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https://www.readbyqxmd.com/read/28088064/improved-cognition-while-cycling-in-parkinson-s-disease-patients-and-healthy-adults
#1
Audrey A Hazamy, Lori J P Altmann, Elizabeth Stegemöller, Dawn Bowers, Hyo Keun Lee, Jonathan Wilson, Michael S Okun, Chris J Hass
Persons with Parkinson's disease (PD) are typically more susceptible than healthy adults to impaired performance when two tasks (dual task interference) are performed simultaneously. This limitation has by many experts been attributed to limitations in cognitive resources. Nearly all studies of dual task performance in PD employ walking or balance-based motor tasks, which are commonly impaired in PD. These tasks can be performed using a combination of one or two executive function tasks. The current study examined whether persons with PD would demonstrate greater dual task effects (DTEs) on cognition compared to healthy older adults (HOAs) during a concurrent cycling task...
January 11, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28087827/neuropsychological-outcome-following-frontal-lobectomy-for-pharmacoresistant-epilepsy-in-adults
#2
Robyn M Busch, Darlene P Floden, Lisa Ferguson, Shamseldeen Mahmoud, Audrina Mullane, Stephen Jones, Lara Jehi, William Bingaman, Imad M Najm
OBJECTIVE: This retrospective cohort study characterized cognitive and motor outcomes in a large sample of adults who underwent frontal lobe resections for treatment of pharmacoresistant epilepsy. METHODS: Ninety patients who underwent unilateral frontal lobe resection for epilepsy (42 language-dominant hemisphere/48 nondominant hemisphere) between 1989 and 2014 completed comprehensive preoperative and postoperative neuropsychological evaluations that included measures of verbal and nonverbal intellectual functioning, attention/working memory, processing speed, language, executive functioning, verbal and visual memory, and motor functioning...
January 13, 2017: Neurology
https://www.readbyqxmd.com/read/28080973/changes-in-interoceptive-processes-following-brain-stimulation
#3
Olga Pollatos, Beate M Herbert, Sandra Mai, Thomas Kammer
The processing and perception of individual internal bodily signals (interoception) has been differentiated to comprise different levels and processes involved. The so-called heartbeat-evoked potential (HEP) offers an additional possibility to examine automatic processing of cardiac signals. Knowledge on neural structures potentially supporting different facets of interoception is still sparse. One way to get insights into neuroanatomical function is to manipulate the activity of different brain structures...
November 19, 2016: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28079431/vagus-nerve-stimulation-in-intractable-epilepsy-associated-with-scn1a-gene-abnormalities
#4
Stephen P Fulton, Kate Van Poppel, Amy L McGregor, Basanagoud Mudigoudar, James W Wheless
Mutations in the SCN1A gene cause a spectrum of epilepsy syndromes. There are 2 syndromes that are on the severe end of this spectrum. The classic severe form, Dravet syndrome, is an epileptic encephalopathy of childhood, causing cognitive decline as well as intractable seizures. Severe Myoclonic Epilepsy of Infancy-Borderline (SMEIB) is a term used to include cases with similar severities as those with Dravet syndrome, but lacking a single feature of classic severe myoclonic epilepsy of infancy. Vagus nerve stimulation is a nonpharmacologic treatment for intractable epilepsy...
January 1, 2017: Journal of Child Neurology
https://www.readbyqxmd.com/read/28079014/predicting-cognitive-decline-across-four-decades-in-mutation-carriers-and-non-carriers-in-autosomal-dominant-alzheimer-s-disease
#5
Ove Almkvist, Elena Rodriguez-Vieitez, Steinunn Thordardottir, Kaarina Amberla, Karin Axelman, Hans Basun, Anne Kinhult-Ståhlbom, Lena Lilius, Anne Remes, Lars-Olof Wahlund, Matti Viitanen, Lars Lannfelt, Caroline Graff
OBJECTIVES: The aim of this study was to investigate cognitive performance including preclinical and clinical disease course in carriers and non-carriers of autosomal-dominant Alzheimer's disease (adAD) in relation to multiple predictors, that is, linear and non-linear estimates of years to expected clinical onset of disease, years of education and age. METHODS: Participants from five families with early-onset autosomal-dominant mutations (Swedish and Arctic APP, PSEN1 M146V, H163Y, and I143T) included 35 carriers (28 without dementia and 7 with) and 44 non-carriers...
January 12, 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/28078310/polg2-deficiency-causes-adult-onset-syndromic-sensory-neuropathy-ataxia-and-parkinsonism
#6
Lionel Van Maldergem, Arnaud Besse, Boel De Paepe, Emma L Blakely, Vivek Appadurai, Margaret M Humble, Juliette Piard, Kate Craig, Langping He, Pierre Hella, François-Guillaume Debray, Jean-Jacques Martin, Marion Gaussen, Patrice Laloux, Giovanni Stevanin, Rudy Van Coster, Robert W Taylor, William C Copeland, Eric Mormont, Penelope E Bonnen
OBJECTIVE: Mitochondrial dysfunction plays a key role in the pathophysiology of neurodegenerative disorders such as ataxia and Parkinson's disease. We describe an extended Belgian pedigree where seven individuals presented with adult-onset cerebellar ataxia, axonal peripheral ataxic neuropathy, and tremor, in variable combination with parkinsonism, seizures, cognitive decline, and ophthalmoplegia. We sought to identify the underlying molecular etiology and characterize the mitochondrial pathophysiology of this neurological syndrome...
January 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/28076362/temporal-dependency-and-the-structure-of-early-looking
#7
Daniel S Messinger, Whitney I Mattson, James Torrence Todd, Devon N Gangi, Nicholas D Myers, Lorraine E Bahrick
Although looking time is used to assess infant perceptual and cognitive processing, little is known about the temporal structure of infant looking. To shed light on this temporal structure, 127 three-month-olds were assessed in an infant-controlled habituation procedure and presented with a pre-recorded display of a woman addressing the infant using infant-directed speech. Previous individual look durations positively predicted subsequent look durations over a six look window, suggesting a temporal dependency between successive infant looks...
2017: PloS One
https://www.readbyqxmd.com/read/28075382/b-vitamin-intake-and-biomarker-status-in-relation-to-cognitive-decline-in-healthy-older-adults-in-a-4-year-follow-up-study
#8
Catherine F Hughes, Mary Ward, Fergal Tracey, Leane Hoey, Anne M Molloy, Kristina Pentieva, Helene McNulty
Advancing age can be associated with an increase in cognitive dysfunction, a spectrum of disability that ranges in severity from mild cognitive impairment to dementia. Folate and the other B-vitamins involved in one-carbon metabolism are associated with cognition in ageing but the evidence is not entirely clear. The hypothesis addressed in this study was that lower dietary intake or biomarker status of folate and/or the metabolically related B-vitamins would be associated with a greater than expected rate of cognitive decline over a 4-year follow-up period in healthy older adults...
January 10, 2017: Nutrients
https://www.readbyqxmd.com/read/28073935/brain-structure-and-function-associated-with-younger-adults-in-growth-hormone-receptor-deficient-humans
#9
Kaoru Nashiro, Jaime Guevara-Aguirre, Meredith N Braskie, George W Hafzalla, Rico Velasco, Priya Balasubramian, Min Wei, Paul M Thompson, Mara Mather, Marvin D Nelson, Alexandra Guevara, Enrique Teran, Valter D Longo
: Growth hormone receptor deficiency (GHRD) results in short stature, enhanced insulin sensitivity, and low circulating levels of insulin and insulin-like growth factor 1 (IGF-1). Previous studies in mice and humans suggested that GHRD has protective effects against age-related diseases, including cancer and diabetes. Whereas GHRD mice show improved age-dependent cognitive performance, the effect of GHRD on human cognition remains unknown. Using magnetic resonance imaging (MRI), we compared brain structure, function, and connectivity between 13 people with GHRD and 12 unaffected relatives...
January 10, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28073355/factors-associated-with-improvement-or-decline-in-cognitive-function-after-an-ischemic-stroke-in-korea-the-korean-stroke-cohort-for-functioning-and-rehabilitation-kosco-study
#10
Jin A Yoon, Deog Young Kim, Min Kyun Sohn, Jongmin Lee, Sam-Gyu Lee, Yang-Soo Lee, Eun Young Han, Min Cheol Joo, Gyung-Jae Oh, Junhee Han, Minsu Park, Kyung Pil Park, Kyung-Ha Noh, Won Hyuk Chang, Yong-Il Shin, Yun-Hee Kim
BACKGROUND: We conducted a prospective cohort study to investigate prevalence of poststroke cognitive impairment at 3 and 12 months after stroke onset and identify clinical and demographic factors associated with improvement or decline in cognitive function between 3 months and 12 months. METHODS: We analyzed the cognitive assessments of total patients and patients older than 65 years separately. All patients with an ischemic stroke were divided into normal cognitive group (NCG) and impaired cognition group (ICG) by using a cutoff score on the Korean Mini-Mental State Examination (K-MMSE)...
January 10, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28072503/posttraumatic-stress-disorder-symptoms-and-cognitive-function-in-a-large-cohort-of-middle-aged-women
#11
Jennifer A Sumner, Kaitlin Hagan, Fran Grodstein, Andrea L Roberts, Brian Harel, Karestan C Koenen
BACKGROUND: Posttraumatic stress disorder (PTSD) has been linked to cognitive decline, but research in women is generally lacking. We examined whether trauma and elevated PTSD symptoms were associated with worse cognitive function in middle-aged civilian women. A secondary objective was to investigate the possible role of depression in the relation of PTSD symptoms to cognitive function. METHODS: The sample comprised 14,029 middle-aged women in the Nurses' Health Study II...
January 10, 2017: Depression and Anxiety
https://www.readbyqxmd.com/read/28071922/anxiety-symptoms-and-risk-of-dementia-and-mild-cognitive-impairment-in-the-oldest-old-women
#12
Ahmed M Kassem, Mary Ganguli, Kristine Yaffe, Joseph T Hanlon, Oscar L Lopez, John W Wilson, Kristine Ensrud, Jane A Cauley
OBJECTIVES: Research is limited and findings conflict regarding anxiety as a predictor of future cognitive decline in the oldest old persons. We examined the relationship between levels of and changes in anxiety symptoms, and subsequent dementia and mild cognitive impairment (MCI) in the oldest old women. METHOD: We conducted secondary analyses of data collected from 1425 community-dwelling women (mean age = 82.8, SD ±3.1 years) followed on average for five years...
January 10, 2017: Aging & Mental Health
https://www.readbyqxmd.com/read/28067961/quality-of-life-in-relation-to-neuropsychiatric-symptoms-in-alzheimer-s-disease-5-year-prospective-alsova-cohort-study
#13
Kristiina Hongisto, Ilona Hallikainen, Tuomas Selander, Soili Törmälehto, Saku Väätäinen, Janne Martikainen, Tarja Välimäki, Sirpa Hartikainen, Jaana Suhonen, Anne M Koivisto
OBJECTIVE: To examine the association between neuropsychiatric symptoms (NPS) with self- and caregiver-rated Quality of Life (QoL) for patients with Alzheimer's disease (AD) during a 5-year follow-up. METHODS: The ALSOVA 5-year follow-up study included, at baseline, 236 patients with either very mild (Clinical Dementia Rating Scale (CDR) 0.5), or mild (CDR 1) AD, together with their caregivers from three Finnish hospital districts. QoL was evaluated using patient self-reported, and caregiver-rated, QoL in AD (QoL-AD) scores...
January 9, 2017: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28065206/iowa-gambling-task-performance-prospectively-predicts-changes-in-glycemic-control-among-adolescents-with-type-1-diabetes
#14
Yana Suchy, Tara L Queen, Bryce Huntbach, Deborah J Wiebe, Sara L Turner, Jonathan Butner, Caitlin S Kelly, Perrin C White, Mary Murray, Michael Swinyard, Cynthia A Berg
OBJECTIVES: Good glycemic control is an important goal of diabetes management. Late adolescents with type 1 diabetes (T1D) are at risk for poor glycemic control as they move into young adulthood. For a subset of these patients, this dysregulation is extreme, placing them at risk for life-threatening health complications and permanent cognitive declines. The present study examined whether deficiency in emotional decision making (as measured by the Iowa Gambling Task; IGT) among teens with T1D may represent a neurocognitive risk factor for subsequent glycemic dysregulation...
January 9, 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/28064175/neuroimaging-of-inflammation-in-memory-and-related-other-disorders-nimrod-study-protocol-a-deep-phenotyping-cohort-study-of-the-role-of-brain-inflammation-in-dementia-depression-and-other-neurological-illnesses
#15
W Richard Bevan-Jones, Ajenthan Surendranathan, Luca Passamonti, Patricia Vázquez Rodríguez, Robert Arnold, Elijah Mak, Li Su, Jonathan P Coles, Tim D Fryer, Young T Hong, Guy Williams, Franklin Aigbirhio, James B Rowe, John T O'Brien
INTRODUCTION: Inflammation of the central nervous system is increasingly regarded as having a role in cognitive disorders such as dementia and depression, but it is not clear how such inflammation relates to other aspects of neuropathology, structural and functional changes in the brain and symptoms (as assessed via clinical and neuropsychological assessment and MRI). This study will explore these pathophysiological mechanisms using positron emission tomography (PET) which allows in vivo imaging of inflammation, amyloid and τ deposition, together with neuropsychological profiling, MRI and peripheral biomarker analysis...
January 7, 2017: BMJ Open
https://www.readbyqxmd.com/read/28063945/calcineurin-inhibitors-improve-memory-loss-and-neuropathological-changes-in-mouse-model-of-dementia
#16
Amit Kumar, Nirmal Singh
AIM: The present study was designed to investigate the potential of Cyclosporine (CsA) and Tacrolimus, the inhibitors of calcineurin (CaN) in cognitive deficits of mice. METHODS: Streptozotocin [STZ, 3mg/kg, injected intracerebroventricular (i.c.v.)] was used to induce memory deficits in NIH mice, while aged mice separately taken served as a natural model of dementia. Morris water maze (MWM) test was employed to evaluate learning and memory of the animals. A battery of biochemical and histopathological studies was also performed...
January 4, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28063852/gait-speed-and-processing-speed-as-clinical-markers-for-geriatric-health-outcomes
#17
Joost B Sanders, Marijke A Bremmer, Hannie C Comijs, Peter M van de Ven, Dorly J H Deeg, Aartjan T F Beekman
OBJECTIVE: This study investigates the independent and combined potential of slowed gait speed and slowed processing speed as predictors of adverse health outcomes. The role of depressive symptoms in these associations is also investigated. METHODS: In the prospective cohort study, using the Longitudinal Aging Study Amsterdam database, three study samples for each outcome variable were defined: persistent cognitive decline (PCD; N = 1,271, 13 years of follow-up), falls (N = 1,282, 6 years of follow-up), and mortality (N = 1,559, age 74...
December 6, 2016: American Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28062257/liraglutide-prevents-cognitive-decline-in-a-rat-model-of-streptozotocin-induced-diabetes-independently-from-its-peripheral-metabolic-effects
#18
Caterina Palleria, Antonio Leo, Francesco Andreozzi, Rita Citraro, Michelangelo Iannone, Rosangela Spiga, Giorgio Sesti, Andrew Constanti, Giovambattista De Sarro, Franco Arturi, Emilio Russo
Diabetes has been identified as a risk factor for cognitive dysfunctions. Glucagone like peptide 1 (GLP-1) receptor agonists have neuroprotective effects in preclinical animal models. We evaluated the effects of GLP-1 receptor agonist, liraglutide (LIR), on cognitive decline associated with diabetes. Furthermore, we studied LIR effects against hippocampal neurodegeneration induced by streptozotocin (STZ), a well-validated animal model of diabetes and neurodegeneration associated with cognitive decline. Diabetes and/or cognitive decline were induced in Wistar rats by intraperitoneal or intracerebroventricular injection of STZ and then rats were treated with LIR (300μg/kg daily subcutaneously) for 6 weeks...
January 3, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28061418/memory-and-mood-outcomes-after-anterior-thalamic-stimulation-for-refractory-partial-epilepsy
#19
Alexander I Tröster, Kimford J Meador, Christopher P Irwin, Robert S Fisher
PURPOSE: Bilateral deep brain stimulation (DBS) of the anterior nucleus of the thalamus (ANT) reduces seizures and is relatively safe but may be accompanied by complaints of memory problems and depression. This study examined incidence of memory and depression adverse events (AE) in the SANTE study blinded phase and their relationship to objective neurobehavioral measures, baseline characteristics, quality of life and long-term neurobehavioral outcome. METHOD: The neurobehavioral AE and neuropsychological data from a previously reported prospective randomized trial (SANTE) were analyzed...
December 23, 2016: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28059789/the-mild-behavioral-impairment-checklist%C3%A2-mbi-c-a-rating-scale-for%C3%A2-neuropsychiatric-symptoms-in%C3%A2-pre-dementia-populations
#20
Zahinoor Ismail, Luis Agüera-Ortiz, Henry Brodaty, Alicja Cieslak, Jeffrey Cummings, Corinne E Fischer, Serge Gauthier, Yonas E Geda, Nathan Herrmann, Jamila Kanji, Krista L Lanctôt, David S Miller, Moyra E Mortby, Chiadi U Onyike, Paul B Rosenberg, Eric E Smith, Gwenn S Smith, David L Sultzer, Constantine Lyketsos
BACKGROUND: Mild behavioral impairment (MBI) is a construct that describes the emergence at ≥50 years of age of sustained and impactful neuropsychiatric symptoms (NPS), as a precursor to cognitive decline and dementia. MBI describes NPS of any severity, which are not captured by traditional psychiatric nosology, persist for at least 6 months, and occur in advance of or in concert with mild cognitive impairment. While the detection and description of MBI has been operationalized in the International Society to Advance Alzheimer's Research and Treatment - Alzheimer's Association (ISTAART-AA) research diagnostic criteria, there is no instrument that accurately reflects MBI as described...
December 3, 2017: Journal of Alzheimer's Disease: JAD
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