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https://www.readbyqxmd.com/read/29166594/individual-differences-in-processing-emotional-images-after-reading-disgusting-and-neutral-sentences
#1
Alex Hartigan, Anne Richards
The present study examined the extent to which Event Related Potentials (ERPs) evoked by disgusting, threatening and neutral photographic images were influenced by disgust propensity, disgust sensitivity and attentional control following exposure to disgusting information. Emotional cognition was manipulated by instructing participants to remember either disgusting or neutral sentences; participants in both groups then viewed emotional images while ERPs were recorded. Disgust propensity was associated with a reduced Late Positive Potential (LPP) gap between threatening and neutral stimuli (an effect driven by a rise in the LPP for neutral images) but only amongst individuals who were exposed to disgusting sentences...
November 19, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/29166136/the-gamma-aminobutyric-acid-b-receptor-gabab-encephalitis-clinical-manifestations-and-response-to-immunotherapy
#2
Junzhao Cui, Hui Bu, Junying He, Zeyan Zhao, Weixin Han, Ruiping Gao, Xiaoqing Li, Qing Li, Xiaosu Guo, Yueli Zou
PURPOSE: We report 11 patients diagnosed with GABAB receptor (GABABR) antibodies encephalitis in China and aim to analyse the clinical characteristics, laboratory and imaging findings, therapeutic modalities and outcomes. METHODS: Clinical data from patients diagnosed with anti-GABAB receptor encephalitis in the Second Affiliated Hospital of Hebei Medical University from February 2016 to October 2016 January were retrospectively collected and evaluated. RESULTS: Seven of the eleven patients were males, and a mean age at presentation of 63 years (range: 47-79 years)...
November 22, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/29164280/functional-brain-networks-involved-in-decision-making-under-certain-and-uncertain-conditions
#3
Danielle C Farrar, Asim Z Mian, Andrew E Budson, Mark B Moss, Ronald J Killiany
PURPOSE: The aim of this study was to describe imaging markers of decision-making under uncertain conditions in normal individuals, in order to provide baseline activity to compare to impaired decision-making in pathological states. METHODS: In this cross-sectional study, 19 healthy subjects ages 18-35 completed a novel decision-making card-matching task using a Phillips T3 Scanner and a 32-channel head coil. Functional data were collected in six functional runs...
November 21, 2017: Neuroradiology
https://www.readbyqxmd.com/read/29164115/cross-sectional-associations-of-fatigue-with-cerebral-%C3%AE-amyloid-in-older-adults-at-risk-of-dementia
#4
Claudie Hooper, Philipe De Souto Barreto, Nicola Coley, Matteo Cesari, Pierre Payoux, Anne Sophie Salabert, Sandrine Andrieu, Bruno Vellas
Fatigue is a common symptom in the elderly and has also been associated with impaired cognition in older adults. Hence, we sought to explore the cross-sectional relationship between fatigue and cerebral β-amyloid (Aβ) in 269 elderly individuals reporting subjective memory complaints from the Multidomain Alzheimer Preventive Trial. Standard uptake value ratios (SUVRs) were generated by [(18)F] florbetapir positron emission tomography (PET) using the cerebellum as a reference. Cortical-to-cerebellar SUVRs (cortical-SUVRs) were obtained using the mean signal from the frontal cortex, temporal cortex, parietal cortex, precuneus, anterior cingulate, and posterior cingulate...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/29163141/disrupted-functional-connectivity-of-basal-ganglia-across-tremor-dominant-and-akinetic-rigid-dominant-parkinson-s-disease
#5
Xiaojun Guan, Qiaoling Zeng, Tao Guo, Jiaqiu Wang, Min Xuan, Quanquan Gu, Tao Wang, Peiyu Huang, Xiaojun Xu, Minming Zhang
It is well known that disruption of basal ganglia function generates the motor symptoms in PD, however, these are presented in a heterogeneous manner; patients can be divided into tremor-dominant and akinesia/rigidity-dominant subtypes. To date, it is unknown if these differences in the motor symptoms could be explained by differences on the functional connectivity of basal ganglia with specific brain regions. In this study, we aimed to explore the alterations of the network-based and global functional connectivity linking to basal ganglia between the PD-TD and PD-AR patients...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29162026/spontaneous-rupture-of-multiple-occipital-artery-aneurysms-in-a-patient-with-neurofibromatosis-type-1
#6
Daniele Bissacco, Maurizio Domanin, Silvia Romagnoli, Edoardo Martelli, Vittorio Civelli, Livio Gabrielli
Neurofibromatosis type 1 (NF-1) is an autosomal dominant genetic disorder, mainly characterized by skin and peripheral nervous system abnormalities. Uncommonly, NF-1 may be associated with peripheral or supra-aortic trunks artery aneurysms. We report a case of symptomatic multiple occipital artery aneurysms detected in a 53-year-old woman affected by sporadic NF-1. An endovascular approach was performed to exclude aneurysms and to stop laterocervical spontaneous hematoma.
January 1, 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29161336/efficacy-of-electrical-stimulation-of-the-occipital-nerve-in-intractable-primary-headache-disorders-a-systematic-review-with-meta-analyses
#7
Robert T Cadalso, John Daugherty, Caron Holmes, Saravanan Ram, Reyes Enciso
AIMS: To determine the efficacy of occipital nerve stimulation (ONS) in reducing the intensity, duration, and frequency of medically intractable primary headaches. METHODS: A systematic review was carried out by searching three electronic databases: the Cochrane Library, MEDLINE via PubMed, and Web of Science. Randomized controlled trials (RCTs) and case series were eligible for inclusion. RCTs were assessed for quality of evidence by using the Cochrane Risk of Bias and the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) tools...
November 21, 2017: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/29160033/discordant-fetal-phenotype-of-hypophosphatasia-in-two-siblings
#8
Satoru Ikenoue, Kei Miyakoshi, Tomohiro Ishii, Yu Sato, Toshimitsu Otani, Yohei Akiba, Yoshifumi Kasuga, Daigo Ochiai, Tadashi Matsumoto, Yosuke Ichihashi, Yohei Matsuzaki, Kanako Tachikawa, Toshimi Michigami, Gen Nishimura, Kazushige Ikeda, Tomonobu Hasegawa, Mamoru Tanaka
Hypophosphatasia (HPP) is an autosomal recessive metabolic disorder with impaired bone mineralization due to mutations in the ALPL gene. The genotype-phenotype correlation of this disorder has been widely described. Here, we present two affected siblings, whose fetal phenotypes were discordant. A 31-year-old Japanese woman, G0P0, was referred to our institution because of fetal micromelia. After obstetric counseling, the pregnancy was terminated at 21 weeks' gestation. Post-mortem radiographs demonstrated severely defective mineralization of the skeleton...
November 21, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29159974/ultrasonographic-anatomy-of-the-atlanto-occipital-region-and-ultrasound-guided-cerebrospinal-fluid-collection-in-rabbits-oryctolagus-cuniculus
#9
Carlo Anselmi, Sara Dias, Jaume Martorell, Marc Navarro, Yvonne Espada, Rosa Novellas
Cerebrospinal fluid analyses are important for diagnosis of neurologic problems in rabbits and for translational research projects using rabbits as models. Blind puncture of the cisterna magna is the current standard technique for sampling cerebrospinal fluid in this species. However, the complexity and small size of the cisterna magna and surrounding structures are limitations of this technique. Aims of this prospective, anatomic, pilot study were to (1) describe the normal anatomy of the atlanto-occipital region, (2) describe ultrasonographic anatomic landmarks, and (3) develop and evaluate a technique for ultrasound-guided puncture of the cisterna magna for cerebrospinal fluid sampling in rabbits...
November 20, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/29159873/orthopaedic-manifestations-within-the-22q11-2-deletion-syndrome-a-systematic-review
#10
Jelle F Homans, Isabel N Tromp, Dino Colo, Tom P C Schlösser, Moyo C Kruyt, Vincent F X Deeney, Terrence B Crowley, Donna M McDonald-McGinn, René M Castelein
The 22q11.2 Deletion Syndrome (22q11.2DS) is the most common microdeletion syndrome with an estimated prevalence of 1:4,000 live births. 22q11.2DS is known to have wide phenotypic variability, including orthopaedic manifestations. The purpose of this systematic review is to increase the awareness of orthopaedic manifestations associated with 22q11.2DS. This systematic review was performed according to the PRISMA Guidelines. Original epidemiological studies on the prevalence of orthopaedic manifestations within 22q11...
November 21, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29159205/decreased-occipital-lobe-metabolism-by-fdg-pet-ct-an-anti-nmda-receptor-encephalitis-biomarker
#11
John C Probasco, Lilja Solnes, Abhinav Nalluri, Jesse Cohen, Krystyna M Jones, Elcin Zan, Mehrbod S Javadi, Arun Venkatesan
Objective: To compare brain metabolism patterns on fluorodeoxyglucose (FDG)-PET/CT in anti-NMDA receptor and other definite autoimmune encephalitis (AE) and to assess how these patterns differ between anti-NMDA receptor neurologic disability groups. Methods: Retrospective review of clinical data and initial dedicated brain FDG-PET/CT studies for neurology inpatients with definite AE, per published consensus criteria, treated at a single academic medical center over a 10-year period...
January 2018: Neurology® Neuroimmunology & Neuroinflammation
https://www.readbyqxmd.com/read/29159151/a-case-of-unusual-presentation-of-contrast-induced-encephalopathy-after-cerebral-angiography-using-iodixanol
#12
Jun Chul Park, Jun Hyong Ahn, In Bok Chang, Jae Keun Oh, Ji Hee Kim, Joon Ho Song
Contrast-induced encephalopathy after cerebral angiography is a rare complication and until now, only few cases have been reported. This paper reports on contras-induced encephalopathy mimicking meningoencephalitis after cerebral angiography by using iodixanol, an iso-osmolar non-ionic contrast agent. A 58-year-old woman underwent cerebral angiography for the evaluation of multiple intracranial aneurysms. A few hours later, she had persistent headache, vomiting, fever, and seizures. Brain computed tomography (CT) showed sulcal obliteration of right cerebral hemisphere and cerebrospinal fluid profile was unremarkable...
September 2017: Journal of Cerebrovascular and Endovascular Neurosurgery
https://www.readbyqxmd.com/read/29159062/evaluation-of-factors-influencing-18-f-fet-uptake-in-the-brain
#13
Antoine Verger, Carina Stegmayr, Norbert Galldiks, Axel Van Der Gucht, Philipp Lohmann, Gabriele Stoffels, Nadim J Shah, Gereon R Fink, Simon B Eickhoff, Eric Guedj, Karl-Josef Langen
PET using the amino-acid O-(2-(18)F-fluoroethyl)-l-tyrosine ((18)F-FET) is gaining increasing interest for brain tumour management. Semi-quantitative analysis of tracer uptake in brain tumours is based on the standardized uptake value (SUV) and the tumour-to-brain ratio (TBR). The aim of this study was to explore physiological factors that might influence the relationship of SUV of (18)F-FET uptake in various brain areas, and thus affect quantification of (18)F-FET uptake in brain tumours. Negative (18)F-FET PET scans of 107 subjects, showing an inconspicuous brain distribution of (18)F-FET, were evaluated retrospectively...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29159058/local-and-distant-relationships-between-amyloid-tau-and-neurodegeneration-in-alzheimer-s-disease
#14
Leonardo Iaccarino, Gautam Tammewar, Nagehan Ayakta, Suzanne L Baker, Alexandre Bejanin, Adam L Boxer, Maria Luisa Gorno-Tempini, Mustafa Janabi, Joel H Kramer, Andreas Lazaris, Samuel N Lockhart, Bruce L Miller, Zachary A Miller, James P O'Neil, Rik Ossenkoppele, Howard J Rosen, Daniel R Schonhaut, William J Jagust, Gil D Rabinovici
The relationships between β-amyloid (Aβ), tau and neurodegeneration within Alzheimer's Disease pathogenesis are not fully understood. To explore these associations in vivo, we evaluated 30 Aβ PET-positive patients (mean ± sd age 62.4 ± 8.3) with mild probable AD and 12 Aβ PET-negative healthy controls (HC) (mean ± sd age 77.3 ± 6.9) as comparison. All participants underwent 3 T MRI, (11)C-PiB (Aβ) PET and (18)F-AV1451 (tau) PET. Multimodal correlation analyses were run at both voxel- and region-of-interest levels...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29159047/voxel-based-comparison-of-brain-glucose-metabolism-between-patients-with-cushing-s-disease-and-healthy-subjects
#15
Shuai Liu, Yinyan Wang, Kaibin Xu, Fan Ping, Fang Li, Renzhi Wang, Xin Cheng
Cognitive impairment and psychiatric symptoms are common in patients with Cushing's disease (CD) owing to elevated levels of glucocorticoids. Molecular neuroimaging methods may help to detect changes in the brain of patients with CD. The aim of this study was to investigate the characteristics of brain metabolism and its association with serum cortisol level in CD. We compared brain metabolism, as measured using [(18)F]-fluorodeoxyglucose positron emission tomography (FDG PET), between 92 patients with CD and 118 normal subjects on a voxel-wise basis...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29159045/identifying-functional-network-changing-patterns-in-individuals-at-clinical-high-risk-for-psychosis-and-patients-with-early-illness-schizophrenia-a-group-ica-study
#16
Yuhui Du, Susanna L Fryer, Dongdong Lin, Jing Sui, Qingbao Yu, Jiayu Chen, Barbara Stuart, Rachel L Loewy, Vince D Calhoun, Daniel H Mathalon
Although individuals at clinical high risk (CHR) for psychosis exhibit a psychosis-risk syndrome involving attenuated forms of the positive symptoms typical of schizophrenia (SZ), it remains unclear whether their resting-state brain intrinsic functional networks (INs) show attenuated or qualitatively distinct patterns of functional dysconnectivity relative to SZ patients. Based on resting-state functional magnetic imaging data from 70 healthy controls (HCs), 53 CHR individuals (among which 41 subjects were antipsychotic medication-naive), and 58 early illness SZ (ESZ) patients (among which 53 patients took antipsychotic medication) within five years of illness onset, we estimated subject-specific INs using a novel group information guided independent component analysis (GIG-ICA) and investigated group differences in INs...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29158932/gastric-and-rectal-metastases-from-malignant-melanoma-presenting-with-hypochromic-anemia-and-treated-with-immunotherapy
#17
Pietro Genova, Maria Sorce, Daniela Cabibi, Gaspare Genova, Vittorio Gebbia, Daniela Galanti, Chiara Ancona, Maria Rosaria Valerio
The authors present a case of an 80-year-old Caucasian male with multiple gastric and rectal metastases from malignant melanoma presenting with hypochromic anemia as the sole symptom of disease without evidence of cutaneous and ocular tumor localization. The patient had a medical history positive for malignant lentigo melanoma of the occipital region of the scalp and early stage laryngeal squamous cell carcinoma and prostatic carcinoma treated with radiation therapy. The authors make some considerations on intestinal involvement by metastatic melanoma and discuss the choice of not treating with endoscopic procedures the gastric metastatic lesions most likely responsible for the clinical sign present at diagnosis...
2017: Case Reports in Oncological Medicine
https://www.readbyqxmd.com/read/29158413/amyloid-polymorphisms-constitute-distinct-clouds-of-conformational-variants-in-different-etiological-subtypes-of-alzheimer-s-disease
#18
Jay Rasmussen, Jasmin Mahler, Natalie Beschorner, Stephan A Kaeser, Lisa M Häsler, Frank Baumann, Sofie Nyström, Erik Portelius, Kaj Blennow, Tammaryn Lashley, Nick C Fox, Diego Sepulveda-Falla, Markus Glatzel, Adrian L Oblak, Bernardino Ghetti, K Peter R Nilsson, Per Hammarström, Matthias Staufenbiel, Lary C Walker, Mathias Jucker
The molecular architecture of amyloids formed in vivo can be interrogated using luminescent conjugated oligothiophenes (LCOs), a unique class of amyloid dyes. When bound to amyloid, LCOs yield fluorescence emission spectra that reflect the 3D structure of the protein aggregates. Given that synthetic amyloid-β peptide (Aβ) has been shown to adopt distinct structural conformations with different biological activities, we asked whether Aβ can assume structurally and functionally distinct conformations within the brain...
November 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29158177/granger-causal-connectivity-dissociates-navigation-networks-that-subserve-allocentric-and-egocentric-path-integration
#19
Chin-Teng Lin, Te-Cheng Chiu, Yu-Kai Wang, Chun-Hsiang Chuang, Klaus Gramann
Studies on spatial navigation demonstrate a significant role of the retrosplenial complex (RSC) in the transformation of egocentric and allocentric information into complementary spatial reference frames (SRFs). The tight anatomical connections of the RSC with a wide range of other cortical regions processing spatial information support its vital role within the human navigation network. To better understand how different areas of the navigational network interact, we investigated the dynamic causal interactions of brain regions involved in solving a virtual navigation task...
November 17, 2017: Brain Research
https://www.readbyqxmd.com/read/29157936/short-parietal-lobe-connections-of-the-human-and-monkey-brain
#20
Marco Catani, Naianna Robertsson, Ahmad Beyh, Vincent Huynh, Francisco de Santiago Requejo, Henrietta Howells, Rachel L C Barrett, Marco Aiello, Carlo Cavaliere, Tim B Dyrby, Kristine Krug, Maurice Ptito, Helen D'Arceuil, Stephanie J Forkel, Flavio Dell'Acqua
The parietal lobe has a unique place in the human brain. Anatomically, it is at the crossroad between the frontal, occipital, and temporal lobes, thus providing a middle ground for multimodal sensory integration. Functionally, it supports higher cognitive functions that are characteristic of the human species, such as mathematical cognition, semantic and pragmatic aspects of language, and abstract thinking. Despite its importance, a comprehensive comparison of human and simian intraparietal networks is missing...
November 2, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
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