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Early onset psychosis

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https://www.readbyqxmd.com/read/28634109/cannabis-associated-psychosis-neural-substrate-and-clinical-impact
#1
REVIEW
R M Murray, A Englund, A Abi-Dargham, D Lewis, M Di Forti, C Davies, M Sherif, P McGuire, C D'Souza
Prospective epidemiological studies have consistently demonstrated that cannabis use is associated with an increased subsequent risk of both psychotic symptoms and schizophrenia-like psychoses. Early onset of use, daily use of high-potency cannabis, and synthetic cannabinoids carry the greatest risk. The risk-increasing effects are not explained by shared genetic predisposition between schizophrenia and cannabis use. Experimental studies in healthy humans show that cannabis and its active ingredient, delta-9-tetrahydrocannabinol (THC), can produce transient, dose-dependent, psychotic symptoms, as well as an array of psychosis-relevant behavioral, cognitive and psychophysiological effects; the psychotogenic effects can be ameliorated by cannabidiol (CBD)...
June 17, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28633054/men-and-women-with-psychosis-and-the-impact-of-illness-duration-on-sex-differences-the-second-australian-national-survey-of-psychosis
#2
Mary-Claire Hanlon, Linda E Campbell, Natalie Single, Clare Coleman, Vera A Morgan, Susan M Cotton, Helen J Stain, David J Castle
We aimed to examine and compare sex-differences in people receiving treatment for psychotic illnesses in community settings, based on long or short duration of illness; expecting association between longer illness-duration and worse outcomes in women and men. Clinical, demographic and service-use data from the Survey of High Impact Psychosis were analysed by sex and duration of illness (≤5 years; ≥6 years), using independent t-tests, chi-square tests, one-way ANOVA, and Cramer's V. Of the 1825 participants, 47% had schizophrenia, 17...
June 13, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28628228/epigenetic-mechanisms-underlying-nmda-receptor-hypofunction-in-the-prefrontal-cortex-of-juvenile-animals-in-the-mam-model-for-schizophrenia
#3
Yelena Gulchina, Song-Jun Xu, Melissa A Snyder, Felice Elefant, Wen-Jun Gao
Schizophrenia (SCZ) is characterized not only by psychosis, but also by working memory and executive functioning deficiencies, processes that rely on the prefrontal cortex (PFC). Because these cognitive impairments emerge prior to psychosis onset, we investigated synaptic function during development in the neurodevelopmental methylazoxymethanol acetate (MAM) model for SCZ. Specifically, we hypothesize that NMDAR hypofunction is attributable to reductions in the NR2B subunit through aberrant epigenetic regulation of gene expression, resulting in deficient synaptic physiology and PFC-dependent cognitive dysfunction, a hallmark of SCZ...
June 19, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28625185/deterioration-of-visuospatial-associative-memory-following-a-first-psychotic-episode-a-long-term-follow-up-study
#4
C M J Wannan, C F Bartholomeusz, V L Cropley, T E Van Rheenen, A Panayiotou, W J Brewer, T M Proffitt, L Henry, M G Harris, D Velakoulis, P McGorry, C Pantelis, S J Wood
BACKGROUND: Cognitive deficits are a core feature of schizophrenia, and impairments in most domains are thought to be stable over the course of the illness. However, cross-sectional evidence indicates that some areas of cognition, such as visuospatial associative memory, may be preserved in the early stages of psychosis, but become impaired in later established illness stages. This longitudinal study investigated change in visuospatial and verbal associative memory following psychosis onset...
June 19, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28617204/is-the-clinical-high-risk-state-a-valid-concept-retrospective-examination-in-a-first-episode-psychosis-sample
#5
Jai L Shah, Anne Crawford, Sally S Mustafa, Srividya N Iyer, Ridha Joober, Ashok K Malla
OBJECTIVE: One reason for worldwide interest in the clinical high-risk (CHR) state for psychosis is its potential as a target for prevention. However, the feasibility and utility of early intervention initiatives that are focused on this stage involve an untested assumption: that most patients with a first episode of psychosis (FEP) experience earlier CHR symptoms. The objective of this study was to identify and characterize the proportion of FEP patients who had experienced such symptoms prior to the onset of their psychosis...
June 15, 2017: Psychiatric Services: a Journal of the American Psychiatric Association
https://www.readbyqxmd.com/read/28613411/outcome-in-patients-converting-to-psychosis-following-a-treated-clinical-high-risk-state
#6
Ashok Malla, Marianne de Bonneville, Jai Shah, Gerald Jordan, Marita Pruessner, Kia Faridi, Mark Rabinovitch, Srividya N Iyer, Ridha Joober
AIM: We explored 2-year outcomes in a sample of clinical high risk (CHR) patients who converted to psychosis despite receiving interventions. METHODS: Of 167 CHR patients, 18 had converted to psychosis and received treatment for their first episode of psychosis in an early intervention service over 2 years. RESULTS: Compared to patients admitted directly to the same early intervention service without having been identified as CHR prior to onset of psychosis, CHR converters were in remission for fewer months (M = 5 vs M = 10); were more likely to be prescribed more than 1 antipsychotic medication (90% vs 68%) and to receive clozapine treatment (38% vs 2%) over 2 years...
June 14, 2017: Early Intervention in Psychiatry
https://www.readbyqxmd.com/read/28599949/quetiapine-extended-release-versus-aripiprazole-in-children-and-adolescents-with-first-episode-psychosis-the-multicentre-double-blind-randomised-tolerability-and-efficacy-of-antipsychotics-tea-trial
#7
Anne Katrine Pagsberg, Pia Jeppesen, Dea Gowers Klauber, Karsten Gjessing Jensen, Ditte Rudå, Marie Stentebjerg-Olesen, Peter Jantzen, Simone Rasmussen, Eva Ann-Sofie Saldeen, Maj-Britt Glenn Lauritsen, Niels Bilenberg, Anne Dorte Stenstrøm, Louise Nyvang, Sarah Madsen, Thomas M Werge, Theis Lange, Christian Gluud, Maria Skoog, Per Winkel, Jens Richardt M Jepsen, Birgitte Fagerlund, Christoph U Correll, Anders Fink-Jensen
BACKGROUND: Head-to-head trials to guide antipsychotic treatment choices for paediatric psychosis are urgently needed because extrapolations from adult studies might not be implementable. In this superiority trial with two-sided significance testing, we aimed to compare the efficacy and safety of quetiapine-extended release (quetiapine-ER) versus aripiprazole in children and adolescents with first-episode psychosis, to determine whether differences between the two treatments were sufficient to guide clinicians in their choice of one drug over the other...
June 6, 2017: Lancet Psychiatry
https://www.readbyqxmd.com/read/28587479/using-wechat-online-social-networking-in-a-real-world-needs-analysis-of-family-members-of-youths-at-clinical-high-risk-of-psychosis
#8
TianHong Zhang, LiHua Xu, YingYing Tang, HuiRu Cui, HuiJun Li, YanYan Wei, YangYang Xu, LiJuan Jiang, YiKang Zhu, ChunBo Li, KaiDa Jiang, ZePing Xiao, JiJun Wang
OBJECTIVE: The argument surrounding the safety and effectiveness of interventions for the population of individuals at a clinical high risk of developing psychosis has been ongoing for the past 30 years. However, few studies have assessed the needs of this special young population, who are struggling with the recent onset of psychotic symptoms. METHOD: The sample consisted of 171 family members of 108 clinical high-risk individuals included from the ShangHai at Risk for Psychosis research programme...
June 1, 2017: Australian and New Zealand Journal of Psychiatry
https://www.readbyqxmd.com/read/28578812/determinants-of-duration-of-untreated-psychosis-among-first-episode-psychosis-patients-in-denmark-a-nationwide-register-based-study
#9
Lene Halling Hastrup, Ulrik Helt Haahr, Jens Einar Jansen, Erik Simonsen
BACKGROUND: Information on determinants of duration of untreated psychosis (DUP) is still needed to inform campaigns targeting people with first episode psychosis (FEP). This nation-wide study analysed the association between demographic factors (age, sex, ethnicity, marital status, and geographic area), premorbid and illness-related factors (global functional level, substance misuse, and contact to police), healthcare factors (referral source and first FEP contact) and DUP. METHOD: The study population of 1266 patients aged 15-25years diagnosed with FEP (ICD10 F20...
May 31, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28578432/effects-of-childhood-and-adolescence-physical-activity-patterns-on-psychosis-risk-a-general-population-cohort-study
#10
Elina Sormunen, Maiju M Saarinen, Raimo K R Salokangas, Risto Telama, Nina Hutri-Kähönen, Tuija Tammelin, Jorma Viikari, Olli Raitakari, Jarmo Hietala
Schizophrenia spectrum disorders are associated with high morbidity and mortality in somatic diseases. The risk factors of this excess mortality include, e.g., obesity, dietary factors, and physical inactivity, especially after the onset of psychosis, but there are limited early developmental data on these factors in individuals who later develop psychosis. A population-based cohort study "Cardiovascular Risk of Young Finns" started in 1980 with 3596 children and adolescents from six different age groups (3, 6, 9, 12, 15, and 18 years)...
January 13, 2017: NPJ Schizophrenia
https://www.readbyqxmd.com/read/28575528/increased-striatal-and-reduced-prefrontal-cerebral-blood-flow-in-clinical-high-risk-for-psychosis
#11
Jochen Kindler, Frauke Schultze-Lutter, Martinus Hauf, Thomas Dierks, Andrea Federspiel, Sebastian Walther, Benno G Schimmelmann, Daniela Hubl
Increased striatal dopaminergic activity and decreased prefrontal functioning have been reported in individuals at clinical high risk (CHR) for psychosis. Abnormal metabolic rate might affect resting-state cerebral blood flow (rCBF) in the respective regions. Here, we examined if striatal and prefrontal rCBF differ between patients with CHR, first-episode psychosis (FEP), chronic schizophrenia-spectrum disorder (SZ) and controls. Two cohorts with a total of 122 participants were included and analyzed separately: 32 patients with SZ and 31 healthy controls (HC) from the University Hospital of Psychiatry, and 59 patients from the Bern Early Recognition and Intervention Center (29 with CHR, 12 with FEP, and 18 clinical controls [CC])...
May 30, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28575316/oxidative-stress-and-inflammation-in-early-onset-first-episode-psychosis-a-systematic-review-and-meta-analysis
#12
David Fraguas, Covadonga M Díaz-Caneja, Alberto Rodríguez-Quiroga, Celso Arango
Background: People with schizophrenia and other psychosis show increased proinflammatory and prooxidative status. However, the few studies that have specifically assessed oxidative and inflammatory markers in early onset psychosis (onset before age 18) have shown contradictory results. Methods: Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines for systematic reviews and meta-analyses were used to conduct a systematic literature search to detect studies comparing inflammatory and oxidative markers in early onset psychosis patients and healthy controls...
June 1, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28560931/psychosis-and-dementia-risk-factor-prodrome-or-cause
#13
Corinne E Fischer, Luis Agüera-Ortiz
BACKGROUND: Progression of dementia is often associated with the emergence of neuropsychiatric symptoms (NPS), though there is recent evidence that NPS may occur in prodromal dementia (PrD) and impact clinical course. Mood and anxiety symptoms are the NPS that tend to occur most frequently in PrD and thus have been most extensively studied. Comparatively, there has been little focus on psychotic symptoms in PrD. METHODS: The authors review the existing literature on psychosis in PrD, including the functional psychosis of early and late onset, with a focus on epidemiology, phenomenology, and clinical course and treatment considerations...
May 31, 2017: International Psychogeriatrics
https://www.readbyqxmd.com/read/28560251/effects-of-childhood-and-adolescence-physical-activity-patterns-on-psychosis-risk-a-general-population-cohort-study
#14
Elina Sormunen, Maiju M Saarinen, Raimo K R Salokangas, Risto Telama, Nina Hutri-Kähönen, Tuija Tammelin, Jorma Viikari, Olli Raitakari, Jarmo Hietala
Schizophrenia spectrum disorders are associated with high morbidity and mortality in somatic diseases. The risk factors of this excess mortality include, e.g., obesity, dietary factors, and physical inactivity, especially after the onset of psychosis, but there are limited early developmental data on these factors in individuals who later develop psychosis. A population-based cohort study "Cardiovascular Risk of Young Finns" started in 1980 with 3596 children and adolescents from six different age groups (3, 6, 9, 12, 15, and 18 years)...
2017: NPJ Schizophrenia
https://www.readbyqxmd.com/read/28552767/parenteral-nanoemulsions-of-risperidone-for-enhanced-brain-delivery-in-acute-psychosis-physicochemical-and-in-vivo-performances
#15
Sanela M Đorđević, Anja Santrač, Nebojša D Cekić, Bojan D Marković, Branka Divović, Tanja M Ilić, Miroslav M Savić, Snežana D Savić
This work aimed to deepen the lately acquired knowledge about parenteral nanoemulsions as carriers for brain delivery of risperidone, a poorly water-soluble antipsychotic drug, through establishing the prospective relationship between their physicochemical, pharmacokinetic, biodistribution, and behavioral performances. For this purpose, two optimized risperidone-loaded nanoemulsions, stabilized by lecithin or lecithin/polysorbate 80 mixture, and costabilized by sodium oleate, were produced by high-pressure homogenization...
May 25, 2017: International Journal of Pharmaceutics
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
#16
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/28528196/a-review-of-psychiatric-co-morbidity-described-in-genetic-and-immune-mediated-movement-disorders
#17
REVIEW
K J Peall, M S Lorentzos, I Heyman, M A J Tijssen, M J Owen, R C Dale, M A Kurian
Psychiatric symptoms are an increasingly recognised feature of movement disorders. Recent identification of causative genes and autoantibodies has allowed detailed analysis of aetiologically homogenous subgroups, thereby enabling determination of the spectrum of psychiatric symptoms in these disorders. This review evaluates the incidence and type of psychiatric symptoms encountered in patients with movement disorders. A broad spectrum of psychiatric symptoms was identified across all subtypes of movement disorder, with depression, generalised anxiety disorder and obsessive-compulsive disorder being most common...
May 18, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28526280/an-overview-of-medical-risk-factors-for-childhood-psychosis-implications-for-research-and-treatment
#18
REVIEW
Marianna Giannitelli, Angèle Consoli, Marie Raffin, Renaud Jardri, Douglas F Levinson, David Cohen, Claudine Laurent-Levinson
OBJECTIVE: Psychotic disorders in childhood and early adolescence often progress to chronic schizophrenia, but in many cases there are diagnosable medical and genetic causes or risk factors. We reviewed our clinical experience and the relevant literature to identify these factors and to define their clinical features, appropriate work-up and treatment. METHOD: We reviewed the results of comprehensive medical evaluations of 160 psychotic children and adolescents in our center...
May 16, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28515556/subacute-noninfective-inflammatory-encephalopathy-our-experience-and-diagnostic-problems
#19
Sadanandavalli Retnaswami Chandra, Lakshminarayanapuram Gopal Viswanathan, Dodmalur Malikarjuna Sindhu, Anupama Ramakanth Pai
INTRODUCTION: Immune dysregulation associated encephalopathies present with significant psychiatric manifestations and only a few soft neurological and general systemic features. They are generally resistant to treatment with psychiatric medications. Generalized orthostatic myoclonus and faciobrachial dystonic seizures are mistaken as Creutzfeldt-Jakob disease and subacute sclerosing panencephalitis. PATIENTS AND METHODS: Forty-two patients seen during 2010-2015 and diagnosed as noninfective encephalopathy were analyzed...
March 2017: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/28486982/geographical-accessibility-and-duration-of-untreated-psychosis-distance-as-a-determinant-of-treatment-delay
#20
Erling Inge Kvig, Beate Brinchmann, Cathrine Moe, Steinar Nilssen, Tor Ketil Larsen, Knut Sørgaard
BACKGROUND: The duration of untreated psychosis is determined by both patient and service related factors. Few studies have considered the geographical accessibility of services in relation to treatment delay in early psychosis. To address this, we investigated whether treatment delay is co-determined by straight-line distance to hospital based specialist services in a mainly rural mental health context. METHODS: A naturalistic cross-sectional study was conducted among a sample of recent onset psychosis patients in northern Norway (n = 62)...
May 10, 2017: BMC Psychiatry
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