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Behavioural Brain Research

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https://www.readbyqxmd.com/read/28432010/exposure-to-an-enriched-environment-facilitates-motor-recovery-and-prevents-short-term-memory-impairment-and-reduction-of-striatal-bdnf-in-a-progressive-pharmacological-model-of-parkinsonism-in-mice
#1
Clarissa L C Campêlo, José R Santos, Anatildes F Silva, Aline L Dierschnabel, André Pontes, Jeferson S Cavalcante, Alessandra M Ribeiro, Regina H Silva
Previous studies showed that the repeated administration with a low dose of reserpine (RES) induces a gradual appearance of motor signs and cognitive deficits compatible with parkinsonism in rodents. Environmental stimulation has neuroprotective effects in animal models of neurodegenerative damage, including acutely induced PD. We investigated the effects of exposure to an enriched environment (EE) on motor, cognitive and neuronal (levels of tyrosine hydroxylase, TH and brain derived neurotrophic factor, BDNF) deficits induced by a progressive model of PD in mice...
April 18, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28432009/the-lateral-hypothalamus-to-lateral-habenula-projection-but-not-the-ventral-pallidum-to-lateral-habenula-projection-regulates-voluntary-ethanol-consumption
#2
Chandni Sheth, Teri M Furlong, Kristen A Keefe, Sharif A Taha
The lateral habenula (LHb) is an epithalamic brain region implicated in aversive processing via negative modulation of midbrain dopamine (DA) and serotonin (5-HT) systems. Given the role of the LHb in inhibiting DA and 5-HT systems, it is thought to be involved in various psychiatric pathologies, including drug addiction. In support, it has been shown that LHb plays a critical role in cocaine- and ethanol-related behaviors, most likely by mediating drug-induced aversive conditioning. In our previous work, we showed that LHb lesions increased voluntary ethanol consumption and operant ethanol self-administration and blocked yohimbine-induced reinstatement of ethanol self-administration...
April 18, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28419850/overpressure-blast-injury-induced-oxidative-stress-and-neuroinflammation-response-in-rat-frontal-cortex-and-cerebellum
#3
Hale Z Toklu, Zhihui Yang, Sehkar Oktay, Yasemin Sakarya, Nataliya Kirichenko, Michael K Matheny, Judy Muller-Delp, Kevin Strang, Philip J Scarpace, Kevin K W Wang, Nihal Tümer
BACKGROUND & AIM: Overpressure blast-wave induced brain injury (OBI) and its long-term neurological outcome pose significant concerns for military personnel. Our aim is to investigate the mechanism of injury due to OBI. METHODS: Rats were divided into 3 groups: 1) Control, 2) OBI (exposed 30psi peak pressure, 2-2.5ms), 3) Repeated OBI (r-OBI) (three exposures over one-week period). Lung and brain (cortex and cerebellum) tissues were collected at 24h post injury...
April 15, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28412306/time-dependent-sensitization-of-antipsychotic-effect-in-adolescent-male-and-female-rats
#4
Xiaojing Ding, Xiaonan Li, Qing Shu, Ruiyong Wu, Gang Hu, Ming Li
Many behavioral and biological effects of a psychoactive drug often undergo time-dependent change following even one single drug exposure. The present study examined whether one or two exposures of haloperidol, olanzapine or clozapine would also induce a time-dependent change in their behavioral effects in adolescent rats and whether such a change vary between sexes. Adolescent Sprague-Dawley rats (<40days old) were first treated with one single injection of haloperidol (0.05 and 0.1mg/kg, sc), clozapine (10...
April 12, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28412305/memantine-improves-outcomes-after-repetitive-traumatic-brain-injury
#5
Zhengrong Mei, Jianhua Qiu, Sasha Alcon, Jumana Hashim, Alexander Rotenberg, Yan Sun, William P Meehan, Rebekah Mannix
Repetitive mild traumatic brain injury (rmTBI; e.g., sports concussions) is common and results in significant cognitive impairment. Targeted therapies for rmTBI are lacking, though evidence from other injury models indicates that targeting N-methyl-d-aspartate (NMDA) receptor (NMDAR)-mediated glutamatergic toxicity might mitigate rmTBI-induced neurologic deficits. However, there is a paucity of preclinical or clinical data regarding NMDAR antagonist efficacy in the rmTBI setting. To test whether NMDAR antagonist therapy improves outcomes after rmTBI, mice were subjected to rmTBI injury (4 injuries in 4 days) and randomized to treatment with the NMDA antagonist memantine or with vehicle...
April 12, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28411149/neuroprotective-effect-of-three-caffeic-acid-derivatives-via-ameliorate-oxidative-stress-and-enhance-pka-creb-signaling-pathway
#6
Wei Fu, Hongyan Wang, Xiuhua Ren, Hengyi Yu, Yongfang Lei, Qian Chen
This study was conducted to elucidate the neuroprotective effect of caffeic acid phenethyl ester (CAPE), (R)-2-Hydroxy-3-(3,4-dihydroxyphenyl) propionic acid (Danshensu) and Curcumin, three caffeic acid derivatives which are contained in fruits, grains and certain dietary supplements. Our results showed that these compounds significantly attenuated H2O2-induced toxicity in PC12 cells in a dose-dependent manner. Furthermore, these compounds significantly improved the behavioral performance of d-gal-treated mice in both step-down avoidance test and Morris water maze test...
April 11, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28411148/behavioural-characterization-of-ankyring-deficient-mice-a-model-for-ank3-related-disorders
#7
I M van der Werf, D Van Dam, S Missault, B Yalcin, P P De Deyn, G Vandeweyer, R F Kooy
ANK3 encodes AnkyrinG (AnkG), a member of the Ankyrin family that is expressed in several different isoforms in many tissues. A unique serine-rich domain and tail domain in the two largest isoforms of AnkG (270 and 480kDa), restrict AnkG to the axon initial segment and nodes of Ranvier of myelinated neurons. At these sites, AnkG is a master regulator, coordinating the strict clustering of components necessary for proper action potential initiation and propagation along the axon. These components include voltage-gated sodium channels, potassium channels and members of the L1 cell adhesion molecule family...
April 11, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28408297/time-source-of-neural-plasticity-in-complex-bimanual-coordinative-tasks-juggling
#8
Marika Berchicci, Federico Quinzi, Andrea Dainese, Francesco Di Russo
Brain plasticity is especially stimulated by complex bimanual tasks, because, as for juggling, they require simultaneous control of multiple movements, high level of bimanual coordination, balance and sustained swapping attention to multiple objects interacting with both hands. Neuroimaging studies on jugglers showed changes in white and grey matter after juggling training, while the very few electroencephalographic (EEG) studies showed changes in the frequency domain. However, no study has focused on the fine temporal brain activations during a bimanual coordinative task in ecological settings...
April 11, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28408300/%C3%AE-9-nachr-knockout-mice-exhibit-dysregulation-of-stress-responses-affect-and-reward-related-behaviour
#9
Sarasa A Mohammadi, Thomas J Burton, MacDonald J Christie
The α9α10-subtype of nicotinic acetylcholine receptor (nAChR) has recently garnered interest in biomedicine and is being pursued as an analgesic target. However, the receptor exhibits diverse tissue distribution, the function of which is known to varying degrees, and targeting this receptor for clinical treatments without a broad understanding of its function may have adverse consequences. The α9α10-nAChR is expressed in the adrenal and pituitary glands, suggesting a potential role in the stress response, but little is known about its function in this tissue...
April 10, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28408299/ovarian-hormones-modify-anxiety-behavior-and-glucocorticoid-receptors-after-chronic-social-isolation-stress
#10
Dinah L Ramos-Ortolaza, Raura J Doreste-Mendez, John K Alvarado-Torres, Annelyn Torres-Reveron
Chronic social isolation could lead to a disruption in the Hypothalamic-Pituitary-Adrenal (HPA) axis, resulting in anxiety and depressive-like behaviors but cycling estrogens could modify these behaviors. The aim of this study was to determine if changes in ovarian hormones during the normal cycle could interact with social isolation to alter anxiety and depressive-like behaviors. In parallel, we examined the expression of glucocorticoid receptor (GR) and synaptic vesicle protein synaptophysin in the hippocampus and hypothalamus of Sprague Dawley normal cycling female rats...
April 10, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28408298/antidepressant-like-effect-of-valproic-acid-possible-involvement-of-pi3k-akt-mtor-pathway
#11
Isabel Vieira de Assis Lima, Ana Flávia Almeida-Santos, Talita Hélen Ferreira-Vieira, Daniele Cristina Aguiar, Fabíola Mara Ribeiro, Alline Cristina de Campos, Antônio Carlos Pinheiro de Oliveira
RATIONALE: Few studies suggest that antidepressants exert their effects by activating some signaling pathways, including the phosphatidylinositol 3-kinase (PI3K). Moreover, valproic acid (VPA) activates the PI3K pathway. Thus, here we investigated the antidepressant-like effect of VPA and if its effect is related to PI3K/Akt/mTOR activation. METHODS: C57Bl/6 (WT) and PI3Kγ(-/-) mice received VPA injections (30, 100 or 300mg/kg, i.p.) and 30minutes after they were submitted to the forced swimming (FS), tail suspension (TS) and open field (OF) tests...
April 10, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28392321/pharmacological-modulation-of-metabotropic-glutamate-receptor-subtype-5-and-7-impairs-extinction-of-social-fear-in-a-time-point-dependent-manner
#12
David A Slattery, Inga D Neumann, Peter J Flor, Iulia Zoicas
Pharmacological modulation of metabotropic glutamate receptor subtype 5 (mGluR5) and 7 (mGluR7) was shown to attenuate the acquisition and to facilitate the extinction of cued and contextual, non-social, fear. Using the allosteric mGluR5 antagonist 2-methyl-6-(phenylethynyl)-pyridine (MPEP) and the allosteric mGluR7 agonist N,N'-dibenzyhydryl-ethane-1,2-diamine dihydrochloride (AMN082), we aimed to study how pharmacological blockade of mGluR5 and activation of mGluR7 influence acquisition and extinction of social fear in mice...
April 7, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28392323/long-term-beneficial-effect-of-neurotrophic-factors-secreting-mesenchymal-stem-cells-transplantation-in-the-btbr-mouse-model-of-autism
#13
Nisim Perets, Hadar Segal-Gavish, Yael Gothelf, Ran Barzilay, Yael Barhum, Natalie Abramov, Stav Hertz, Darya Morozov, Michael London, Daniel Offen
Autism spectrum disorders (ASD) are neurodevelopmental disabilities characterized by severe impairment in social communication skills and restricted, repetitive behaviors. We have previously shown that a single transplantation of mesenchymal stem cells (MSC) into the cerebral lateral ventricles of BTBR autistic-like mice resulted in an improvement across all diagnostic criteria of ASD. We suggested that brain-derived neurotrophic factor (BDNF), a protein which supports the survival and regeneration of neurons secreted by MSC, largely contributed to the beneficial behavioral effect...
April 6, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28392322/manipulation-of-dopamine-metabolism-contributes-to-attenuating-innate-high-locomotor-activity-in-icr-mice
#14
Takeshi Yamaguchi, Mao Nagasawa, Hiromi Ikeda, Momoko Kodaira, Kimie Minaminaka, Vishwajit S Chowdhury, Shinobu Yasuo, Mitsuhiro Furuse
Attention-deficit hyperactivity disorder (ADHD) is defined as attention deficiency, restlessness and distraction. The main characteristics of ADHD are hyperactivity, impulsiveness and carelessness. There is a possibility that these abnormal behaviors, in particular hyperactivity, are derived from abnormal dopamine (DA) neurotransmission. To elucidate the mechanism of high locomotor activity, the relationship between innate activity levels and brain monoamines and amino acids was investigated in this study. Differences in locomotor activity between ICR, C57BL/6J and CBA/N mice were determined using the open field test...
April 6, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28390877/effects-of-chronic-prenatal-mk-801-treatment-on-object-recognition-cognitive-flexibility-and-drug-induced-locomotor-activity-in-juvenile-and-adult-rat-offspring
#15
S Gallant, L Welch, P Martone, U Shalev
BACKGROUND: Patients with schizophrenia display impaired cognitive functioning and increased sensitivity to psychomimetic drugs. The neurodevelopmental hypothesis of schizophrenia posits that disruption of the developing brain predisposes neural networks to lasting structural and functional abnormalities resulting in the emergence of such symptoms in adulthood. Given the critical role of the glutamatergic system in early brain development, we investigated whether chronic prenatal exposure to the glutamate NMDA receptor antagonist, MK-801, induces schizophrenia-like behavioural and neurochemical changes in juvenile and adult rats...
April 6, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28390879/peripheral-nerve-injury-impairs-the-ability-to-maintain-behavioural-flexibility-following-acute-stress-in-the-rat
#16
David Mor, Michael D Kendig, James W M Kang, Gizem Gemikonakli, Paul J Austin, Eszter Kalman, Laura H Corbit
Chronic neuropathic pain often leads to impaired cognition and reduced behavioural flexibility. This study used a rat model to investigate if a peripheral nerve injury, with or without an additional acute psychological stress, alters behavioural flexibility and goal directed behavior as measured by sensitivity to devaluation. Neuropathic pain was induced by a chronic constriction injury (CCI) of the sciatic nerve. CCI, sham-injury and naïve rats were trained to press two levers for two rewards. In outcome devaluation tests, one of the rewards was devalued by pre-feeding it to satiety, immediately prior to an extinction test measuring responding on the two levers...
April 5, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28390878/protective-effects-of-different-exercise-modalities-in-an-alzheimer-s-disease-like-model
#17
Dilek Özbeyli, Gülce Sarı, Naziye Özkan, Betül Karademir, Meral Yüksel, Özlem Tuğçe Çilingir Kaya, Özgür Kasımay Çakır
Our aim was to investigate the probable protective effects of aerobic, resistance and combined exercise methods on ovariectomy and d-galactose induced Alzheimer's Disease (AD)-like model. d-galactose (100mg/kg) or saline were administered intraperitoneally for 6 weeks to ovariectomized or sham-operated rats (n=8/group). Aerobic (AE), resistance (RE) and combined exercises (CE) (aerobic+resistance) were performed for 3 times a week for 6 weeks. Anxiety level and cognitive functions were evaluated via hole-board and object recognition tests...
April 5, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28390876/time-course-study-of-fractional-anisotropy-in-the-substantia-nigra-of-a-parkinsonian-rat-model-induced-by-6-ohda
#18
Wenzhong Zhang, Li Zhang, Limin Liu, Xiaomin Wang
Diffusion tensor imaging (DTI) is a non-invasive magnetic resonance imaging technique that can be used to assess microstructural changes in a brain disease such as Parkinson's disease (PD). Fractional anisotropy (FA) is a commonly used parameter in DTI analysis, although properties of DTI/FA in analyzing brain modifications in PD have been poorly profiled. This study was thus designed to characterize the detailed time course of FA in the substantia nigra (SN). A rat model of PD was induced by microinfusion of 6-OHDA into the right medial forebrain bundle...
April 5, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28389340/genetic-predisposition-to-obesity-affects-behavioural-traits-including-food-reward-and-anxiety-like-behaviour-in-rats
#19
Heike Vogel, Maria Kraemer, Cristina Rabasa, Kaisa Askevik, Roger A H Adan, Suzanne L Dickson
Here we sought to define behavioural traits linked to anxiety, reward, and exploration in different strains of rats commonly used in obesity research. We hypothesized that genetic variance may contribute not only to their metabolic phenotype (that is well documented) but also to the expression of these behavioural traits. Rat strains that differ in their susceptibility to develop an obese phenotype (Sprague-Dawley, Obese Prone, Obese Resistant, and Zucker rats) were exposed to a number of behavioural tests starting at the age of 8 weeks...
April 5, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28389341/body-part-specific-interactions-of-action-verb-processing-with-motor-behaviour
#20
Anne Klepp, Valentina Niccolai, Jan Sieksmeyer, Stephanie Arnzen, Peter Indefrey, Alfons Schnitzler, Katja Biermann-Ruben
The interaction of action-related language processing with actual movement is an indicator of the functional role of motor cortical involvement in language understanding. This paper describes two experiments using single action verb stimuli. Motor responses were performed with the hand or the foot. To test the double dissociation of language-motor facilitation effects within subjects, Experiments 1 and 2 used a priming procedure where both hand and foot reactions had to be performed in response to different geometrical shapes, which were preceded by action verbs...
April 4, 2017: Behavioural Brain Research
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