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https://www.readbyqxmd.com/read/28643852/therapeutic-d2-3-receptor-occupancies-and-response-with-low-amisulpride-blood-concentrations-in-very-late-onset-schizophrenia-like-psychosis-vloslp
#1
Suzanne Reeves, Kate Eggleston, Elizabeth Cort, Emma McLachlan, Stuart Brownings, Akshay Nair, Suki Greaves, Alan Smith, Joel Dunn, Paul Marsden, Robert Kessler, David Taylor, Julie Bertrand, Robert Howard
OBJECTIVE: Antipsychotic drug sensitivity in very late-onset schizophrenia-like psychosis (VLOSLP) is well documented, but poorly understood. This study aimed to investigate blood drug concentration, D2/3 receptor occupancy and outcome in VLOSLP during open amisulpride prescribing, and compare this with Alzheimer's disease (AD). METHODS: Blood drug concentration, prolactin, symptoms and extrapyramidal side-effects (EPS) were serially assessed during dose titration...
June 23, 2017: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28554324/multi-target-directed-ligands-affecting-serotonergic-neurotransmission-for-alzheimer-s-disease-therapy-advances-in-chemical-and-biological-research
#2
Agnieszka Jankowska, Anna Wesołowska, Maciej Pawłowski, Grażyna Chłoń-Rzepa
Alzheimer's disease (AD) is an age-related neurodegenerative disorder characterized by a progressive cognitive impairments and chronic inflammation that affects over 30 million people all over the world. Most of Alzheimer's patients also suffer from psychosis, aggression, agitation, depression, anxiety, and many other behavioral and psychological symptoms of dementia. Unfortunately, currently available anti-AD drugs provide modest symptomatic relief, and do not reverse the neurodegeneration. Consequently, the average life expectancy after diagnosis is between six to ten years...
May 29, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28532646/the-novel-psen1-m84v-mutation-associated-to-frontal-dysexecutive-syndrome-spastic-paraparesis-and-cerebellar-atrophy-in-a-dominant-alzheimer-s-disease-family
#3
Maura Gallo, Francesca Frangipane, Chiara Cupidi, Matteo De Bartolo, Sabina Turone, Camilla Ferrari, Benedetta Nacmias, Giuliana Grimaldi, Valentina Laganà, Rosanna Colao, Livia Bernardi, Maria Anfossi, Maria Elena Conidi, Franca Vasso, Sabrina Anna Maria Curcio, Maria Mirabelli, Nicoletta Smirne, Giusi Torchia, Maria Gabriella Muraca, Gianfranco Puccio, Raffaele Di Lorenzo, Maristella Piccininni, Andrea Tedde, Raffaele Giovanni Maletta, Sandro Sorbi, Amalia Cecilia Bruni
We identified the novel PSEN1 pathogenic mutation M84V in 3 patients belonging to a large kindred affected by autosomal dominant Alzheimer's disease (AD). The clinical phenotype was characterized by early onset dementia in 14 affected subjects over 3 generations. Detailed clinical, imaging and genetic assessment was performed. We highlighted the presence of unusual symptoms such as frontal executive syndrome, psychosis and spastic paraparesis in these patients. Spastic paraparesis has been reported in other PSEN1 mutations in adjacent codons, suggesting that the position of the genetic defect may affect the clinical expression, although this phenotype can occur in mutations throughout the whole PSEN1 gene...
April 27, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28532510/gender-differences-in-psychiatric-diagnoses-in-older-people-with-intellectual-disability-a-register-study
#4
Anna Axmon, Magnus Sandberg, Gerd Ahlström
BACKGROUND: Gender differences regarding psychiatric ill-health are well known in the general population. However, not much research is done on people with intellectual disability, and especially not among older people with intellectual disability. METHODS: People with intellectual disability aged 55+ years in 2012 in Sweden were identified through a register containing information on those receiving support and service for this type of disability. The cohort comprised 3609 women and 4327 men with mean age 65 and 64 years, respectively...
May 22, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28483100/caregiver-burden-in-alzheimer-type-dementia-and-psychosis-a-comparative-study-from-india
#5
P Sinha, N G Desai, O Prakash, S Kushwaha, C B Tripathi
BACKGROUND: Caregiver burden in dementia is an important area of research. Providing care for a relative can be a potent source of chronic stress and can have deleterious consequences for both the physical and emotional health of caregivers. This study aims to evaluate the burden of care in caregivers of patients with Alzheimer-type dementia and compare it with elderly psychosis; and to also study the factors that influence burden of care in Alzheimer's dementia. METHODS: Thirty-two caregiver-patient dyads of Alzheimer-type dementia were compared with thirty-two caregiver-patient dyads of psychosis...
April 2017: Asian Journal of Psychiatry
https://www.readbyqxmd.com/read/28480579/longitudinal-epigenetic-predictors-of-amygdala-hippocampus-volume-ratio
#6
Esther Walton, Charlotte A M Cecil, Matthew Suderman, Jingyu Liu, Jessica A Turner, Vince Calhoun, Stefan Ehrlich, Caroline L Relton, Edward D Barker
BACKGROUND: The ratio between amygdala:hippocampal (AH) volume has been associated with multiple psychiatric problems, including anxiety and aggression. Yet, little is known about its biological underpinnings. Here, we used a methylome-wide approach to test (a) whether DNA methylation in early life (birth, age 7) prospectively associates with total AH volume ratio in early adulthood, and (b) whether significant DNA methylation markers are influenced by prenatal risk factors. METHODS: Analyses were based on a subsample (n = 109 males) from the Avon Longitudinal Study of Parents and Children, which included measures of prenatal risk, DNA methylation (Infinium Illumina 450k), T1-weighted brain scans and psychopathology in early adulthood (age 18-21)...
May 8, 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/28461698/genetic-risk-for-schizophrenia-and-psychosis-in-alzheimer-disease
#7
M A A DeMichele-Sweet, E A Weamer, L Klei, D T Vrana, D J Hollingshead, H J Seltman, R Sims, T Foroud, I Hernandez, S Moreno-Grau, L Tárraga, M Boada, A Ruiz, J Williams, R Mayeux, O L Lopez, E L Sibille, M I Kamboh, B Devlin, R A Sweet
Psychotic symptoms, defined as the occurrence of delusions or hallucinations, are frequent in Alzheimer disease (AD), affecting ~40 to 60% of individuals with AD (AD with psychosis (AD+P)). In comparison with AD subjects without psychosis, AD+P subjects have more rapid cognitive decline and poor outcomes. Prior studies have estimated the heritability of psychosis in AD at 61%, but the underlying genetic sources of this risk are not known. We evaluated a Discovery Cohort of 2876 AD subjects with (N=1761) or without psychosis (N=1115)...
May 2, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28458550/psychosis-in-behavioral-variant-frontotemporal-dementia
#8
Flora T Gossink, Everard Gb Vijverberg, Welmoed Krudop, Philip Scheltens, Max L Stek, Yolande Al Pijnenburg, Annemiek Dols
BACKGROUND: Dementia is generally characterized by cognitive impairment that can be accompanied by psychotic symptoms; for example, visual hallucinations are a core feature of dementia with Lewy bodies, and delusions are often seen in Alzheimer's disease. However, for behavioral variant of frontotemporal dementia (bvFTD), studies on the broad spectrum of psychotic symptoms are still lacking. The aim of this study was to systematically and prospectively subtype the wide spectrum of psychotic symptoms in probable and definite bvFTD...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28438466/the-effect-of-n-acetylcysteine-nac-on-human-cognition-a-systematic-review
#9
REVIEW
David R Skvarc, Olivia M Dean, Linda K Byrne, Laura Gray, Stephen Lane, Matthew Lewis, Brisa S Fernandes, Michael Berk, Andrew Marriott
Oxidative stress, neuroinflammation and neurogenesis are commonly implicated as cognitive modulators across a range of disorders. N-acetylcysteine (NAC) is a glutathione precursor with potent antioxidant, pro-neurogenesis and anti-inflammatory properties and a favourable safety profile. A systematic review of the literature specifically examining the effect of NAC administration on human cognition revealed twelve suitable articles for inclusion: four examining Alzheimer's disease; three examining healthy participants; two examining physical trauma; one examining bipolar disorder, one examining schizophrenia, and one examining ketamine-induced psychosis...
April 21, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28437057/psychotic-and-bipolar-disorders-behavioral-disorders-in-dementia
#10
REVIEW
Sherri Morgan
Psychosis is one of the most common conditions in later life, with dementia being a main contributing factor. The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5), now categorizes the various types of dementia as neurocognitive disorders. Alzheimer disease is a common cause of dementia and psychosis. Psychosis also is seen in patients with vascular dementia and dementia with Lewy bodies. Psychosis can be primary, caused by a psychiatric disorder listed in the DSM-5, or secondary, due to a medical or neurologic condition...
April 2017: FP Essentials
https://www.readbyqxmd.com/read/28387674/psychotic-symptoms-associated-with-poor-renal-function-in-mild-cognitive-impairment-and-dementias
#11
Ralf Kunschmann, Stefan Busse, Thomas Frodl, Mandy Busse
Patients suffering from cognitive decline such as mild cognitive impairment or neurodegenerative disorders including Alzheimer's dementia, vascular dementia, frontotemporal dementia, and Lewy body dementia are often accompanied by symptoms like psychosis, depression, agitation, and apathy. Aging increases not only the prevalence of dementia but also the development of kidney disorders, which had emerged as possible risk factor of cognitive impairment and dementia. However, a contribution of renal dysfunction to psychosis associated with cognitive decline remains to be investigated...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28366091/hallucinations-predict-relapse-after-discontinuation-of-risperidone-in-patients-with-alzheimer-s-disease-and-psychosis-or-agitation
#12
Helen Lavretsky
No abstract text is available yet for this article.
April 1, 2017: American Journal of Psychiatry
https://www.readbyqxmd.com/read/28334978/therapeutic-window-of-dopamine-d2-3-receptor-occupancy-to-treat-psychosis-in-alzheimer-s-disease
#13
Suzanne Reeves, Emma McLachlan, Julie Bertrand, Fabrizia D Antonio, Stuart Brownings, Akshay Nair, Suki Greaves, Alan Smith, David Taylor, Joel Dunn, Paul Marsden, Robert Kessler, Robert Howard
See Caravaggio and Graff-Guerrero (doi:10.1093/awx023) for a scientific commentary on this article.Antipsychotic drugs, originally developed to treat schizophrenia, are used to treat psychosis, agitation and aggression in Alzheimer's disease. In the absence of dopamine D2/3 receptor occupancy data to inform antipsychotic prescribing for psychosis in Alzheimer's disease, the mechanisms underpinning antipsychotic efficacy and side effects are poorly understood. This study used a population approach to investigate the relationship between amisulpride blood concentration and central D2/3 occupancy in older people with Alzheimer's disease by combining: (i) pharmacokinetic data (280 venous samples) from a phase I single (50 mg) dose study in healthy older people (n = 20, 65-79 years); (ii) pharmacokinetic, 18F-fallypride D2/3 receptor imaging and clinical outcome data on patients with Alzheimer's disease who were prescribed amisulpride (25-75 mg daily) to treat psychosis as part of an open study (n = 28; 69-92 years; 41 blood samples, five pretreatment scans, 19 post-treatment scans); and (iii) 18F-fallypride imaging of an antipsychotic free Alzheimer's disease control group (n = 10, 78-92 years), to provide additional pretreatment data...
April 1, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28319837/kalirin-reduction-rescues-psychosis-associated-behavioral-deficits-in-appswe-psen1de9-transgenic-mice
#14
Josh M Krivinko, Susan L Erickson, Eric E Abrahamson, Zachary P Wills, Milos D Ikonomovic, Peter Penzes, Robert A Sweet
Psychosis in Alzheimer's disease (AD+P) represents a distinct clinical and neurobiological AD phenotype and is associated with more rapid cognitive decline, higher rates of abnormal behaviors, and increased caregiver burden compared with AD without psychosis. On a molecular level, AD+P is associated with greater reductions in the protein kalirin, a guanine exchange factor which has also been linked to the psychotic disease, schizophrenia. In this study, we sought to determine the molecular and behavioral consequences of kalirin reduction in APPswe/PSEN1dE9 mice...
June 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28238739/consensus-based-recommendations-for-the-management-of-rapid-cognitive-decline-due-to-alzheimer-s-disease
#15
Jianping Jia, Serge Gauthier, Sarah Pallotta, Yong Ji, Wenshi Wei, Shifu Xiao, Dantao Peng, Qihao Guo, Liyong Wu, Shengdi Chen, Weihong Kuang, Junjian Zhang, Cuibai Wei, Yi Tang
INTRODUCTION: Rapid cognitive decline (RCD) occurs in dementia due to Alzheimer's disease (AD). METHODS: Literature review, consensus meetings, and a retrospective chart review of patients with probable AD were conducted. RESULTS: Literature review showed that RCD definitions varied. Mini-Mental State Examination scores <20 at treatment onset, vascular risk factors, age <70 years at symptom onset, higher education levels, and early appearance of hallucinations, psychosis, or extrapyramidal symptoms are recognized RCD risk factors...
May 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/28222514/one-year-evolution-of-behavioral-and%C3%A2-psychological-symptoms-of-dementia-in-patients-initially-hospitalized-in%C3%A2-cognitive-behavioral-units-the-evital-prospective-cohort
#16
Isabelle Rouch, Elodie Pongan, Béatrice Trombert, Florence Fabre, Nicolas Auguste, Claire Sellier, Magalie Freulon, Sophie Jacqueline, Denis Federico, Christelle Mouchoux, Géraldine Martin-Gaujard, Pierre Krolak-Salmon, Bernard Laurent, Jean-Michel Dorey
BACKGROUND: The 2008-2012 French Alzheimer's Plan has provided hospital Cognitive and Behavioral Units (CBU) to improve the management of patients with productive behavioral and psychological symptoms of dementia (BPSD). Little is known concerning the behavioral outcome of these patients after discharge. OBJECTIVE: The present study investigated the long-term evolution of BPSD over one year after CBU discharge. METHODS: The EVITAL cohort included 221 participants admitted to the CBUs of 3 French hospitals...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28219318/gender-and-pathology-specific-effect-of-apolipoprotein-e-genotype-on-psychosis-in-alzheimer-s-disease
#17
Julia Kim, Corinne E Fischer, Tom A Schweizer, David G Munoz
BACKGROUND: Symptoms of psychosis is one of the common clinical manifestations of Alzheimer's disease (AD). However, the pathophysiology behind psychosis is unknown. OBJECTIVE: The aim of the present study was to explore the relationship between Apolipoprotein E (APOE) genotype, Lewy body pathology, and psychosis in AD. METHODS: The data was obtained from the National Alzheimer's disease Coordinating Centre (NACC), using the Uniform Data Set and the Neuropathology Data Set...
February 20, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/27911311/risk-factors-and-pathological-substrates-associated-with-agitation-aggression-in-alzheimer-s-disease-a-preliminary-study-using-nacc-data
#18
Simrin Sennik, Tom A Schweizer, Corinne E Fischer, David G Munoz
BACKGROUND: Neuropsychiatric symptoms are common manifestations of Alzheimer's disease (AD). A number of studies have targeted psychosis, i.e., hallucinations and delusions in AD, but few have assessed agitation/aggression in AD. OBJECTIVE: To investigate the risk factors and pathological substrates associated with presence [A(+)] and absence [A(-)] of agitation/aggression (A) in autopsy-confirmed AD. METHODS: Data was collected from the UDS data as of 2015 on the NACC database...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27855483/prediction-of-relapse-after-discontinuation-of-antipsychotic-treatment-in-alzheimer-s-disease-the-role-of-hallucinations
#19
Anjali N Patel, Seonjoo Lee, Howard F Andrews, Gregory H Pelton, Susan K Schultz, David L Sultzer, Jacobo Mintzer, Danilo de la Pena, Sanjay Gupta, Sylvia Colon, Corbett Schimming, Bruce Levin, D P Devanand
OBJECTIVE: In Alzheimer's disease, antipsychotic medications are often used for a period, with relief of symptoms, and then discontinued, after which relapse may occur. The authors sought to determine which neuropsychiatric symptoms predict relapse. METHOD: In the Antipsychotic Discontinuation in Alzheimer's Disease trial, 180 patients with Alzheimer's disease and symptoms of agitation or psychosis were treated with risperidone for 16 weeks, after which patients who responded (N=110) were randomly assigned to continue risperidone for 32 weeks, to continue risperidone for 16 weeks followed by switch to placebo for 16 weeks, or to receive placebo for 32 weeks...
April 1, 2017: American Journal of Psychiatry
https://www.readbyqxmd.com/read/27819842/low-dose-lithium-treatment-for-agitation-and-psychosis-in-alzheimer-disease-and-frontotemporal-dementia-a-case-series
#20
Davangere P Devanand, Gregory H Pelton, Kristina D'Antonio, Jesse G Strickler, William C Kreisl, James Noble, Karen Marder, Anne Skomorowsky, Edward D Huey
No abstract text is available yet for this article.
January 2017: Alzheimer Disease and Associated Disorders
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