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https://www.readbyqxmd.com/read/29352519/nafamostat-mesilate-attenuates-inflammation-and-apoptosis-and-promotes-locomotor-recovery-after-spinal-cord-injury
#1
Hui-Quan Duan, Qiu-Li Wu, Xue Yao, Bao-You Fan, Hong-Yu Shi, Chen-Xi Zhao, Yan Zhang, Bo Li, Chao Sun, Xiao-Hong Kong, Xin-Fu Zhou, Shi-Qing Feng
AIM: Spinal cord injury (SCI) leads to severe neural damage for which there is currently no effective treatment. Exploration of the neuroprotective effect among clinically approved drugs will speed up clinical translation of SCI. Nafamostat mesilate (NM) as a synthetic serine protease inhibitor has been used clinically in pancreatitis treatments. However, its effectiveness in SCI is unknown. The aim of this study was to confirm the efficacy of NM in ameliorating SCI. METHODS: Intraperitoneal administration of NM was performed on a contusion SCI model in Wistar rat...
January 19, 2018: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/29352234/bi-exponential-3d-t1%C3%AF-mapping-of-whole-brain-at-3%C3%A2-t
#2
Rajiv G Menon, Azadeh Sharafi, Johannes Windschuh, Ravinder R Regatte
Detection of multiple relaxation pools using MRI is useful in a number of neuro-pathologies including multiple sclerosis (MS), Alzheimer's, and stroke. In this study we evaluate the feasibility of using T1ρ imaging for the detection of bi-exponential decays in the human brain. A prospective T1ρ imaging study was performed on model relaxation phantoms (eggs) and 7 healthy volunteers. The data was fitted using a single pool and a 2-pool model to estimate mono- and bi-exponential T1ρ maps, respectively. Bi-exponential decays were identified in the gray matter (GM) and white matter (WM) of the brain with 40...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352127/structural-covariance-of-gray-matter-volume-in-hiv-vertically-infected-adolescents
#3
Jielan Li, Lei Gao, Zhi Wen, Jing Zhang, Panying Wang, Ning Tu, Hao Lei, Fuchun Lin, Xi'en Gui, Guangyao Wu
Human immunodeficiency virus (HIV) infection significantly affect neurodevelopmental and behavioral outcomes. We investigated whether alterations of gray matter organization and structural covariance networks with vertical HIV infection adolescents exist, by using the GAT toolbox. MRI data were analysed from 25 HIV vertically infected adolescents and 33 HIV-exposed-uninfected control participants. The gray matter volume (GMV) was calculated, and structural brain networks were reconstructed from gray matter co-variance...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29351881/phonotactic-processing-deficit-following-left-hemisphere-stroke
#4
Maryam Ghaleh, Laura M Skipper-Kallal, Shihui Xing, Elizabeth Lacey, Iain DeWitt, Andrew DeMarco, Peter Turkeltaub
The neural basis of speech processing is still a matter of great debate. Phonotactic knowledge-knowledge of the allowable sound combinations in a language-remains particularly understudied. The purpose of this study was to investigate the brain regions crucial to phonotactic knowledge in left-hemisphere stroke survivors. Results were compared to areas in which gray matter anatomy related to phonotactic knowledge in healthy controls. 44 patients with chronic left-hemisphere stroke, and 32 controls performed an English-likeness rating task on 60 auditory non-words of varying phonotactic regularities...
December 20, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29349864/the-morphometric-co-atrophy-networking-of-schizophrenia-autistic-and-obsessive-spectrum-disorders
#5
Franco Cauda, Andrea Nani, Tommaso Costa, Sara Palermo, Karina Tatu, Jordi Manuello, Sergio Duca, Peter T Fox, Roberto Keller
By means of a novel methodology that can statistically derive patterns of co-alterations distribution from voxel-based morphological data, this study analyzes the patterns of brain alterations of three important psychiatric spectra-that is, schizophrenia spectrum disorder (SCZD), autistic spectrum disorder (ASD), and obsessive-compulsive spectrum disorder (OCSD). Our analysis provides five important results. First, in SCZD, ASD, and OCSD brain alterations do not distribute randomly but, rather, follow network-like patterns of co-alteration...
January 18, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29348019/imaging-dynamic-heart-brain-interactions-getting-to-the-heart-of-the-matter-gray-and-white
#6
EDITORIAL
Y Chandrashekhar, Jagat Narula
No abstract text is available yet for this article.
January 23, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29344979/in-vivo-estimation-of-transverse-relaxation-time-constant-t2-of-17-human-brain-metabolites-at-3t
#7
Patrik O Wyss, Claudio Bianchini, Milan Scheidegger, Ioannis A Giapitzakis, Andreas Hock, Alexander Fuchs, Anke Henning
PURPOSE: The transverse relaxation times T2 of 17 metabolites in vivo at 3T is reported and region specific differences are addressed. METHODS: An echo-time series protocol was applied to one, two, or three volumes of interest with different fraction of white and gray matter including a total number of 106 healthy volunteers and acquiring a total number of 128 spectra. The data were fitted with the 2D fitting tool ProFit2, which included individual line shape modeling for all metabolites and allowed the T2 calculation of 28 moieties of 17 metabolites...
January 17, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29344423/age-related-gray-and-white-matter-changes-in-normal-adult-brains
#8
Farnaz Farokhian, Chunlan Yang, Iman Beheshti, Hiroshi Matsuda, Shuicai Wu
Normal aging is associated with both structural changes in many brain regions and functional declines in several cognitive domains with advancing age. Advanced neuroimaging techniques enable explorative analyses of structural alterations that can be used as assessments of such age-related changes. Here we used voxel-based morphometry (VBM) to investigate regional and global brain volume differences among four groups of healthy adults from the IXI Dataset: older females (OF, mean age 68.35 yrs; n=69), older males (OM, 68...
December 2017: Aging and Disease
https://www.readbyqxmd.com/read/29343751/altered-power-spectral-density-in-the-resting-state-sensorimotor-network-in-patients-with-myotonic-dystrophy-type-1
#9
Jin-Sung Park, Jeehye Seo, Hyunsil Cha, Hui-Jin Song, Sang-Hoon Lee, Kyung Eun Jang, Hui Joong Lee, Juyoung Park, Ho-Won Lee, Yongmin Chang
Myotonic dystrophy type 1 (DM1) is a multisystemic disease that involves the brain with several neurological symptoms. Although there were few imaging studies on DM1, no studies have investigated functional alterations in the sensorimotor network at rest in patients with DM1. In the current study, a power spectral density (PSD) analysis of resting-state fMRI data was performed to assess possible alteration in spontaneous neural activity of the sensorimotor network in patients with DM1. Compared to healthy controls, patients with DM1 showed higher PSD responses in the orbitofrontal cortex, parahippocampus and basal ganglia (corrected P < 0...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29343657/combining-segmented-grey-and-white-matter-images-improves-voxel-based-morphometry-for-the-case-of-dilated-lateral-ventricles
#10
Masami Goto, Osamu Abe, Shigeki Aoki, Koji Kamagata, Masaaki Hori, Tosiaki Miyati, Tsutomu Gomi, Tohoru Takeda
PURPOSE: To evaluate the error in segmented tissue images and to show the usefulness of the brain image in voxel-based morphometry (VBM) using Statistical Parametric Mapping (SPM) 12 software and 3D T1-weighted magnetic resonance images (3D-T1WIs) processed to simulate idiopathic normal pressure hydrocephalus (iNPH). MATERIALS AND METHODS: VBM analysis was performed on sagittal 3D-T1WIs obtained in 22 healthy volunteers using a 1.5T MR scanner. Regions of interest for the lateral ventricles of all subjects were carefully outlined on the original 3D-T1WIs, and two types of simulated 3D-T1WI were also prepared (non-dilated 3D-T1WI as normal control and dilated 3D-T1WI to simulate iNPH)...
January 18, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/29342426/coronary-transfer-during-arterial-switch-the-heart-of-the-matter
#11
EDITORIAL
W Hampton Gray, S Ram Kumar
No abstract text is available yet for this article.
December 26, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29341020/mri-in-the-study-of-animal-models-of-stroke
#12
Pedro Ramos-Cabrer, Daniel Padro
Stroke consists of the loss of cerebral functions resulting from the interruption of blood supply to a region of the brain, and represents the second cause of death and the leading cause of major disability in adults in Europe. Stroke is a very active field of research at preclinical and clinical levels, and Magnetic Resonance Imaging (MRI) is one of the most powerful tools that scientist and clinicians have for the study of the onset, evolution and consequences of this devastating disease, as well as for the monitoring of the success of available treatments, or for the development of novel therapeutic strategies...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29340793/neuroimaging-findings-in-patients-with-medication-overuse-headache
#13
REVIEW
Tzu-Hsien Lai, Shuu-Jiun Wang
Medication overuse headache (MOH) is a secondary headache syndrome defined as the deterioration of the headache associated with the overuse of analgesics. The prevalence of MOH is 1-2% in the general population and even up to 50% in special clinics. Overuse of abortive medications is highly associated with chronic daily headaches and also a known risk factor for headache evolution. Possible mechanisms include neural plasticity changes such as sensitization and defective endogenous pain inhibition. Psychological studies have suggested dependence, even addiction, in patients with MOH...
January 16, 2018: Current Pain and Headache Reports
https://www.readbyqxmd.com/read/29339314/surface-based-characteristics-of-the-cerebellar-cortex-visualized-with-ultra-high-field-mri
#14
Yohan Boillat, Pierre-Louis Bazin, Kieran O'Brien, Mário João Fartaria, Guillaume Bonnier, Gunnar Krueger, Wietske Van der Zwaag, Cristina Granziera
Although having a relatively homogeneous cytoarchitectonic organization, the cerebellar cortex is a heterogeneous region characterized by different amounts of myelin, iron and protein expression profiles. In this study, we used quantitative T1 and T2* mapping at ultra-high field (7T) MRI to investigate the tissue characteristics of the cerebellar gray matter surface and its layers. Detailed subject-specific surfaces were generated at three different cortical depths and averaged across subjects to create averaged T1 and T2* maps on the cerebellar surface...
January 12, 2018: NeuroImage
https://www.readbyqxmd.com/read/29339258/relationship-between-very-early-brain-structure-and-neuromotor-neurological-and-neurobehavioral-function-in-infants-born-31%C3%A2-weeks-gestational-age
#15
Joanne M George, Simona Fiori, Jurgen Fripp, Kerstin Pannek, Andrea Guzzetta, Michael David, Robert S Ware, Stephen E Rose, Paul B Colditz, Roslyn N Boyd
AIM: This study aimed to examine associations between structural MRI and concurrent motor, neurological and neurobehavioral measures at 30-32 weeks postmenstrual age (PMA; 'Early'), and at term equivalent age ('Term'). METHOD: In this prospective cohort study, infants underwent Early MRI (n = 119; 73 male; median 32 weeks 1 day PMA) and Term MRI (n = 102; 61 male; median 40 weeks 4 days PMA) at 3 T. Structural images were scored generating white matter (WM), cortical gray matter, deep gray matter, cerebellar and global brain abnormality scores...
January 13, 2018: Early Human Development
https://www.readbyqxmd.com/read/29338891/gray-and-white-matter-changes-and-their-relation-to-illness-trajectory-in-first-episode-psychosis
#16
Alejandro Keymer-Gausset, Anna Alonso-Solís, Iluminada Corripio, Rosa B Sauras-Quetcuti, Edith Pomarol-Clotet, Erick J Canales-Rodriguez, Eva Grasa-Bello, Enric Álvarez, Maria J Portella
Previous works have studied structural brain characteristics in first-episode psychosis (FEP), but few have focused on the relation between brain differences and illness trajectories. The aim of this study is to analyze gray and white matter changes in FEP patients and their relation with one-year clinical outcomes. A sample of 41 FEP patients and 41 healthy controls (HC), matched by age and educational level was scanned with a 3T MRI during the first month of illness onset. One year later, patients were assigned to two illness trajectories (schizophrenia and non-schizophrenia)...
January 12, 2018: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29335889/comparison-of-gray-matter-volume-between-migraine-and-strict-criteria-tension-type-headache
#17
Wei-Ta Chen, Kun-Hsien Chou, Pei-Lin Lee, Fu-Jung Hsiao, David M Niddam, Kuan-Lin Lai, Jong-Ling Fuh, Ching-Po Lin, Shuu-Jiun Wang
BACKGROUND: Despite evidently distinct symptoms, tension-type headache (TTH) and migraine are highly comorbid and exhibit many similarities in clinical practice. The purpose of this study was to investigate whether both types of headaches are similar in brain morphology. METHODS: Consecutive patients with TTH and age- and sex-matched patients with migraine and healthy controls were enrolled for brain magnetic resonance imaging examination. Patients with TTH were excluded if they reported any headache features or associated symptoms of migraine...
January 15, 2018: Journal of Headache and Pain
https://www.readbyqxmd.com/read/29335880/the-long-term-effect-of-erythropoiesis-stimulating-agents-given-to-preterm-infants-a-proton-magnetic-resonance-spectroscopy-study-on-neurometabolites-in-early-childhood
#18
Charles Gasparovic, Arvind Caprihan, Ronald A Yeo, John Phillips, Jean R Lowe, Richard Campbell, Robin K Ohls
BACKGROUND: Erythropoiesis stimulating agents (ESAs) are neuroprotective in cell and animal models of preterm birth. Prematurity has been shown to alter neurometabolite levels in children in studies using proton magnetic resonance spectroscopy (1H-MRS). OBJECTIVE: We hypothesized that ESA treatment in premature infants would tend to normalize neurometabolites by 4-6 years of age. MATERIALS AND METHODS: Children in a longitudinal study of neurodevelopment underwent MRI and 1H-MRS at approximately 4 years and 6 years of age...
January 15, 2018: Pediatric Radiology
https://www.readbyqxmd.com/read/29332822/constituting-fully-integrated-colorimetric-analysis-system-for-fe-iii-on-multifunctional-nitrogen-doped-moo3-cellulose-paper
#19
Fan Lin, Jiabai Cai, Yuehai Li, Huiwu Yu, Shunxing Li
Using ammonium molybdate and thiourea as precursors, nitrogen-doped MoO3 was produced by a one-step carbonization and then fixed into the cellulose filter paper (NMCP) with acrylic resin as a fixative. NMCP was designed as a multifunctional nanocomposite, i.e., solid phase adsorbent for Fe(III) preconcentration, photocatalyst for iron species transformation and color interference removal, and colorimetric sensor for Fe(III) determination. After photocatalysis, the complex of Fe-humic substances could be transformed into Fe(III) ions, the interference of colored organic matter (e...
April 1, 2018: Talanta
https://www.readbyqxmd.com/read/29331877/cerebral-changes-and-disrupted-gray-matter-cortical-networks-in-asymptomatic-older-adults-at-risk-for-alzheimer-s-disease
#20
Jose L Cantero, Mercedes Atienza, Pascual Sanchez-Juan, Eloy Rodriguez-Rodriguez, Jose Luis Vazquez-Higuera, Ana Pozueta, Andrea Gonzalez-Suarez, Eduard Vilaplana, Jordi Pegueroles, Victor Montal, Rafael Blesa, Daniel Alcolea, Alberto Lleo, Juan Fortea
The diagnostic value of cerebrospinal fluid (CSF) biomarkers is well established in Alzheimer's disease, but our current knowledge about how abnormal CSF levels affect cerebral integrity, at local and network levels, is incomplete in asymptomatic older adults. Here, we have collected CSF samples and performed structural magnetic resonance imaging scans in cognitively normal elderly as part of a cross-sectional multicenter study (SIGNAL project). To identify group differences in cortical thickness, white matter volume, and properties of structural networks, participants were split into controls (N = 20), positive amyloid-β (Aβ1-42+) (N = 19), and positive phosphorylated tau (N = 18)...
December 20, 2017: Neurobiology of Aging
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