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https://www.readbyqxmd.com/read/29793094/effects-of-chronic-antipsychotic-drug-exposure-on-the-expression-of-translocator-protein-and-inflammatory-markers-in-rat-adipose-tissue
#1
Anita Calevro, Marie-Caroline Cotel, Sridhar Natesan, Michel Modo, Anthony C Vernon, Valeria Mondelli
The precise effect of antipsychotic drugs on either central or peripheral inflammation remains unclear. An important issue in this debate is to what extent the known peripheral metabolic effects of antipsychotics, including increased adiposity, may contribute to increased inflammation. Adipose tissue is known to contribute to the development of systemic inflammation, which can eventually lead to insulin resistance and metabolic dysregulation. As a first step to address this question, we evaluated whether chronic exposure to clinically comparable doses of haloperidol or olanzapine resulted in the immune activation of rat adipose tissue...
May 16, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29793062/functional-mri-of-brain-physiology-in-aging-and-neurodegenerative-diseases
#2
J Jean Chen
Brain aging and associated neurodegeneration constitute a major societal challenge as well as one for the neuroimaging community. A full understanding of the physiological mechanisms underlying neurodegeneration still eludes medical researchers, fuelling the development of in vivo neuroimaging markers. Hence it is increasingly recognized that our understanding of neurodegenerative processes likely will depend upon the available information provided by imaging techniques. At the same time, the imaging techniques are often developed in response to the desire to observe certain physiological processes...
May 21, 2018: NeuroImage
https://www.readbyqxmd.com/read/29793060/a-computational-framework-for-the-detection-of-subcortical-brain-dysmaturation-in-neonatal-mri-using-3d-convolutional-neural-networks
#3
Rafael Ceschin, Alexandria Zahner, William Reynolds, Jenna Gaesser, Giulio Zuccoli, Cecilia W Lo, Vanathi Gopalakrishnan, Ashok Panigrahy
Deep neural networks are increasingly being used in both supervised learning for classification tasks and unsupervised learning to derive complex patterns from the input data. However, the successful implementation of deep neural networks using neuroimaging datasets requires adequate sample size for training and well-defined signal intensity based structural differentiation. There is a lack of effective automated diagnostic tools for the reliable detection of brain dysmaturation in the neonatal period, related to small sample size and complex undifferentiated brain structures, despite both translational research and clinical importance...
May 21, 2018: NeuroImage
https://www.readbyqxmd.com/read/29792874/pet-staging-of-amyloidosis-using-striatum
#4
Bernard J Hanseeuw, Rebecca A Betensky, Elizabeth C Mormino, Aaron P Schultz, Jorge Sepulcre, John A Becker, Heidi I L Jacobs, Rachel F Buckley, Molly R LaPoint, Patrizia Vanini, Nancy J Donovan, Jasmeer P Chhatwal, Gad A Marshall, Kathryn V Papp, Rebecca E Amariglio, Dorene M Rentz, Reisa A Sperling, Keith A Johnson
INTRODUCTION: Amyloid PET data are commonly expressed as binary measures of cortical deposition. However, not all individuals with high cortical amyloid will experience rapid cognitive decline. Motivated by postmortem data, we evaluated a three-stage PET classification: low cortical; high cortical, low striatal; and high cortical, high striatal amyloid; hypothesizing this model could better reflect Alzheimer's dementia progression than a model based only on cortical measures. METHODS: We classified PET data from 1433 participants (646 normal, 574 mild cognitive impairment, and 213 AD), explored the successive involvement of cortex and striatum using 3-year follow-up PET data, and evaluated the associations between PET stages, hippocampal volumes, and cognition...
May 21, 2018: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/29791949/the-global-neurological-burden-of-tuberculosis
#5
Kiran Thakur, Mitashee Das, Kelly E Dooley, Amita Gupta
Central nervous system (CNS) involvement of tuberculosis (TB) is the most severe manifestation of TB and accounts for approximately 5 to 10% of all extrapulmonary TB (EPTB) cases and approximately 1% of all TB cases. TB meningitis (TBM) is the most common form of CNS TB, though other forms occur, often in conjunction with TBM, including intracranial tuberculomas, tuberculous brain abscesses, and spinal tubercular arachnoiditis. CNS TB often presents with nonspecific clinical features that mimic symptoms of other neurological conditions, often making diagnosis difficult...
April 2018: Seminars in Neurology
https://www.readbyqxmd.com/read/29791945/global-health-epilepsy
#6
Amza Ali
Epilepsy is a frequently misunderstood and highly stigmatized condition. Major treatment gaps exist across the world, most so in areas of financial constraint. Classification permits the best approaches to treatment and to ascertaining prognosis. The International League Against Epilepsy's new classification system emphasizes clinical aspects and utilizes all available resources to determine whether it is a focal or generalized epilepsy. The most important tools are a careful history, clinical examination, electroencephalography, and appropriate neuroimaging...
April 2018: Seminars in Neurology
https://www.readbyqxmd.com/read/29791933/infantile-basal-ganglia-stroke-after-mild-head-trauma-associated-with-mineralizing-angiopathy-of-lenticulostriate-arteries-an-under-recognized-entity
#7
Sandra P Toelle, Tamara Avetisyan, Nune Kuyumjyan, Biayna Sukhudyan, Eugen Boltshauser, Annette Hackenberg
Basal ganglia infarction in young children, mostly after mild head trauma, has been repeatedly reported. The pathogenesis and the risk factors are not fully understood. Lenticulostriate vasculopathy, usually referred to as basal ganglia calcification, is discussed as one of them. We describe five young (7-13 months old on presentation) male children who suffered from hemiparesis due to ischemic stroke of the basal ganglia, four of them after minor head trauma. All of them had calcification in the basal ganglia visible on computed tomography or cranial ultrasound but not on magnetic resonance imaging...
May 23, 2018: Neuropediatrics
https://www.readbyqxmd.com/read/29791867/longitudinal-assessment-of-chemotherapy-induced-changes-in-brain-and-cognitive-functioning-a-systematic-review
#8
REVIEW
Mingmei Li, Karen Caeyenberghs
In addition to the burden of a life-threatening diagnosis, cancer patients are struggling with adverse side-effects from cancer treatment. Chemotherapy has been linked to an array of cognitive impairments and alterations in brain structure and function ("chemobrain"). In this review, we summarized the existing evidence that evaluate the changes in cognitive functioning and brain with chemotherapy, as assessed using structural and functional MRI-based techniques in a longitudinal design. This review followed the latest PRISMA guidelines using Embase, Medline, PsychINFO, Scopus, and Web of Science databases with date restrictions from 2012-2017...
May 20, 2018: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29790456/evaluation-of-neuroimaging-findings-of-central-nervous-system-complications-in-heart-transplant-recipients
#9
Hale Turnaoglu, Ahmet Muhtesem Agildere, Feride Kural Rahatli, Fuldem Yildirim Donmez, Ruhsen Ocal, Taner Sezer, Ufuk Can, Atilla Sezgin, Sait Aslamaci
OBJECTIVES: In this study, we presented neuroradiologic findings and diagnoses of neurologic complications in a series of heart transplant recipients. MATERIALS AND METHODS: A retrospective review was conducted at Başkent University Hospital. We searched the hospital and radiology databases and identified 109 heart transplant recipients. Thirty-one of these recipients had neuroradiologic evaluations secondary to presentation of neurologic symptoms after heart transplant, with 18 patients evaluated with computed tomography and 22 patients evaluated with magnetic resonance imaging (overlap of imaging-defined groups occurred in 9 recipients)...
May 23, 2018: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/29789966/beh%C3%A3-et-s-syndrome-and-nervous-system-involvement
#10
REVIEW
Uğur Uygunoğlu, Aksel Siva
PURPOSE OF REVIEW: Although Behçet's syndrome (BS) is classified as a rare disease in European countries and the USA, its neurologic involvement "neuro-Behçet's syndrome (NBS)" is commonly included in the differential diagnosis of many inflammatory and vascular central nervous system (CNS) disorders. Clinical and neuroimaging findings support two major forms of NBS: parenchymal NBS (p-NBS) and an extra-parenchymal form that presents with cerebral venous sinus thrombosis (CVST)...
May 23, 2018: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/29789304/neuroimaging-findings-in-menkes-disease-a-rare-neurodegenerative-disorder
#11
Pulkit Rangarh, Neera Kohli
Menkes disease is a rare neurodegenerative metabolic disease with a reported incidence of 1 per 300 000 live births. It occurs due to mutations in ATP7A gene located on X-chromosome leading to deficiency of several copper-containing enzymes. The patient presents with history of neuroregression with characteristic kinky hair. MRI is the imaging modality of choice. Characteristic imaging findings are: bilateral subdural hygromas, cerebral and cerebellar atrophy, white matter changes and tortuous intracranial vessels on angiography...
May 22, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29789268/making-individual-prognoses-in-psychiatry-using-neuroimaging-and-machine-learning
#12
REVIEW
Ronald J Janssen, Janaina Mourão-Miranda, Hugo G Schnack
Psychiatric prognosis is a difficult problem. Making a prognosis requires looking far into the future, as opposed to making a diagnosis, which is concerned with the current state. During the follow-up period, many factors will influence the course of the disease. Combined with the usually scarcer longitudinal data and the variability in the definition of outcomes/transition, this makes prognostic predictions a challenging endeavor. Employing neuroimaging data in this endeavor introduces the additional hurdle of high dimensionality...
April 22, 2018: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/29789029/pediatric-brain-development-in-down-syndrome-a-field-in-its-infancy
#13
Taralee Hamner, Manisha D Udhnani, Karol Z Osipowicz, Nancy Raitano Lee
OBJECTIVES: As surprisingly little is known about the developing brain studied in vivo in youth with Down syndrome (DS), the current review summarizes the small DS pediatric structural neuroimaging literature and begins to contextualize existing research within a developmental framework. METHODS: A systematic review of the literature was completed, effect sizes from published studies were reviewed, and results are presented with respect to the DS cognitive behavioral phenotype and typical brain development...
May 23, 2018: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/29788790/eeg-differences-in-two-clinically-similar-rapid-dementias-voltage-gated-potassium-channel-complex-associated-autoimmune-encephalitis-and-creutzfeldt-jakob-disease
#14
Brin Freund, John C Probasco, Mackenzie C Cervenka, Raoul Sutter, Peter W Kaplan
Distinguishing treatable causes for rapidly progressive dementia from those that are incurable is vital. Creutzfeldt-Jakob disease (CJD) and voltage-gated potassium channel complex-associated autoimmune encephalitis (VGKC AE) are 2 such conditions with disparate outcomes and response to treatment. To determine the differences in electroencephalography between CJD and VGKC AE, we performed a retrospective review of medical records and examined clinical data, neuroimaging, and electroencephalographs performed in patients admitted for evaluation for rapidly progressive dementia diagnosed with CJD and VGKC AE at the Johns Hopkins Hospital and Bayview Medical Center between January 1, 2007 and December 31, 2015...
May 1, 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/29788013/cerebrospinal-fluid-bace1-activity-and-sa%C3%AE-pp%C3%AE-as-biomarker-candidates-of-alzheimer-s-disease
#15
Panagiotis Alexopoulos, Nathalie Thierjung, Timo Grimmer, Marion Ortner, Polychronis Economou, Konstantinos Assimakopoulos, Philippos Gourzis, Antonios Politis, Robert Perneczky
BACKGROUND/AIMS: The utility of β-site amyloid-β precursor protein (AβPP) cleaving enzyme 1 (BACE1) activity and soluble AβPP β (sAβPPβ) levels in cerebrospinal fluid (CSF) in detecting Alzheimer's disease (AD) is still elusive. METHODS: BACE1 activity and sAβPPβ concentration were measured in patients with AD dementia (n = 56) and mild cognitive impairment (MCI) due to AD (n = 76) with abnormal routine AD CSF markers, in patients with MCI with normal CSF markers (n = 39), and in controls without preclinical AD (n = 48)...
May 22, 2018: Dementia and Geriatric Cognitive Disorders
https://www.readbyqxmd.com/read/29787982/neuroimaging-findings-of-extensive-sphenoethmoidal-dysplasia-in-nf1
#16
Allison Tam, Joseph M Sliepka, Sunil Bellur, Collin Douglas Bray, Christie M Lincoln, Sandesh C S Nagamani
Whereas isolated sphenoid wing dysplasia (SWD) is a well-known clinical feature in neurofibromatosis 1 (NF1), extensive cranial defects involving multiple bones have been rarely reported in this disorder. In this report, we describe the clinical course of a 20-year-old male with NF1 and an extensive cranial bone dysplasia. The large sphenoethmoidal defect was associated with transethmoidal and orbital cephalocele as well as inferolateral herniation of the frontal lobe. In spite of the large defect, the individual did not have any symptoms or complications resulting from the osteopathy...
May 16, 2018: Clinical Imaging
https://www.readbyqxmd.com/read/29787866/handedness-dependent-functional-organizational-patterns-within-the-bilateral-vestibular-cortical-network-revealed-by-fmri-connectivity-based-parcellation
#17
V Kirsch, R Boegle, D Keeser, E Kierig, B Ertl-Wagner, T Brandt, M Dieterich
Current evidence points towards a vestibular cortex that involves a multisensory bilateral temporo-parietal-insular network with a handedness-dependent hemispheric lateralization. This study aimed to identify handedness-dependent organizational patterns of (lateralized and non-lateralized) functional subunits within the human vestibular cortex areas. 60 healthy volunteers (30 left-handed and 30 right-handed) were examined on a 3T MR scanner using resting state functional MRI (fMRI). The data was analyzed in four major steps using a functional connectivity based parcellation (fCBP) approach: (1) independent component analysis (ICA) on a whole brain level to identify different resting state networks (RSN); (2) creation of a vestibular informed mask from four whole brain ICs that included reference coordinates of the vestibular network extracted from meta-analyses of vestibular neuroimaging experiments; (3) Re-ICA confined to the vestibular informed mask; (4) cross-correlation of the activated voxels within the vestibular subunits (parcels) to each other (P-to-P) and to the whole-brain RSN (P-to-RSN)...
May 19, 2018: NeuroImage
https://www.readbyqxmd.com/read/29787789/the-cognitive-up-and-down-regulation-of-positive-emotion-evidence-from-behavior-electrophysiology-and-neuroimaging
#18
Fenghua Li, Shouhang Yin, Pan Feng, Na Hu, Cody Ding, Antao Chen
Although numerous studies have investigated emotion regulation, the physiological responses and neural substrates of positive emotion regulation remain unclear. To address this question, we explored the effect of reappraisal on subjective experience, zygomatic electromyography (zEMG) response, and blood oxygen level response, using the same materials across three independent experiments. Behaviorally, up-regulating positive emotion increased the valence, arousal, and zEMG response, whereas down-regulating positive emotion decreased the valence, but not arousal or the zEMG response...
May 19, 2018: Biological Psychology
https://www.readbyqxmd.com/read/29787544/a-clinical-prediction-model-for-raised-intracranial-pressure-in-patients-with-traumatic-brain-injuries
#19
J Pace, N Parry, K Vogt, R Hilsden, R Leeper, Z Markova, F Priestap, J Younan, I M Ball
BACKGROUND: Intracranial hypertension is believed to contribute to secondary brain insult in traumatically brain injured patients. Currently the diagnosis of intracranial hypertension requires intracranial monitoring or advanced imaging. Unfortunately, prehospital transport times can be prolonged, delaying time to the initial radiographic assessment. The aim of this study was to identify clinical variables associated with raised intracranial pressure (ICP) prior to the completion of neuroimaging...
April 30, 2018: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29786809/-diagnosing-epileptic-seizures-and-epilepsy
#20
Kristina Malmgren, Tommy Stödberg, Åsa Amandusson, Maria Strandberg
There are many episodic conditions which may be confused with epileptic seizures. The diagnosis of epileptic seizures is still dependent on a good history and witness report, as well as good knowledge of seizure semiology, and of the symptoms of a variety of differential diagnostic conditions. The principal differential diagnoses in adults and children are outlined in this review. The diagnostic problems do not exist only initially, so it is important to reconsider the diagnosis when deemed relevant. The possibility of home video recordings of recurring attacks may be helpful...
May 21, 2018: Läkartidningen
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