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https://www.readbyqxmd.com/read/28227769/identifying-the-effects-of-visceral-interoception-on-human-brain-connectome-a-multivariate-analysis-of-covariance-of-fmri-data
#1
Behnaz Jarrahi, Dante Mantini, Behnaz Jarrahi, Dante Mantini, Behnaz Jarrahi, Dante Mantini
Sources of variations in the neural circuitry of the human brain and interrelationship between intrinsic connectivity networks (ICNs) are still a matter of debate and ongoing research. Here, we applied a multivariate analysis of covariance (MANCOVA) based on high-dimensional independent component analysis (ICA) to identify the effects of interoception and related variables on human brain connectome. Fifteen healthy right-handed subjects (all females, age range 21 - 48 years; mean age = 30.3, SD = 8.7 years) underwent a blood-oxygen-level-dependent (BOLD) functional magnetic resonance imaging (fMRI) that included continuous intravesical saline infusion and drainage...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227768/measures-of-the-brain-functional-network-that-correlate-with-alzheimer-s-neuropsychological-test-scores-an-fmri-and-graph-analysis-study
#2
Soroosh Golbabaei, Amin Dadashi, Hamid Soltanian-Zadeh, Soroosh Golbabaei, Amin Dadashi, Hamid Soltanian-Zadeh, Soroosh Golbabaei, Amin Dadashi, Hamid Soltanian-Zadeh
Neural degeneration in Alzheimer's disease (AD) leads to structural topology deformation that in turn changes brain functionality. The main aim of the present study is to find the brain's functional connectivity network (FCN) correlates of Alzheimer's psychological test scores. To this end, the brain's FCN is extracted from the resting state functional magnetic resonance images (rs-fMRI) of healthy controls and patients with AD and represented as a graph. Then, network measures are calculated from the graphs...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225493/acetylcholinesterase-inhibitor-treatment-alleviated-cognitive-impairment-caused-by-delayed-encephalopathy-due-to-carbon-monoxide-poisoning-two-case-reports-and-a-review-of-the-literature
#3
Kumi Yanagiha, Kazuhiro Ishii, Akira Tamaoka
INTRODUCTION: Delayed encephalopathy due to carbon monoxide (CO) poisoning can even occur in patients with mild symptoms of acute CO poisoning. Some cases taking conventional hyperbaric oxygen (HBO) therapy or steroid-pulse therapy may be insufficient, and AchEI may be effective. PATIENT CONCERNS AND DIAGNOSES: We report two cases of delayed encephalopathy after acute CO poisoning involving two women aged 69 (Case 1) and 60 years (Case 2) whose cognitive function improved with acetylcholinesterase inhibitor (AchEI) treatment...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28213192/trans-frontal-sinus-subcranial-approach-to-olfactory-groove-meningiomas-surgical-results-clinical-and-functional-outcome-in-a-consecutive-series-of-21-patients
#4
Lina Raffaella Barzaghi, Alfio Spina, Filippo Gagliardi, Nicola Boari, Pietro Mortini
BACKGROUND: The trans-frontal-sinus-subcranial approach (TFSSA) allows for direct exposure and removal of olfactory groove meningiomas (OGMs), without any brain retraction. Compared to other skull base approaches (like fronto-orbito-basal, transbasal, subcranial, fronto-orbito-zygomatic and one-and-half approach), it could offer the same advantages but it is less invasive. OBJECT: We report the results in a series of 21 consecutive patients harboring OGMs and operated through TFSSA, in order to propose a viable alternative approach...
February 14, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28212570/altered-amygdala-and-hippocampus-effective-connectivity-in-mild-cognitive-impairment-patients-with-depression-a-resting-state-functional-mr-imaging-study-with-granger-causality-analysis
#5
Li Juan Zheng, Gui Fen Yang, Xin Yuan Zhang, Yun Fei Wang, Ya Liu, Gang Zheng, Guang Ming Lu, Long Jiang Zhang, Ying Han
Neuroimaging studies have demonstrated that the major depression disorder would increase the risk of dementia in the older with amnestic cognitive impairment. We used granger causality analysis algorithm to explore the amygdala- and hippocampus-based directional connectivity patterns in 12 patients with major depression disorder and amnestic cognitive impairment (mean age: 69.5 ± 10.3 years), 13 amnestic cognitive impairment patients (mean age: 72.7 ± 8.5 years) and 14 healthy controls (mean age: 64.7 ± 7...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28211008/injected-amyloid-beta-in-the-olfactory-bulb-transfers-to-other-brain-regions-via-neural-connections-in-mice
#6
Baixuan He, Minying Zheng, Qiang Liu, Zhe Shi, Simei Long, Xilin Lu, Zhong Pei, Ti-Fei Yuan, Huanxing Su, Xiaoli Yao
Alzheimer's disease (AD) is characterized by progressive neuronal degeneration and pathological accumulation of amyloid plaques in the brain. It has been proposed that the prion-like spreading of amyloid beta (Aβ) protein could contribute to the progression of the disease. Olfactory bulb (OB) is one of the earliest brain regions affected in AD and olfaction is easily impaired prior to cognitive symptoms. However, it remains unclear whether Aβ accumulation in the OB would spread along olfactory projections to other connected brain regions and trigger further neurodegeneration...
February 16, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28210220/mri-based-classification-models-in-prediction-of-mild-cognitive-impairment-and-dementia-in-late-life-depression
#7
Aleksandra K Lebedeva, Eric Westman, Tom Borza, Mona K Beyer, Knut Engedal, Dag Aarsland, Geir Selbaek, Asta K Haberg
Objective: Late-life depression (LLD) is associated with development of different types of dementia. Identification of LLD patients, who will develop cognitive decline, i.e., the early stage of dementia would help to implement interventions earlier. The purpose of this study was to assess whether structural brain magnetic resonance imaging (MRI) in LLD patients can predict mild cognitive impairment (MCI) or dementia 1 year prior to the diagnosis. Methods: LLD patients underwent brain MRI at baseline and repeated clinical assessment after 1-year...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28186867/significant-improvement-in-cognition-in-mild-to-moderately-severe-dementia-cases-treated-with-transcranial-plus-intranasal-photobiomodulation-case-series-report
#8
Anita E Saltmarche, Margaret A Naeser, Kai Fai Ho, Michael R Hamblin, Lew Lim
OBJECTIVE: This study investigated whether patients with mild to moderately severe dementia or possible Alzheimer's disease (AD) with Mini-Mental State Exam (MMSE) Baseline scores of 10-24 would improve when treated with near-infrared photobiomodulation (PBM) therapy. BACKGROUND: Animal studies have presented the potential of PBM for AD. Dysregulation of the brain's default mode network (DMN) has been associated with AD, presenting the DMN as an identifiable target for PBM...
February 10, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28180219/super-resolution-imaging-of-alpha-synuclein-polymorphisms-and-their-potential-role-in-neurodegeneration
#9
REVIEW
Eileen Nugent, Clemens F Kaminski, Gabriele S Kaminski Schierle
The conversion of soluble, functional proteins into amyloid fibrils has been linked to the development of neurodegenerative disorders, including Parkinson's and Alzheimer's disease. In the brains of patients with these disorders, the increasing presence of amyloid-containing plaques corresponds to neuronal cell death and the worsening of symptoms. However, protein amyloids are not merely confined to dying cells. Rather, some show a propensity to be transmitted to, and enter adjacent cells and induce the polymerization of the native monomer population...
February 9, 2017: Integrative Biology: Quantitative Biosciences From Nano to Macro
https://www.readbyqxmd.com/read/28176536/kinase-targets-in-cns-drug-discovery
#10
Hendra Gunosewoyo, Lifang Yu, Lenka Munoz, Michael Kassiou
Originally thought to be nondruggable, kinases represent attractive drug targets for pharmaceutical companies and academia. To date, there are over 40 kinase inhibitors approved by the US FDA, with 32 of these being small molecules, in addition to the three mammalian target of rapamycin inhibitor macrolides (sirolimus, temsirolimus and everolimus). Despite the rapid development of kinase inhibitors for cancer, presently none of these agents are approved for CNS indications. This mini perspective highlights selected kinase targets for CNS disorders, of which brain-permeable small-molecule inhibitors are reported, with demonstrated preclinical proof-of-concept efficacy...
February 8, 2017: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/28165615/brain-mri-markers-associate-differentially-with-cognitive-versus-functional-decline-leading-to-dementia
#11
Vincentius J A Verlinden, Jos N van der Geest, Albert Hofman, Wiro J Niessen, Aad van der Lugt, Meike W Vernooij, M Arfan Ikram
BACKGROUND: Brain MRI-markers are risk factors of dementia and decline in cognition and daily functioning. It is unknown to what extent the associations of brain MRI-markers with cognition and daily functioning are part of the pathway leading to dementia. We aimed to investigate associations of brain MRI-markers with change in cognition and daily functioning during 15 years of follow-up, including their relation to dementia. DESIGN, SETTING, AND PARTICIPANTS: Four hundred and sixty three stroke-free and non-demented participants from the population-based Rotterdam Study that underwent brain-MRI, yielding brain volumetrics, between 1995 and 1996...
February 6, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28163060/an-insight-into-the-vision-impairment-following-traumatic-brain-injury
#12
REVIEW
Nilkantha Sen
Traumatic brain injury (TBI) is one of the major cause of morbidity and mortality and it affects more than 1.7 million Americans each year. Depending on its location and severity, TBI leads to structural and functional damage in several parts of the brain such as cranial nerves, optic nerve tract or other circuitry involved in vision, and occipital lobe. As a result, the function associated with vision processing and perception are significantly affected and cause blurred vision, double vision, decreased peripheral vision and blindness...
February 2, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28161319/biophysical-and-neural-basis-of-resting-state-functional-connectivity-evidence-from-non-human-primates
#13
REVIEW
Li Min Chen, Pai-Feng Yang, Feng Wang, Arabinda Mishra, Zhaoyue Shi, Ruiqi Wu, Tung-Lin Wu, George H Wilson, Zhaohua Ding, John C Gore
Functional MRI (fMRI) has evolved from simple observations of regional changes in MRI signals caused by cortical activity induced by a task or stimulus, to task-free acquisitions of images in a resting state. Such resting state signals contain low frequency fluctuations which may be correlated between voxels, and strongly correlated regions are deemed to reflect functional connectivity within synchronized circuits. Resting state functional connectivity (rsFC) measures have been widely adopted by the neuroscience community, and are being used and interpreted as indicators of intrinsic neural circuits and their functional states in a broad range of applications, both basic and clinical...
February 2, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28156673/palliative-whole-brain-radiotherapy-predictors-of-prescribing-5-versus-10-fractions
#14
Sarah Baker, Kim Paulson, Brock J Debenham, Sunita Ghosh, David L Ma, Fleur Huang, Karen P Chu, Diane Severin, John Amanie, Tirath Nijjar, Samir Patel, Ericka Wiebe, Brita Lavender Danielson, Bronwen LeGuerrier, Alysa M Fairchild
: 219 Background: The optimal dose for palliative whole brain radiotherapy (WBRT) continues to be debated. Common regimens include 20 Gy in five and 30 Gy in 10 fractions. We aimed to identify factors associated with WBRT dose schedules, hypothesizing that clinical prediction of survival (CPS) would influence prescribing practice. METHODS: Demographic and clinicopathologic data were collected for consecutive patients with brain metastases receiving WBRT through a dedicated palliative radiation oncology clinic...
October 9, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28156249/utility-of-mri-based-disproportionately-enlarged-subarachnoid-space-hydrocephalus-scoring-for-predicting-prognosis-after-surgery-for-idiopathic-normal-pressure-hydrocephalus-clinical-research
#15
Narihide Shinoda, Osamu Hirai, Shinya Hori, Kazuyuki Mikami, Toshiaki Bando, Daisuke Shimo, Takahiro Kuroyama, Yoji Kuramoto, Masato Matsumoto, Yasushi Ueno
OBJECTIVE The presence of disproportionately enlarged subarachnoid space hydrocephalus (DESH) on brain imaging is a recognized finding of idiopathic normal pressure hydrocephalus (iNPH), but the features of DESH can vary across patients. The aim of this study was to evaluate the utility of MRI-based DESH scoring for predicting prognosis after surgery. METHODS In this single-center, retrospective cohort study, the DESH score was determined by consensus between a group of neurosurgeons, neurologists, and a neuroradiologist based on the preoperative MRI findings of the patients with suspected iNPH...
February 3, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28154341/predictive-factors-for-long-term-outcome-of-subthalamic-nucleus-deep-brain-stimulation-for-parkinson-s-disease
#16
Chikashi Fukaya, Mitsuru Watanabe, Kazutaka Kobayashi, Hideki Oshima, Atsuo Yoshino, Takamitsu Yamamoto
Despite the recognition of the usefulness of subthalamic nucleus deep brain stimulation (STN-DBS) for the treatment of Parkinson's disease (PD), preoperative predictive factors for the long-term outcome of STN-DBS are not sufficiently established. We performed this study to determine such predictive factors. The subjects were 66 patients who were classified into two groups on the basis of their activities of daily living (ADL) evaluated five years after the STN-DBS surgery: 33 patients were assigned to the independent ADL group (group I) and the remaining 33 patients to the dependent ADL group (group D)...
January 31, 2017: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/28151589/from-blast-to-bench-a-translational-mini-review-of-posttraumatic-headache
#17
REVIEW
Laura S Moye, Amynah A Pradhan
Current events within the military and professional sports have resulted in an increased recognition of the long-term and debilitating consequences of traumatic brain injury. Mild traumatic brain injury accounts for the majority of head injuries, and posttraumatic headache is the most common adverse effect. It is estimated that between 30% to 90% of traumatic brain injuries result in posttraumatic headache, and for a significant number of people this headache disorder can continue for up to and over a year post injury...
February 2, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28151002/lack-of-associations-between-modifiable-risk-factors-and-dementia-in-the-very-old-findings-from-the-cambridge-city-over-75s-cohort-study
#18
Kay Deckers, Sebastian Köhler, Martin van Boxtel, Frans Verhey, Carol Brayne, Jane Fleming
OBJECTIVES: To investigate the association between modifiable risk and protective factors and severe cognitive impairment and dementia in the very old. Additionally, the present study tests the predictive validity of the 'LIfestyle for BRAin health' (LIBRA) score, an index developed to assess an individual's dementia prevention potential. METHOD: Two hundred seventy-eight individuals aged 85 years or older from the Cambridge City over-75s cohort study were followed-up until death...
February 2, 2017: Aging & Mental Health
https://www.readbyqxmd.com/read/28150221/the-association-between-brain-derived-neurotrophic-factor-gene-polymorphism-and-migraine-a-meta-analysis
#19
REVIEW
Xiaoying Cai, Xiaolei Shi, Ximeng Zhang, Aiwu Zhang, Minying Zheng, Yannan Fang
BACKGROUND: Migraine is a recurrent headache disease related to genetic variants. The brain-derived neurotrophic factor (BDNF) gene rs6265 (Val66Met) and rs2049046 polymorphism has been found to be associated with migraine. However, their roles in this disorder are not well established. Then we conduct this meta-analysis to address this issue. METHODS: PubMed, Web of Science and Cochrane databases were systematically searched to identify all relevant studies. Odds ratio (OR) with corresponding 95% confidence interval (CI) was used to estimate the strength of association between BDNF gene rs6265 and rs2049046 polymorphism and migraine...
December 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/28143721/zebrafish-and-relational-memory-could-a-simple-fish-be-useful-for-the-analysis-of-biological-mechanisms-of-complex-vertebrate-learning
#20
REVIEW
Robert Gerlai
Analysis of the zebrafish allows one to combine two distinct scientific approaches, comparative ethology and neurobehavioral genetics. Furthermore, this species arguably represents an optimal compromise between system complexity and practical simplicity. This mini-review focuses on a complex form of learning, relational learning and memory, in zebrafish. It argues that zebrafish are capable of this type of learning, and it attempts to show how this species may be useful in the analysis of the mechanisms and the evolution of this complex brain function...
January 28, 2017: Behavioural Processes
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