keyword
MENU ▼
Read by QxMD icon Read
search

Spatial disorders

keyword
https://www.readbyqxmd.com/read/29679161/present-and-future-of-ultra-high-field-mri-in-neurodegenerative-disorders
#1
REVIEW
Graziella Donatelli, Roberto Ceravolo, Daniela Frosini, Michela Tosetti, Ubaldo Bonuccelli, Mirco Cosottini
PURPOSE OF REVIEW: With a high signal-to-noise ratio, unparalleled spatial resolution, and improved contrasts, ultra-high field MR (≥ 7 T) has great potential in depicting the normal radiological anatomy of smaller structures in the brain and can also provide more information about morphological, quantitative, and metabolic changes associated with a wide range of brain disorders. By focusing attention on specific brain regions believed to be associated with early pathological change, or by more closely inspecting recognized foci of brain pathology, ultra-high field MR can improve the accuracy and sensitivity of neuroimaging...
April 20, 2018: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/29678760/sub-millimeter-ecog-pitch-in-human-enables-higher-fidelity-cognitive-neural-state-estimation
#2
John Hermiz, Nicholas Rogers, Erik Kaestner, Mehran Ganji, Daniel R Cleary, Bob Carter, David Barba, Shadi Dayeh, Eric Halgren, Vikash Gilja
Electrocorticography (ECoG), electrophysiological recording from the pial surface of the brain, is a critical measurement technique for clinical neurophysiology, basic neurophysiology studies, and demonstrates great promise for the development of neural prosthetic devices for assistive applications and the treatment of neurological disorders. Recent advances in device engineering are poised to enable orders of magnitude increase in the resolution of ECoG without comprised measurement quality. This enhancement in cortical sensing enables the observation of neural dynamics from the cortical surface at the micrometer scale...
April 17, 2018: NeuroImage
https://www.readbyqxmd.com/read/29677324/endogenous-attention-improves-perception-in-amblyopic-macaques
#3
Amelie Pham, Marisa Carrasco, Lynne Kiorpes
Amblyopia, a developmental disorder of vision, affects many aspects of spatial vision as well as motion perception and some cognitive skills. Current models of amblyopic vision based on known neurophysiological deficiencies have yet to provide an understanding of the wide range of amblyopic perceptual losses. Visual spatial attention is known to enhance performance in a variety of detection and discrimination tasks in visually typical humans and nonhuman primates. We investigated whether and how voluntary spatial attention affected psychophysical performance in amblyopic macaques...
March 1, 2018: Journal of Vision
https://www.readbyqxmd.com/read/29676484/structural-and-metabolic-brain-correlates-of-apathy-in-huntington-s-disease
#4
Saul Martínez-Horta, Jesús Perez-Perez, Frederic Sampedro, Javier Pagonabarraga, Andrea Horta-Barba, Mar Carceller-Sindreu, Beatriz Gomez-Anson, Gloria Andrea Lozano-Martinez, Diego Alfonso Lopez-Mora, Valle Camacho, Alejandro Fernández-León, Ignasi Carrió, Jaime Kulisevsky
BACKGROUND: Apathy is the most prevalent and characteristic neuropsychiatric feature of Huntington's disease. Congruent with the main early pathological changes, apathy is primarily associated with subcortical damage in frontal-striatal circuits. However, little is known about its precise subserving mechanisms and the contribution of regions other than the basal ganglia. OBJECTIVES: We aimed to define the neural correlates of apathy in Huntington's disease based on gray matter volume and PET/CT of 18 F-fluorodeoxyglucose metabolism...
April 20, 2018: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29675978/measurement-of-large-strain-properties-in-calf-muscles-in-vivo-using-magnetic-resonance-elastography-and-spatial-modulation-of-magnetization
#5
Kristy Tan, Lauriane Jugé, Alice Hatt, Shaokoon Cheng, Lynne E Bilston
It is important to measure the large deformation properties of skeletal muscle in vivo in order to understand and model movement and the force-producing capabilities of muscle. As muscle properties are non-linear, an understanding of how the deformation state affects the measured shear moduli is also useful for clinical applications of magnetic resonance elastography (MRE) to muscle disorders. MRE has so far only been used to measure the linear viscoelastic (small strain) properties of muscles. This study aims to measure the shear moduli of human calf muscles under varying degrees of strain using MRE...
April 19, 2018: NMR in Biomedicine
https://www.readbyqxmd.com/read/29674479/regionally-clustered-abcc8-polymorphisms-in-a-prospective-cohort-predict-cerebral-oedema-and-outcome-in-severe-traumatic-brain-injury
#6
Ruchira Menka Jha, Theresa A Koleck, Ava M Puccio, David O Okonkwo, Seo-Young Park, Benjamin E Zusman, Robert S B Clark, Lori A Shutter, Jessica S Wallisch, Philip E Empey, Patrick M Kochanek, Yvette P Conley
OBJECTIVE: ABCC8 encodes sulfonylurea receptor 1, a key regulatory protein of cerebral oedema in many neurological disorders including traumatic brain injury (TBI). Sulfonylurea-receptor-1 inhibition has been promising in ameliorating cerebral oedema in clinical trials. We evaluated whether ABCC8 tag single-nucleotide polymorphisms predicted oedema and outcome in TBI. METHODS: DNA was extracted from 485 prospectively enrolled patients with severe TBI. 410 were analysed after quality control...
April 19, 2018: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29674241/protective-effect-of-betulinic-acid-against-intracerebroventricular-streptozotocin-induced-cognitive-impairment-and-neuronal-damage-in-rats-possible-neurotransmitters-and-neuroinflammatory-mechanism
#7
Madhu Kaundal, Rahul Deshmukh, Mohd Akhtar
BACKGROUND: The purpose of the study was to explore the therapeutic potential of Betulinic acid (BA) in streptozotocin (STZ) induced memory damage in experimental rats. METHODS: STZ (3 mg/kg bilaterally) as intracerebroventrical (icv) route was administered on day 1 and 3 in rats. Donepezil (5 mg/kg/day po), used as standard, and BA (5, 10 and 15 mg/kg/day po) were administered after 1 h of 1st STZ infusion up to 21 days. Object recognition task (ORT) for non-spatial, Morris water maze (MWM) for spatial and locomotor activity were performed to evaluate behavioral changes in rats...
December 6, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29665429/autophagy-in-mammalian-neurodevelopment-and-implications-for-childhood-neurological-disorders
#8
REVIEW
Derek Marsh, Joanna M Dragich
Here we explore the neurodevelopmental aspects of macroautophagy (henceforth known as autophagy), the process by which cells remove and remodel their structure in a regulated and spatially restricted manner. Autophagy is a catabolic pathway in which cytosolic substances, such as protein complexes, lipids, and organelles, are engulfed by an autophagic vesicle. Degradation occurs once an autophagosome fuses with a lysosome, allowing the macromolecular cargo sequestered within the autophagic vesicle to be recycled...
April 14, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29664902/a-general-prediction-model-for-the-detection-of-adhd-and-autism-using-structural-and-functional-mri
#9
Bhaskar Sen, Neil C Borle, Russell Greiner, Matthew R G Brown
This work presents a novel method for learning a model that can diagnose Attention Deficit Hyperactivity Disorder (ADHD), as well as Autism, using structural texture and functional connectivity features obtained from 3-dimensional structural magnetic resonance imaging (MRI) and 4-dimensional resting-state functional magnetic resonance imaging (fMRI) scans of subjects. We explore a series of three learners: (1) The LeFMS learner first extracts features from the structural MRI images using the texture-based filters produced by a sparse autoencoder...
2018: PloS One
https://www.readbyqxmd.com/read/29663735/the-quantitative-analysis-of-neurodegenerative-disease-classification-noda-constellations-and-multivariate-geometry
#10
Richard A Armstrong
A variety of methods are available for the quantitative description and analysis of neurodegenerative disease. If neurodegenerative disease exists as a series of distinct disorders, then classificatory methods such as hierarchical cluster analysis (HCA) and decision tree analysis (DTA) can be used to classify cases into groups more objectively. If neurodegenerative disease consists of overlapping phenotypes, then the Braun-Blanquet 'nodal' system and 'constellation diagrams' implicitly recognise intermediate cases and reveal their relationships to the main groupings...
2018: Folia Neuropathologica
https://www.readbyqxmd.com/read/29662895/heme-oxygenase-1-activity-as-a-correlate-to-exercise-mediated-amelioration-of-cognitive-decline-and-neuropathological-alterations-in-an-aging-rat-model-of-dementia
#11
Andrea Kurucz, Mariann Bombicz, Rita Kiss, Dániel Priksz, Balázs Varga, Tibor Hortobágyi, György Trencsényi, Renáta Szabó, Anikó Pósa, Rudolf Gesztelyi, Zoltán Szilvássy, Béla Juhász
Alzheimer's disease (AD) is a neurodegenerative disorder with cognitive impairment. Physical exercise has long been proven to be beneficial in the disorder. The present study was designed to examine the effect of voluntary exercise on spatial memory, imaging, and pathological abnormalities. Particular focus has been given to the role of heme oxygenase-1 (HO-1)-an important cellular cytoprotectant in preserving mental acuity-using an aging rat model of dementia. Male and female Wistar rats were segregated into six groups-namely, (i) aged sedentary (control) females (ASF, n = 8); (ii) aged sedentary (control) males (ASM, n = 8); (iii) aged running females (ARF, n = 8); (iv) aged running males (ARM, n = 8); (v) young control females (YCF, n = 8); and (vi) young control males (YCM, n = 8)...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29660410/the-spatial-and-developmental-expression-of-mouse-vwa8-von-willebrand-domain-containing-protein-8
#12
Brian S Grewe, Janet E Richmond, David E Featherstone
The Drosophila gene c12.2 was isolated in a screen examining mRNA binding proteins. Drosophila c12.2 is the mouse Vwa8 homolog. Various genome-wide associated studies have linked human Vwa8 to both neurological and oncological pathologies, which include autism, bipolar disorder, comorbid migraine, and acute myeloid leukemia, however, the function and role of the VWA8 protein remain poorly understood. To further analyze the Vwa8 gene in mouse, gene structure, protein homology modeling, and gene expression patterns were examined throughout mouse development...
April 13, 2018: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/29657307/non-coding-rna-as-novel-players-in-the-pathophysiology-of-schizophrenia
#13
REVIEW
Andrew Gibbons, Madhara Udawela, Brian Dean
Schizophrenia is associated with diverse changes in the brain's transcriptome and proteome. Underlying these changes is the complex dysregulation of gene expression and protein production that varies both spatially across brain regions and temporally with the progression of the illness. The growing body of literature showing changes in non-coding RNA in individuals with schizophrenia offers new insights into the mechanisms causing this dysregulation. A large number of studies have reported that the expression of microRNA (miRNA) is altered in the brains of individuals with schizophrenia...
April 12, 2018: Non-Coding RNA
https://www.readbyqxmd.com/read/29656611/modified-breath-hold-compressed-sensing-3d-mr-cholangiopancreatography-with-a-small-field-of-view-and-high-resolution-acquisition-clinical-feasibility-in-biliary-and-pancreatic-disorders
#14
Liang Zhu, Huadan Xue, Zhaoyong Sun, Tianyi Qian, Elisabeth Weiland, Bernd Kuehn, Patrick Asbach, Bernd Hamm, Zhengyu Jin
BACKGROUND: Compressed-sensing (CS) accelerated 3D MR cholangiopancreatography (MRCP) could be acquired in both navigator-triggered (NT) and breath-hold (BH) mode, but the latter has been considered inferior in depicting pancreatic duct and diagnosing pancreatic duct-related diseases. PURPOSE: To prospectively evaluate the clinical feasibility of a modified 3D BH-CS-MRCP prototype protocol with small field-of-view (FOV) and higher spatial resolution, and to compare its performance to the original BH-CS-MRCP and NT-CS-MRCP...
April 14, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29656107/statistical-testing-and-power-analysis-for-brain-wide-association-study
#15
Weikang Gong, Lin Wan, Wenlian Lu, Liang Ma, Fan Cheng, Wei Cheng, Stefan Grünewald, Jianfeng Feng
The identification of connexel-wise associations, which involves examining functional connectivities between pairwise voxels across the whole brain, is both statistically and computationally challenging. Although such a connexel-wise methodology has recently been adopted by brain-wide association studies (BWAS) to identify connectivity changes in several mental disorders, such as schizophrenia, autism and depression, the multiple correction and power analysis methods designed specifically for connexel-wise analysis are still lacking...
April 5, 2018: Medical Image Analysis
https://www.readbyqxmd.com/read/29655938/delineation-of-early-brain-development-from-fetuses-to-infants-with-diffusion-mri-and-beyond
#16
REVIEW
Minhui Ouyang, Jessica Dubois, Qinlin Yu, Pratik Mukherjee, Hao Huang
Dynamic macrostructural and microstructural changes take place from the mid-fetal stage to 2 years after birth. Delineating brain structural changes during this early developmental period provides new insights into the complicated processes of both typical brain development and the pathological mechanisms underlying various psychiatric and neurological disorders including autism, attention deficit hyperactivity disorder and schizophrenia. Decades of histological studies have identified strong spatial and functional gradients of maturation in human brain gray and white matter...
April 12, 2018: NeuroImage
https://www.readbyqxmd.com/read/29655594/no-effect-of-prenatal-vitamin-d-deficiency-on-autism-relevant-behaviours-in-multiple-inbred-strains-of-mice
#17
M Langguth, M Fassin, S Alexander, K M Turner, T H J Burne
Autism Spectrum Disorders (ASD) is a group of neurodevelopmental disorders commonly characterised by verbal and non-verbal communication deficits, impaired social interaction and repetitive, stereotypic behaviours. The aetiology of ASD is most likely a combination of genetic and environmental factors. Epidemiological evidence suggests that prenatal vitamin D deficiency is associated with an increased incidence of ASD. The overall aim of this study was to investigate prenatal vitamin D deficiency on ASD-related behavioural phenotypes in multiple inbred strains of mice...
April 12, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29651237/dpp6-loss-impacts-hippocampal-synaptic-development-and-induces-behavioral-impairments-in-recognition-learning-and-memory
#18
Lin Lin, Jonathan G Murphy, Rose-Marie Karlsson, Ronald S Petralia, Jakob J Gutzmann, Daniel Abebe, Ya-Xian Wang, Heather A Cameron, Dax A Hoffman
DPP6 is well known as an auxiliary subunit of Kv4-containing, A-type K+ channels which regulate dendritic excitability in hippocampal CA1 pyramidal neurons. We have recently reported, however, a novel role for DPP6 in regulating dendritic filopodia formation and stability, affecting synaptic development and function. These results are notable considering recent clinical findings associating DPP6 with neurodevelopmental and intellectual disorders. Here we assessed the behavioral consequences of DPP6 loss. We found that DPP6 knockout (DPP6-KO) mice are impaired in hippocampus-dependent learning and memory...
2018: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29651235/selective-labeling-of-individual-neurons-in-dense-cultured-networks-with-nanoparticle-enhanced-photoporation
#19
Ranhua Xiong, Peter Verstraelen, Jo Demeester, Andre G Skirtach, Jean-Pierre Timmermans, Stefaan C De Smedt, Winnok H De Vos, Kevin Braeckmans
Neurodevelopmental and neurodegenerative disorders are characterized by subtle alterations in synaptic connections and perturbed neuronal network functionality. A hallmark of neuronal connectivity is the presence of dendritic spines, micron-sized protrusions of the dendritic shaft that compartmentalize single synapses to fine-tune synaptic strength. However, accurate quantification of spine density and morphology in mature neuronal networks is hampered by the lack of targeted labeling strategies. To resolve this, we have optimized a method to deliver cell-impermeable compounds into selected cells based on Spatially resolved NAnoparticle-enhanced Photoporation (SNAP)...
2018: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29650266/increased-sensorimotor-network-connectivity-associated-with-clozapine-eligibility-in-people-with-schizophrenia
#20
Carolyn Beth McNabb, Frederick Sundram, Ian Soosay, Robert R Kydd, Bruce Roy Russell
Schizophrenia is a heterogeneous disorder that exhibits variable responsiveness to treatment between individuals. Here we conducted a resting-state functional magnetic resonance imaging (rs-fMRI) study to determine whether resistance to first-line antipsychotics is reflected in resting-state connectivity. rs-fMRI data were collected from 15 people who had failed to respond to first-line antipsychotics (clozapine-eligible) and 10 first-line treatment responders (FLR). Image pre-processing and analysis were performed using FMRIB's software library (FSL)...
March 6, 2018: Psychiatry research. Neuroimaging
keyword
keyword
20307
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"