keyword
MENU ▼
Read by QxMD icon Read
search

White fibers

keyword
https://www.readbyqxmd.com/read/29676547/morphologic-comparison-of-peripheral-nerves-in-adipocyte-tissue-from-db-db-diabetic-versus-normal-mice
#1
Kyung Ae Lee, Na Young Lee, Tae Sun Park, Heung Yong Jin
Present study investigated the morphologic changes of autonomic nerves in the adipose tissue in diabetic animal model. Male obese type 2 diabetic db/db mice and age matched non-diabetic db/m control mice were used. Epididymal adipose tissue from diabetic db/db mice with that from control heterozygous db/m mice was compared using confocal microscopy-based method to visualize intact whole adipose tissue. Immunohistochemistry with tyrosine hydroxylase for sympathetic (SP), choline acetyltransferase for parasympathetic (PSP), and protein gene product 9...
April 2018: Diabetes & Metabolism Journal
https://www.readbyqxmd.com/read/29675944/advanced-mr-diffusion-imaging-and-chemotherapy-related-changes-in-cerebral-white-matter-microstructure-of-survivors-of-childhood-bone-and-soft-tissue-sarcoma
#2
Charlotte Sleurs, Jurgen Lemiere, Daan Christiaens, Thibo Billiet, Ronald Peeters, Stefan Sunaert, Anne Uyttebroeck, Sabine Deprez
With the increase of survival rates of pediatric cancer patients, the number of children facing potential cognitive sequelae has grown. Previous adult studies suggest that white matter (WM) microstructural changes may contribute to cognitive impairment. This study aims to investigate WM microstructure in childhood bone and soft tissue sarcoma. Differences in (micro-)structure can be investigated using diffusion MRI (dMRI). The typically used diffusion tensor model (DTI) assumes Gaussian diffusion, and lacks information about fiber populations...
April 20, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29675413/influence-of-the-size-and-curvedness-of-neural-projections-on-the-orientationally-averaged-diffusion-mr-signal
#3
Evren Özarslan, Cem Yolcu, Magnus Herberthson, Hans Knutsson, Carl-Fredrik Westin
Neuronal and glial projections can be envisioned to be tubes of infinitesimal diameter as far as diffusion magnetic resonance (MR) measurements via clinical scanners are concerned. Recent experimental studies indicate that the decay of the orientationally-averaged signal in white-matter may be characterized by the power-law, Ē ( q ) ∝ q -1 , where q is the wavenumber determined by the parameters of the pulsed field gradient measurements. One particular study by McKinnon et al . [1] reports a distinctively faster decay in gray-matter...
2018: Frontiers in Physics
https://www.readbyqxmd.com/read/29674416/altered-white-matter-microstructure-in-the-corpus-callosum-and-its-cerebral-interhemispheric-tracts-in-adolescent-idiopathic-scoliosis-diffusion-tensor-imaging-analysis
#4
C Xue, L Shi, S C N Hui, D Wang, T P Lam, C-B Ip, B K W Ng, J C Y Cheng, W C W Chu
BACKGROUND AND PURPOSE: Neural system was one of the important contributors to the etiopathogenesis of adolescent idiopathic scoliosis; additionally, the morphology of corpus callosum interconnecting both hemispheres of the brain was found to be altered morphologically. Our aim was to evaluate and compare the microstructural changes of the corpus callosum and its interhemispheric white matter fiber tracts interconnecting both cerebral hemispheres in patients with adolescent idiopathic scoliosis and matched controls using diffusion tensor imaging...
April 19, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29670573/gait-asymmetry-in-people-with-parkinson-s-disease-is-linked-to-reduced-integrity-of-callosal-sensorimotor-regions
#5
Brett W Fling, Carolin Curtze, Fay B Horak
Background: Individuals with Parkinson's disease (PD) often manifest significant temporal and spatial asymmetries of the lower extremities during gait, which significantly contribute to mobility impairments. While the neural mechanisms underlying mobility asymmetries within this population remain poorly understood, recent evidence points to altered microstructural integrity of white matter fiber tracts within the corpus callosum as potentially playing a substantial role. Objectives: The purpose of this study was to quantify spatial and temporal gait asymmetries as well as transcallosal microstructural integrity of white matter fiber tracts connecting the primary and secondary sensorimotor cortices in people with PD and age-matched control participants...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29666881/pathological-factors-contributing-to-crossed-cerebellar-diaschisis-in-cerebral-gliomas-a-study-combining-perfusion-diffusion-and-structural-mr-imaging
#6
Xiaoxue Liu, Jianrui Li, Qiang Xu, Dante Mantini, Peng Wang, Yuan Xie, Yifei Weng, Chiyuan Ma, Kangjian Sun, Zhiqiang Zhang, Guangming Lu
PURPOSE: To investigate imaging features of crossed cerebellar diaschisis (CCD) in cerebral gliomas, and its underlying pathophysiological mechanisms. METHODS: Thirty-three pre-surgical patients with cerebral gliomas and 33 healthy controls underwent arterial spin-labeling, diffusion tensor imaging, and high-resolution T1-weighted imaging using MRI, in order to estimate cerebral blood flow (CBF), white matter integrity, and lesion volume, respectively. Asymmetry indices of CBF in the cerebellum were used for evaluating the level of CCD in the patients...
April 17, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29663930/diffusion-tensor-imaging-evaluation-of-axonal-white-matter-remodeling-in-a-mouse-model-of-diabetic-stroke-treated-with-novel-p38-mapk-inhibitor-vcp979
#7
Yu Cai, Chunqiang Lu, Tingting Xu, Yuanyuan Ma, Shudan Min, Peter Scammells, Binghui Wang, Shenghong Ju
Type 2 diabetes mellitus (T2DM) is associated with severe axonal/white matter (WM) injury and poor functional outcomes following ischemic stroke. T2DM induces activation of p38 mitogen-activated protein kinases (MAPKs), which may be linked to the axonal/WM damage. In the present study, adult male C57BL/6J mice with streptozotocin (STZ)-induced T2DM mice were subjected to photothrombotic ischemic stroke and treatment with p38 MAPK inhibitors. The novel p38 MAPK inhibitor, VCP979, significantly promoted axonal/WM remodeling, neural progenitor cell migration, and improved functional recovery in T2DM mice...
March 1, 2018: Journal of Biomedical Nanotechnology
https://www.readbyqxmd.com/read/29662272/effect-of-bulk-modulus-on-deformation-of-the-brain-under-rotational-accelerations
#8
S Ganpule, N P Daphalapurkar, M Pirtini Cetingul, K T Ramesh
Traumatic brain injury such as that developed as a consequence of blast is a complex injury with a broad range of symptoms and disabilities. Computational models of brain biomechanics hold promise for illuminating the mechanics of traumatic brain injury (TBI) and for developing preventive devices. However, reliable material parameters are needed for models to be predictive. Unfortunately, the properties of human brain tissue are difficult to measure, and the bulk modulus of brain tissue in particular is not well-characterized...
January 2018: Shock Waves
https://www.readbyqxmd.com/read/29660652/cross-talk-connections-underlying-dorsal-and-ventral-stream-integration-during-hand-actions
#9
Sanja Budisavljevic, Flavio Dell'Acqua, Umberto Castiello
According to the dual-stream theory, the processing of visual information is divided into a ventral pathway mediating object recognition, and a dorsal pathway supporting visuomotor control. Increasing evidence suggests that these streams are not independent, but where this dorsal-ventral stream integration occurs remains unknown. We explored the candidate white matter pathways linking dorsal and ventral visual streams in 30 right-handed participants performing object-oriented hand movements of varying complexity (reaching, grasping and lifting), using advanced diffusion imaging tractography based on the spherical deconvolution and kinematical analysis...
March 9, 2018: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29660551/photogrammetry-of-the-human-brain-a-novel-method-for-3d-the-quantitative-exploration-of-the-structural-connectivity-in-neurosurgery-and-neurosciences
#10
Alessandro De Benedictis, Erica Nocerino, Fabio Menna, Fabio Remondino, Mattia Barbareschi, Umberto Rozzanigo, Francesco Corsini, Emanuele Olivetti, Carlo Efisio Marras, Franco Chioffi, Paolo Avesani, Silvio Sarubbo
BACKGROUND: Anatomical awareness of brain's structural connectivity is mandatory for neurosurgeons, to select the most effective approaches for brain resections. Although standard micro-dissection is a validated technique to investigate the different white matter (WM) pathways and to verify results coming from tractography, the possibility of an interactive exploration of the specimens and of a reliable acquisition of quantitative information has not been described so far. Photogrammetry is a well-established technique allowing an accurate metrology on highly defined 3D-models...
April 13, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29660512/modeling-white-matter-microstructure-with-fiber-ball-imaging
#11
Emilie T McKinnon, Joseph A Helpern, Jens H Jensen
Fiber ball imaging (FBI) provides a means of calculating the fiber orientation density function (fODF) in white matter from diffusion MRI (dMRI) data obtained over a spherical shell with a b-value of about 4000 s/mm2 or higher. By supplementing this FBI-derived fODF with dMRI data acquired for two lower b-value shells, it is shown that several microstructural parameters may be estimated, including the axonal water fraction (AWF) and the intrinsic intra-axonal diffusivity. This fiber ball white matter (FBWM) modeling method is demonstrated for dMRI data acquired from healthy volunteers, and the results are compared with those of the white matter tract integrity (WMTI) method...
April 13, 2018: NeuroImage
https://www.readbyqxmd.com/read/29658455/-efficacy-of-early-treatment-via-fiber-bronchoscope-in-children-with-mycoplasma-pneumoniae-pneumonia-complicated-by-airway-mucus-obstruction
#12
Li-Jie Cao, Jian-Hua Liu, Jin-Feng Shuai, Bo Niu, Su-Kun Lu, Kun-Ling Huang
OBJECTIVE: To study the efficacy of early treatment via fiber bronchoscope in children with Mycoplasma pneumoniae pneumonia (MPP) complicated by airway mucus obstruction. METHODS: According to the time from admission to the treatment via fiber bronchoscope, the children with MPP who were found to have airway mucus obstruction under a fiber bronchoscope were randomly divided into early intervention group (≤3 days; n=40) and late intervention group (>3 days; n=56)...
April 2018: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/29656270/reduced-integrity-of-the-uncinate-fasciculus-and-cingulum-in-depression-a-stem-by-stem-analysis
#13
Kartik D Bhatia, Luke A Henderson, Eugene Hsu, Mark Yim
INTRODUCTION: The subgenual cingulate gyrus (Brodmann's Area 25: BA25) is hypermetabolic in depression and has been targeted successfully with deep brain stimulation. Two of the white matter tracts that play a role in treatment response are the uncinate fasciculus (UF) and the cingulum bundle. The UF has three prefrontal stems, the most medial of which extends from BA25 (which deals with mood regulation) and the most lateral of which extends from the dorso-lateral prefrontal cortex (concerned with executive function)...
April 7, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29653337/investigation-of-microstructural-abnormalities-in-white-and-gray-matter-around-hippocampus-with-diffusion-tensor-imaging-dti-in-temporal-lobe-epilepsy-tle
#14
Yixin Bao, Ruqian He, Qingyi Zeng, Pan Zhu, Rongyuan Zheng, Huiqin Xu
OBJECTIVE: The objective of this study was to apply diffusion tensor imaging (DTI) to investigate microstructural abnormalities in temporal lobe epilepsy (TLE) with and without hippocampal sclerosis (HS). MATERIALS: Totally, 19 patients with TLE with HS and 23 patients with TLE without HS were included. Fiber tracking fibers focused on the parahippocampal cingulum (PHC), cingulate gyrus (CG), and fornix (FORX). Fractional anisotropy (FA) and mean diffusivity (MD) values were obtained, and hippocampal volumes were measured...
April 10, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29652820/diet-quality-and-nutrient-intake-of-urban-overweight-and-obese-primarily-african-american-older-adults-with-osteoarthritis
#15
Sevasti Vergis, Linda Schiffer, Tiffany White, Andrew McLeod, Neda Khudeira, Andrew Demott, Marian Fitzgibbon, Susan Hughes, Lisa Tussing-Humphreys
Diet quality may be a unique target for preventing and managing obesity-related osteoarthritis (OA). Using the Healthy Eating Index-2010 (HEI-2010), this study examined the nutrient intake and diet quality of 400 urban overweight and obese primarily African American older adults with self-reported lower extremity OA. Associations between sociodemographic and health-related factors and diet quality were explored. Participants (mean age 67.8 years, SD 5.9) were included. Habitual dietary intake was assessed using a food frequency questionnaire (FFQ)...
April 13, 2018: Nutrients
https://www.readbyqxmd.com/read/29628441/the-original-social-network-white-matter-and-social-cognition
#16
REVIEW
Yin Wang, Ingrid R Olson
Social neuroscience has traditionally focused on the functionality of gray matter regions, ignoring the critical role played by axonal fiber pathways in supporting complex social processes. In this paper, we argue that research on white matter is essential for understanding a range of topics in social neuroscience, such as face processing, theory of mind, empathy, and imitation, as well as clinical disorders defined by aberrant social behavior, such as prosopagnosia, autism, and schizophrenia. We provide practical advice on how best to carry out these studies, which ultimately will substantially deepen our understanding of the neurobiological basis of social behavior...
April 5, 2018: Trends in Cognitive Sciences
https://www.readbyqxmd.com/read/29625454/white-matter-abnormalities-and-correlation-with-severity-in-normal-tension-glaucoma-a-whole-brain-atlas-based-diffusion-tensor-study
#17
Rong Wang, Zuohua Tang, Xinghuai Sun, Lingjie Wu, Jie Wang, Yufeng Zhong, Zebin Xiao
Purpose: To detect injury of whole brain white matter (WM) in normal tension glaucoma (NTG) patients by using diffusion tensor imaging (DTI) and to analyze the correlations between DTI parameters and glaucoma indices. Methods: Twenty mild, 17 moderate, and 18 severe NTG patients as well as 25 normal subjects were enrolled in this study. Atlas-based diffusion tensor analysis was performed to measure the fractional anisotropy (FA), mean diffusivity (MD), axial diffusivity (AD), and radial diffusivity (RD)...
March 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29624874/biological-and-biomechanical-evaluation-of-autologous-tendon-combined-with-ligament-advanced-reinforcement-system-artificial-ligament-in-a-rabbit-model-of-anterior-cruciate-ligament-reconstruction
#18
Xin-Min Wang, Gang Ji, Xiao-Meng Wang, Hui-Jun Kang, Fei Wang
OBJECTIVE: To compare the biomechanical and histological changes in a rabbit model after reconstructing the anterior cruciate ligament (ACL) with solely autologous tendon and with autologous tendon combined with the ligament advanced reinforcement system (LARS) artificial ligament. METHODS: Anterior cruciate ligament reconstruction was performed in 72 knees from 36 healthy New Zealand white rabbits (bodyweight, 2500-3000 g). The Achilles tendons were harvested bilaterally...
April 6, 2018: Orthopaedic Surgery
https://www.readbyqxmd.com/read/29620913/into-tunnel-repair-versus-onto-surface-repair-for-rotator-cuff-tears-in-a-rabbit-model
#19
Xiaoxi Li, Peng Shen, Wei Su, Song Zhao, Jinzhong Zhao
BACKGROUND: Clinically, onto-surface repair is commonly used for rotator cuff tears. The retear rate after rotator cuff repair (RCR) is relatively high, with failure occurring mostly at the tendon-bone connection site. For anterior cruciate ligament (ACL) reconstruction, into-tunnel reconstruction is commonly employed. The retear rate after ACL reconstruction is relatively low, with retears seldom occurring at the tendon-bone interface. No study on into-tunnel RCR has been conducted. HYPOTHESIS: Into-tunnel RCR could promote fibrocartilage regeneration at the tendon-bone interface and has biomechanical advantage over onto-surface repair in a rabbit rotator cuff tear model...
April 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29620530/genetic-engineered-color-silk-fabrication-of-a-photonics-material-through-a-bioassisted-technology
#20
Katsuhiko Shimizu
Silk produced by the silkworm Bombyx mori is an attractive material because of its luster, smooth and soft texture, conspicuous mechanical strength, good biocompatibility, slow biodegradation, and carbon neutral synthesis. Silkworms have been domesticated and bred for production of better quality and quantity of silk, resulting in the development of sericulture and the textile industry. Silk is generally white, so dyeing is required to obtain colored fiber. However, the dyeing process involves harsh conditions and generates a large volume of waste water, which have environmentally and economically negative impacts...
April 5, 2018: Bioinspiration & Biomimetics
keyword
keyword
72649
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"