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Alzheimer's behavioral manifestations

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https://www.readbyqxmd.com/read/28899446/affective-and-emotional-dysregulation-as-pre-dementia-risk-markers-exploring-the-mild-behavioral-impairment-symptoms-of-depression-anxiety-irritability-and-euphoria
#1
Zahinoor Ismail, Jennifer Gatchel, Daniel R Bateman, Ricardo Barcelos-Ferreira, Marc Chantillon, Judith Jaeger, Nancy J Donovan, Moyra E Mortby
BACKGROUND: Affective and emotional symptoms such as depression, anxiety, euphoria, and irritability are common neuropsychiatric symptoms (NPS) in pre-dementia and cognitively normal older adults. They comprise a domain of Mild Behavioral Impairment (MBI), which describes their emergence in later life as an at-risk state for cognitive decline and dementia, and as a potential manifestation of prodromal dementia. This selective scoping review explores the epidemiology and neurobiological links between affective and emotional symptoms, and incident cognitive decline, focusing on recent literature in this expanding field of research...
September 13, 2017: International Psychogeriatrics
https://www.readbyqxmd.com/read/28857270/physical-aggression-among-patients-with-dementia-neuropathologically-confirmed-post-mortem
#2
Madeleine Liljegren, Maria Landqvist Waldö, Elisabet Englund
OBJECTIVE: To investigate the prevalence of physical aggression among patients with dementia of different types and to analyze potential differences in clinical traits, in terms of singular or repetitive behavior and occurrence in early or late stage of the disease. We also aimed at examining against whom the physical aggression was exerted. METHODS: We included 281 cases with a neuropathological dementia diagnosis from the brain bank at the Department of Pathology, Lund University, for this retrospective medical records review...
August 31, 2017: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28844871/emerging-role-of-amyloid-beta-in-stress-response-implication-for-depression-and-diabetes
#3
Maria Grazia Morgese, Stefania Schiavone, Luigia Trabace
Chronic stress is considered a widely accepted risk factor for the development of neuropsychiatric and neurological disorders. Indeed, high cortisol levels, and, thus, hypothalamic pituitary adrenal (HPA)-axis dysregulation, have been indicated as the most frequent alteration in patients affected by depression, as well as by Alzheimer's disease (AD). Furthermore, depressive state has been pointed as an early manifestation of AD, advocating an overlap between these neuropathological events. We have previously demonstrated that central soluble beta amyloid 1-42 (Aβ) administration peptide induces a depressive like-behavior in rats, with altered HPA axis activation, reduced cortical serotonin and neurotrophin levels...
August 24, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28734089/dementia-risk-and-prevention-by-targeting-modifiable-vascular-risk-factors
#4
REVIEW
Sana Tariq, Philip A Barber
The incidence of dementia is expected to double in the next 20 years and will contribute to heavy social and economic burden. Dementia is caused by neuronal loss that leads to brain atrophy years before symptoms manifest. Currently, no cure exists and extensive efforts are being made to mitigate cognitive impairment in late life in order to reduce the burden on patients, caregivers, and society. The most common type of dementia, Alzheimer's disease (AD), and vascular dementia (VaD) often co-exists in the brain and shares common, modifiable risk factors, which are targeted in numerous secondary prevention trials...
July 22, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28700830/spectral-and-photophysical-behavior-of-cytisine-in-n-hexane-experimental-evidence-for-the-s1-n-%C3%AF-%C3%A2-s0-fluorescence
#5
Ewa Krystkowiak, Anna K Przybył, Małgorzata Bayda, Julia Józkowiak, Andrzej Maciejewski
Spectral and photophysical properties of (-)-cytisine (the compound used as a smoking cessation aid and a potential drug in Alzheimer's and Parkinson's diseases) were investigated. The two conformers of cytisine, whose presence in the S0 state has been earlier proved by the NMR and IR methods as well as in theoretical calculation, in nonpolar n-hexane show a rarely observed prompt fluorescence from the S1(n,π*) excited state. This observation is unambiguously evidenced by very small radiative rate constants of these two emitting conformers, kF = 7...
July 25, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28697564/an-intracellular-amyloid-%C3%AE-a%C3%AE-pp-epitope-correlates-with-neurodegeneration-in-those-neuronal-populations-early-involved-in-alzheimer-s-disease
#6
Gisela Esquerda-Canals, Joaquim Martí-Clúa, Alejandro R Roda, Sandra Villegas
The main histopathological hallmarks of Alzheimer's disease (AD) are the extracellular deposition of neuritic amyloid plaques, composed of amyloid-β (Aβ) peptide, and the intracellular accumulation of neurofibrillary tangles, composed of hyperphosphorylated tau. Both traits are emulated in the 3xTg-AD mouse model. Because the relevance of this model in the bibliography and the main role of Aβ in neuronal impairment, here we have detailed the brain Aβ/AβPP distribution to subsequently quantify cellular density and intracellular burden for specific neuronal populations in the early stages of the disease...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28689508/social-inappropriateness-in-neurodegenerative-disorders
#7
Philippe Desmarais, Krista L Lanctôt, Mario Masellis, Sandra E Black, Nathan Herrmann
BACKGROUND: New onset of mood and behavioral changes in middle-aged patients are frequently the first manifestations of an unrecognized neurocognitive disorder. Impairment of social cognition, the cognitive ability to process social information coming from others, such as emotions, to attribute mental states to others, and to respond appropriately to them, is often at the origin of behavioral manifestations in neurodegenerative disorders. METHODS: This paper reviews the current literature on social cognition impairment in neurocognitive disorders, particularly in prodromal stages of behavioral-variant frontotemporal dementia (bvFTD), Alzheimer's disease (AD), idiopathic Parkinson's disease (IPD), and Lewy body dementia (LBD)...
July 10, 2017: International Psychogeriatrics
https://www.readbyqxmd.com/read/28560728/decreasing-hazards-of-alzheimer-s-disease-with-the-use-of-antidepressants-mitigating-the-risk-of-depression-and-apolipoprotein-e
#8
Shanna L Burke, Peter Maramaldi, Tamara Cadet, Walter Kukull
OBJECTIVE: Alzheimer's disease (AD) is a neurodegenerative disease, manifesting in clinically observable deficits in memory, thinking, and behavior that disproportionately affects older adults. Susceptibility genes, such as apolipoprotein ε4, have long been associated with an increased risk of AD diagnosis. Studies have shown associations between depression and increased risk of AD development. Furthermore, findings from previous investigations suggest mixed effects in the use of psychotropic medication in older adults...
May 31, 2017: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28530341/-measuring-the-effect-of-multi-sensory-stimulation-in-the-snoezelen-room-on-sleep-quality-of-alzheimer-patients-using-actigraph
#9
Doron Todder, Meital Levartovsky, Tzvi Dwolatzky
BACKGROUND: The most common cause of dementia is Alzheimer's disease. The major manifestation of the disease is the cognitive impairment which appears at the onset of the disease. In addition to the cognitive impairment there are behavioral dysfunctions such as apathy, anxiety, depression and sleep disturbances. The treatment for the manifestations of Alzheimer is currently pharmacological and behavioral. One of the newest behavioral treatments for Alzheimer is the multi-sensory treatment using the Snoezelen room...
December 2016: Harefuah
https://www.readbyqxmd.com/read/28499898/antidepressant-drugs-for-beta-amyloid-induced-depression-a-new-standpoint
#10
Stefania Schiavone, Paolo Tucci, Emanuela Mhillaj, Maria Bove, Luigia Trabace, Maria Grazia Morgese
Mounting evidence suggests that depression represents a risk factor and an early manifestation of Alzheimer's disease (AD). Neuropsychiatric symptoms may derive from neurobiological changes in specific brain areas and may be considered prodromal of dementia. We have previously reported the depressive-like profile in rats receiving a single intracerebroventricular injection of soluble amyloid beta protein (ßA). Here, we verified the effect of different classes of antidepressants on the ßA-induced depressive behavior and on cortical monoamine levels...
August 1, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28450241/regulatory-effects-of-galanin-system-on-development-of-several-age-related-chronic-diseases
#11
REVIEW
Penghua Fang, Mei Yu, Dang Wan, Lei Zhang, Long Han, Zhongqi Shen, Mingyi Shi, Yan Zhu, Zhenwen Zhang, Ping Bo
Age is a major risk factor for developing chronic diseases, including type 2 diabetes, depression and Alzheimer's disease. The rapidly increase in the morbidity of these age-related chronic diseases is becoming a global problem. Although our understanding of these age-related diseases has tremendously been improved in recent years, certain aspects of their etiology and relative regulatory factors still remain elusive to clinicians and researchers. Emerging evidences suggest that neuropeptide galanin is involved in the pathogenesis of type 2 diabetes, depression and Alzheimer's disease...
September 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28404803/neuropsychiatric-symptoms-predict-hypometabolism-in-preclinical-alzheimer-disease
#12
Kok Pin Ng, Tharick A Pascoal, Sulantha Mathotaarachchi, Chang-Oh Chung, Andréa L Benedet, Monica Shin, Min Su Kang, Xiaofeng Li, Maowen Ba, Nagaendran Kandiah, Pedro Rosa-Neto, Serge Gauthier
OBJECTIVE: To identify regional brain metabolic dysfunctions associated with neuropsychiatric symptoms (NPS) in preclinical Alzheimer disease (AD). METHODS: We stratified 115 cognitively normal individuals into preclinical AD (both amyloid and tau pathologies present), asymptomatic at risk for AD (either amyloid or tau pathology present), or healthy controls (no amyloid or tau pathology present) using [(18)F]florbetapir PET and CSF phosphorylated tau biomarkers...
May 9, 2017: Neurology
https://www.readbyqxmd.com/read/28373857/alzheimer-s-disease-biomarkers-in-the-genome-blood-and-cerebrospinal-fluid
#13
REVIEW
Rose Ann Huynh, Chandra Mohan
Alzheimer's disease (AD) is a progressive neurodegenerative disorder that slowly destroys memory and thinking skills, resulting in behavioral changes. It is estimated that nearly 36 million are affected globally with numbers reaching 115 million by 2050. AD can only be definitively diagnosed at autopsy since its manifestations of senile plaques and neurofibrillary tangles throughout the brain cannot yet be fully captured with current imaging technologies. Current AD therapeutics have also been suboptimal. Besides identifying markers that distinguish AD from controls, there has been a recent drive to identify better biomarkers that can predict the rates of cognitive decline and neocortical amyloid burden in those who exhibit preclinical, prodromal, or clinical AD...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28323683/genetic-alzheimer-disease-and-sporadic-dementia-with-lewy-bodies-a-comorbidity-presenting-as-primary-progressive-aphasia
#14
Tereza Picková, Radoslav Matěj, Ondrej Bezdicek, Jiří Keller, Julie van der Zee, Christine Van Broeckhoven, Zsolt Cséfalvay, Robert Rusina
We report a 44-year-old woman, with a family history of early-onset dementia, presenting with primary progressive aphasia. This clinically variable syndrome has multiple underlying pathologies, and correlations between clinical manifestations and postmortem neuropathologic findings are controversial. Our patient suffered worsening language impairment with major word-finding difficulties but preserved comprehension. She also developed episodic memory impairment. Her condition progressed to dementia with behavioral changes...
March 2017: Cognitive and Behavioral Neurology: Official Journal of the Society for Behavioral and Cognitive Neurology
https://www.readbyqxmd.com/read/28274813/possible-role-of-endothelin-receptor-against-hyperhomocysteinemia-and-%C3%AE-amyloid-induced-ad-type-of-vascular-dementia-in-rats
#15
Major Singh, Atish Prakash
Vascular dementia (VaD) is considered as the second commonest form of dementia after Alzheimer's disease (AD). The study was designed to investigate the effect of endothelin receptor against β-amyloid induced AD type of vascular dementia. This disease was induced by combine administration of single ICV (intracerebroventricle) infusion of β-amyloid (Aβ) once and chronic oral administration of l-Methionine for 21 days. Bosentan (dual endothelin receptor antagonist) was administered for 21 days. Behavioral alterations were observed during different time interval of the study...
March 6, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28265458/diagnosing-the-frontal-variant-of-alzheimer-s-disease-a-clinician-s-yellow-brick-road
#16
REVIEW
Russell P Sawyer, Federico Rodriguez-Porcel, Matthew Hagen, Rhonna Shatz, Alberto J Espay
BACKGROUND: Disruption of the frontal lobes and its associated networks are a common consequence of neurodegenerative disorders. Given the wide range of cognitive, behavioral and motor processes in which the frontal lobes are involved, there can be a great variety of manifestations depending on the pathology distribution. The most common are the behavioral variant of frontotemporal dementia (bvFTD) and the frontal variant of Alzheimer's disease (fvAD), which are particularly challenging to disentangle...
2017: Journal of Clinical Movement Disorders
https://www.readbyqxmd.com/read/28173832/gene-environment-interaction-between-lead-and-apolipoprotein-e4-causes-cognitive-behavior-deficits-in-mice
#17
Anna K Engstrom, Jessica M Snyder, Nobuyo Maeda, Zhengui Xia
BACKGROUND: Alzheimer's disease (AD) is characterized by progressive cognitive decline and memory loss. Environmental factors and gene-environment interactions (GXE) may increase AD risk, accelerate cognitive decline, and impair learning and memory. However, there is currently little direct evidence supporting this hypothesis. METHODS: In this study, we assessed for a GXE between lead and ApoE4 on cognitive behavior using transgenic knock-in (KI) mice that express the human Apolipoprotein E4 allele (ApoE4-KI) or Apolipoprotein E3 allele (ApoE3-KI)...
February 7, 2017: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/28106551/conscientiousness-is-negatively-associated-with-grey-matter-volume-in-young-apoe-%C3%A9-4-carriers
#18
Lukas Kunz, Martin Reuter, Nikolai Axmacher, Christian Montag
The etiology of late onset Alzheimer's disease (LOAD) depends on multiple factors, among which the APOE ɛ4 allele is the most adverse genetic determinant and conscientiousness represents an influential personality trait. A potential association of both factors with brain structure in young adulthood may constitute a constellation that sets the course toward or against the subtle disease progression of LOAD that starts decades before clinical manifestation. Hence, in the present study, we examined the modulating effects of APOE ɛ4 on the relation between personality dimensions, including conscientiousness, and total grey matter volume (GMV) in young healthy adults using an a priori genotyping design...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28105932/genes-of-susceptibility-to-early-neurodegenerative-changes-in-the-rat-retina-and-brain-analysis-by-means-of-congenic-strains
#19
Elena E Korbolina, Anna A Zhdankina, Anzhela Zh Fursova, Oyuna S Kozhevnikova, Natalia G Kolosova
BACKGROUND: There has been considerable interest in discovery of the genetic architecture of complex traits, particularly age-related neurodegenerative disorders. To predict disease risk and to understand its genetic basis in humans, it is necessary to study animal models. Our previous research on the accelerated-senescence OXYS strain has revealed two quantitative trait loci (QTLs) on rat chromosome 1 that are associated with early cataract and/or retinopathy as well as with behavioral abnormalities...
December 22, 2016: BMC Genetics
https://www.readbyqxmd.com/read/28099631/associations-of-cerebrovascular-metabolism-genotypes-with-neuropsychiatric-symptoms-and-age-at-onset-of-alzheimer-s-disease-dementia
#20
Fabricio F de Oliveira, Elizabeth S Chen, Marilia C Smith, Paulo H Bertolucci
Objective: To study associations of cerebrovascular metabolism genotypes and haplotypes with age at Alzheimer's disease dementia (AD) onset and with neuropsychiatric symptoms according to each dementia stage. Methods: Consecutive outpatients with late-onset AD were assessed for age at dementia onset and Neuropsychiatric Inventory scores according to Clinical Dementia Rating scores, apolipoprotein E gene (APOE) haplotypes, angiotensin-converting enzyme gene (ACE) variants rs1800764 and rs4291, low-density lipoprotein cholesterol receptor gene (LDLR) variants rs11669576 and rs5930, cholesteryl ester transfer protein gene (CETP) variants I422V and TaqIB, and liver X receptor beta gene (NR1H2) polymorphism rs2695121...
April 2017: Revista Brasileira de Psiquiatria
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