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https://www.readbyqxmd.com/read/29777165/hiv-1-proteins-dysregulate-motivational-processes-and-dopamine-circuitry
#1
Sarah J Bertrand, Charles F Mactutus, Steven B Harrod, Landhing M Moran, Rosemarie M Booze
Motivational alterations, such as apathy, in HIV-1+ individuals are associated with decreased performance on tasks involving frontal-subcortical circuitry. We used the HIV-1 transgenic (Tg) rat to assess effect of long-term HIV-1 protein exposure on motivated behavior using sucrose (1-30%, w/v) and cocaine (0.01-1.0 mg/kg/infusion) maintained responding with fixed-ratio (FR) and progressive-ratio (PR) schedules of reinforcement. For sucrose-reinforced responding, HIV-1 Tg rats displayed no change in EC50 relative to controls, suggesting no change in sucrose reinforcement but had a downward shifted concentration-response curves, suggesting a decrease in response vigor...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29773145/pathological-and-molecular-characterization-of-systemic-isosporosis-atoxoplasmosis-in-captive-green-winged-saltator-saltator-similis
#2
Ayisa Rodrigues de Oliveira, Tayse Domingues de Souza, Juliana P S Mol, Mayra Cunha Flecher, Emy Hiura, Renato Lima Santos
Systemic isosporosis, also called atoxoplasmosis or visceral coccidiosis, is a disease that affects birds in general. Pathogenesis of systemic isosporosis and its etiologic agent have not been well characterized, but taxonomically Atoxoplasma is currently considered a junior objective synonym of Isospora. The present report aimed to describe pathological and molecular findings of systemic isosporosis in captive green-winged saltators (Saltator similis) from the State of Espírito Santo, Brazil. In a commercial breeding facility eleven birds with two to nine months of age died from 2015 to 2016...
May 15, 2018: Veterinary Parasitology
https://www.readbyqxmd.com/read/29770363/the-multifaceted-clinical-presentation-of-vcp-proteinopathy-in-a-greek-family
#3
George K Papadimas, George P Paraskevas, Thomas Zambelis, Chrisostomos Karagiaouris, Mara Bourbouli, Anastasia Bougea, Maggie C Walter, Nicolas U Schumacher, Sabine Krause, Elisabeth Kapaki
VCP-proteinopathy is a multisystem neurodegenerative disorder caused by mutations in valosin containing protein. Here, we report the first Greek case of VCP-proteinopathy in a 62 year old patient with a slowly progressing muscular weakness since his mid-40s and a severe deterioration during the last year. He also manifested dementia with prominent neuropsychiatric symptoms, including aggression, apathy, palilalia and obsessions. Brain MRI revealed frontal atrophy, while muscle MRI showed diffuse muscle atrophy...
December 2017: Acta Myologica: Myopathies and Cardiomyopathies: Official Journal of the Mediterranean Society of Myology
https://www.readbyqxmd.com/read/29762648/a-new-framework-for-conceptualizing-symptoms-in-frontotemporal-dementia-from-animal-models-to-the-clinic
#4
Stephanie Wong, Bernard W Balleine, Fiona Kumfor
Behavioural-variant frontotemporal dementia is characterized by a number of ostensibly disparate clinical features, which have largely been considered independently. This Update proposes an integrated conceptual framework for these symptoms, by bringing together findings from animal studies, functional neuroimaging and behavioural neurology. The combined evidence indicates that many of the clinical symptoms--such as altered eating behaviour; overspending and susceptibility to scams; reduced empathy and socially inappropriate behaviour; apathy and stereotyped/ritualistic behaviour--can be conceptualized as a common underlying deficiency in goal-directed behaviour and the concomitant emergence of habits...
May 11, 2018: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29755713/a-mobile-multimedia-reminiscence-therapy-application-to-reduce-behavioral-and-psychological-symptoms-in-persons-with-alzheimer-s
#5
Danish Imtiaz, Arshia Khan, Adriana Seelye
The goal of this project is to develop a novel and innovative mobile solution to address behavioral and psychological symptoms of dementia (BPSD) that occur in individuals with Alzheimer's. BPSD can include agitation, restlessness, aggression, apathy, obsessive-compulsive and repetitive behaviors, hallucinations, delusions, paranoia, and wandering. Alzheimer's currently affects 5.4 million adults in the United States and that number is projected to increase to 14 million by 2050. Almost 90% of all affected with AD experience BPSD, resulting in increased healthcare costs, heavier burden on caregivers, poor patient outcomes, early nursing home placement, long-term hospitalizations, and misuse of medications...
2018: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29753049/antidepressant-effects-of-creatine-on-amyloid-%C3%AE-1-40-treated-mice-the-role-of-gsk-3%C3%AE-nrf-2-pathway
#6
Julia M Rosa, Francis L Pazini, Mauricio P Cunha, André R S Colla, Luana M Manosso, Gianni Mancini, Ana Cristina G Souza, Andreza F de Bem, Rui Daniel Prediger, Ana Lúcia S Rodrigues
Alzheimer's disease (AD) is characterized by progressive synaptic dysfunction and neuronal lost in specific brain areas including hippocampus, resulting in memory/learning deficits and cognitive impairments. In addition, non-cognitive symptoms are reported in AD patients, such as anxiety, apathy and depressed mood. The current antidepressant drugs present reduced efficacy to improve depressive symptoms in AD patients. Here, we investigated the ability of creatine, a compound with neuroprotective and antidepressant properties, to counteract amyloid β1-40 peptide-induced depressive-like behavior in mice...
May 9, 2018: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/29748110/interoceptive-processing-deficit-a-behavioral-marker-for-subtyping-parkinson-s-disease
#7
Gabriella Santangelo, Carmine Vitale, Chiara Baiano, Alfonsina D'Iorio, Katia Longo, Paolo Barone, Marianna Amboni, Massimiliano Conson
BACKGROUND: Non-motor symptoms in Parkinson's disease (PD), such as cognitive, emotional, autonomic and somatosensory alterations, are not ubiquitous but vary between the tremor dominant (TD) and postural instability/gait difficulty (PIGD) subtypes of the syndrome. Non-motor phenomena (e.g., anxiety, depression and apathy) have been related to representation of autonomic and somatosensory sensations (interoception), and recent findings suggest interoceptive deficits in PD. OBJECTIVES: To test whether interoceptive processing is differently affected in TD and PIGD phenotypes, by assessing both interoceptive accuracy and sensibility in PD patients with TD and PIGD subtypes, and in healthy controls...
May 5, 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29736421/exquisite-response-to-intravenous-immunoglobulin-in-susac-syndrome-during-pregnancy
#8
Enrique Gomez-Figueroa, Sofia Garcia-Trejo, Raul Anwar Garcia-Santos, Gerardo Quiñones-Pesqueira, Juan Manuel Calleja-Castillo
Introduction: From its initial report on two female patients in 1979 by J.O. Susac, Susac syndrome (SuS) or SICRET (small infarctions of cochlear, retinal and encephalic tissue) has persisted as an elusive entity. To date the available evidence for its treatment is based on case reports and case series. The largest systematic review described only 304 reported cases since the 1970s. Here we presented the first reported case to our knowledge in Mexican population and the unusual presentation in a pregnant patient...
March 2018: ENeurologicalSci
https://www.readbyqxmd.com/read/29734988/change-in-cognition-and-other-non-motor-symptoms-with-obstructive-sleep-apnea-treatment-in-parkinson-disease
#9
Marta Kaminska, Victoria P Mery, Anne-Louise Lafontaine, Ann Robinson, Andrea Benedetti, Priti Gros, R John Kimoff
STUDY OBJECTIVES: Parkinson disease (PD) non-motor symptoms are associated with sleep disorders and impair quality of life. Our objective was to assess the effect of obstructive sleep apnea (OSA) treatment using continuous positive airway pressure (CPAP) on PD non-motor symptoms. METHODS: In this prospective observational study, 67 patients with idiopathic PD underwent polysomnography. Those with moderate-severe OSA were offered CPAP therapy. Subjects were divided into those without OSA (OSA-), and those with OSA (OSA+)...
April 30, 2018: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/29728937/psychometric-properties-of-the-italian-version-of-the-cognitive-reserve-scale-i-crs
#10
Manuela Altieri, Mattia Siciliano, Simona Pappacena, María Dolores Roldán-Tapia, Luigi Trojano, Gabriella Santangelo
The original definition of cognitive reserve (CR) refers to the individual differences in cognitive performance after a brain damage or pathology. Several proxies were proposed to evaluate CR (education, occupational attainment, premorbid IQ, leisure activities). Recently, some scales were developed to measure CR taking into account several cognitively stimulating activities. The aim of this study is to adapt the Cognitive Reserve Scale (I-CRS) for the Italian population and to explore its psychometric properties...
May 4, 2018: Neurological Sciences
https://www.readbyqxmd.com/read/29727467/pharmacological-interventions-for-apathy-in-alzheimer-s-disease
#11
REVIEW
Myuri T Ruthirakuhan, Nathan Herrmann, Eleenor H Abraham, Sarah Chan, Krista L Lanctôt
BACKGROUND: Despite the high prevalence of apathy in Alzheimer's disease (AD), and its harmful effects, there are currently no therapies proven to treat this symptom. Recently, a number of pharmacological therapies have been investigated as potential treatments for apathy in AD. OBJECTIVES: Objective 1: To assess the safety and efficacy of pharmacotherapies for the treatment of apathy in Alzheimer's disease (AD).Objective 2: To assess the effect on apathy of pharmacotherapies investigated for other primary outcomes in the treatment of AD...
May 4, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29724875/unusual-case-of-anti-n-methyl-d-aspartic-acid-receptor-nmda-r-encephalitis-and-autoimmune-polyglandular-syndrome-aps
#12
Simona Frunza-Stefan, Hilary B Whitlatch, Gautam G Rao, Rana Malek
Anti-N-methyl-D-aspartic acid-receptor (NMDA-R) encephalitis is a novel disease discovered within the past 10 years. It is an autoimmune disease (AD) that has been associated with other ADs, such as Graves' disease. However, association with autoimmune polyglandular syndromes (APS) has not been previously described. A 58-year-old woman presented with altered mental status and an 8-month history of weight loss, apathy and somnolence. Laboratory evaluation confirmed Graves' disease with thyrotoxicosis and type 1 diabetes mellitus...
May 2, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29720798/mercury-toxicity-following-unauthorized-siddha-medicine-intake-a-mimicker-of-acquired-neuromyotonia-report-of-32-cases
#13
G Gnanashanmugam, R Balakrishnan, S P Somasundaram, N Parimalam, P Rajmohan, M B Pranesh
Context: Mercury is used extensively in the preparation of Siddha medicines, after purification. In this study, we present 32 patients of mercury toxicity following unauthorized Siddha medicine intake who mimicked neuromyotonia clinically. We analyzed the clinical features of these patients, the role of autoimmunity in etiopathology, and compared it with acquired neuromyotonia. Subjects and Methods: This is a retrospective study to analyze inpatients in a tertiary care center, admitted with mercury toxicity following Siddha medicine intake from August 2012 to October 2016...
January 2018: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/29710717/behavioral-and-neuropsychiatric-disorders-in-alzheimer-s-disease
#14
Nicole Cortés, Víctor Andrade, Ricardo B Maccioni
Alzheimer's disease (AD) is the most frequent type of dementia in the elderly, severely affecting functional and executive skills of subjects suffering from this disease. Moreover, the distress of caregivers as well as the social implications constitute a critical issue for families. Furthermore, cognitive impairment, along with behavioral disorders and neuropsychiatric symptoms are characteristics of AD. Although these are present with variations in prevalence, intensity, and progression, an important core of them is visible before cognitive impairment, especially depression and apathy, which affect at least 50% of patients...
April 25, 2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29710716/brain-inflammation-connects-cognitive-and-non-cognitive-symptoms-in-alzheimer-s-disease
#15
M Clara Selles, Mauricio M Oliveira, Sergio T Ferreira
Alzheimer's disease (AD) is the main form of dementia in the elderly and affects greater than 47 million people worldwide. Care for AD patients poses very significant personal and economic demands on individuals and society, and the situation is expected to get even more dramatic in the coming decades unless effective treatments are found to halt the progression of the disease. Although AD is most commonly regarded as a disease of the memory, the entire brain is eventually affected by neuronal dysfunction or neurodegeneration, which brings about a host of other behavioral disturbances...
April 25, 2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29708208/apathy-and-functional-disability-in-behavioral-variant-frontotemporal-dementia
#16
Mônica S Yassuda, Thais B Lima da Silva, Claire M O'Connor, Shailaja Mekala, Suvarna Alladi, Valeria S Bahia, Viviane Almaral-Carvalho, Henrique C Guimaraes, Paulo Caramelli, Marcio L F Balthazar, Benito Damasceno, Sonia M D Brucki, Ricardo Nitrini, John R Hodges, Olivier Piguet, Eneida Mioshi
Background: Behavioral variant frontotemporal dementia (bvFTD) has profound consequences on patients and their families. In this multicenter study, we investigated the contribution of cognitive and neuropsychiatric factors to everyday function at different levels of overall functional impairment. Methods: In a retrospective cross-sectional study, 109 patients with bvFTD from 4 specialist frontotemporal dementia centers (Australia, England, India, and Brazil) were included...
April 2018: Neurology. Clinical Practice
https://www.readbyqxmd.com/read/29706886/lower-choline-and-myo-inositol-in-temporo-parietal-cortex-is-associated-with-apathy-in-amnestic-mci
#17
Shankar Tumati, Esther M Opmeer, Jan-Bernard C Marsman, Sander Martens, Fransje E Reesink, Peter P De Deyn, André Aleman
Apathy is a common symptom in patients with amnestic mild cognitive impairment (aMCI) and is associated with an increased risk of progression to Alzheimer's disease (AD). The neural substrates underlying apathy in aMCI may involve multiple brain regions, including the anterior cingulate cortex and the temporo-parietal region. Here we investigated neurometabolites in brain regions that may underlie apathy in aMCI patients using proton magnetic resonance spectroscopy (1 H-MRS). Twenty-eight aMCI patients with varying degrees of apathy and 20 matched controls underwent 1 H-MRS...
2018: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29706433/cognitive-correlates-of-pure-apathy-in-parkinson-s-disease
#18
Gabriella Santangelo, Alfonsina D'Iorio, Gianpaolo Maggi, Sofia Cuoco, Maria Teresa Pellecchia, Marianna Amboni, Paolo Barone, Carmine Vitale
INTRODUCTION: Previous studies exploring the association between apathy and cognitive deficits in Parkinson's disease (PD) employed scales and questionnaires for apathy, which did not control for the possible confounding effect of motor symptoms. Here we investigated the cognitive correlates of "pure apathy" by the Dimensional Apathy Scale, which allows us to assess apathy minimizing the influence of motor symptoms. METHODS: Consecutive PD outpatients referred to our centre were screened...
April 24, 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29704671/apathy-in-alzheimer-s-disease-and-frontotemporal-dementia-distinct-clinical-profiles-and-neural-correlates
#19
Fiona Kumfor, Alice Zhen, John R Hodges, Olivier Piguet, Muireann Irish
OBJECTIVE: Apathy is the most prevalent and disabling non-cognitive symptom of dementia and affects 90% of patients across the disease course. Despite its pervasiveness, how apathy manifests across dementia syndromes and the neurobiological mechanisms driving these symptoms are poorly understood. Here, we applied the multidimensional ABC model of apathy, which recognizes Affective, Behavioural and Cognitive apathy, in Alzheimer's disease (AD) and behavioural-variant frontotemporal dementia (bvFTD)...
March 29, 2018: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29703662/dysregulation-of-auditory-neuroplasticity-in-schizophrenia
#20
Patrice Voss, Maryse E Thomas, Gerson D Guercio, Etienne de Villers-Sidani
Schizophrenia is a complex brain syndrome characterized by an array of positive symptoms (delusions, hallucinations, disorganized speech), negative symptoms (alogia, apathy, avolition) and cognitive impairments (memory, executive functions). Although investigations of the cognitive deficits in schizophrenia have primarily concentrated on disturbances affecting higher-order cognitive processes, there is an increasing realization that schizophrenia also affects early sensory processing, which might, in fact, play a significant role in the development of higher-order cognitive impairments...
April 24, 2018: Schizophrenia Research
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