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https://www.readbyqxmd.com/read/27906509/principles-of-brain-development
#1
REVIEW
Joan Stiles
Throughout much of the 20th century, the major models of brain development were strongly deterministic. It was thought that brain development proceeds via a prescribed blueprint that is somehow innately specified in the organism. Contemporary models present a distinctly different view of both inheritance and brain development. First, we do not inherit blueprints or plans, we inherit genes and the cellular machinery for expressing them. Genes carry essential information for creating proteins, but do not determine biological processes or developmental outcomes; the first cells contain the elements necessary for creating proteins based on the information coded in the nucleotide sequences of genes...
December 1, 2016: Wiley Interdisciplinary Reviews. Cognitive Science
https://www.readbyqxmd.com/read/27906174/therapeutic-advantage-of-pro-electrophilic-drugs-to-activate-the-nrf2-are-pathway-in-alzheimer-s-disease-models
#2
Stuart A Lipton, Tayebeh Rezaie, Anthony Nutter, Kevin M Lopez, James Parker, Kunio Kosaka, Takumi Satoh, Scott R McKercher, Eliezer Masliah, Nobuki Nakanishi
Alzheimer's disease (AD) is characterized by synaptic and neuronal loss, which occurs at least partially through oxidative stress induced by oligomeric amyloid-β (Aβ)-peptide. Carnosic acid (CA), a chemical found in rosemary and sage, is a pro-electrophilic compound that is converted to its active form by oxidative stress. The active form stimulates the Keap1/Nrf2 transcriptional pathway and thus production of phase 2 antioxidant enzymes. We used both in vitro and in vivo models. For in vitro studies, we evaluated protective effects of CA on primary neurons exposed to oligomeric Aβ...
December 1, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27903255/epigenetic-evidence-for-involvement-of-the-oxytocin-receptor-gene-in-obsessive-compulsive-disorder
#3
Carolina Cappi, Juliana Belo Diniz, Guaraci L Requena, Tiaya Lourenço, Bianca Cristina Garcia Lisboa, Marcelo Camargo Batistuzzo, Andrea H Marques, Marcelo Q Hoexter, Carlos A Pereira, Euripedes Constantino Miguel, Helena Brentani
BACKGROUND: Obsessive-compulsive disorder (OCD) is a chronic neurodevelopmental disorder that affects up to 3% of the general population. Although epigenetic mechanisms play a role in neurodevelopment disorders, epigenetic pathways associated with OCD have rarely been investigated. Oxytocin is a neuropeptide involved in neurobehavioral functions. Oxytocin has been shown to be associated with the regulation of complex socio-cognitive processes such as attachment, social exploration, and social recognition, as well as anxiety and other stress-related behaviors...
November 30, 2016: BMC Neuroscience
https://www.readbyqxmd.com/read/27901414/cognitive-deficits-and-inflammatory-response-resulting-from-mild-to-moderate-traumatic-brain-injury-in-rats-are-exacerbated-by-repeated-pre-exposure-to-an-innate-stress-stimulus
#4
Michaël Ogier, Amor Belmeguenai, Thomas Lieutaud, Béatrice Georges, Sandrine Bouvard, Emilie Carré, Frédéric Canini, Laurent Bezin
Traumatic brain injury (TBI) is common in both military and civilian populations, and often results in neurobehavioral sequelae that impair quality of life in both patients and their family. Although individuals who are chronically exposed to stress are more likely to experience TBI, it is still unknown whether pre-injury stress influences the outcome after TBI. The present study tested whether behavioral and cognitive long-term outcome after TBI in rats is affected by prior exposure to an innate stress stimulus...
November 30, 2016: Journal of Neurotrauma
https://www.readbyqxmd.com/read/27900576/time-course-behavioral-safety-and-protective-efficacy-of-centrally-active-reversible-acetylcholinesterase-inhibitors-in-cynomolgus-macaques
#5
Lindsey R Hamilton, Steven C Schachter, Todd M Myers
Galantamine hydrobromide and (-)huperzine A, centrally active reversible acetylcholinesterase inhibitors, are potentially superior to the current standard, pyridostigmine bromide, as a pretreatment for organophosphorus chemical warfare nerve agent intoxication. Galantamine, huperzine, and pyridostigmine were compared for time course of acetylcholinesterase inhibition in 12 cynomolgus macaques. Although both galantamine and huperzine shared a similar time course profile for acetylcholinesterase inhibition, huperzine was 88 times more potent than galantamine...
November 30, 2016: Neurochemical Research
https://www.readbyqxmd.com/read/27900211/in-vivo-expression-of-reprogramming-factors-increases-hippocampal-neurogenesis-and-synaptic-plasticity-in-chronic-hypoxic-ischemic-brain-injury
#6
Soohyun Wi, Ji Hea Yu, MinGi Kim, Sung-Rae Cho
Neurogenesis and synaptic plasticity can be stimulated in vivo in the brain. In this study, we hypothesized that in vivo expression of reprogramming factors such as Klf4, Sox2, Oct4, and c-Myc would facilitate endogenous neurogenesis and functional recovery. CD-1® mice were induced at 1 week of age by unilaterally carotid artery ligation and exposure to hypoxia. At 6 weeks of age, mice were injected GFP only or both four reprogramming factors and GFP into lateral ventricle. Passive avoidance task and open field test were performed to evaluate neurobehavioral function...
2016: Neural Plasticity
https://www.readbyqxmd.com/read/27898404/prolonged-fasting-improves-endothelial-progenitor-cell-mediated-ischemic-angiogenesis-in-mice
#7
Bao Xin, Chun-Long Liu, Hong Yang, Cheng Peng, Xiao-Hui Dong, Chuan Zhang, Alex F Chen, He-Hui Xie
BACKGROUND/AIMS: Prolonged fasting (PF) was shown to be of great potency to promote optimal health and reduce the risk of many chronic diseases. This study sought to determine the effect of PF on the endothelial progenitor cell (EPC)-mediated angiogenesis in the ischemic brain and cerebral ischemic injury in mice. METHODS: Mice were subjected to PF or periodic PF after cerebral ischemia, and histological analysis and behavioral tests were performed. Mouse EPCs were isolated and examined, and the effects of EPC transplantation on cerebral ischemic injury were investigated in mice...
November 30, 2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27898327/effects-of-three-different-embryonic-exposure-modes-of-2-2-4-4-tetrabromodiphenyl-ether-on-the-path-angle-and-social-activity-of-zebrafish-larvae
#8
Bin Zhang, Xiaoling Chen, Ruijie Pan, Ting Xu, Jing Zhao, Wenping Huang, Youyu Liu, Daqiang Yin
The toxicological research of polybrominated diphenyl ethers (PBDEs) has focused on its neurotoxicity; however, many questions still remain. For example, behavioral effects other than basic locomotion are seldom reported. To further evaluate the neurobehavioral toxicity of 2, 2', 4, 4'-tetrabromodiphenyl ether (BDE-47), a typical PBDE congener in animal tissues, we employed three different exposure modes, namely, continuous, early pulse, and interval exposure, to investigate the path angle and social activity changes of zebrafish larvae exposed to BDE-47 using automated equipment (Zebrabox)...
November 26, 2016: Chemosphere
https://www.readbyqxmd.com/read/27898153/postconcussive-symptom-overreporting-in-iraq-afghanistan-veterans-with-mild-traumatic-brain-injury
#9
Sarah M Jurick, Elizabeth W Twamley, Laura D Crocker, Chelsea C Hays, Henry J Orff, Shahrokh Golshan, Amy J Jak
A comprehensive evaluation, including the assessment of neurobehavioral symptoms, has been instituted at the Department of Veterans Affairs (VA) healthcare system to address the large number of Operation Iraqi Freedom/Operation Enduring Freedom (OIF/OEF) Veterans returning with mild traumatic brain injuries (mTBIs). The Validity-10 is measure of symptom overreporting embedded within the Neurobehavioral Symptom Inventory, a component of the comprehensive evaluation that assesses postconcussive symptom severity...
2016: Journal of Rehabilitation Research and Development
https://www.readbyqxmd.com/read/27897151/effect-of-intermittent-hypoxic-training-on-hypoxia-tolerance-based-on-brain-functional-connectivity
#10
Guang Li, Tinglin Zhang, Xiaojian Chen, Chungang Shang, You Wang
The difference of brain functional connectivity between hypoxic and normal states was studied. The impact of intermittent hypoxic training on the hypoxia tolerance of the brain was explored. Multivariable empirical mode decomposition was applied to extract common inherent modes of multichannel EEG adaptively instead of a priori selection of filter bandwidth, and the first two scales of intrinsic mode functions expressed the differences in brain connectivity. To quantify synchronization and search for consistent performance, coherence, phase locking value and synchronization likelihood were all utilized...
November 29, 2016: Physiological Measurement
https://www.readbyqxmd.com/read/27895577/fus1-ko-mouse-as-a-model-of-oxidative-stress-mediated-sporadic-alzheimer-s-disease-circadian-disruption-and-long-term-spatial-and-olfactory-memory-impairments
#11
Guillermo Coronas-Samano, Keeley L Baker, Winston J T Tan, Alla V Ivanova, Justus V Verhagen
Insufficient advances in the development of effective therapeutic treatments of sporadic Alzheimer's Disease (sAD) to date are largely due to the lack of sAD-relevant animal models. While the vast majority of models do recapitulate AD's hallmarks of plaques and tangles by virtue of tau and/or beta amyloid overexpression, these models do not reflect the fact that in sAD (unlike familial AD) these genes are not risk factors per se and that other mechanisms like oxidative stress, metabolic dysregulation and inflammation play key roles in AD etiology...
2016: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/27890345/prenatal-exposure-to-outdoor-air-pollution-and-child-behavioral-problems-at-school-age-in-japan
#12
Takashi Yorifuji, Saori Kashima, Midory Higa Diez, Yoko Kado, Satoshi Sanada, Hiroyuki Doi
INTRODUCTION: Recent studies suggest positive associations between prenatal exposure to ambient air pollution and neurodevelopment of children, but evidence on the adverse effects of exposure to air pollution on child neurobehavioral development remains limited. We thus examined associations between prenatal exposure to outdoor air pollution and child behavioral problems at school age, using data from a nationwide population-based longitudinal survey in Japan, where participants were recruited in 2001 and are continuously followed...
November 24, 2016: Environment International
https://www.readbyqxmd.com/read/27889957/acute-or-delayed-treatment-with-anatabine-improves-spatial-memory-and-reduces-pathological-sequelae-at-chronic-timepoints-after-repetitive-mild-tbi
#13
Scott Ferguson, Benoit Christian Mouzon, Daniel Paris, Destinee Aponte, Laila Abdullah, William Stewart, Michael Mullan, Fiona C Crawford
Traumatic brain injury (TBI) has chronic and long term consequences for which there are currently no approved pharmacological treatments. We have previously characterized the chronic neurobehavioral and pathological sequelae of a mouse model of repetitive mild TBI (r-mTBI) to two years post-TBI. Despite the mild nature of the initial insult, secondary injury processes are initiated which involve neuroinflammatory and neurodegenerative pathways persisting and progressing for weeks and months post-injury and providing a potential window of opportunity for therapeutic intervention...
November 27, 2016: Journal of Neurotrauma
https://www.readbyqxmd.com/read/27888120/gestational-exposure-to-perfluorooctanoic-acid-pfoa-alterations-in-motor-related-behaviors
#14
David R Goulding, Sally S White, Sandra J McBride, Suzanne E Fenton, G Jean Harry
Perfluoroalkyl and polyfluoroalkyl substances are used in commercial applications and developmental exposure has been implicated in alterations in neurobehavioral functioning. While associations between developmental perfluorooctanoic acid (PFOA) exposure and human outcomes have been inconsistent, studies in experimental animals suggest alterations in motor related behaviors. To examine a dose-response pattern of neurobehavioral effects following gestational exposure to PFOA, pregnant CD-1 mice received PFOA (0, 0...
November 22, 2016: Neurotoxicology
https://www.readbyqxmd.com/read/27888119/prenatal-phthalate-triclosan-and-bisphenol-a-exposures-and-child-visual-spatial-abilities
#15
Joseph M Braun, David C Bellinger, Russ Hauser, Robert O Wright, Aimin Chen, Antonia M Calafat, Kimberly Yolton, Bruce P Lanphear
INTRODUCTION: During fetal development, sex steroids influence sexually dimorphic behaviors, such as visual-spatial abilities. Thus, endocrine disrupting chemicals that impact sex steroids during gestation may affect these behaviors. OBJECTIVE: We investigated the relationship between prenatal urinary phthalate metabolite, triclosan, and BPA concentrations and visual-spatial abilities in a prospective cohort of 198 mother-child dyads. METHODS: Data are from a prospective cohort in Cincinnati, OH (HOME Study)...
November 23, 2016: Neurotoxicology
https://www.readbyqxmd.com/read/27885483/neuroborreliosis
#16
John J Halperin
Appropriate, critical application of evidence-based diagnostic criteria enables both a clear definition of what constitutes neuroborreliosis-nervous system infection with Borrelia burgdorferi sensu stricto in the US, B garinii and less commonly B. afzelii and other species in Europe-and recognition that this disorder is quite similar in Europe and the US. Most commonly evidenced by lymphocytic meningitis and/or multifocal inflammation of the peripheral (common; cranial neuropathy, radiculopathy, mononeuropathy multiplex) or central (rare) nervous system, it is readily diagnosed and highly antibiotic responsive...
November 24, 2016: Journal of Neurology
https://www.readbyqxmd.com/read/27884068/silver-nanoparticle-exposure-in-pregnant-rats-increases-gene-expression-of-tyrosine-hydroxylase-and-monoamine-oxidase-in-offspring-brain
#17
Seyed Reza Fatemi Tabatabaie, Babak Mehdiabadi, Najmeh Mori Bakhtiari, Mohammad Reza Tabandeh
CONTEXT: Maternal exposure to silver nanoparticles (AgNPs) affects neurobehavioral reflexes and spatial memory formation in offspring. Although the transmission of AgNPs into the brain has been reported, its toxic effect on dopamine metabolism in the brain of offspring has not been studied so far. OBJECTIVE: The aim of the present study was to investigate the expression levels of tyrosine hydroxylase (TH) and monoamine oxidase A (MAO-A) genes in the brain of offspring exposed in utero to various concentrations of AgNPs...
November 24, 2016: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/27882110/intermittent-fasting-is-neuroprotective-in-focal-cerebral-ischemia-by-minimizing-autophagic-flux-disturbance-and-inhibiting-apoptosis
#18
Ji Heun Jeong, Kwang Sik Yu, Dong Ho Bak, Je Hun Lee, Nam Seob Lee, Young Gil Jeong, Dong Kwan Kim, Jwa-Jin Kim, Seung-Yun Han
Previous studies have demonstrated that autophagy induced by caloric restriction (CR) is neuroprotective against cerebral ischemia. However, it has not been determined whether intermittent fasting (IF), a variation of CR, can exert autophagy-related neuroprotection against cerebral ischemia. Therefore, the neuroprotective effect of IF was evaluated over the course of two weeks in a rat model of focal cerebral ischemia, which was induced by middle cerebral artery occlusion and reperfusion (MCAO/R). Specifically, the role of autophagy modulation as a potential underlying mechanism for this phenomenon was investigated...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27881769/sex-in-context-limitations-of-animal-studies-for-addressing-human-sex-gender-neurobehavioral-health-disparities
#19
Lise Eliot, Sarah S Richardson
Many brain and behavioral disorders differentially affect men and women. The new National Institutes of Health requirement to include both male and female animals in preclinical studies aims to address such health disparities, but we argue that the mandate is not the best solution to this problem. Sex differences are highly species-specific, tied to the mating system and social ecology of a given species or even strain of animal. In many cases, animals poorly replicate male-female differences in brain-related human diseases...
November 23, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27876130/the-potential-behavioral-and-economic-impacts-of-widespread-hmg-coa-reductase-inhibitor-statin-use
#20
Mathew H Gendle
Dyslipidemia is a common pathology throughout the industrialized world, and HMG-CoA reductase inhibitors (statins) are often administered to treat elevated lipid levels. Substantial concern has been raised regarding the aggressive clinical lowering of cholesterol, particularly in light of a growing body of research linking low circulating lipid levels with negative behavioral outcomes in both human samples and non-human primate models. In 2009, Goldstein and colleagues tentatively speculated that the greed, impulsiveness, and lack of foresight that lead to the worldwide economic collapse in 2007-2008 could have been caused (in part) by depressed population cholesterol levels resulting from the widespread use of statins by workers in the financial services industry...
December 2016: Medical Hypotheses
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