keyword
MENU ▼
Read by QxMD icon Read
search

Layer 5 neuron

keyword
https://www.readbyqxmd.com/read/28522735/d3-receptors-regulate-excitability-in-a-unique-class-of-prefrontal-pyramidal-cell
#1
Rebecca L Clarkson, Alayna T Liptak, Steven M Gee, Vikaas S Sohal, Kevin J Bender
The D3 dopamine receptor, a member of the Gi-coupled D2-family of dopamine receptors, is expressed throughout limbic circuits affected in neuropsychiatric disorders, including prefrontal cortex. These receptors are important for prefrontal executive function, as pharmacological and genetic manipulations that affect prefrontal D3 receptors alter anxiety, social interaction, and reversal learning. And yet, the mechanisms by which D3 receptors regulate prefrontal circuits, and whether D3 receptors regulate specific prefrontal subnetworks, remain unknown...
May 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28513543/chronic-exposure-to-uranium-from-gestation-effects-on-behavior-and-neurogenesis-in-adulthood
#2
Céline Dinocourt, Cécile Culeux, Marie Legrand, Christelle Elie, Philippe Lestaevel
Uranium exposure leads to cerebral dysfunction involving for instance biochemical, neurochemical and neurobehavioral effects. Most studies have focused on mechanisms in uranium-exposed adult animals. However, recent data on developing animals have shown that the developing brain is also sensitive to uranium. Models of uranium exposure during brain development highlight the need to improve our understanding of the effects of uranium. In a model in which uranium exposure began from the first day of gestation, we studied the neurobehavioral consequences as well as the progression of hippocampal neurogenesis in animals from dams exposed to uranium...
May 17, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28512198/novel-role-of-rac-mid1-signaling-in-medial-cerebellar-development
#3
Takashi Nakamura, Takehiko Ueyama, Yuzuru Ninoyu, Hirofumi Sakaguchi, Narantsog Choijookhuu, Yoshitaka Hishikawa, Hiroshi Kiyonari, Masaaki Kohta, Mizuho Sakahara, Ivan de Curtis, Eiji Kohmura, Yasuo Hisa, Atsu Aiba, Naoaki Saito
Rac signaling impacts a relatively large number of downstream targets; however, few studies have established an association between Rac pathways and pathological conditions. In the present study, we generated mice with double knockout of Rac1 and Rac3 (Atoh1-Cre;Rac1(flox/flox);Rac3(-/-) ) in cerebellar granule neurons (CGNs). We observed impaired tangential migration at E16.5, as well as numerous apoptotic CGNs at the deepest layer of the external granule layer (EGL) in the medial cerebellum of Atoh1-Cre;Rac1(flox/flox);Rac3(-/-) mice at P8...
May 15, 2017: Development
https://www.readbyqxmd.com/read/28505333/multiregional-age-associated-reduction-of-brain-neuronal-reserve-without-association-with-neurofibrillary-degeneration-or-%C3%AE-amyloidosis
#4
Jerzy Wegiel, Michael Flory, Izabela Kuchna, Krzysztof Nowicki, Shuang Yong Ma, Jarek Wegiel, Eulalia Badmaev, Wayne P Silverman, Mony de Leon, Barry Reisberg, Thomas Wisniewski
Increase in human life expectancy has resulted in the rapid growth of the elderly population with minimal or no intellectual deterioration. The aim of this stereological study of 10 structures and 5 subdivisions with and without neurofibrillary degeneration in the brains of 28 individuals 25-102-years-old was to establish the pattern of age-associated neurodegeneration and neuronal loss in the brains of nondemented adults and elderly. The study revealed the absence of significant neuronal loss in 7 regions and topographically selective reduction of neuronal reserve over 77 years in 8 brain structures including the entorhinal cortex (EC) (-33...
June 1, 2017: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/28505229/oligodendrocyte-and-neuron-specific-nogo-a-restrict-dendritic-branching-and-spine-density-in-the-adult-mouse-motor-cortex
#5
Ajmal Zemmar, Chia-Chien Chen, Oliver Weinmann, Brigitt Kast, Flora Vajda, James Bozeman, Noel Isaad, Yi Zuo, Martin E Schwab
Nogo-A has been well described as a myelin-associated inhibitor of neurite outgrowth and functional neuroregeneration after central nervous system (CNS) injury. Recently, a new role of Nogo-A has been identified as a negative regulator of synaptic plasticity in the uninjured adult CNS. Nogo-A is present in neurons and oligodendrocytes. However, it is yet unclear which of these two pools regulate synaptic plasticity. To address this question we used newly generated mouse lines in which Nogo-A is specifically knocked out in (1) oligodendrocytes (oligoNogo-A KO) or (2) neurons (neuroNogo-A KO)...
May 15, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28504949/cascaded-subpatch-networks-for-effective-cnns
#6
Xiaoheng Jiang, Yanwei Pang, Manli Sun, Xuelong Li
Conventional convolutional neural networks use either a linear or a nonlinear filter to extract features from an image patch (region) of spatial size Hx W (typically, H is small and is equal to W, e.g., H is 5 or 7 ). Generally, the size of the filter is equal to the size Hx W of the input patch. We argue that the representational ability of equal-size strategy is not strong enough. To overcome the drawback, we propose to use subpatch filter whose spatial size hx w is smaller than Hx W . The proposed subpatch filter consists of two subsequent filters...
May 12, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28493345/il-10-expression-in-pyramidal-neurons-after-neuropathogenic-coronaviral-infection
#7
Masatoshi Kakizaki, Rihito Watanabe
The apoptosis of pyramidal neurons in CA2 and CA3 subregions of the hippocampus is induced after infection with Mu-3 virus (Mu-3), a neuropathogenic strain of the JHM virus (JHMV), at 4-5 days post-inoculation (dpi). The viral antigens in the hippocampus are mainly found in the CD11b-positive cells distributed in the stratum oriens located outside the pyramidal layer, and only a few pyramidal neurons are infected. Furthermore, the apoptotic cells, indicated as showing caspase 3 (Cas3) activation, consist of a high number of uninfected cells...
May 11, 2017: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/28486224/long-term-neuropathological-changes-associated-with-cerebral-palsy-in-a-nonhuman-primate-model-of-hypoxic-ischemic-encephalopathy
#8
Ryan M McAdams, Bobbi Fleiss, Christopher Traudt, Leslie Schwendimann, Jessica M Snyder, Robin L Haynes, Niranjana Natarajan, Pierre Gressens, Sandra E Juul
BACKGROUND: Cerebral palsy (CP) is the most common motor disability in childhood, with a worldwide prevalence of 1.5-4/1,000 live births. Hypoxic-ischemic encephalopathy (HIE) contributes to the burden of CP, but the long-term neuropathological findings of this association remain limited. METHODOLOGY: Thirty-four term Macaca nemestrina macaques were included in this long-term neuropathological study: 9 control animals delivered by cesarean section and 25 animals with perinatal asphyxia delivered by cesarean section after 15-18 min of umbilical cord occlusion (UCO)...
May 10, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/28476208/transcriptome-alterations-in-prefrontal-pyramidal-cells-distinguish-schizophrenia-from-bipolar-and-major-depressive-disorders
#9
Dominique Arion, Zhiguang Huo, John F Enwright, John P Corradi, George Tseng, David A Lewis
BACKGROUND: Impairments in certain cognitive processes (e.g., working memory) are typically most pronounced in schizophrenia (SZ), intermediate in bipolar disorder, and least in major depressive disorder. Given that working memory depends, in part, on neural circuitry that includes pyramidal cells in layer 3 (L3) and layer 5 (L5) of the dorsolateral prefrontal cortex (DLPFC), we sought to determine if transcriptome alterations in these neurons were shared or distinctive for each diagnosis...
April 4, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28473758/corrigendum-bidirectional-hebbian-plasticity-induced-by-low-frequency-stimulation-in-basal-dendrites-of-rat-barrel-cortex-layer-5-pyramidal-neurons
#10
Andrea Díez-García, Natali Barros-Zulaica, Ángel Núñez, Washington Buño, David Fernández de Sevilla
[This corrects the article on p. 8 in vol. 11, PMID: 28203145.].
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28472659/conditional-deletion-of-all-neurexins-defines-diversity-of-essential-synaptic-organizer-functions-for-neurexins
#11
Lulu Y Chen, Man Jiang, Bo Zhang, Ozgun Gokce, Thomas C Südhof
Neurexins are recognized as key organizers of synapses that are essential for normal brain function. However, it is unclear whether neurexins are fundamental building blocks of all synapses with similar overall functions or context-dependent specifiers of synapse properties. To address this question, we produced triple cKO (conditional knockout) mice that allow ablating all neurexin expression in mice. Using neuron-specific manipulations combined with immunocytochemistry, paired recordings, and two-photon Ca(2+) imaging, we analyzed excitatory synapses formed by climbing fibers on Purkinje cells in cerebellum and inhibitory synapses formed by parvalbumin- or somatostatin-positive interneurons on pyramidal layer 5 neurons in the medial prefrontal cortex...
May 3, 2017: Neuron
https://www.readbyqxmd.com/read/28469560/hcn-channel-modulation-of-synaptic-integration-in-gabaergic-interneurons-in-malformed-rat-neocortex
#12
Asher J Albertson, Andrew S Bohannon, John J Hablitz
Cortical malformations are often associated with pharmaco-resistant epilepsy. Alterations in hyperpolarization-activated, cyclic nucleotide-gated, non-specific cation (HCN) channels have been shown to contribute to malformation associated hyperexcitability. We have recently demonstrated that expression of HCN channels and Ih current amplitudes are reduced in layer (L) 5 pyramidal neurons of rats with freeze lesion induced malformations. These changes were associated with an increased EPSP temporal summation...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28460564/effect-of-tpmpa-gabac-receptor-antagonist-on-neuronal-response-properties-in-rat-barrel-cortex
#13
Elham Mohammadi, Ali Shamsizadeh, Elham Salari, Iman Fatemi, Mohammad Allahtavakoli, Ali Roohbakhsh
GABAC receptors are ligand-gated chloride channels and have important roles in some neurological functions like vision. Recent investigations demonstrated that these receptors are also expressed in the somatosensory cortex. In this study, we investigated the effect of (1,2,5,6-tetrahydropyridin-4-yl)methylphosphinic acid (TPMPA) (GABAC receptor antagonist) on the properties of the neuronal response to natural stimuli (whisker deflection) in deep layers of rat barrel cortex. Twenty-eight male Wistar rats, weighing 230-260 g, were used in this study...
May 1, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28453662/mglur5-tunes-ngf-trka-signaling-to-orient-spiny-stellate-neuron-dendrites-toward-thalamocortical-axons-during-whisker-barrel-map-formation
#14
Jui-Yen Huang, Hui-Chen Lu
Neurons receive and integrate synaptic inputs at their dendrites, thus dendritic patterning shapes neural connectivity and behavior. Aberrant dendritogenesis is present in neurodevelopmental disorders such as Down's syndrome and autism. Abnormal glutamatergic signaling has been observed in these diseases, as has dysfunction of the metabotropic glutamate receptor 5 (mGluR5). Deleting mGluR5 in cortical glutamatergic neurons disrupted their coordinated dendritic outgrowth toward thalamocortical axons and perturbed somatosensory circuits...
April 27, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28449038/real-time-imaging-of-single-neuronal-cell-apoptosis-in-patients-with-glaucoma
#15
Maria F Cordeiro, Eduardo M Normando, M Jorge Cardoso, Serge Miodragovic, Seham Jeylani, Benjamin M Davis, Li Guo, Sebastien Ourselin, Roger A'Hern, Philip A Bloom
Retinal cell apoptosis occurs in many ocular neurodegenerative conditions including glaucoma-the major cause of irreversible blindness worldwide. Using a new imaging technique that we have called DARC (detection of apoptosing retinal cells), which until now has only been demonstrated in animal models, we assessed if annexin 5 labelled with fluorescent dye DY-776 (ANX776) could be used safely in humans to identify retinal cell apoptosis. Eight patients with glaucomatous neurodegeneration and evidence of progressive disease, and eight healthy subjects were randomly assigned to intravenous ANX776 doses of 0...
April 26, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28443003/complementary-modular-microcircuits-of-the-rat-medial-entorhinal-cortex
#16
Saikat Ray, Andrea Burgalossi, Michael Brecht, Robert K Naumann
The parahippocampal region is organized into different areas, with the medial entorhinal cortex (MEC), presubiculum and parasubiculum prominent in spatial memory. Here, we also describe a region at the extremity of the MEC and bordering the subicular complex, the medial-most part of the entorhinal cortex. While the subdivisions of hippocampus proper form more or less continuous cell sheets, the superficial layers of the parahippocampal region have a distinct modular architecture. We investigate the spatial distribution, laminar position, and putative connectivity of zinc-positive modules in layer 2 of the MEC of rats and relate them to the calbindin-positive patches previously described in the entorhinal cortex...
2017: Frontiers in Systems Neuroscience
https://www.readbyqxmd.com/read/28439229/locomotion-related-population-cortical-ca-2-transients-in-freely-behaving-mice
#17
Quanchao Zhang, Jiwei Yao, Yu Guang, Shanshan Liang, Jiangheng Guan, Han Qin, Xiang Liao, Wenjun Jin, Jianxiong Zhang, Junxia Pan, Hongbo Jia, Junan Yan, Zhengzhi Feng, Weibing Li, Xiaowei Chen
Locomotion involves complex neural activity throughout different cortical and subcortical networks. The primary motor cortex (M1) receives a variety of projections from different brain regions and is responsible for executing movements. The primary visual cortex (V1) receives external visual stimuli and plays an important role in guiding locomotion. Understanding how exactly the M1 and the V1 are involved in locomotion requires recording the neural activities in these areas in freely moving animals. Here, we used an optical fiber-based method for the real-time monitoring of neuronal population activities in freely moving mice...
2017: Frontiers in Neural Circuits
https://www.readbyqxmd.com/read/28434006/unbiased-quantification-of-subplate-neuron-loss-following-neonatal-hypoxia-ischemia-in-a-rat-model
#18
Alexandra Mikhailova, Naveena Sunkara, Patrick S McQuillen
BACKGROUND: Cellular targets of neonatal hypoxia-ischemia (HI) include both oligodendrocyte and neuronal lineages with differences in the patterns of vulnerable cells depending upon the developmental stage at which the injury occurs. Injury to the developing white matter is a characteristic feature of human preterm brain injury. Data are accumulating, however, for neuronal injury in the developing cerebral cortex. In the most widely used rodent model of preterm HI brain injury, conflicting data have been reported regarding the sensitivity of subplate neurons to early neonatal HI, with some reports of selective vulnerability and others that find no increased loss of subplate neurons in comparison with other cortical layers...
April 22, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/28433420/dna-methylation-program-in-normal-and-alcohol-induced-thinning-cortex
#19
Nail Can Öztürk, Marisol Resendiz, Hakan Öztürk, Feng C Zhou
While cerebral underdevelopment is a hallmark of fetal alcohol spectrum disorders (FASD), the mechanism(s) guiding the broad cortical neurodevelopmental deficits are not clear. DNA methylation is known to regulate early development and tissue specification through gene regulation. Here, we examined DNA methylation in the onset of alcohol-induced cortical thinning in a mouse model of FASD. C57BL/6 (B6) mice were administered a 4% alcohol (v/v) liquid diet from embryonic (E) days 7-16, and their embryos were harvested at E17, along with isocaloric liquid diet and lab chow controls...
May 2017: Alcohol
https://www.readbyqxmd.com/read/28432140/visually-evoked-3-5-hz-membrane-potential-oscillations-reduce-the-responsiveness-of-visual-cortex-neurons-in-awake-behaving-mice
#20
Michael C Einstein, Pierre-Olivier Polack, Duy T Tran, Peyman Golshani
Low frequency membrane potential (Vm) oscillations were once thought to only occur in sleeping and anesthetized states. Recently, low frequency Vm oscillations have been described in inactive awake animals, but it is unclear if they shape sensory processing in neurons and whether they occur during active awake behavioral states. To answer these questions, we performed two-photon guided whole-cell Vm recordings from primary visual cortex layer 2/3 excitatory and inhibitory neurons in awake mice during passive visual stimulation and performance of visual and auditory discrimination tasks...
April 21, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
keyword
keyword
27908
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"