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Neurotoxicology and Teratology

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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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/28131877/carbon-monoxide-incompletely-prevents-isoflurane-induced-defects-in-murine-neurodevelopment
#12
Li Wang, Aili Wang, William W Supplee, Kayla Koffler, Ying Cheng, Zenaide M N Quezado, Richard J Levy
BACKGROUND: Commonly used anesthetics have been shown to disrupt neurodevelopment in preclinical models.It has been proposed that such anesthesia-induced neurotoxicity is mediated by apoptotic neurodegeneration in the immature brain.Low dose carbon monoxide (CO) exerts cytoprotective properties and we have previously demonstrated that CO inhibits isoflurane-induced apoptosis in the developing murine brain.Here we utilized anti-apoptotic concentrations of CO to delineate the role of apoptotic neurodegeneration in anesthesia-induced neurotoxicity by assessing the effect of CO on isoflurane-induced defects in neurodevelopment...
January 25, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28109771/assessment-of-learning-memory-and-attention-in-developmental-neurotoxicology-regulatory-testing-commentary-on-essentiality-of-cognitive-assessment-for-protecting-child-health
#13
Charles V Vorhees
This commentary is in response to the remarks of Drs. Christina Sobin, Mari Golub, and David Herr on the Special Issue of this Journal entitled "Assessment of Learning, Memory, and Attention in Developmental Neurotoxicology Regulatory Testing." I endorse the views expressed by Drs. Sobin, Golub, and Herr and add some discussion on a recent Organization on Economic Cooperation and Development (OECD) guideline, the Extended One Generation Reproductive Toxicology Guideline (OECD 446), in which testing for higher cognitive function (learning and memory) has been eliminated...
January 18, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28089843/early-chronic-low-level-pb-exposure-alters-global-exploratory-behaviors-but-does-not-impair-spatial-and-object-memory-retrieval-in-an-object-in-place-task-in-pre-adolescent-c57bl-6j-mice
#14
Christina Sobin, Mayra Gisel Flores-Montoya, Juan Manuel Alvarez
The mechanisms by which early chronic low-level lead (Pb) exposure disrupts the developing brain are not yet understood. Rodent models have provided promising results however behavioral tests sensitive to effects at lowest levels of exposure during development are needed. Preadolescent animals (N=52) exposed to low and higher levels of Pb via lactation from birth to PND 28 completed the Object-in-Place Task of visual spatial and visual object memory retrieval (at PND 28). Generalized linear mixed models were used, controlling for sex and litter as a random effect...
January 12, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28065636/neuroprotection-and-neurotoxicity-in-the-developing-brain-an-update-on-the-effects-of-dexmedetomidine-and-xenon
#15
Azeem Alam, Ka Chun Suen, Zac Hana, Robert D Sanders, Mervyn Maze, Daqing Ma
Growing and consistent preclinical evidence, combined with early clinical epidemiological observations, suggest potentially neurotoxic effects of commonly used anesthetic agents in the developing brain. This has prompted the FDA to issue a safety warning for all sedatives and anesthetics approved for use in children under three years of age. Recent studies have identified dexmedetomidine, the potent α2-adrenoceptor agonist, and xenon, the noble gas, as effective anesthetic adjuvants that are both less neurotoxic to the developing brain, and also possess neuroprotective properties in neonatal and other settings of acute ongoing neurologic injury...
January 6, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28043908/cognitive-neuroscience-and-developmental-neurotoxicity-testing
#16
LETTER
Mari S Golub
No abstract text is available yet for this article.
December 30, 2016: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/27989697/developmental-benzo-a-pyrene-b-a-p-exposure-impacts-larval-behavior-and-impairs-adult-learning-in-zebrafish
#17
Andrea L Knecht, Lisa Truong, Michael T Simonich, Robert L Tanguay
Polycyclic aromatic hydrocarbons (PAHs) are produced from incomplete combustion of organic materials or fossil fuels, and are present in crude oil and coal; therefore, they are ubiquitous environmental contaminants present in urban air, dust, soil, and water. It is widely recognized that PAHs pose risks to human health, especially for the developing fetus and infant where PAH exposures have been linked to in-utero mortality, cardiovascular effects, and lower intelligence. Using the zebrafish model, we evaluated the developmental toxicity of benzo[a]pyrene (B[a]P)...
January 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/27989696/methyl-mercury-exposure-and-neurodevelopmental-outcomes-in-the-seychelles-child-development-study-main-cohort-at-age-22-and-24years
#18
Edwin van Wijngaarden, Sally W Thurston, Gary J Myers, Donald Harrington, Deborah A Cory-Slechta, J J Strain, Gene E Watson, Grazyna Zareba, Tanzy Love, Juliette Henderson, Conrad F Shamlaye, Philip W Davidson
BACKGROUND: All fish contain methyl mercury (MeHg), a known neurotoxicant at adequate dosage. There is still substantial scientific uncertainty about the consequences, if any, of mothers consuming fish with naturally-acquired levels of MeHg contamination. In 1989-1990, we recruited the Main Cohort of the Seychelles Child Development Study to assess the potential developmental effects of prenatal MeHg exposure. We report here on associations with neurodevelopmental outcomes obtained at 22 and 24years of age...
January 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/27756629/developmental-manganese-neurotoxicity-in-rats-cognitive-deficits-in-allocentric-and-egocentric-learning-and-memory
#19
Robyn M Amos-Kroohs, Laurie L Davenport, Nina Atanasova, Zuhair I Abdulla, Matthew R Skelton, Charles V Vorhees, Michael T Williams
Manganese (Mn) is an essential element but neurotoxic at higher exposure levels. The effects of Mn overexposure (MnOE) on hippocampal and striatal-dependent learning and memory in rats were tested in combination with iron deficiency (FeD) and developmental stress that often co-occur with MnOE. Moderate FeD affects up to 15% of U.S. children and developmental stress is common in lower socio-economic areas where MnOE occurs. Pregnant Sprague-Dawley rats and their litters were housed in cages with or without (barren cage (BAR)) standard bedding from embryonic day (E)7 to postnatal day (P)28...
January 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/27751817/prenatal-arsenic-exposure-alters-rest-nrsf-and-microrna-regulators-of-embryonic-neural-stem-cell-fate-in-a-sex-dependent-manner
#20
Christina R Tyler, Matthew T Labrecque, Elizabeth R Solomon, Xun Guo, Andrea M Allan
Exposure to arsenic, a common environmental toxin found in drinking water, leads to a host of neurological pathologies. We have previously demonstrated that developmental exposure to a low level of arsenic (50ppb) alters epigenetic processes that underlie deficits in adult hippocampal neurogenesis leading to aberrant behavior. It is unclear if arsenic impacts the programming and regulation of embryonic neurogenesis during development when exposure occurs. The master negative regulator of neural-lineage, REST/NRSF, controls the precise timing of fate specification and differentiation of neural stem cells (NSCs)...
January 2017: Neurotoxicology and Teratology
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