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https://www.readbyqxmd.com/read/29438526/magnetic-resonance-imaging-guided-laser-interstitial-thermal-therapy-for-glioblastoma-of-the-corpus-callosum
#1
Thomas L Beaumont, Alireza M Mohammadi, Albert H Kim, Gene H Barnett, Eric C Leuthardt
BACKGROUND: Glioblastoma of the corpus callosum is particularly difficult to treat, as the morbidity of surgical resection generally outweighs the potential survival benefit. Laser interstitial thermal therapy (LITT) is a safe and effective treatment option for difficult to access malignant gliomas of the thalamus and insula. OBJECTIVE: To assess the safety and efficacy of LITT for the treatment of glioblastoma of the corpus callosum. METHODS: We performed a multicenter retrospective analysis of prospectively collected data...
February 8, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29395610/disrupted-salience-processing-involved-in-motivational-deficits-for-real-life-activities-in-patients-with-schizophrenia
#2
Byung-Hoon Kim, Yu-Bin Shin, Sunghyon Kyeong, Seon-Koo Lee, Jae-Jin Kim
Motivational deficits in patients with schizophrenia adversely affect various domains of daily living. This symptom in everyday life situations manifests in a complex behavioral pattern whose root cannot be simplified to an impaired reward-motivation scheme. This study aimed to identify impairment of the salience network that underlies motivational deficits seen in patients with schizophrenia in real-life situations. During the functional magnetic resonance imaging scan, 20 patients with schizophrenia and 20 normal controls performed a task mimicking real-life situations, in which an avatar proposed participation in a daily activity with either an intrinsic or extrinsic reward...
January 27, 2018: Schizophrenia Research
https://www.readbyqxmd.com/read/29386913/altered-low-frequency-oscillation-amplitude-of-resting-state-fmri-in-patients-with-discogenic-low-back-and-leg-pain
#3
Fuqing Zhou, Lili Gu, Shunda Hong, Jiaqi Liu, Jian Jiang, Muhua Huang, Yong Zhang, Honghan Gong
Objective: The aim of this study was to explore the amplitude of intrinsic low-frequency oscillations (LFOs) in patients with discogenic low-back and leg pain (LBLP). Participants and methods: We obtained and compared the LFO amplitude from 25 right-handed discogenic LBLP patients (13 males; mean age 55.16±1.83 years) and 27 well-matched healthy controls (15 males; mean age 52.96±1.63 years). The LFO amplitude was examined using the voxel-wise amplitude of low-frequency fluctuations (ALFFs), and partial correlation analysis was performed to determine the relationship between the regions with altered ALFF values and clinical parameters in discogenic LBLP patients...
2018: Journal of Pain Research
https://www.readbyqxmd.com/read/29376088/an-in%C3%A2-vivo-11c-pk-pet-study-of-microglia-activation-in-fatal-familial-insomnia
#4
Leonardo Iaccarino, Luca Presotto, Valentino Bettinardi, Luigi Gianolli, Ignazio Roiter, Sabina Capellari, Piero Parchi, Pietro Cortelli, Daniela Perani
Objective: Postmortem studies reported significant microglia activation in association with neuronal apoptosis in Fatal Familial Insomnia (FFI), indicating a specific glial response, but negative evidence also exists. An in vivo study of local immune responses over FFI natural course may contribute to the understanding of the underlying pathogenesis. Methods: We included eight presymptomatic subjects (mean ± SD age:44.13 ± 3.83 years) carrying the pathogenic D178N-129met FFI mutation, one symptomatic patient (male, 45 yrs...
January 2018: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/29353213/multiple-cortical-thickness-sub-networks-and-cognitive-impairments-in-first-episode-drug-na%C3%A3-ve-patients-with-late-life-depression-a-graph-theory-analysis
#5
Jeong-Hyeon Shin, Yu Hyun Um, Chang Uk Lee, Hyun Kook Lim, Joon-Kyung Seong
BACKGROUND: Coordinated and pattern-wise changes in large scale gray matter structural networks reflect neural circuitry dysfunction in late life depression (LLD), which in turn is associated with emotional dysregulation and cognitive impairments. However, due to methodological limitations, there have been few attempts made to identify individual-level structural network properties or sub-networks that are involved in important brain functions in LLD. METHODS: In this study, we sought to construct individual-level gray matter structural networks using average cortical thicknesses of several brain areas to investigate the characteristics of the gray matter structural networks in normal controls and LLD patients...
January 5, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29349864/the-morphometric-co-atrophy-networking-of-schizophrenia-autistic-and-obsessive-spectrum-disorders
#6
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/29336871/epigenetic-regulation-of-the-kappa-opioid-receptor-gene-by-an-insertion-deletion-in-the-promoter-region
#7
Pierre-Eric Lutz, Daniel Almeida, Raoul Belzeaux, Ipek Yalcin, Gustavo Turecki
Preclinical and clinical studies have demonstrated that the kappa opioid receptor (KOR) regulates reward, hedonic tone and emotions. At therapeutic level, on-going clinical trials are assessing the potential of targeting the KOR for the management of depression, anxiety disorders and substance use disorders. However, genetic polymorphisms in the KOR gene that potentially contribute to its implication in these phenotypes have been poorly studied. Here we investigated an insertion-deletion in the promoter region of KOR (rs35566036), recently associated with alcohol addiction, in a cohort of depressed subjects who died by suicide, as well as psychiatrically healthy individuals...
January 11, 2018: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29329055/altered-brain-structure-in-women-with-premenstrual-syndrome
#8
Peng Liu, Ying Wei, Yingying Fan, Ru Li, Yanfei Liu, Geliang Wang, Yichen Wei, Yong Pang, Demao Deng, Wei Qin
BACKGROUND: Functional brain abnormalities have been noted in premenstrual syndrome (PMS). However, the brain structural alterations related to PMS remain unclear. This study aimed to identify possible abnormalities in gray matter (GM) volumes and structural covariance patterns among PMS patients. METHODS: Structural magnetic resonance imaging data were obtained from 20 PMS patients and 20 healthy controls. Voxel-based morphometry (VBM) analysis was applied to examine GM volumes changes between the two groups...
January 3, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29318488/disrupted-topological-organization-of-the-frontal-mesolimbic-network-in-obese-patients
#9
Qianqian Meng, Yu Han, Gang Ji, Guanya Li, Yang Hu, Li Liu, Qingchao Jin, Karen M von Deneen, Jizheng Zhao, Guangbin Cui, Huaning Wang, Dardo Tomasi, Nora D Volkow, Jixin Liu, Yongzhan Nie, Yi Zhang, Gene-Jack Wang
Neuroimaging studies have revealed brain functional abnormalities in frontal-mesolimbic regions in obesity. However, the effects of obesity on brain network topology remains largely unknown. In the current study, we employed resting-state functional magnetic resonance imaging and graph theory methods to investigate obesity-related changes in brain network topology in 26 obese patients and 28 normal weight subjects. Results revealed that the whole-brain networks of the two groups exhibited typical features of small-world topology...
January 9, 2018: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/29315714/brain-abnormalities-in-cognition-anxiety-and-depression-regulatory-regions-in-adolescents-with-single-ventricle-heart-disease
#10
Nancy A Pike, Bhaswati Roy, Ritika Gupta, Sadhana Singh, Mary A Woo, Nancy J Halnon, Alan B Lewis, Rajesh Kumar
BACKGROUND: Single ventricle heart disease (SVHD) adolescents show cognitive impairments and anxiety and depressive symptoms, indicating the possibility of brain injury in regions that control these functions. However, brain tissue integrity in cognition, anxiety, and depression regulatory sites in SVHD remains unclear. We examined brain tissue changes in SVHD compared to controls using T2-relaxometry procedures, which measure free water content and show tissue injury. METHODS: Proton-density and T2-weighted images, using a 3...
January 6, 2018: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/29275207/grey-matter-and-functional-connectivity-in-anterior-cingulate-cortex-is-associated-with-the-state-of-mental-silence-during-sahaja-yoga-meditation
#11
Sergio Elías Hernández, Alfonso Barros-Loscertales, Yaqiong Xiao, José Luis González-Mora, Katya Rubia
Some meditation techniques teach the practitioner to achieve the state of mental silence. The aim of this study was to investigate brain regions that are associated in their volume and functional connectivity with the depth of mental silence in long-term practitioners of Sahaja Yoga Meditation. Twenty-three long-term practitioners of this meditation were scanned using Magnetic Resonance Imaging. In order to identify the neural correlates of the depth of mental silence, we tested which grey matter volumes were correlated with the depth of mental silence and which regions these areas were functionally connected to under a meditation condition...
December 21, 2017: Neuroscience
https://www.readbyqxmd.com/read/29273534/altered-functional-connectivity-of-the-subthalamic-nucleus-during-self-initiated-movement-in-parkinson-s-disease
#12
Qian Jia, Linlin Gao, Jiarong Zhang, Tao Wu, Piu Chan
BACKGROUND AND PURPOSE: Patients with Parkinson's disease (PD) have difficulty performing self-initiated movements. The neural mechanism of this deficiency remains unclear. In the present study, we used functional magnetic resonance imaging (fMRI) to investigate the functional connectivity of the subthalamic nucleus (STN) during self-initiated movement in patients with PD. MATERIALS AND METHODS: fMRI were acquired from patients with PD and age- and sex-matched healthy control subjects during a self-initiated right hand tapping task...
December 19, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/29247965/predictive-value-of-preoperative-statistical-parametric-mapping-of-regional-glucose-metabolism-in-mesial-temporal-lobe-epilepsy-with-hippocampal-sclerosis
#13
Martin Kojan, Irena Doležalová, Eva Koriťáková, Radek Mareček, Zdeněk Řehák, Markéta Hermanová, Milan Brázdil, Ivan Rektor
OBJECTIVE: This study was designed to use statistical parametric mapping of interictal positron-emission tomography using [18F]Fluorodeoxyglucose (FDG-PET) to compare the brain metabolisms of patients with mesial temporal lobe epilepsy (MTLE)/hippocampal sclerosis and controls. Another aim of this study was to analyze the potential differences among patients in terms of epilepsy duration, side of hippocampal sclerosis, histopathological findings, insult in their history, and postoperative outcomes...
December 13, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29247808/affective-value-intensity-and-quality-of-liquid-tastants-food-discernment-in-the-human-brain-an-activation-likelihood-estimation-meta-analysis
#14
Andy Wai Kan Yeung, Tazuko K Goto, W Keung Leung
The primary dimensions of taste are affective value, intensity and quality. Numerous studies have reported the role of the insula in evaluating these dimensions of taste; however, the results were inconsistent. Therefore, in the current study, we performed meta-analyses of published data to identify locations consistently activated across studies and evaluate whether different regions of the human brain could be responsible for processing different dimensions of taste. Meta-analyses were performed on 39 experiments, with 846 total healthy subjects (without psychiatric/neurological disorders) in 34 studies reporting whole-brain results...
December 13, 2017: NeuroImage
https://www.readbyqxmd.com/read/29247717/higher-order-thalamic-nuclei-resting-network-connectivity-in-early-schizophrenia-and-major-depressive-disorder
#15
Jacob Penner, Elizabeth A Osuch, Betsy Schaefer, Jean Théberge, Richard W J Neufeld, Ravi S Menon, Nagalingam Rajakumar, James A Bourne, Peter C Williamson
The pulvinar and the mediodorsal (MDN) nuclei of the thalamus are higher order nuclei which have been implicated in directed effort and corollary discharge systems. We used seed-based resting fMRI to examine functional connectivity to bilateral pulvinar and MDN in 24 schizophrenic patients (SZ), 24 major depressive disorder patients (MDD), and 24 age-matched healthy controls. SZ had less connectivity than controls between the left pulvinar and precuneus, left ventral-lateral prefrontal cortex (vlPFC), and superior and medial-frontal regions, between the right pulvinar and right frontal pole, and greater connectivity between the right MDN and left dorsolateral prefrontal cortex (dlPFC)...
December 8, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29235190/intrinsic-functional-connectivity-of-the-central-extended-amygdala
#16
Rachael M Tillman, Melissa D Stockbridge, Brendon M Nacewicz, Salvatore Torrisi, Andrew S Fox, Jason F Smith, Alexander J Shackman
The central extended amygdala (EAc)-including the bed nucleus of the stria terminalis (BST) and central nucleus of the amygdala (Ce)-plays a critical role in triggering fear and anxiety and is implicated in the development of a range of debilitating neuropsychiatric disorders. Although it is widely believed that these disorders reflect the coordinated activity of distributed neural circuits, the functional architecture of the EAc network and the degree to which the BST and the Ce show distinct patterns of functional connectivity is unclear...
December 12, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29222023/regional-brain-gray-matter-changes-in-adolescents-with-single-ventricle-heart-disease
#17
Sadhana Singh, Rajesh Kumar, Bhaswati Roy, Mary A Woo, Alan Lewis, Nancy Halnon, Nancy Pike
Adolescents with single ventricle heart disease (SVHD) show autonomic, mood, and cognitive deficits, indicating aberrations in brain areas that regulate these functions. However, the gray matter integrity in autonomic, mood, and cognitive control sites is unclear. We examined regional brain gray matter changes, using high-resolution T1-weighted images (3.0-T magnetic resonance scanner) with voxel based morphometry procedures, as well as mood and cognitive functions in SVHD (n=18; age, 15.7±1.1years; male, 10) and controls (n=31; age, 16...
December 6, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/29219633/brain-activity-during-phonation-in-healthy-female-singers-with-supraglottic-compression-an-fmri-pilot-study
#18
Maryna Kryshtopava, Kristiane Van Lierde, Charlotte Defrancq, Michiel De Moor, Zoë Thijs, Evelien D'Haeseleer, Iris Meerschman, Pieter Vandemaele, Guy Vingerhoets, Sofie Claeys
This pilot study evaluated the usability of functional magnetic resonance imaging (fMRI) to detect brain activation during phonation in healthy female singers with supraglottic compression. Four healthy female classical singers (mean age: 26 years) participated in the study. All subjects had normal vocal folds and vocal characteristics and showed supraglottic compression. The fMRI experiment was carried out using a block design paradigm. Brain activation during phonation and exhalation was analyzed using Brain Voyager software (Brain Innovation B...
December 8, 2017: Logopedics, Phoniatrics, Vocology
https://www.readbyqxmd.com/read/29200856/altered-microstructure-of-brain-white-matter-in-females-with-anorexia-nervosa-a-diffusion-tensor-imaging-study
#19
Shao-Hua Hu, Hong Feng, Ting-Ting Xu, Hao-Rong Zhang, Zhi-Yong Zhao, Jian-Bo Lai, Dong-Rong Xu, Yi Xu
Objective: Structural studies have reported anorexia nervosa (AN) patients with abnormal gray matter in several brain regions and dysfunction in some connected neural circuits. However, the role of white matter (WM) in AN patients has rarely been investigated. The present study aimed to assess alterations in WM microstructure of the entire brain in females with AN using a voxel-based method on diffusion tensor imaging (DTI) data. Materials and methods: The study enrolled 8 female patients with AN and 14 age-matched females as controls (CW)...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/29200179/structural-and-functional-abnormalities-of-the-insular-cortex-in-trigeminal-neuralgia-a-multimodal-mri-analysis
#20
Yue Wang, Yuanchao Zhang, Jinlei Zhang, Jiaojian Wang, Jinping Xu, Jie Li, Gaoyu Cui, Jiuquan Zhang
Trigeminal neuralgia (TN) is a chronic neuropathic pain disorder characterized by intense, lancinating attacks of facial pain. Increasing evidence suggests that TN is accompanied by abnormalities in brain morphology, white matter microstructure and function. However, whether these abnormalities are linked or reflect independent etiologies remains unknown. Using multimodal magnetic resonance imaging data of 20 TN patients and 21 healthy controls (HC), we investigated cortical gyrification abnormalities, their relationships with abnormalities of the underlying white matter microstructure and gray matter morphology, as well as their functional significance in TN...
December 1, 2017: Pain
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