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https://www.readbyqxmd.com/read/29216635/deficits-in-docosahexaenoic-acid-accrual-during-adolescence-reduce-rat-forebrain-white-matter-microstructural-integrity-an-in-vivo-diffusion-tensor-imaging-study
#1
Robert K McNamara, Jennifer D Schurdak, Ruth H Asch, Bart D Peters, Diana M Lindquist
Neuropsychiatric disorders that frequently initially emerge during adolescence are associated with deficits in the omega-3 (n-3) fatty acid docosahexaenoic acid (DHA), elevated proinflammatory signaling, and regional reductions in white matter integrity (WMI). This study determined the effects of altering brain DHA accrual during adolescence on WMI in the rat brain by diffusion tensor imaging (DTI), and investigated the potential mediating role of proinflammatory signaling. During periadolescent development, male rats were fed a diet deficient in n-3 fatty acids (DEF, n = 20), a fish oil-fortified diet containing preformed DHA (FO, n = 20), or a control diet (CON, n = 20)...
December 8, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/29204342/sex-differences-in-white-matter-alterations-following-repetitive-subconcussive-head-impacts-in-collegiate-ice-hockey-players
#2
Nico Sollmann, Paul S Echlin, Vivian Schultz, Petra V Viher, Amanda E Lyall, Yorghos Tripodis, David Kaufmann, Elisabeth Hartl, Philipp Kinzel, Lorie A Forwell, Andrew M Johnson, Elaine N Skopelja, Christian Lepage, Sylvain Bouix, Ofer Pasternak, Alexander P Lin, Martha E Shenton, Inga K Koerte
Objective: Repetitive subconcussive head impacts (RSHI) may lead to structural, functional, and metabolic alterations of the brain. While differences between males and females have already been suggested following a concussion, whether there are sex differences following exposure to RSHI remains unknown. The aim of this study was to identify and to characterize sex differences following exposure to RSHI. Methods: Twenty-five collegiate ice hockey players (14 males and 11 females, 20...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29199095/analysis-of-white-matter-characteristics-with-tract-based-spatial-statistics-according-to-diffusion-tensor-imaging-in-early-parkinson-s-disease
#3
Xiang-Rong Li, Yan-De Ren, Bo Cao, Xuan-Li Huang
OBJECTIVE: To analyze the microstructure of brain white matter according to diffusion tensor imaging (DTI) based on tract-based spatial statistics (TBSS) in early Parkinson's disease (PD). MATERIALS AND METHODS: A total of 31 age- and sex-matched early PD patients and 22 healthy volunteers were recruited in the present study. DTI was performed, and the data analyzed with fsl4.0 software. The fractional anisotropy (FA) was compared between both groups with an independent t test, and the differential area was analyzed...
November 30, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/29182578/dietary-sialyllactose-influences-sialic-acid-concentrations-in-the-prefrontal-cortex-and-magnetic-resonance-imaging-measures-in-corpus-callosum-of-young-pigs
#4
Austin T Mudd, Stephen A Fleming, Beau Labhart, Maciej Chichlowski, Brian M Berg, Sharon M Donovan, Ryan N Dilger
Sialic acid (SA) is a key component of gangliosides and neural cell adhesion molecules important during neurodevelopment. Human milk contains SA in the form of sialyllactose (SL) an abundant oligosaccharide. To better understand the potential role of dietary SL on neurodevelopment, the effects of varying doses of dietary SL on brain SA content and neuroimaging markers of development were assessed in a newborn piglet model. Thirty-eight male pigs were provided one of four experimental diets from 2 to 32 days of age...
November 28, 2017: Nutrients
https://www.readbyqxmd.com/read/29163108/alterations-in-white-matter-integrity-in-young-adults-with-smartphone-dependence
#5
Yuanming Hu, Xiaojing Long, Hanqing Lyu, Yangyang Zhou, Jianxiang Chen
Smartphone dependence (SPD) is increasingly regarded as a psychological problem, however, the underlying neural substrates of SPD is still not clear. High resolution magnetic resonance imaging provides a useful tool to help understand and manage the disorder. In this study, a tract-based spatial statistics (TBSS) analysis on diffusion tensor imaging (DTI) was used to measure white matter integrity in young adults with SPD. A total of 49 subjects were recruited and categorized into SPD and control group based on their clinical behavioral tests...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29159041/white-matter-alterations-and-their-associations-with-motor-function-in-young-adults-born-preterm-with-very-low-birth-weight
#6
Ingrid Marie Husby Hollund, Alexander Olsen, Jon Skranes, Ann-Mari Brubakk, Asta K Håberg, Live Eikenes, Kari Anne I Evensen
Very low birth weight (VLBW: ≤ 1500 g) individuals have an increased risk of white matter alterations and neurodevelopmental problems, including fine and gross motor problems. In this hospital-based follow-up study, the main aim was to examine white matter microstructure and its relationship to fine and gross motor function in 31 VLBW young adults without cerebral palsy compared with 31 term-born controls, at mean age 22.6 ± 0.7 years. The participants were examined with tests of fine and gross motor function (Trail Making Test-5: TMT-5, Grooved Pegboard, Triangle from Movement Assessment Battery for Children-2: MABC-2 and High-level Mobility Assessment Tool: HiMAT) and diffusion tensor imaging (DTI)...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29113572/effects-of-an-individual-12-week-community-located-start-to-run-program-on-physical-capacity-walking-fatigue-cognitive-function-brain-volumes-and-structures-in-persons-with-multiple-sclerosis
#7
Peter Feys, Lousin Moumdjian, Florian Van Halewyck, Inez Wens, Bert O Eijnde, Bart Van Wijmeersch, Veronica Popescu, Paul Van Asch
BACKGROUND: Exercise therapy studies in persons with multiple sclerosis (pwMS) primarily focused on motor outcomes in mid disease stage, while cognitive function and neural correlates were only limitedly addressed. OBJECTIVES: This pragmatic randomized controlled study investigated the effects of a remotely supervised community-located "start-to-run" program on physical and cognitive function, fatigue, quality of life, brain volume, and connectivity. METHOD: In all, 42 pwMS were randomized to either experimental (EXP) or waiting list control (WLC) group...
November 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/29100660/tracting-the-neural-basis-of-music-deficient-structural-connectivity-underlying-acquired-amusia
#8
Aleksi J Sihvonen, Pablo Ripollés, Teppo Särkämö, Vera Leo, Antoni Rodríguez-Fornells, Jani Saunavaara, Riitta Parkkola, Seppo Soinila
Acquired amusia provides a unique opportunity to investigate the fundamental neural architectures of musical processing due to the transition from a functioning to defective music processing system. Yet, the white matter (WM) deficits in amusia remain systematically unexplored. To evaluate which WM structures form the neural basis for acquired amusia and its recovery, we studied 42 stroke patients longitudinally at acute, 3-month, and 6-month post-stroke stages using DTI [tract-based spatial statistics (TBSS) and deterministic tractography (DT)] and the Scale and Rhythm subtests of the Montreal Battery of Evaluation of Amusia (MBEA)...
October 10, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29082907/self-discharge-against-medical-advice-from-tertiary-health-institution-a-call-for-concern
#9
Moruf Babatunde Yusuf, Johnson Dare Ogunlusi, Sunday Ogunsuyi Popoola, Sheriff Olawale Ogunlayi, Waheed Olaide Babalola, Kehinde Sunday Oluwadiya
BACKGROUND: Self-discharge by patients without completing their treatment is a problematic issue in healthcare and is strongly associated with readmission and poor treatment outcome. PATIENTS AND METHODS: A descriptive study of the rate and reasons why patients with limb injuries took self-discharge against medical advice (DAMA) from our facility, Ekiti State University Teaching Hospital, Ado-Ekiti, Nigeria, a tertiary health institution between May 2011 and April 2014...
July 2017: Nigerian Postgraduate Medical Journal
https://www.readbyqxmd.com/read/29080715/structural-integrity-in-the-genu-of-corpus-callosum-predicts-conflict-induced-functional-connectivity-between-medial-frontal-cortex-and-right-posterior-parietal-cortex
#10
Peng Liu, Yang Yu, Shudan Gao, Jinbo Sun, Xuejuan Yang, Peng Liu, Wei Qin
Studies using the flanker task have reported that response conflict is detected by the medial frontal cortex (MFC). As a conflict alert system, the MFC shows enhanced functional communication with task-related regions. Previous studies have revealed individual differences in functional connectivity during cognitive task performance. However, the mechanisms underlying these individual differences remain unclear. In the current study, electroencephalography (EEG) was recorded while 30 subjects performed a flanker task that was modified to exclude feature integration and contingency learning...
October 31, 2017: Neuroscience
https://www.readbyqxmd.com/read/29080230/white-matter-alterations-over-the-course-of-two-consecutive-high-school-football-seasons-and-the-effect-of-a-jugular-compression-collar-a-preliminary-longitudinal-diffusion-tensor-imaging-study
#11
Weihong Yuan, Kim D Barber Foss, Staci Thomas, Christopher A DiCesare, Jonathan A Dudley, Katie Kitchen, Brooke Gadd, James L Leach, David Smith, Mekibib Altaye, Paul Gubanich, Ryan T Galloway, Paul McCrory, Julian E Bailes, Rebekah Mannix, William P Meehan, Gregory D Myer
The cumulative effects of repetitive subclinical head impacts during sports may result in chronic white matter (WM) changes and possibly, neurodegenerative sequelae. In this pilot study, we investigated the longitudinal WM changes over the course of two consecutive high-school football seasons and explored the long-term effects of a jugular vein compression collar on these WM alterations. Diffusion tensor imaging data were prospectively collected both pre- and postseason in the two consecutive seasons. Participants were assigned into either collar or noncollar groups...
October 28, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29065805/acute-white-matter-abnormalities-in-sports-related-concussion-a-diffusion-tensor-imaging-study-from-the-ncaa-dod-care-consortium
#12
Sourajit Mitra Mustafi, Jaroslaw Harezlak, Kevin M Koch, Andrew S Nencka, Timothy Meier, John D West, Christopher C Giza, John DiFiori, Kevin K Guskiewicz, Jason Mihalik, Stephen M LaConte, Stefan M Duma, Steven P Broglio, Andrew J Saykin, Michael McCrea, Thomas McAllister, Yu-Chien Wu
Sport-related concussion (SRC) is an important public health issue. While standardized assessment tools are useful in the clinical management of acute concussion, the underlying pathophysiology of SRC and the time course of physiological recovery after injury remain unclear. In this study, we used diffusion tensor imaging (DTI) to detect white-matter alterations in football players within 48 hours after SRC. As part of the NCAA-DoD CARE Consortium study of SRC, 30 American football players diagnosed with acute concussion, and 28 matched controls received clinical assessments and underwent advanced MRI scans...
October 25, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29033806/is-congenital-amusia-a-disconnection-syndrome-a-study-combining-tract-and-network-based-analysis
#13
Jieqiong Wang, Caicai Zhang, Shibiao Wan, Gang Peng
Previous studies on congenital amusia mainly focused on the impaired fronto-temporal pathway. It is possible that neural pathways of amusia patients on a larger scale are affected. In this study, we investigated changes in structural connections by applying both tract-based and network-based analysis to DTI data of 12 subjects with congenital amusia and 20 demographic-matched normal controls. TBSS (tract-based spatial statistics) was used to detect microstructural changes. The results showed that amusics had higher diffusivity indices in the corpus callosum, the right inferior/superior longitudinal fasciculus, and the right inferior frontal-occipital fasciculus (IFOF)...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29031764/combined-resting-state-functional-magnetic-resonance-imaging-and-diffusion-tensor-imaging-study-in-patients-with-idiopathic-restless-legs-syndrome
#14
Yaoyao Zhuo, Yuncheng Wu, Yanhong Xu, Lunbo Lu, Ting Li, Xifu Wang, Kangan Li
OBJECTIVE: Restless legs syndrome (RLS) is a common neurological disorder characterized by an urge to move the legs along with paraesthesia deep within them. In this study, we aimed to use diffusion tensor imaging (DTI) and regional homogeneity (ReHo) to investigate the changes in regional spontaneous brain activity change for RLS patients against age- and gender-matched normal control (NC) subjects. METHODS: A total of 35 RLS patients and 27 age- and gender-matched NC subjects were recruited for group comparison research that used DTI and ReHo techniques...
October 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28984377/age-and-sex-related-effects-in-children-with-mild-traumatic-brain-injury-on-diffusion-magnetic-resonance-imaging-properties-a-comparison-of-voxelwise-and-tractography-methods
#15
Naomi J Goodrich-Hunsaker, Tracy J Abildskov, Garrett Black, Erin D Bigler, Daniel M Cohen, Leslie K Mihalov, Barbara A Bangert, H Gerry Taylor, Keith O Yeates
Although there are several techniques to analyze diffusion-weighted imaging, any technique must be sufficiently sensitive to detect clinical abnormalities. This is especially critical in disorders like mild traumatic brain injury (mTBI), where pathology is likely to be subtle. mTBI represents a major public health concern, especially for youth under 15 years of age. However, the developmental period from birth to 18 years is also a time of tremendous brain changes. Therefore, it is important to establish the degree of age- and sex-related differences...
October 6, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28970540/microstructural-network-alterations-of-olfactory-dysfunction-in-newly-diagnosed-parkinson-s-disease
#16
Ming-Ching Wen, Zheyu Xu, Zhonghao Lu, Ling Ling Chan, Eng King Tan, Louis C S Tan
Olfactory dysfunction is a robust and early sign for Parkinson's disease (PD). Previous studies have revealed its association with dementia and related neural changes in PD. Yet, how olfactory dysfunction affects white matter (WM) microstructure in newly diagnosed and untreated PD remains unclear. Here we comprehensively examined WM features using unbiased whole-brain analyses. 88 newly diagnosed PD patients without dementia (70 with hyposmia and 18 without hyposmia) and 33 healthy controls underwent clinical assessment and diffusion tensor imaging (DTI) scanning...
October 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28956133/the-effects-of-mild-germinal-matrix-intraventricular-haemorrhage-on-the-developmental-white-matter-microstructure-of-preterm-neonates-a-dti-study
#17
Domenico Tortora, Carola Martinetti, Mariasavina Severino, Sara Uccella, Mariya Malova, Alessandro Parodi, Fabia Brera, Giovanni Morana, Luca Antonio Ramenghi, Andrea Rossi
OBJECTIVES: To evaluate white matter (WM) microstructural changes in preterm neonates (PN) with mild germinal matrix-intraventricular haemorrhage (mGMH-IVH) (grades I and II) and no other associated MRI abnormalities, and correlate them with gestational age (GA) and neurodevelopmental outcome. METHODS: Tract-based spatial-statistics (TBSS) was performed on DTI of 103 patients studied at term-equivalent age, to compare diffusional parameters (fractional anisotropy (FA), mean diffusivity (MD), radial diffusivity (RD), axial diffusivity (AD)) between mGMH-IVH neonates (24/103) and controls matched by GA at birth and sex...
September 27, 2017: European Radiology
https://www.readbyqxmd.com/read/28948081/sex-specific-effects-of-comt-val158met-polymorphism-on-corpus-callosum-structure-a-whole-brain-diffusion-weighted-imaging-study
#18
Wissam El-Hage, Helen Cléry, Frederic Andersson, Isabelle Filipiak, Michel Thiebaut de Schotten, Benedicte Gohier, Simon Surguladze
BACKGROUND: Genetic polymorphisms play a significant role in determining brain morphology, including white matter structure and may thus influence the development of brain functions. The main objective of this study was to examine the effect of Val158Met (rs4680) polymorphism of Catechol-O-Methyltransferase (COMT) gene on white matter connectivity in healthy adults. METHODS: We used a whole-brain diffusion-weighted imaging method with Tract-Based Spatial Statistics (TBSS) analysis to examine white matter structural integrity in intrinsic brain networks on a sample of healthy subjects (N = 82)...
September 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28927715/microstructural-white-matter-changes-and-their-relation-to-neuropsychological-deficits-in-patients-with-juvenile-myoclonic-epilepsy
#19
Susanne Knake, Christine Roth, Marcus Belke, Jens Sonntag, Tobias Kniess, Soeren Krach, Andreas Jansen, Jens Sommer, Frieder M Paulus, Barbara Carl, Felix Rosenow, Anke M Hermsen, Katja Menzler
OBJECTIVE: Juvenile myoclonic epilepsy (JME) is the most common idiopathic generalized epilepsy syndrome. Neuropsychological, electrophysiological, and neuroimaging studies have led to the hypothesis that JME is related to dysfunction of frontal brain regions and mainly frontal thalamocortical networks. METHODS: We investigated possible microstructural white matter abnormalities of 20 patients with JME as compared with 20 healthy control subjects using diffusion tensor imaging (DTI)...
September 15, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28922736/reduced-white-matter-integrity-in-borderline-personality-disorder-a-diffusion-tensor-imaging-study
#20
Taiga Ninomiya, Harumi Oshita, Yoshihisa Kawano, Chiharu Goto, Mai Matsuhashi, Koji Masuda, Fuku Takita, Toshihiko Izumi, Ayako Inoue, Haruka Higuma, Masayuki Kanehisa, Jotaro Akiyoshi
BACKGROUND: Borderline personality disorder (BPD) has a pervasive pattern of instability in interpersonal relationships, self-image, and emotions. BPD may be linked to an abnormal brain anatomy, but little is known about possible impairments of the white matter microstructure in BPD or their relationship with impulsivity or risky behaviors. The aims of the present study were to explore the relationship between BPD and diffusion tensor imaging (DTI) parameters and psychological tests. METHODS: We evaluated 35 un-medicated BPD patients in a medication-free state and 50 healthy controls (HCs)...
January 1, 2018: Journal of Affective Disorders
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