Willford, Dil Singhabahu, Athula Herat, Gale A Richardson
Prenatal drug exposure, including cocaine, alcohol, marijuana, and tobacco, is associated with deficits in behavioral regulation and attention. Using fMRI, the objective of this study was to characterize the association between prenatal cocaine exposure (PCE) and the underlying neural substrates associated with behavioral outcomes of attention. Forty-seven young adults were recruited for this study from the ongoing Maternal Health Practices and Child Development (MHPCD) Project, a longitudinal study of the effects of PCE on growth, behavior, and cognitive function...
September 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29936119/effect-of-repeated-juvenile-exposure-to-%C3%AE-9%C3%A2-tetrahydrocannabinol-on-anxiety-related-behavior-and-social-interactions-in-adolescent-rats
#9
Afzaal N Mohammed, Navatha Alugubelly, Barbara L Kaplan, Russell L Carr
The gestational and adolescent periods are critically important for brain development and exposure to Δ9‑tetrahydrocannabinol (Δ9-THC) during these periods results in long term behavioral and biochemical abnormalities in laboratory animals. However, recent reports indicate a dramatic rise in oral Δ9-THC exposure in young children but the effects of this exposure scenario have not been adequately investigated. Using a model designed to mimic childhood exposure, male and female rat pups were orally exposed to either corn oil or 10 mg/kg Δ9-THC daily from postnatal days 10-16...
September 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29225006/mechanistic-studies-on-ketamine-induced-mitochondrial-toxicity-in-zebrafish-embryos
#10
Bonnie L Robinson, Melanie Dumas, Syed F Ali, Merle G Paule, Qiang Gu, Jyotshna Kanungo
Ketamine, a phencyclidine derivative, is an antagonist of the Ca2+ -permeable N-methyl-d-aspartate (NMDA)-type glutamate receptors. It is a pediatric anesthetic and has been implicated in developmental neurotoxicity. Ketamine has also been shown to deplete ATP in mammalian cells. Our previous studies showed that acetyl l-carnitine (ALCAR) prevented ketamine-induced cardiotoxicity and neurotoxicity in zebrafish embryos. Based on our finding that ALCAR's protective effect was blunted by oligomycin A, an inhibitor of ATP synthase, we further investigated the effects of ketamine and ALCAR on ATP levels, mitochondria and ATP synthase in zebrafish embryos...
September 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29101052/cluster-analysis-profiling-of-behaviors-in-zebrafish-larvae-treated-with-antidepressants-and-pesticides
#11
Holly Richendrfer, Robbert Creton
Antidepressants are used by a substantial number of women in their childbearing years. Treatment may continue during pregnancy, since untreated depression poses a risk to the mother and child. However, many antidepressants readily pass through the placental barrier to reach the fetus or may be ingested by the newborn via breastmilk. Little is known about the effects of antidepressants on brain development and subsequent behavior in young children. In the current study, we used zebrafish as a model system to examine the neurodevelopmental effects of three commonly prescribed antidepressants, sertraline, duloxetine and bupropion...
September 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29886245/short-exposure-to-low-concentrations-of-alcohol-during-embryonic-development-has-only-subtle-and-strain-dependent-effect-on-the-levels-of-five-amino-acid-neurotransmitters-in-zebrafish
#12
Samantha Mahabir, Diptendu Chatterjee, Robert Gerlai
The zebrafish has been successfully employed to model and study the effects of embryonic alcohol exposure. Short exposure to low alcohol concentrations during embryonic development has been shown to significantly disrupt social behavior as well as the dopaminergic and serotoninergic systems in zebrafish. However, analysis of potential effects of embryonic alcohol exposure on other amino acid neurotransmitter systems has not been performed. Here we analyzed neurochemicals obtained from adult AB and TU strain zebrafish that were immersed in 0...
July 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29886244/additive-drug-specific-and-sex-specific-risks-associated-with-co-use-of-marijuana-and-tobacco-during-pregnancy-evidence-from-3-recent-developmental-cohorts-2003-2015
#13
Suena H Massey, Daniel K Mroczek, David Reiss, Emily S Miller, Jessica A Jakubowski, Eileen K Graham, Shannon M Shisler, Meaghan McCallum, Marilyn A Huestis, Jody M Ganiban, Daniel S Shaw, Leslie D Leve, Rina D Eiden, Laura R Stroud, Jenae M Neiderhiser
BACKGROUND: Methodologic challenges related to the concomitant use (co-use) of substances and changes in policy and potency of marijuana contribute to ongoing uncertainty about risks to fetal neurodevelopment associated with prenatal marijuana use. In this study, we examined two biomarkers of fetal neurodevelopmental risk-birth weight and length of gestation-associated with prenatal marijuana use, independent of tobacco (TOB), alcohol (ALC), other drug use (OTH), and socioeconomic risk (SES), in a pooled sample (N = 1191) derived from 3 recent developmental cohorts (2003-2015) with state-of-the-art substance use measures...
July 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29883744/prevalence-and-associated-birth-outcomes-of-co-use-of-cannabis-and-tobacco-cigarettes-during-pregnancy
#14
Victoria H Coleman-Cowger, Emmanuel A Oga, Erica N Peters, Katrina Mark
Use of Cannabis and use of tobacco overlap, and co-use of Cannabis and tobacco has increased over the past decade among adults. The current study aims to document the prevalence and correlates of co-use of Cannabis and tobacco cigarettes among adult pregnant women utilizing secondary data from a larger study that compared and validated screeners for illicit and prescription drug use during pregnancy. Pregnant women (N = 500; 71% African American; 65% never married, average age of 28 years) were recruited from two urban University obstetric clinics between January and December 2017...
July 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29807111/transport-of-a-manganese-zinc-ethylene-bis-dithiocarbamate-fungicide-may-involve-pre-synaptic-dopaminergic-transporters
#15
Kara Montgomery, Caleb Corona, Rebekah Frye, Reid Barnett, Andrew Bailey, Vanessa A Fitsanakis
Mancozeb (MZ), an organic-metal fungicide used predominantly on vegetables and fruits, has been linked to neurodegeneration and behavioral disruptions in a variety of organisms, including humans. Both γ-aminobutyric acid and dopamine neurons appear to be more vulnerable to MZ exposure than other neuronal populations. Based on these observations, we hypothesized that MZ may be differentially transported into these cells through their presynaptic neurotransmitter transporters. To test this, we pretreated Caenorhabditis elegans with transporter antagonists followed by exposure to various concentrations of MZ...
July 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29802885/quantitative-assessment-of-cypermethrin-induced-behavioural-and-biochemical-anomalies-in-adult-zebrafish
#16
Shubham Nema, Yogesh Bhargava
Cypermethrin is one of the top five pesticides used globally. Although the effect of cypermethrin on the embryonic stages of zebrafish is well characterized, its toxic effect on the behaviour of adult zebrafish is largely unknown. Here we used videogram and automated tracking approach to quantitatively assess behavioural toxicity induced by the short exposure of cypermethrin to adult zebrafish. We observed that cypermethrin at 25 ppb level induced behavioural toxicity in adult zebrafish. Motor activity of the treated group was significantly retarded which affected their overall exploratory behaviour including their visit to the central arena of the open-field test...
July 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29782912/in-vitro-protective-activity-of-south-australian-marine-sponge-and-macroalgae-extracts-against-amyloid-beta-a%C3%AE-1-42-induced-neurotoxicity-in-pc-12-cells
#17
Mousa Alghazwi, Scott Smid, Wei Zhang
South Australia is a biodiversity hotspot of marine sponges and macroalgae. This study aimed to evaluate the potential neuroprotective activity of extracts from these two marine sources by reducing the toxicity of human amyloid beta Aβ1-42 in a cell model assay using PC-12 cells. A total of 92 extracts (43, 13, 16, and 20 extracts from sponge of 8 orders and 17 families, green algae of 3 orders and 4 families, brown algae of 6 orders and 8 families, and red algae of 5 orders and 10 families, respectively) were initially screened at three different concentrations (0...
July 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29733897/effects-of-low-level-sarin-and-cyclosarin-exposure-on-hippocampal-microstructure-in-gulf-war-veterans
#18
Linda L Chao, Yu Zhang
In early March 1991, shortly after the end of the Gulf War (GW), a munitions dump was destroyed at Khamisiyah, Iraq. Later, in 1996, the dump was found to have contained the organophosphorus (OP) nerve agents sarin and cyclosarin. We previously reported evidence of smaller hippocampal volumes in GW veterans with predicted exposure to the Khamisiyah plume compared to unexposed GW veterans. To investigate whether these macroscopic hippocampal volume changes are accompanied by microstructural alterations in the hippocampus, the current study acquired diffusion-tensor imaging (DTI), T1-, and T2-weighted images from 170 GW veterans (mean age: 53 ± 7 years), 81 of whom had predicted exposure to the Khamisiyah plume according to Department of Defense (DOD) plume modeling...
July 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29727701/prenatal-exposure-to-tobacco-and-cannabis-effects-on-autonomic-and-emotion-regulation
#19
Rina D Eiden, Pamela Schuetze, Shannon Shisler, Marilyn A Huestis
Tobacco and cannabis are often used together in pregnancy and both have effects on children's regulatory system. Yet, little is known about the impact of co-use on the development of emotion regulation at the developmentally salient age of 2 years. One pathway linking co-exposure to tobacco and cannabis to toddler regulation may be via poor autonomic regulation in infancy. In addition, substance using mothers may be more dysregulated themselves, which may have direct effects on toddler regulation, but may also affect parenting, particularly maternal sensitivity during mother-child interactions...
July 2018: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29715503/repeated-toluene-exposure-increases-the-excitability-of-layer-5-pyramidal-neurons-in-the-prefrontal-cortex-of-adolescent-rats
#20
Monserrat Armenta-Resendiz, Silvia L Cruz, Emilio J Galván
Despite serious health effects, volatile industrial products containing toluene are deliberately inhaled for their psychoactive actions, mainly among adolescents and young adults. Chronic toluene inhalation induces multiple alterations at the cellular and behavioral level; however, modifications of neuronal networks associated with the reward system after repeated toluene exposure are not thoroughly characterized. Here we used whole-cell recordings to determine the effects of repeated exposure to toluene (1000, 4000 or 8000 ppm for 30 min, twice a day, for ten days) on the neurophysiological properties of prelimbic layer 5 pyramidal neurons of the medial prefrontal cortex (mPFC) in adolescent male Wistar rats...
July 2018: Neurotoxicology and Teratology
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