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Neurotoxicology and Teratology

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https://www.readbyqxmd.com/read/28438663/acute-effects-of-amitriptyline-on-adult-zebrafish-potential-relevance-to-antidepressant-drug-screening-and-modeling-human-toxidromes
#1
Konstantin A Demin, Tatiana O Kolesnikova, Sergey L Khatsko, Darya M Meshalkina, Evgeniya V Efimova, Yuri Yu Morzherin, Allan V Kalueff
The need to develop novel antidepressants is an emerging problem in biomedicine. An aquatic vertebrate species, the zebrafish (Danio rerio) may serve as a useful in-vivo screen for CNS drugs, and displays high sensitivity to a wide range of antidepressants. Amitriptyline is a commonly used tricyclic antidepressant which acts primarily as a serotonin and noradrenaline reuptake inhibitor. Here, we characterize drug-induced behavioral and neurochemical responses in adult zebrafish following their acute exposure to amitriptyline...
April 21, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28435095/application-of-advanced-preclinical-models-and-methods-in-anesthetic-neurotoxicity-research
#2
REVIEW
Cheng Wang, Xuan Zhang, Fang Liu
Recently, there has been increasing concern regarding the potential of anesthetics to disturb the long-term function of the central nervous system (CNS). The field of anesthesia-related toxicology, therefore, has engaged multiple scientific disciplines and utilized a variety of pre-clinical research models in an attempt to identify the basic characteristics of the anesthetic agents that may produce acute and/or chronic adverse effects on the CNS. This review discusses how the application of advanced research approaches and models, such as the nonhuman primate, neural stem cell-derived organotypic slice cultures and/or organs-on-chips systems, can serve as translational models of infantile anesthetic exposure...
April 20, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28433669/environmental-enrichment-reverses-memory-impairment-induced-by-toluene-in-mice
#3
Sergio Montes, Rocío Del Carmen Solís-Guillen, David García-Jácome, Nayeli Páez-Martínez
Toluene is the main component of a variety of inhalants that are used for intoxication purposes. Alterations in memory have been reported in inhalant users; however, it is unclear whether these impairments could be reversed, and the mechanisms involved in the putative recovery. Therefore, the main purpose of this study was to model the deleterious effects of toluene on memory in mice and to evaluate the effect of environmental enrichment on that response. In the second part of the study, the concentrations of glutamate and GABA, following chronic toluene exposure and after environmental enrichment treatment, were evaluated...
April 19, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28363668/methylphenidate-alleviates-manganese-induced-impulsivity-but-not-distractibility
#4
Stephane A Beaudin, Barbara J Strupp, Walter Uribe, Lauren Ysais, Myla Strawderman, Donald R Smith
Recent studies from our lab have demonstrated that postnatal manganese (Mn) exposure in a rodent model can cause lasting impairments in fine motor control and attention, and that oral methylphenidate (MPH) treatment can effectively treat the dysfunction in fine motor control. However, it is unknown whether MPH treatment can alleviate the impairments in attention produced by Mn exposure. Here we used a rodent model of postnatal Mn exposure to determine whether (1) oral MPH alleviates attention and impulse control deficits caused by postnatal Mn exposure, using attention tasks that are variants of the 5-choice serial reaction time task, and (2) whether these treatments affected neuronal dendritic spine density in the medial prefrontal cortex (mPFC) and dorsal striatum...
March 28, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28344103/evaluation-of-geranylgeranylacetone-against-cisplatin-induced-ototoxicity-by-auditory-brainstem-response-heat-shock-proteins-and-oxidative-levels-in-guinea-pigs
#5
Wu-Chia Lo, Chen-Tu Wu, Hillary Chiao Lee, Yi-Ho Young, Yih-Leong Chang, Po-Wen Cheng
This study aims to assess whether geranylgeranylacetone (GGA) could reduce ototoxicity induced by cisplatin through upregulation of not only heat shock protein(HSP)-70, but also HSP-27 and HSP-40, and to study if GGA would reduce cisplatin-induced increase in oxidative stress. 48 guinea pigs were used in this study and treated with the following regimen: 0.5% CMC (sodium carboxymethyl cellulose) control for 7days, GGA (600mg/kg/d) for 7days, a combination of GGA (600mg/kg) for 7days and then one dose of 10mg/kg cisplatin (GGA+Cis), and a combination of CMC for 7days and then 10mg/kg cisplatin (cisplatin group)...
March 24, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28288948/memory-and-depressive-effect-on-male-and-female-swiss-mice-exposed-to-tannery-effluent
#6
Abraão Tiago Batista Guimarães, Raíssa de Oliveira Ferreira, Aline Sueli de Lima Rodrigues, Guilherme Malafaia
Although tannery industries generate substantial profits to the countries they are located in, they work with one of the most environmentally harmful human activities. Tannery effluents (TE) are highly toxic; thus, their improper release into water bodies may cause severe problems to individuals depending on this water. Therefore, the aim of the current study is to assess the effects of oral exposure to TE on the anxiety-, memory deficit- and depression-predictive behaviors in male and female Swiss adult mice...
March 10, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28286177/screening-for-novel-central-nervous-system-biomarkers-in-veterans-with-gulf-war-illness
#7
Mohamed B Abou-Donia, Lisa A Conboy, Efi Kokkotou, Eric Jacobson, Eman M Elmasry, Passent Elkafrawy, Megan Neely, Cameron R 'Dale' Bass, Kimberly Sullivan
Gulf War illness (GWI) is primarily diagnosed by symptom report; objective biomarkers are needed that distinguish those with GWI. Prior chemical exposures during deployment have been associated in epidemiologic studies with altered central nervous system functioning in veterans with GWI. Previous studies from our group have demonstrated the presence of autoantibodies to essential neuronal and glial proteins in patients with brain injury and autoantibodies have been identified as candidate objective markers that may distinguish GWI...
March 9, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28263856/childhood-and-adolescent-fish-consumption-and-adult-neuropsychological-performance-an-analysis-from-the-cape-cod-health-study
#8
Lindsey J Butler, Patricia A Janulewicz, Jenny L Carwile, Roberta F White, Michael R Winter, Ann Aschengrau
OBJECTIVE: This exploratory analysis examines the relationship between childhood and adolescent fish consumption and adult neuropsychological performance. DESIGN: Data from a retrospective cohort study that assessed fish consumption from age 7 to 18years via questionnaire were analyzed. A subset of the population underwent domain-specific neuropsychological assessment. Functions evaluated included omnibus intelligence, academic achievement, language, visuospatial skills, learning and memory, attention and executive function, fine motor coordination, mood, and motivation to perform...
March 3, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28259732/prenatal-exposure-to-anxiolytic-and-hypnotic-medication-in-relation-to-behavioral-problems-in-childhood-a-population-based-cohort-study
#9
Maja R Radojčić, Hanan El Marroun, Branislava Miljković, Bruno H C Stricker, Vincent W V Jaddoe, Frank C Verhulst, Tonya White, Henning Tiemeier
Benzodiazepines and benzodiazepine-related medications (BBRMs) are anxiolytics and hypnotics acting on γ-amino butyric acid (GABA)A receptors. BBRMs are assumed to have a low potential for major congenital malformations, but research on more subtle and protracted developing symptoms of these medications is lacking. Therefore, we prospectively investigated the association between BBRM use in pregnancy and long-term effects on child behavior in a large population-based cohort study. The study population consisted of 104 children prenatally exposed to BBRM, 527 children exposed to maternal prenatal anxiety or phobic anxiety symptoms (without exposure to BBRM), and 5609 control children...
March 1, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28242457/prenatal-tobacco-exposure-maternal-postnatal-nicotine-dependence-and-adolescent-risk-for-nicotine-dependence-birth-cohort-study
#10
Natacha M De Genna, Lidush Goldschmidt, Nancy L Day, Marie D Cornelius
AIMS: The goals of this study are to determine if there is (a) a threshold effect for prenatal tobacco exposure (PTE) on adolescent risk for nicotine dependence, and (b) an additive effect of PTE and maternal postnatal nicotine dependence on adolescent risk for nicotine dependence. METHODS: Pregnant women were recruited in their 4th or 5th gestational month and asked about cigarette use during the first trimester. Mothers reported on third trimester cigarette use at delivery...
February 24, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28223149/long-term-behavioral-change-as-a-result-of-acute-ethanol-exposure-in-zebrafish-evidence-for-a-role-for-sonic-hedgehog-but-not-retinoic-acid-signaling
#11
Derek F Burton, Chengjin Zhang, Oswald Boa-Amponsem, Shanta Mackinnon, Gregory J Cole
BACKGROUND: Developmental exposure to ethanol is recognized to produce long-term neurobehavioral impairment in multiple animal models. However, the molecular mechanisms underlying these deficits remain poorly understood. The present study was undertaken to ascertain whether two well-characterized targets of prenatal alcohol exposure, sonic hedgehog (Shh) and retinoic acid (RA), that induce the hallmark morphological phenotypes of fetal alcohol spectrum disorders (FASD), are involved in the generation of behavioral alterations as a result of alcohol exposure...
February 20, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28212938/the-combined-effects-of-3-4-methylenedioxymethamphetamine-mdma-and-selected-substituted-methcathinones-on-measures-of-neurotoxicity
#12
Nicholas B Miner, James P O'Callaghan, Tamara J Phillips, Aaron Janowsky
The rise in popularity of substituted methcathinones (aka "bath salts") has increased the focus on their neurotoxic effects. Two commonly abused methcathinones, 3,4-methylenedioxymethcathinone (methylone, MDMC) and 3,4-methylenedioxypyrovalerone (MDPV), are often concomitantly ingested with the illicit drug 3,4-methylenedioxymethamphetamine (MDMA). To examine potential neurotoxic effects of these drug combinations, C57BL/6J mice were administered 4 i.p. injection of the drugs, at 2h intervals, either singularly: MDMA 15 or 30mg/kg, methylone 20mg/kg, MDPV 1mg/kg; or in combination: methylone/MDMA 20/15mg/kg, MDPV/MDMA 1/15mg/kg...
February 16, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28188837/response-to-golub-herr-and-sobin
#13
LETTER
Lori L Driscoll
No abstract text is available yet for this article.
February 7, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28179122/introduction-to-the-special-issue-developmental-neurotoxicity-associated-with-pediatric-general-anesthesia-preclinical-findings
#14
EDITORIAL
Vesna Jevtovic-Todorovic, Philip J Bushnell, Merle G Paule
No abstract text is available yet for this article.
February 4, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28163169/does-maoa-increase-susceptibility-to-prenatal-stress-in-young-children
#15
Suena H Massey, Amalia E Hatcher, Caron A C Clark, James L Burns, Daniel S Pine, Andrew D Skol, Daniel K Mroczek, Kimberly A Espy, David Goldman, Edwin Cook, Lauren S Wakschlag
BACKGROUND: We previously demonstrated a gene-by-prenatal-environment interaction whereby the monoamine oxidase A gene (MAOA) modified the impact of prenatal tobacco exposure (PTE) on adolescent disruptive behavior (DB), with the MAOA risk genotype varying by sex. We extend this work by examining whether this mechanism is evident with another common adversity, prenatal stress exposure (PSE), and whether sex differences are present earlier in development in closer proximity to exposure...
February 3, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28039052/a-holistic-approach-to-anesthesia-induced-neurotoxicity-and-its-implications-for-future-mechanistic-studies
#16
Christine N Zanghi, Vesna Jevtovic-Todorovic
The year 2016 marked the 15th anniversary since anesthesia-induced developmental neurotoxicity and its resulting cognitive dysfunction were first described. Since that time, multiple scientific studies have supported these original findings and investigated possible mechanisms behind anesthesia-induced neurotoxicity. This paper reviews the existing mechanistic literature on anesthesia-induced neurotoxicity in the context of a holistic approach that emphasizes the importance of both neuronal and non-neuronal cells during early postnatal development...
March 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/27989695/the-genetics-of-isoflurane-induced-developmental-neurotoxicity
#17
Hyo-Seok Na, Nicole L Brockway, Katherine R Gentry, Elyce Opheim, Margaret M Sedensky, Philip G Morgan
INTRODUCTION: Neurotoxicity induced by early developmental exposure to volatile anesthetics is a characteristic of organisms across a wide range of species, extending from the nematode C. elegans to mammals. Prevention of anesthetic-induced neurotoxicity (AIN) will rely upon an understanding of its underlying mechanisms. However, no forward genetic screens have been undertaken to identify the critical pathways affected in AIN. By characterizing such pathways, we may identify mechanisms to eliminate isoflurane induced AIN in mammals...
March 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/27876652/isoflurane-exposure-leads-to-apoptosis-of-neurons-and-oligodendrocytes-in-20-and-40-day-old-rhesus-macaques
#18
Katie J Schenning, Kevin K Noguchi, Lauren Drew Martin, Francesca M Manzella, Omar H Cabrera, Gregory A Dissen, Ansgar M Brambrink
Previously we reported that a 5-hour exposure of 6-day-old (P6) rhesus macaques to isoflurane triggers robust neuron and oligodendrocyte apoptosis. In an attempt to further describe the window of vulnerability to anesthetic neurotoxicity, we exposed P20 and P40 rhesus macaques to 5h of isoflurane anesthesia or no exposure (control animals). Brains were collected 3h later and examined immunohistochemically to analyze neuronal and glial apoptosis. Brains exposed to isoflurane displayed neuron and oligodendrocyte apoptosis distributed throughout cortex and white matter, respectively...
March 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/27856360/sensitivity-to-isoflurane-anesthesia-increases-in-autism-spectrum-disorder-shank3-%C3%A2-c-mutant-mouse-model
#19
Changsheng Li, Michele Schaefer, Christy Gray, Ya Yang, Orion Furmanski, Sufang Liu, Paul Worley, C David Mintz, Feng Tao, Roger A Johns
Autism is a heterogeneous developmental disorder characterized by impaired social interaction, impaired communication skills, and restricted and repetitive behavior. The abnormal behaviors of these patients can make their anesthetic and perioperative management difficult. Evidence in the literature suggests that some patients with autism or specific autism spectrum disorders (ASD) exhibit altered responses to pain and to anesthesia or sedation. A genetic mouse model of one particular ASD, Phelan McDermid Syndrome, has been developed that has a Shank3 haplotype truncation (Shank3(+/Δc))...
March 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/27856359/anesthetic-neurotoxicity-apoptosis-and-autophagic-cell-death-mediated-by-calcium-dysregulation
#20
Meirong Yang, Huafeng Wei
A number of findings suggested that general anesthetics induced neural cell death by apoptosis in various animal models. Although clinical evidence regarding the correlation between anesthetic exposures at young age and subsequent cognitive impairments remains unclear, repeated or consistent exposures to general anesthetics may be a potential harmful risk in developing human brains. The mechanisms underlying the anesthetic neurotoxicity have received extensive attention recently. We will attempt a brief review to summarize current understanding on the role of both apoptosis and autophagic cell death mediated by calcium dysregulation in anesthetic neurotoxicity...
March 2017: Neurotoxicology and Teratology
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