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BMC Neuroscience

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https://www.readbyqxmd.com/read/28193169/eeg-correlates-of-working-memory-performance-in-females
#1
Yuri G Pavlov, Boris Kotchoubey
BACKGROUND: The study investigates oscillatory brain activity during working memory (WM) tasks. The tasks employed varied in two dimensions. First, they differed in complexity from average to highly demanding. Second, we used two types of tasks, which required either only retention of stimulus set or retention and manipulation of the content. We expected to reveal EEG correlates of temporary storage and central executive components of WM and to assess their contribution to individual differences...
February 13, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28178946/quantitative-analysis-of-axon-collaterals-of-single-pyramidal-cells-of-the-anterior-piriform-cortex-of-the-guinea-pig
#2
Junli Yang, Gerhard Litscher, Zhongren Sun, Qiang Tang, Kiyoshi Kishi, Satoko Oda, Masaaki Takayanagi, Zemin Sheng, Yang Liu, Wenhai Guo, Ting Zhang, Lu Wang, Ingrid Gaischek, Daniela Litscher, Irmgard Th Lippe, Masaru Kuroda
BACKGROUND: The role of the piriform cortex (PC) in olfactory information processing remains largely unknown. The anterior part of the piriform cortex (APC) has been the focus of cortical-level studies of olfactory coding, and associative processes have attracted considerable attention as an important part in odor discrimination and olfactory information processing. Associational connections of pyramidal cells in the guinea pig APC were studied by direct visualization of axons stained and quantitatively analyzed by intracellular biocytin injection in vivo...
February 8, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28173758/sleep-wake-movement-velocities-trajectories-and-micro-arousals-during-maturation-in-rats
#3
Gideon Gradwohl, Nadja Olini, Reto Huber
BACKGROUND: Sleep is regulated by two main processes. The circadian process provides a 24-h rhythm and the homeostatic process reflects sleep pressure, which increases in the course of wakefulness and decreases during sleep. Both of these processes undergo major changes during development. For example, sleep homeostasis, measured by means of electroencephalogram (EEG) slow-wave activity (SWA, EEG power between 0.5 and 4.5 Hz), peaks around puberty and decreases during adolescence. In humans and rats these changes have been related to cortical maturation...
February 7, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28143405/early-start-of-progressive-motor-deficits-in-line-61-%C3%AE-synuclein-transgenic-mice
#4
R Rabl, C Breitschaedel, S Flunkert, S Duller, D Amschl, J Neddens, V Niederkofler, E Rockenstein, E Masliah, H Roemer, B Hutter-Paier
BACKGROUND: Synucleinopathies such as Parkinson's disease or multiple system atrophy are characterized by Lewy bodies in distinct brain areas. These aggregates are mainly formed by α-synuclein inclusions, a protein crucial for synaptic functions in the healthy brain. Transgenic animal models of synucleinopathies are frequently based on over-expression of human wild type or mutated α-synuclein under the regulatory control of different promoters. A promising model is the Line 61 α-synuclein transgenic mouse that expresses the transgene under control of the Thy-1 promoter...
January 31, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28143398/a-noninvasive-optical-approach-for-assessing-chloride-extrusion-activity-of-the-k-cl-cotransporter-kcc2-in-neuronal-cells
#5
Anastasia Ludwig, Claudio Rivera, Pavel Uvarov
BACKGROUND: Cation-chloride cotransporters (CCCs) are indispensable for maintaining chloride homeostasis in multiple cell types, but K-Cl cotransporter KCC2 is the only CCC member with an exclusively neuronal expression in mammals. KCC2 is critical for rendering fast hyperpolarizing responses of ionotropic γ-aminobutyric acid and glycine receptors in adult neurons, for neuronal migration in the developing central nervous system, and for the formation and maintenance of small dendritic protrusions-dendritic spines...
January 31, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28122516/tdp-43-protein-variants-as-biomarkers-in-amyotrophic-lateral-sclerosis
#6
Stephanie M Williams, Galam Khan, Brent T Harris, John Ravits, Michael R Sierks
BACKGROUND: TDP-43 aggregates accumulate in individuals affected by amyotrophic lateral sclerosis (ALS) and other neurodegenerative diseases, representing potential diagnostic and therapeutic targets. Using an atomic force microscopy based biopanning protocol developed in our lab, we previously isolated 23 TDP-43 reactive antibody fragments with preference for human ALS brain tissue relative to frontotemporal dementia, a related neurodegeneration, and healthy samples from phage-displayed single chain antibody fragment (scFv) libraries...
January 25, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28122495/evoked-potentials-and-behavioral-performance-during-different-states-of-brain-arousal
#7
Jue Huang, Tilman Hensch, Christine Ulke, Christian Sander, Janek Spada, Philippe Jawinski, Ulrich Hegerl
BACKGROUND: Previous studies compared evoked potentials (EPs) between several sleep stages but only one uniform wake state. However, using electroencephalography (EEG), several arousal states can be distinguished before sleep onset. Recently, the Vigilance Algorithm Leipzig (VIGALL 2.0) has been developed, which automatically attributes one out of seven EEG-vigilance stages to each 1-s EEG segment, ranging from stage 0 (associated with cognitively active wakefulness), to stages A1, A2 and A3 (associated with relaxed wakefulness), to stages B1 and B2/3 (associated with drowsiness) up to stage C (indicating sleep onset)...
January 25, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28114887/the-effect-of-omega-3-fatty-acids-on-central-nervous-system-remyelination-in-fat-1-mice
#8
Elise Siegert, Friedemann Paul, Michael Rothe, Karsten H Weylandt
BACKGROUND: There is a large body of experimental evidence suggesting that omega-3 (n-3) polyunsaturated fatty acids (PUFAs) are capable of modulating immune function. Some studies have shown that these PUFAs might have a beneficial effect in patients suffering form multiple sclerosis (MS), a chronic inflammatory demyelinating disease of the central nervous system (CNS). This could be due to increased n-3 PUFA-derived anti-inflammatory lipid mediators. In the present study we tested the effect of an endogenously increased n-3 PUFA status on cuprizone-induced CNS demyelination and remyelination in fat-1 mice versus their wild-type (wt) littermates...
January 24, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28114908/erratum-to-a-mitochondrial-division-inhibitor-mdivi-1-inhibits-mitochondrial-fragmentation-and-attenuates-kainic-acid-induced-hippocampal-cell-death
#9
Hwajin Kim, Jong Youl Lee, Keon Jae Park, Won-Ho Kim, Gu Seob Roh
No abstract text is available yet for this article.
January 23, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28114906/erratum-to-high-fat-diet-induced-obesity-exacerbates-kainic-acid-induced-hippocampal-cell-death
#10
Dong Ho Kang, Rok Won Heo, Chin-Ok Yi, Hwajin Kim, Chang Hwa Choi, Gu Seob Roh
No abstract text is available yet for this article.
January 23, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28114886/application-of-hairless-mouse-strain-to-bioluminescence-imaging-of-arc-expression-in-mouse-brain
#11
Hironori Izumi, Tetsuya Ishimoto, Hiroshi Yamamoto, Hisashi Mori
BACKGROUND: Bioluminescence imaging (BLI) is a powerful technique for monitoring the temporal and spatial dynamics of gene expression in the mouse brain. However, the black fur, skin pigmentation and hair regrowth after depilation of mouse interfere with BLI during developmental and daily examination. The aim of this study was to extend the application of Arc-Luc transgenic (Tg) mice to the BLI of neuronal activity in the mouse brain by introducing the hairless (HL) gene and to examine Arc-Luc expression at various developmental stages without interference from black fur, skin pigmentation, and hair regrowth...
January 23, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28103798/selenium-suppresses-glutamate-induced-cell-death-and-prevents-mitochondrial-morphological-dynamic-alterations-in-hippocampal-ht22-neuronal-cells
#12
Yan-Mei Ma, Gordon Ibeanu, Li-Yao Wang, Jian-Zhong Zhang, Yue Chang, Jian-Da Dong, P Andy Li, Li Jing
BACKGROUND: Previous studies have indicated that selenium supplementation may be beneficial in neuroprotection against glutamate-induced cell damage, in which mitochondrial dysfunction is considered a major pathogenic feature. However, the exact mechanisms by which selenium protects against glutamate-provoked mitochondrial perturbation remain ambiguous. In this study glutamate exposed murine hippocampal neuronal HT22 cell was used as a model to investigate the underlying mechanisms of selenium-dependent protection against mitochondria damage...
January 19, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28095779/poly-adp-ribose-polymerase-inhibitors-activate-the-p53-signaling-pathway-in-neural-stem-progenitor-cells
#13
Akiko Okuda, Suguru Kurokawa, Masanori Takehashi, Aika Maeda, Katsuya Fukuda, Yukari Kubo, Hyuma Nogusa, Tomoka Takatani-Nakase, Shujiro Okuda, Kunihiro Ueda, Seigo Tanaka
BACKGROUND: Poly(ADP-ribose) polymerase 1 (PARP-1), which catalyzes poly(ADP-ribosyl)ation of proteins by using NAD(+) as a substrate, plays a key role in several nuclear events, including DNA repair, replication, and transcription. Recently, PARP-1 was reported to participate in the somatic cell reprogramming process. Previously, we revealed a role for PARP-1 in the induction of neural apoptosis in a cellular model of cerebral ischemia and suggested the possible use of PARP inhibitors as a new therapeutic intervention...
January 17, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28086802/brain-metabolic-pattern-analysis-using-a-magnetic-resonance-spectra-classification-software-in-experimental-stroke
#14
Elena Jiménez-Xarrié, Myriam Davila, Ana Paula Candiota, Raquel Delgado-Mederos, Sandra Ortega-Martorell, Margarida Julià-Sapé, Carles Arús, Joan Martí-Fàbregas
BACKGROUND: Magnetic resonance spectroscopy (MRS) provides non-invasive information about the metabolic pattern of the brain parenchyma in vivo. The SpectraClassifier software performs MRS pattern-recognition by determining the spectral features (metabolites) which can be used objectively to classify spectra. Our aim was to develop an Infarct Evolution Classifier and a Brain Regions Classifier in a rat model of focal ischemic stroke using SpectraClassifier. RESULTS: A total of 164 single-voxel proton spectra obtained with a 7 Tesla magnet at an echo time of 12 ms from non-infarcted parenchyma, subventricular zones and infarcted parenchyma were analyzed with SpectraClassifier ( http://gabrmn...
January 13, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28081713/genistein-protects-against-a%C3%AE-25-35-induced-apoptosis-of-pc12-cells-through-jnk-signaling-and-modulation-of-bcl-2-family-messengers
#15
Fuling You, Qiao Li, Guifang Jin, Yaojie Zheng, Jingrong Chen, Hong Yang
BACKGROUND: Deposition of aggregated amyloid beta (Aβ) protein is hallmark of Alzheimer's disease, leading to dysfunction and apoptosis of neurons. The isoflavone phytoestrogen compound genistein (Gen) exerts a significant protective effect against Aβ25-35 induced neurotoxicity and mitochondrial damage in rat pheochromocytoma (PC12) cells. However, the mechanisms underlying Gen's rescue remain elusive. Therefore we endeavored to research further the molecular mechanisms underlying Gen's inhibition of Aβ25-35 induced apoptosis of neurons...
January 12, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28061814/cx3c-chemokine-receptor-1-deficiency-modulates-microglia-morphology-but-does-not-affect-lesion-size-and-short-term-deficits-after-experimental-stroke
#16
Gerlinde van der Maten, Vivien Henck, Tadeusz Wieloch, Karsten Ruscher
BACKGROUND: The fractalkine/CX3C chemokine receptor 1 (CX3CR1) pathway has been identified to play an essential role in the chemotaxis of microglia, leukocyte trafficking and microglia/macrophage recruitment. It has also been shown to be important in the regulation of the inflammatory response in the early phase after experimental stroke. The present study was performed to investigate if CX3CR1 deficiency affects microglia during the first 14 days with consequences for tissue damage after experimental stroke...
January 6, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28056817/proteomic-analyses-of-limbic-regions-in-neonatal-male-female-and-androgen-receptor-knockout-mice
#17
Anna Zettergren, Sara Karlsson, Erik Studer, Anna Sarvimäki, Petronella Kettunen, Annika Thorsell, Carina Sihlbom, Lars Westberg
BACKGROUND: It is well-established that organizational effects of sex steroids during early development are fundamental for sex-typical displays of, for example, mating and aggressive behaviors in rodents and other species. Male and female brains are known to differ with respect to neuronal morphology in particular regions of the brain, including the number and size of neurons, and the density and length of dendrites in nuclei of hypothalamus and amygdala. The aim of the present study was to use global proteomics to identify proteins differentially expressed in hypothalamus/amygdala during early development (postnatal day 8) of male, female and conditional androgen receptor knockout (AR(NesDel)) male mice, lacking androgen receptors specifically in the brain...
January 5, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28056813/hemodynamic-effects-of-intraoperative-anesthetics-administration-in-photothrombotic-stroke-model-a-study-using-laser-speckle-imaging
#18
Hongyang Lu, Yao Li, Bin Bo, Lu Yuan, Xiaodan Lu, Hangdao Li, Shanbao Tong
BACKGROUND: Previous neuroimaging studies have shown the hemodynamic effect of either preconditioning or postconditioning anesthesia in ischemic stroke model. However, the anesthetic effect in hemodynamics during and immediately after the stroke modeling surgery remains unknown due to the lack of appropriate anesthesia-free stroke model and intraoperative imaging technology. In the present study, we utilized our recently developed photothrombotic model of focal cerebral ischemia in conscious and freely moving rats, and investigated transient hemodynamic changes with or without isoflurane administration...
January 5, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28056806/suppression-of-experimental-autoimmune-encephalomyelitis-by-ultraviolet-light-is-not-mediated-by-isomerization-of-urocanic-acid
#19
Amy A Irving, Steven J Marling, Lori A Plum, Hector F DeLuca
BACKGROUND: Ultraviolet B irradiation confers strong resistance against experimental autoimmune encephalomyelitis, a model of multiple sclerosis. This protection by ultraviolet B is independent of vitamin D production but causes isomerization of urocanic acid, a naturally occurring immunosuppressant. METHODS: To determine whether UCA isomerization from trans to cis is responsible for the protection against experimental autoimmune encephalomyelitis afforded by ultraviolet B, trans- or cis-urocanic acid was administered to animals and their disease progression was monitored...
January 5, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28056790/immunization-with-neural-derived-peptides-plus-scar-removal-induces-a-permissive-microenvironment-and-improves-locomotor-recovery-after-chronic-spinal-cord-injury
#20
Roxana Rodríguez-Barrera, Adrián Flores-Romero, Ana María Fernández-Presas, Elisa García-Vences, Raúl Silva-García, Mina Konigsberg, Liliana Blancas-Espinoza, Vinnitsa Buzoianu-Anguiano, Karla Soria-Zavala, Paola Suárez-Meade, Antonio Ibarra
BACKGROUND: Immunization with neural derived peptides (INDP) as well as scar removal-separately-have shown to induce morphological and functional improvement after spinal cord injury (SCI). In the present study, we compared the effect of INDP alone versus INDP with scar removal on motor recovery, regeneration-associated and cytokine gene expression, and axonal regeneration after chronic SCI. Scar removal was conducted through a single incision with a double-bladed scalpel along the stump, and scar renewal was halted by adding α,α'-dipyridyl...
January 5, 2017: BMC Neuroscience
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