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https://www.readbyqxmd.com/read/29040971/characteristics-and-outcomes-of-vertebrobasilar-artery-dissection-with-accompanied-atherosclerosis
#1
Chun Chien, Feng-Chi Chang, Hui-Chi Huang, Jui-Yao Tsai, Chih-Ping Chung
BACKGROUND: With the popularity of MRI use, vertebrobasilar artery dissection (VBD) has been found more frequently in patients with posterior circulation ischemic stroke (PCS). The relationship between VBD and atherosclerosis is unknown. The present study aimed to prove the hypothesis that PCS with pure VBD (p-VBD) and with VBD and accompanied cervical or cerebral artery atherosclerosis (a-VBD) have distinct manifestations. METHODS: Patients with VBD-related PCS who were prospectively enrolled in the Taipei Veterans General Hospital Stroke Registry between January 1, 2010 and August 31, 2014 were recruited for the present study...
October 17, 2017: Cerebrovascular Diseases Extra
https://www.readbyqxmd.com/read/29040762/effects-of-schizophrenia-polygenic-risk-scores-on-brain-activity-and-performance-during-working-memory-subprocesses-in-healthy-young-adults
#2
Jacob A Miller, Matthew A Scult, Emily Drabant Conley, Qiang Chen, Daniel R Weinberger, Ahmad R Hariri
Recent work has begun to shed light on the neural correlates and possible mechanisms of polygenic risk for schizophrenia. Here, we map a schizophrenia polygenic risk profile score (PRS) based on genome-wide association study significant loci onto variability in the activity and functional connectivity of a frontoparietal network supporting the manipulation versus maintenance of information during a numerical working memory (WM) task in healthy young adults (n = 99, mean age = 19.8). Our analyses revealed that higher PRS was associated with hypoactivity of the dorsolateral prefrontal cortex (dlPFC) during the manipulation but not maintenance of information in WM (r2 = ...
October 12, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/29040647/brain-capillary-ultrastructure-in-idiopathic-normal-pressure-hydrocephalus-relationship-with-static-and-pulsatile-intracranial-pressure
#3
Vigdis Andersen Eidsvaag, Hans-Arne Hansson, Kjell Heuser, Erlend A Nagelhus, Per K Eide
Idiopathic normal pressure hydrocephalus (iNPH) is a neurodegenerative disease of unknown cause. We investigated the morphology of capillaries in frontal cortex biopsies from iNPH patients and related the observations to overnight intracranial pressure (ICP) scores. A biopsy (0.9×10 mm) was taken from where the ICP sensor subsequently was inserted. Brain capillaries were investigated by electron microscopy of biopsies from 27 iNPH patients and 10 reference subjects, i.e. patients (not healthy individuals) without cerebrospinal fluid circulation disturbances, in whom normal brain tissue was removed as part of necessary neurosurgical treatment...
October 10, 2017: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/29040247/use-of-ondansetron-for-vomiting-after-head-trauma-does-it-mask-clinically-significant-traumatic-brain-injury
#4
Israel Green-Hopkins, Michael C Monuteaux, Lois Lee, Lise Nigrovic, Rebekah Mannix, Sara Schutzman
OBJECTIVES: We describe ondansetron use in children with head injury evaluated in pediatric emergency departments and its association with return visits and late diagnoses of intracranial injuries requiring intervention. METHODS: Children ages 6 months to 18 years discharged without neuroimaging from 35 pediatric emergency departments with a diagnosis of head injury from 2009 to 2013 were identified retrospectively from the Pediatric Health Information System. We evaluated the rates of ondansetron use during the study period and of the association of ondansetron treatment with the diagnosis of intracranial injury, skull fracture, and return visits within 72 hours requiring admission or operative intervention...
October 16, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29036854/functional-repertoire-of-interleukin-6-in-the-central-nervous-system-a-review
#5
Klaus Heese
In an aging society with dementia imposing an increasing threat to higher brain cognitive functions, understanding the molecular and cellular events of adult neurogenesis is imperative. Interleukin-6 (IL-6), along with its agonistic acting soluble receptor sIL-6R (the combined proteins are also known as Hyper-IL-6), is a promising cytokine that can support neurogenesis under conditions of neurodegeneration when neuron replacement is needed. In contrast to the previously reported gliogenic effects of activation of the IL-6-signal transducer and activator of transcription 3 (STAT3) axis, this review summarizes recent studies showing that IL-6 activation can be neurogenic and has potential therapeutic applications for the treatment of neurodegenerative diseases such as Parkinson's disease...
October 9, 2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/29036832/neuropathological-comparison-of-adult-onset-and-juvenile-huntington-s-disease-with-cerebellar-atrophy-a-report-of%C3%A2-a%C3%A2-father-and-son
#6
Caitlin S Latimer, Margaret E Flanagan, Patrick J Cimino, Suman Jayadev, Marie Davis, Zachary S Hoffer, Thomas J Montine, Luis F Gonzalez-Cuyar, Thomas D Bird, C Dirk Keene
BACKGROUND: Huntington's disease (HD) is an autosomal dominant neurodegenerative disease caused by a trinucleotide (CAG) repeat expansion in huntingtin (HTT) on chromosome 4. Anticipation can cause longer repeat expansions in children of HD patients. Juvenile Huntington's disease (JHD), defined as HD arising before age 20, accounts for 5-10% of HD cases, with cases arising in the first decade accounting for approximately 1%. Clinically, JHD differs from the predominately choreiform adult onset Huntington's disease (AOHD) with variable presentations, including symptoms such as myoclonus, seizures, Parkinsonism, and cognitive decline...
October 11, 2017: Journal of Huntington's Disease
https://www.readbyqxmd.com/read/29036824/alzheimer-s-disease-biomarkers-and-future-decline-in-cognitive-normal-older-adults
#7
Julien Dumurgier, Bernard J Hanseeuw, Frances B Hatling, Kelly A Judge, Aaron P Schultz, Jasmeer P Chhatwal, Deborah Blacker, Reisa A Sperling, Keith A Johnson, Bradley T Hyman, Teresa Gómez-Isla
BACKGROUND: Identifying older adults at risk of cognitive decline represents a challenge as Alzheimer's disease (AD) modifying therapies move toward preclinical stages. OBJECTIVE: To investigate the relationship between AD biomarkers and subsequent change in cognition in a cohort of cognitively intact older adults. METHODS: 84 cognitively normal subjects (mean age 72.0 years, 59% women) were recruited through the Massachusetts Alzheimer's Disease Research Center and the Harvard Aging Brain Study and followed over 3 years...
October 12, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29036822/cortical-cerebral-microinfarcts-on-3-tesla-mri-in-patients-with-vascular-cognitive-impairment
#8
Doeschka A Ferro, Susanne J van Veluw, Huiberdina L Koek, Lieza G Exalto, Geert Jan Biessels
BACKGROUND: Cerebral microinfarcts (CMIs) are small ischemic lesions that are a common neuropathological finding in patients with stroke or dementia. CMIs in the cortex can now be detected in vivo on 3 Tesla MRI. OBJECTIVE: To determine the occurrence of CMIs and associated clinical features in patients with possible vascular cognitive impairment (VCI). METHOD: 182 memory-clinic patients (mean age 71.4±10.6, 55% male) with vascular injury on brain MRI (i...
October 12, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29036816/sex-difference-in-aerobic-exercise-efficacy-to-improve-cognition-in-older-adults-with-vascular-cognitive-impairment-secondary-analysis-of-a-randomized-controlled-trial
#9
Cindy K Barha, Ging-Yuek R Hsiung, John R Best, Jennifer C Davis, Janice J Eng, Claudia Jacova, Philip E Lee, Michelle Munkacsy, Winnie Cheung, Teresa Liu-Ambrose
Aerobic training (AT) is a promising, non-pharmacological intervention to mitigate the deleterious effects of aging and disease on brain health. However, a large amount of variation exists in its efficacy. This is a secondary analysis of a randomized controlled trial of AT in 71 older adults with subcortical ischemic vascular cognitive impairment (NCT01027858). Specifically, we investigated: 1) whether sex moderates the relationship between AT and executive functions, and 2) the role of brain derived neurotrophic factor (BDNF) and gains in functional fitness capacity...
October 12, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29036812/altered-gut-microbiota-in-a-mouse-model-of-alzheimer-s-disease
#10
Ling Zhang, Ying Wang, Xia Xiayu, Changhua Shi, Wei Chen, Nan Song, Xinjing Fu, Rui Zhou, Yan-Feng Xu, Lan Huang, Hua Zhu, Yunlin Han, Chuan Qin
The topic of gut microbiota is currently attracting considerable interest as a potential factor in Alzheimer's disease (AD). However, the extent and time course of alterations in the gut microbiota, and their effects on AD pathology remain uncertain. Herein, we compared the fecal microbiomes and fecal short chain fatty acid composition (SCFAs) between wild-type and AD model mice at different ages under strictly controlled specific pathogen free conditions, and also conducted microscopic investigations of intestinal structures...
October 7, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29036811/sildenafil-improves-vascular-and-metabolic-function-in-patients-with-alzheimer-s-disease
#11
Min Sheng, Hanzhang Lu, Peiying Liu, Yang Li, Harshan Ravi, Shin-Lei Peng, Ramon Diaz-Arrastia, Michael D Devous, Kyle B Womack
BACKGROUND: Alzheimer's disease (AD) is the leading cause of degenerative dementia in the aging population. Patients with AD have alterations in cerebral hemodynamic function including reduced cerebral blood flow (CBF) and cerebral metabolic rate. Therefore, improved cerebrovascular function may be an attractive goal for pharmaceutical intervention in AD. OBJECTIVE: We wished to observe the acute effects of sildenafil on cerebrovascular function and brain metabolism in patients with AD...
October 7, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29036697/the-elderly-left-behind-changes-in-survival-trends-of-primary-central-nervous-system-lymphoma-over-the-past-four-decades
#12
Joe S Mendez, Quinn T Ostrom, Haley Gittleman, Carol Kruchko, Lisa M DeAngelis, Jill S Barnholtz-Sloan, Christian Grommes
Background: There has been significant improvement in treatment outcomes of Primary Central Nervous System Lymphoma (PCNSL) at specialized centers over the past several decades; however, it is unclear if these changes have translated to benefits in the general population. Methods: In this study, we utilized two national databases to examine survival trends over time for PCNSL (Central Brain Tumor Registry of the United States (CBTRUS, 2000 - 2013) and 18 Surveillance, Epidemiology, and End Results (SEER, 1973 - 2013) registries)...
October 3, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/29036680/factors-associated-with-opioid-initiation-in-oef-oif-ond-veterans-with-traumatic-brain-injury
#13
Teresa J Hudson, Jacob T Painter, Laura E Gressler, Liya Lu, J Silas Williams, Brenda M Booth, Bradley C Martin, Mark D Sullivan, Mark J Edlund
Objective: These analyses examined opioid initiation and chronic use among Iraq (OIF) and Afghanistan (OEF/OND) veterans with a new diagnosis of traumatic brain injury (TBI) in the Veterans Health Administration (VHA). Methods: Data were obtained from national VHA data repositories. Analyses included OEF/OIF/OND veterans with a new TBI diagnosis in 2010-2012 who used the VHA at least twice, had not received a VHA opioid prescription in the 365 days before diagnosis, and had at least 365 days of data available after TBI diagnosis...
September 26, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/29036636/genetic-reduction-of-nrf2-exacerbates-cognitive-deficits-in-a-mouse-model-of-alzheimer-s-disease
#14
Caterina Branca, Eric Ferreira, Thuy-Vi Nguyen, Kristian Doyle, Antonella Caccamo, Salvatore Oddo
Aging is the major risk factor for several neurodegenerative diseases, including Alzheimer's disease (AD). However, the mechanisms by which aging contributes to neurodegeneration remain elusive. The nuclear factor (erythroid-derived 2)-like 2 (Nrf2) is a transcription factor that regulates expression of a vast number of genes by binding to the antioxidant response element. Nrf2 levels decrease as a function of age, and reduced Nrf2 levels have been reported in postmortem human brains and animal models of AD...
September 19, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/29036600/brain-cancer-cluster-investigation-around-a-factory-emitting-dichloromethane
#15
Konstantinos C Makris, Michael Voniatis
Background: The health risks associated with dichloromethane (DCM) for the general population living near industrial activities have not yet been quantified, primarily due to lack of epidemiological datasets. In the absence of such human data, we undertook a cancer cluster investigation in Cyprus around a historically using DCM plant producing shoe soles that were globally exported. We designed the methodology to investigate the possible existence of a cancer cluster in the area around the factory (point zero) and within a radius of 500 meters...
October 4, 2017: European Journal of Public Health
https://www.readbyqxmd.com/read/29036432/copb2-is-essential-for-embryogenesis-and-hypomorphic-mutations-cause-human-microcephaly
#16
Andrew DiStasio, Ashley Driver, Kristen Sund, Milene Donlin, Ranjith M Muraleedharan, Shabnam Pooya, Beth Kline-Fath, Kenneth M Kaufman, Cynthia A Prows, Elizabeth Schorry, Biplab DasGupta, Rolf W Stottmann
Primary microcephaly is a congenital brain malformation characterized by a head circumference less than three standard deviations below the mean for age and sex and results in moderate to severe mental deficiencies and decreased lifespan. We recently studied two children with primary microcephaly in an otherwise unaffected family. Exome sequencing identified an autosomal recessive mutation leading to an amino acid substitution in a WD40 domain of the highly conserved Coatomer Protein Complex, Subunit Beta 2 (COPB2)...
September 19, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/29035751/intercellular-transfer-of-pathogenic-%C3%AE-synuclein-by-extracellular-vesicles-is-induced-by-the-lipid-peroxidation-product-4-hydroxynonenal
#17
Shi Zhang, Erez Eitan, Tsung-Yu Wu, Mark P Mattson
Parkinson's disease (PD) is characterized by accumulations of toxic α-synuclein aggregates in vulnerable neuronal populations in the brainstem, midbrain, and cerebral cortex. Recent findings suggest that α-synuclein pathology can be propagated transneuronally, but the underlying molecular mechanisms are unknown. Advances in the genetics of rare early-onset familial PD indicate that increased production and/or reduced autophagic clearance of α-synuclein can cause PD. The cause of the most common late-onset PD is unclear, but may involve metabolic compromise and oxidative stress upstream of α-synuclein accumulation...
September 22, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/29035692/the-development-of-chronic-physical-aggression-a-bio-psycho-social-model-for-the-next-generation-of-preventive-interventions
#18
Richard E Tremblay, Frank Vitaro, Sylvana M Côté
This review describes a bio-psycho-social approach to understanding and preventing the development of chronic physical aggression. The debate on the developmental origins of aggression has historically opposed genetic and environmental mechanisms. Recent studies have shown that the frequency of physical aggression peaks in early childhood and then decreases until old age. Molecular genetic studies and twin studies have confirmed important genetic influences. However, recent epigenetic studies have highlighted the important role of environments in gene expression and brain development...
October 16, 2017: Annual Review of Psychology
https://www.readbyqxmd.com/read/29035459/level-of-platelet-distribution-width-and-outcome-prediction-in-patients-with-traumatic-brain-injury
#19
Biao Zhang, Jianjun Gu, Yizhen Qiu, Jin Zhao, Yi Song, Huojun Jiang, Aliang Ding, Xiaoqi Chen, Rongming Yu, Guofang Liu, Aihao Hu
BACKGROUND: This study examines the clinical utility of the level of increased platelet distribution width (PDW) as a predictor of outcome in patients with traumatic brain injury. METHODS: In this retrospective study, 120 patients with traumatic brain injury (TBI) were recruited. Age, gender, PDW, and Glasgow Coma Scale (GCS) scores were measured. These patients were divided into two groups based on their 30-day outcomes. Receiver operating curves (ROCs) were generated to identify predictors of 30-day mortality...
October 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/29035302/oligoarticular-hemarthroses-and-osteomyelitis-complicating-pasteurella-meningitis-in-an-infant
#20
Charles Nathan Nessle, Allison K Black, Justin Farge, Victoria A Statler
A 5-month-old previously healthy female presented with a one-week history of fever and increased fussiness. Her presentation revealed an ill-appearing infant with an exam and cerebrospinal fluid (CSF) studies concerning bacterial meningitis; CSF cultures grew Pasteurella multocida. Additionally, brain magnetic resonance imaging (MRI) demonstrated cervical osteomyelitis. Despite multiple days of antibiotic therapy, she remained febrile with continued pain; MRI showed oligoarticular effusions, and aspiration of these joints yielded bloody aspirates...
October 16, 2017: Children
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