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https://www.readbyqxmd.com/read/29456489/hurst-exponent-analysis-of-resting-state-fmri-signal-complexity-across-the-adult-lifespan
#1
Jianxin Dong, Bin Jing, Xiangyu Ma, Han Liu, Xiao Mo, Haiyun Li
Exploring functional information among various brain regions across time enables understanding of healthy aging process and holds great promise for age-related brain disease diagnosis. This paper proposed a method to explore fractal complexity of the resting-state functional magnetic resonance imaging (rs-fMRI) signal in the human brain across the adult lifespan using Hurst exponent (HE). We took advantage of the examined rs-fMRI data from 116 adults 19 to 85 years of age (44.3 ± 19.4 years, 49 females) from NKI/Rockland sample...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29456127/neurocognitive-disorder-in-hypertensive-patients-heart-brain-study
#2
A Vicario, G H Cerezo, M Del Sueldo, J Zilberman, S M Pawluk, N Lódolo, A E De Cerchio, R M Ruffa, R Plunkett, M E Giuliano, P Forcada, S Hauad, R Flores
The relation between hypertension and cognitive impairment is an undisputable fact. The aims of this study were to determine the prevalence of cognitive impairment in hypertensive patients, to identify the most affected cognitive domain, and to observe the association with different parameters of hypertension and other vascular risk factors. A multicentre study was carried out, and 1281 hypertensive patients of both genders and ≥21 years of age were included. Data on the following parameters were obtained: cognitive status (Minimal Cognitive Examination), behavioural status (Hospital Anxiety and Depression Scale), blood pressure, anthropometry, and biochemical profile...
February 15, 2018: Hipertensión y Riesgo Vascular
https://www.readbyqxmd.com/read/29455710/the-following-abstracts-were-presented-as-posters-at-the-2017-nei-congress
#3
(no author information available yet)
Congratulations to the scientific poster winners: 1 st Place: #178-Gender Differences in Prodromal Symptoms of Dementia 2 nd Place: #146-Effect of Heroin Use on Changes of Brain Functions As Measured by fMRI, a Systematic Review 3 rd Place: #185-Second Generation Antipsychotics and Catatonia: A Literature Review.
February 2018: CNS Spectrums
https://www.readbyqxmd.com/read/29455216/demographic-and-histopathological-patterns-of-neuro-epithelial-brain-tumors-in-eastern-province-of-saudi-arabia
#4
Mahmoud S Taha, Fahad M Almsned, Mohammed A Hassen, Ibrahim M Atean, Ahmed M Alwbari, Qasim K Alharbi, Marwah M Abdulkader, Husam S Almuhaish
OBJECTIVE: To review the demographic and pathological pattern of neuro-epithelial brain tumors in a tertiary referral center in the Eastern Province of Saudi Arabia and to compare the results of our study with other national and international studies. METHODS: This is a retrospective chart-review study of all patients with neuro-epithelial brain tumors referred and treated in our center between January 2010 and January 2015. The age, gender, tumor location, and histopathology were recorded...
January 2018: Neurosciences: the Official Journal of the Pan Arab Union of Neurological Sciences
https://www.readbyqxmd.com/read/29453736/reproductive-epidemiology-of-glial-tumors-may-reveal-novel-treatments-high-dose-progestins-or-progesterone-antagonists-as-endocrino-immune-modifiers-against-glioma
#5
REVIEW
Meric A Altinoz, Aysel Ozpinar, Ilhan Elmaci
Female gender, contraceptives, and menopausal hormone replacement treatments containing progesterone analogues associate with higher risk of meningiomas yet with lower risk of gliomas. Progesterone receptor (PR) expression and mifepristone treatment was highly discussed for meningiomas. However, much less is known in regard to progesterone actions in gliomas despite PR expression strongly correlates with their grade. Meningiomas and gliomas may grow faster during gestation; but paradoxically, parousity reduces lifetime risk of gliomas which can be explained with dichotomous cell growth-stimulating and inhibitory actions of progesterone at low versus high levels...
February 17, 2018: Neurosurgical Review
https://www.readbyqxmd.com/read/29452906/extracranial-arterial-wall-volume-is-increased-and-shows-relationships-with-vascular-mri-measures-in-idiopathic-parkinson-s-disease
#6
Stephen Ball, Sarah Al-Bachari, Laura M Parkes, Hedley C A Emsley, Charles N McCollum
OBJECTIVE: Idiopathic Parkinson's disease (IPD) is the second most common neurodegenerative disorder, often complicated by dementia. Cardiovascular risk factors and spontaneous cerebral emboli (SCE) are strongly associated with Alzheimer's (AD) and vascular dementia (VaD). We measured SCE in the middle cerebral artery and arterial wall volume in the extracranial arteries in patients with IPD and controls, and explored the relationships with structural and physiological MRI brain neurovascular measures...
February 10, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29451323/-18f-av-1451-tau-pet-and-primary-progressive-aphasia
#7
Keith A Josephs, Peter R Martin, Hugo Botha, Christopher G Schwarz, Joseph R Duffy, Heather M Clark, Mary M Machulda, Jonathan Graff-Radford, Stephen D Weigand, Matthew L Senjem, Rene L Utianski, Daniel A Drubach, Bradley F Boeve, David T Jones, David S Knopman, Ronald C Petersen, Clifford R Jack, Val J Lowe, Jennifer L Whitwell
OBJECTIVES: To assess [ 18 F]AV-1451 tau-PET uptake patterns across the primary progressive aphasia (PPA) variants (logopenic, semantic and agrammatic), examine regional uptake patterns of [ 18 F]AV-1451 independent of clinical diagnosis, and compare the diagnostic utility of [ 18 F]AV-1451, [ 18 F]-fluorodeoxygluclose (FDG)-PET and MRI to differentiate the PPA variants. METHODS: We performed statistical parametric mapping of [ 18 F]AV-1451 across 40 PPA patients (logopenic-PPA=14, semantic-PPA=13 and agrammatic-PPA=13) compared to 80 cognitively normal, PiB-negative controls, age and gender matched 2:1...
February 16, 2018: Annals of Neurology
https://www.readbyqxmd.com/read/29449515/-therapeutic-effects-of-low-dose-bevacizumab-for-the-treatment-of-recurrent-brain-metastases
#8
Etsuko Hattori, Akinori Miyakoshi, Kohichi Go, Toshiharu Aotake, Yoshiyuki Kawakami, Masato Sakamoto, Takeshi Kawauchi, Yuuki Oichi, Noritaka Sano, Makoto Hayase, Makoto Ohta, Yuki Hirose, Hiroki Toda
OBJECTIVE: Molecularly targeted therapy has been adopted to treat a number of cancers. Bevacizumab, a recombinant humanized monoclonal antibody against vascular endothelial growth factor, is a representative agent used in molecularly targeted therapeutic regimens. However, the therapeutic effect of bevacizumab for the treatment of brain metastases remains unknown. We report the clinical effects of low dose bevacizumab(≤2.5mg/kg/week)to treat recurrent brain metastases. METHODS: We retrospectively analyzed patients with brain metastases who had been treated with bevacizumab between 2012 and 2016 at our institution...
February 2018: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/29447256/modulation-of-neural-circuits-underlying-temporal-production-by-facial-expressions-of-pain
#9
Daniela Ballotta, Fausta Lui, Carlo Adolfo Porro, Paolo Frigio Nichelli, Francesca Benuzzi
According to the Scalar Expectancy Theory, humans are equipped with a biological internal clock, possibly modulated by attention and arousal. Both emotions and pain are arousing and can absorb attentional resources, thus causing distortions of temporal perception. The aims of the present single-event fMRI study were to investigate: a) whether observation of facial expressions of pain interferes with time production; and b) the neural network subserving this kind of temporal distortions. Thirty healthy volunteers took part in the study...
2018: PloS One
https://www.readbyqxmd.com/read/29446659/association-analysis-of-the-brain-derived-neurotrophic-factor-gene-val66met-polymorphism-and-gender-with-efficacy-of-antidepressants-in-the-chinese-han-population-with-generalized-anxiety-disorder
#10
Min Lin, Jianying Zhu, Yonggui Yuan, Lie Ren, Mincai Qian, Zhongxia Shen, Yongliang Shao, Xinhua Shen
BACKGROUND AND AIM: This study was designed to explore the relationship between the brain-derived neurotrophic factor (BDNF) Val66Met polymorphism and antidepressants' efficacy in the Chinese Han population with generalized anxiety disorder (GAD). MATERIALS AND METHODS: We recruited 206 patients who met the diagnostic criteria for GAD into the test group, and assigned 209 healthy participants to the control group. All participants were genotyped for the BDNF Val66Met polymorphism...
February 15, 2018: Genetic Testing and Molecular Biomarkers
https://www.readbyqxmd.com/read/29442128/semantic-imaging-features-predict-disease-progression-and-survival-in-glioblastoma-multiforme-patients
#11
Jan C Peeken, Josefine Hesse, Bernhard Haller, Kerstin A Kessel, Fridtjof Nüsslin, Stephanie E Combs
BACKGROUND: For glioblastoma (GBM), multiple prognostic factors have been identified. Semantic imaging features were shown to be predictive for survival prediction. No similar data have been generated for the prediction of progression. The aim of this study was to assess the predictive value of the semantic visually accessable REMBRANDT [repository for molecular brain neoplasia data] images (VASARI) imaging feature set for progression and survival, and the creation of joint prognostic models in combination with clinical and pathological information...
February 13, 2018: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/29439354/effects-of-gender-and-other-confounding-factors-on-leptin-concentrations-in-alzheimer-s-disease-evidence-from-the-combined-analysis-of-27-case-control-studies
#12
Futao Zhou, Shuangrong Chen
Leptin, as a link between fat mass and the brain, has been reported to be associated with gender. The gender differences in leptin levels between Alzheimer's disease (AD) and healthy elderly controls are inconclusive so far. To quantitatively summarize the leptin data available from female and male patients with AD, we searched PubMed and EMBASE for articles published from inception to July 20, 2017. Data were extracted from 27 studies, consisting of 3,014 participants. The pooled results showed that the overall leptin levels were lower in AD (Hedges' g = -0...
2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29439335/abnormalities-of-resting-state-cortical-eeg-rhythms-in-subjects-with-mild-cognitive-impairment-due-to-alzheimer-s-and-lewy-body-diseases
#13
Claudio Babiloni, Claudio Del Percio, Roberta Lizio, Giuseppe Noce, Susanna Lopez, Andrea Soricelli, Raffaele Ferri, Maria Teresa Pascarelli, Valentina Catania, Flavio Nobili, Dario Arnaldi, Francesco Famà, Dag Aarsland, Francesco Orzi, Carla Buttinelli, Franco Giubilei, Marco Onofrj, Fabrizio Stocchi, Laura Vacca, Paola Stirpe, Peter Fuhr, Ute Gschwandtner, Gerhard Ransmayr, Heinrich Garn, Lucia Fraioli, Michela Pievani, Giovanni B Frisoni, Fabrizia D'Antonio, Carlo De Lena, Bahar Güntekin, Lutfu Hanoğlu, Erol Başar, Görsev Yener, Derya Durusu Emek-Savaş, Antonio Ivano Triggiani, Raffaella Franciotti, John Paul Taylor, Maria Francesca De Pandis, Laura Bonanni
The present study tested the hypothesis that cortical sources of resting state eyes-closed electroencephalographic (rsEEG) rhythms reveal different abnormalities in cortical neural synchronization in groups of patients with mild cognitive impairment due to Alzheimer's disease (ADMCI) and dementia with Lewy bodies (DLBMCI) as compared to cognitively normal elderly (Nold) subjects. Clinical and rsEEG data in 30 ADMCI, 23 DLBMCI, and 30 Nold subjects were available in an international archive. Age, gender, and education were carefully matched in the three groups...
2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29439251/low-cerebral-oxygenation-is-associated-with-cognitive-impairment-in-chronic-hemodialysis-patients
#14
Lucie Kovarova, Anna Valerianova, Tereza Kmentova, Jana Lachmanova, Zuzana Hladinova, Jan Malik
BACKGROUND/AIMS: High rates of cognitive impairment (CI) are an alarming problem in patients undergoing chronic hemodialysis (HD). Its pathophysiology remains unclear and there are indications that brain ischemia might be one of the key causes. Cerebral tissue oxygenation, as measured by near-infrared spectroscopy, is known to be decreased in HD patients. However, it is unknown whether CI is associated or not associated with lower cerebral oxygenation in these patients. The primary aim of our study was to probe this possible association...
February 13, 2018: Nephron
https://www.readbyqxmd.com/read/29438791/necessity-of-repeat-ct-imaging-in-isolated-mild-traumatic-subarachnoid-hemorrhage
#15
Ashwath Kumar, Anthony Alvarado, Kushal Shah, Paul M Arnold
BACKGROUND: The standard of care for isolated mild traumatic subarachnoid hemorrhage (itSAH) involves serial head CT examinations at dedicated time-intervals to monitor neurologic status and hemorrhagic progression. Considering recent evidence questioning such an aggressive monitoring protocol, this study aimed to assess the necessity of repeat head CT imaging in managing itSAH. METHODS: All patients who presented to our academic institution with mild traumatic brain injury were evaluated...
February 10, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29436061/anterior-insular-volume-decrease-is-associated-with-dysfunction-of-the-reward-system-in-patients-with-chronic-pain
#16
E Ikeda, T Li, H Kobinata, S Zhang, J Kurata
BACKGROUND: Chronification of pain is associated with both anatomical and functional alterations of the brain. Alteration in regional gray matter volume might potentially be associated with modified activity of specific brain networks. In this cross-sectional, observational study, we sought to identify brain regions with gray matter volume changes in patients with chronic pain and to reveal its significance by analysing alteration in functional connectivity from those regions. We further explored relevance of such alterations with psychometrics of chronic pain...
February 13, 2018: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/29434543/altered-functional-connectivity-of-fronto-cingulo-striatal-circuits-during-error-monitoring-in-adolescents-with-a-history-of-childhood-abuse
#17
Heledd Hart, Lena Lim, Mitul A Mehta, Charles Curtis, Xiaohui Xu, Gerome Breen, Andrew Simmons, Kah Mirza, Katya Rubia
Childhood maltreatment is associated with error hypersensitivity. We examined the effect of childhood abuse and abuse-by-gene ( 5-HTTLPR, MAOA ) interaction on functional brain connectivity during error processing in medication/drug-free adolescents. Functional connectivity was compared, using generalized psychophysiological interaction (gPPI) analysis of functional magnetic resonance imaging (fMRI) data, between 22 age- and gender-matched medication-naïve and substance abuse-free adolescents exposed to severe childhood abuse and 27 healthy controls, while they performed an individually adjusted tracking stop-signal task, designed to elicit 50% inhibition failures...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29433020/radio-frequency-radiation-related-cancer-assessing-causation-in-the-occupational-military-setting
#18
Michael Peleg, Or Nativ, Elihu D Richter
BACKGROUND AND AIM: We reexamine whether radio frequency radiation (RFR) in the occupational and military settings is a human carcinogen. METHODS: We extended an analysis of an already-reported case series of patients with cancer previously exposed to whole-body prolonged RFR, mainly from communication equipment and radar. We focused on hematolymphatic (HL) cancers. We used analysis by percentage frequency (PF) of a cancer type, which is the proportion of a specific cancer type relative to the total number of cancer cases...
February 9, 2018: Environmental Research
https://www.readbyqxmd.com/read/29428497/pleural-effusions-in-acute-decompensated-heart-failure-prevalence-and-prognostic-implications
#19
José Luis Morales-Rull, Silvia Bielsa, Alicia Conde-Martel, Oscar Aramburu-Bodas, Pau Llàcer, Miguel Angel Quesada, Iván Suárez-Pedreira, Luis Manzano, Manuel Montero-Pérez Barquero, José M Porcel
BACKGROUND: The incidence of pleural effusions (PEs) in acute decompensated heart failure (ADHF) is not well established. We aimed to determine their prevalence, clinical characteristics and prognostic implications. METHODS: Retrospective review of 3245 consecutive patients with ADHF from the Spanish RICA Registry. The clinical characteristics of those with or without PEs on chest radiographs were compared and a predictive PE model was generated. RESULTS: Patient's median age was 80 years and 60% had a left ventricular ejection fraction (LVEF) >50%...
February 7, 2018: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/29426683/cardiothoracic-mri-in-the-icu-a-10-year-experience
#20
Narmadan Kumarasamy, Nima Tishbi, Shey Mukundan, Ariel Shiloh, Jeffrey M Levsky, Linda B Haramati
RATIONALE AND OBJECTIVE: The objective of this study was to identify the feasibility and pitfalls of cardiothoracic magnetic resonance imaging (MRI) in intensive care unit (ICU) patients. MATERIALS AND METHODS: This retrospective study identified adult ICU patients scheduled for cardiothoracic MRIs during a 10-year study period. ICU patients scheduled for brain MRIs served as a comparison group. A chart review was performed to identify factors impacting a patient's ability to undergo an MRI...
February 6, 2018: Academic Radiology
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