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https://www.readbyqxmd.com/read/29338796/cortical-morphology-development-in-patients-with-22q11-2-deletion-syndrome-at-ultra-high-risk-of-psychosis
#1
Maria Carmela Padula, Marie Schaer, Marco Armando, Corrado Sandini, Daniela Zöller, Elisa Scariati, Maude Schneider, Stephan Eliez
BACKGROUND: Patients with 22q11.2 deletion syndrome (22q11DS) present a high risk of developing psychosis. While clinical and cognitive predictors for the conversion towards a full-blown psychotic disorder are well defined and largely used in practice, neural biomarkers do not yet exist. However, a number of investigations indicated an association between abnormalities in cortical morphology and higher symptoms severities in patients with 22q11DS. Nevertheless, few studies included homogeneous groups of patients differing in their psychotic symptoms profile...
January 17, 2018: Psychological Medicine
https://www.readbyqxmd.com/read/29338492/genetic-variation-of-gria3-gene-is-associated-with-vulnerability-to-methamphetamine-dependence-and-its-associated-psychosis
#2
Sri-Arun Iamjan, Samur Thanoi, Paritat Watiktinkorn, Gavin P Reynolds, Sutisa Nudmamud-Thanoi
Methamphetamine (METH) is an addictive psychostimulant drug commonly leading to schizophrenia-like psychotic symptoms. Disturbances in glutamatergic neurotransmission have been proposed as neurobiological mechanisms and the α-amino-3 hydroxy-5 methyl-4 isoxazole propionic acid (AMPA) glutamate receptor has been implicated in these processes. Moreover, genetic variants in GRIAs, genes encoding AMPA receptor subunits, have been observed in association with both drug dependence and psychosis. We hypothesized that variation of GRIA genes may be associated with METH dependence and METH-induced psychosis...
January 1, 2018: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/29338289/a-systematic-review-of-risk-factors-for-methamphetamine-associated-psychosis
#3
Shalini Arunogiri, James A Foulds, Rebecca McKetin, Dan I Lubman
OBJECTIVE: Chronic methamphetamine use is commonly associated with the development of psychotic symptoms. The predictors and correlates of methamphetamine-associated psychosis are poorly understood. We sought to systematically review factors associated with psychotic symptoms in adults using illicit amphetamine or methamphetamine. METHODS: A systematic literature search was performed on MEDLINE (OVID), PsycINFO and EMBASE databases from inception to 8 December 2016...
January 1, 2018: Australian and New Zealand Journal of Psychiatry
https://www.readbyqxmd.com/read/29334657/relationship-of-obsessive-compulsive-symptoms-to-clinical-variables-and-cognitive-functions-in-individuals-at-ultra-high-risk-for-psychosis
#4
Ahmet Zihni Soyata, Selin Akışık, Damla İnhanlı, Handan Noyan, Alp Üçok
Few studies have investigated the relationship between obsessive-compulsive symptoms (OCS) and clinical variables, and cognition in individuals at ultra high-risk (UHR) for psychosis. The aim of this study was to evaluate the frequency of OCS and their relationship with clinical variables and cognitive functions in individuals at UHR. Eighty-four individuals at UHR for psychosis were administered the Brief Psychiatric Rating Scale, the Yale-Brown Obsession Compulsion Symptom Check List and, the Calgary Depression Scale for Schizophrenia...
January 6, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29334229/physical-and-psychological-health-of-carers-of-young-people-with-first-episode-psychosis
#5
Abner Weng Cheong Poon, Jackie Curtis, Philip Ward, Celia Loneragan, Julia Lappin
OBJECTIVE: Carers of people with psychosis may experience psychological distress and caregiving burden. However, few studies have examined both psychological and physical health of carers of young people with first episode psychosis (FEP). METHOD: A total of 32 young people with FEP and 42 of their carers were recruited from a mental health service. Standardised scales were administered to assess carers' psychological distress and risk for development of Type 2 diabetes...
January 1, 2018: Australasian Psychiatry: Bulletin of Royal Australian and New Zealand College of Psychiatrists
https://www.readbyqxmd.com/read/29334044/gene-environment-interplay-in-the-etiology-of-psychosis
#6
Alyson Zwicker, Eileen M Denovan-Wright, Rudolf Uher
Schizophrenia and other types of psychosis incur suffering, high health care costs and loss of human potential, due to the combination of early onset and poor response to treatment. Our ability to prevent or cure psychosis depends on knowledge of causal mechanisms. Molecular genetic studies show that thousands of common and rare variants contribute to the genetic risk for psychosis. Epidemiological studies have identified many environmental factors associated with increased risk of psychosis. However, no single genetic or environmental factor is sufficient to cause psychosis on its own...
January 15, 2018: Psychological Medicine
https://www.readbyqxmd.com/read/29332009/poststroke-psychosis-a-systematic-review
#7
REVIEW
Helle Stangeland, Vasiliki Orgeta, Vaughan Bell
A preregistered systematic review of poststroke psychosis examining clinical characteristics, prevalence, diagnostic procedures, lesion location, treatments, risk factors and outcome. Neuropsychiatric outcomes following stroke are common and severely impact quality of life. No previous reviews have focused on poststroke psychosis despite clear clinical need. CINAHL, MEDLINE and PsychINFO were searched for studies on poststroke psychosis published between 1975 and 2016. Reviewers independently selected studies for inclusion, extracted data and rated study quality...
January 13, 2018: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29331930/sleep-quality-psychological-symptoms-and-psychotic-like-experiences
#8
Arielle Ered, Shanna Cooper, Lauren M Ellman
Poor sleep quality has been repeatedly linked to the entire psychosis continuum, including psychotic-like experiences (PLEs); however, sleep dysfunction is a component of several other psychopathologies that have also been linked to increased risk for PLEs, including depression, anxiety, and post-traumatic stress disorder (PTSD). It has yet to be examined if PLEs are a significant risk factor for poor sleep quality or if this sleep dysfunction is better accounted for by comorbid psychopathology. In 2687 undergraduates, PLEs were evaluated using the positive items of the Prodromal Questionnaire...
December 26, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/29331603/metabolic-risk-factors-in-schizophrenia-and-bipolar-disorder-the-effect-of-comedication-with-selective-serotonin-reuptake-inhibitors-and-antipsychotics
#9
K K Fjukstad, A Engum, S Lydersen, I Dieset, N Eiel Steen, O A Andreassen, O Spigset
BACKGROUND: The aim of this observational study was to investigate the relationship between metabolic factors and use of selective serotonin reuptake inhibitors (SSRIs) combined with olanzapine, quetiapine or risperidone. METHODS: Data from the Norwegian Thematically Organized Psychosis study, a cross-sectional study on 1301 patients with schizophrenia (n=868) or bipolar disorder (n=433), were analyzed. As exposure variables in the linear regression model were included the dose or serum concentration of SSRIs (n=280) and of olanzapine (n=398), quetiapine (n=234) or risperidone (n=128)...
April 17, 2017: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/29331153/is-cognitive-impairment-associated-with-antipsychotic-dose-and-anticholinergic-equivalent-loads-in-first-episode-psychosis
#10
Alejandro Ballesteros, Ana M Sánchez-Torres, Jose M López-Ilundain, Bibiana Cabrera, Antonio Lobo, Ana M González-Pinto, Covadonga Díaz-Caneja, Iluminada Corripio, Eduard Vieta, Elena de la Serna, Julio Bobes, Judith Usall, Fernando Contreras, Ruth Lorente-Omeñaca, Gisela Mezquida, Miguel Bernardo, Manuel J Cuesta
BACKGROUND: Cognitive deficits are a core feature of early stages in schizophrenia. However, the extent to which antipsychotic (AP) have a deleterious effect on cognitive performance remains under debate. We aim to investigate whether anticholinergic loadings and dose of AP drugs in first episode of psychosis (FEP) in advanced phase of remission are associated with cognitive impairment and the differences between premorbid intellectual quotient (IQ) subgroups. METHODS: Two hundred and sixty-six patients participated...
January 14, 2018: Psychological Medicine
https://www.readbyqxmd.com/read/29329382/adolescent-synthetic-cannabinoid-exposure-produces-enduring-changes-in-dopamine-neuron-activity-in-a-rodent-model-of-schizophrenia-susceptibility
#11
David D Aguilar, Andrea Giuffrida, Daniel J Lodge
Background: Epidemiological studies recognize cannabis intake as a risk factor for schizophrenia, yet the majority of adolescents who use marijuana do not develop psychosis. Similarly, the abuse of synthetic cannabinoids poses a risk for psychosis. For these reasons, it is imperative to understand the effects of adolescent cannabinoid exposure in susceptible individuals. Method: We have recently developed a novel rodent model of schizophrenia susceptibility, the F2 MAM rat, where only a proportion (~40%) of rats display a schizophrenia-like phenotype...
January 10, 2018: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29328019/amygdala-reactivity-in-ethnic-minorities-and-its-relationship-to-the-social-environment-an-fmri-study
#12
Robert McCutcheon, Michael A P Bloomfield, Tarik Dahoun, Marina Quinlan, Sylvia Terbeck, Mitul Mehta, Oliver Howes
BACKGROUND: Ethnic minority individuals have an increased risk of developing a psychotic disorder, particularly if they live in areas of ethnic segregation, or low own group ethnic density. The neurobiological mechanisms underlying this ethnic minority associated risk are unknown. We used functional MRI to investigate neural responses to faces of different ethnicity, in individuals of black ethnicity, and a control group of white British ethnicity individuals. METHODS: In total 20 individuals of black ethnicity, and 22 individuals of white British ethnicity underwent a 3T MRI scan while viewing faces of black and white ethnicity...
January 12, 2018: Psychological Medicine
https://www.readbyqxmd.com/read/29315805/gender-specific-risk-factors-for-low-bone-mineral-density-in-patients-taking-antipsychotics-for-psychosis
#13
Min Jhon, Taeyoung Yoo, Ju-Yeon Lee, Seon-Young Kim, Jae-Min Kim, Il-Seon Shin, Lana Williams, Michael Berk, Jin-Sang Yoon, Sung-Wan Kim
OBJECTIVE: This study examined clinical and gender-specific risk factors for low bone mineral density (BMD) in adult patients with psychotic disorders. METHODS: The study included 285 community-dwelling patients with psychotic disorders. Dual-energy X-ray absorptiometry was used to measure BMD. Clinical characteristics associated with low BMD were identified with logistic regression analysis in total population and each gender. RESULTS: Fifty-eight (20...
January 8, 2018: Human Psychopharmacology
https://www.readbyqxmd.com/read/29314591/relationship-between-metacognitive-beliefs-and-psychosocial-performance-in-at-risk-states-of-psychosis-and-patients-with-first-psychotic-episodes
#14
Martin Brüne, Kim-Alisha Drommelschmidt, Seza Krüger-Özgürdal, Georg Juckel
AIMS: Improving diagnostic batteries to identify individuals at-risk for developing psychotic disorders as early as possible is an ongoing challenge in schizophrenia research. Here, we sought to explore whether metacognition in at-risk of developing psychosis would differ from that of first episode psychosis and unaffected controls and whether dysfunctional metacognitive beliefs would be associated with psychosocial functioning in the clinical groups. METHODS: Twenty-three subjects at-risk of psychosis were compared with a group of 15 first psychotic episode patients and 21 healthy controls with regard to their metacognitive beliefs and psychosocial functioning...
January 4, 2018: Early Intervention in Psychiatry
https://www.readbyqxmd.com/read/29310919/increased-complications-for-schizophrenia-and-bipolar-disorder-patients-undergoing-total-joint-arthroplasty
#15
Michael M Kheir, You Na P Kheir, Timothy L Tan, Colin T Ackerman, Alexander J Rondon, Antonia F Chen
BACKGROUND: Although it has been shown that anxiety and depression are associated with increased complications after total joint arthroplasty (TJA), the outcomes of TJA in patients with a history of psychosis are unknown. This study evaluated the influence of bipolar and schizophrenic disorders on complications after TJA, particularly aseptic and septic revisions. METHODS: A retrospective review of 156 TJAs (125 primaries and 31 revisions) was performed at a single institution from 2000 to 2015...
December 14, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29310738/genetically-predicted-complement-component-4a-expression-effects-on-memory-function-and-middle-temporal-lobe-activation
#16
G Donohoe, J Holland, D Mothersill, S McCarthy-Jones, D Cosgrove, D Harold, A Richards, K Mantripragada, M J Owen, M C O'Donovan, M Gill, A Corvin, D W Morris
BACKGROUND: The longstanding association between the major histocompatibility complex (MHC) locus and schizophrenia (SZ) risk has recently been accounted for, partially, by structural variation at the complement component 4 (C4) gene. This structural variation generates varying levels of C4 RNA expression, and genetic information from the MHC region can now be used to predict C4 RNA expression in the brain. Increased predicted C4A RNA expression is associated with the risk of SZ, and C4 is reported to influence synaptic pruning in animal models...
January 9, 2018: Psychological Medicine
https://www.readbyqxmd.com/read/29306175/joint-evaluation-of-serum-c-reactive-protein-levels-and-polygenic-risk-scores-as-risk-factors-for-schizophrenia
#17
Vishwajit L Nimgaonkar, Faith Dickerson, Jennie G Pouget, Kodavali Chowdari, Colm O'Dushlaine, Joel Wood, Lambertus Klei, Bernie Devlin, Robert Yolken
Several studies have indicated infectious and immune-related abnormalities in schizophrenia (Scz), including elevated serum C-reactive protein (CRP) - a well-known proxy for infections/immune abnormalities. A portion of the genetic risk for Scz can be estimated using the polygenic risk score (PGRS). It is not known whether there is an interaction in the risks traceable to CRP and PGRS. Patients with Scz and individuals without psychosis were evaluated systematically using DSM IV criteria (N=794, N=446, respectively)...
December 21, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29303949/psychosis-risk-syndrome-what-now
#18
Othman Sentissi, Maria A Andreou, Clotilde Moeglin, Logos Curtis, Micaela Santos Brosch
BACKGROUND: Schizophrenia is a chronic psychiatric disorder that generally begins in late adolescence or early adulthood. This early onset is often linked with a devastating lifelong impact on both the social network and work capacities of the affected subjects. Beginning in the mid-1990s, several sets of diagnostic criteria aiming to identify "high-risk" patients were developed and applied in clinical studies. Short-term rates of onset of psychosis in this subgroup of subjects ranged from 20% to 40%...
November 2017: Journal of Psychiatric Practice
https://www.readbyqxmd.com/read/29301576/predicting-7-day-30-day-and-60-day-all-cause-unplanned-readmission-a-case-study-of-a-sydney-hospital
#19
Yashar Maali, Oscar Perez-Concha, Enrico Coiera, David Roffe, Richard O Day, Blanca Gallego
BACKGROUND: The identification of patients at high risk of unplanned readmission is an important component of discharge planning strategies aimed at preventing unwanted returns to hospital. The aim of this study was to investigate the factors associated with unplanned readmission in a Sydney hospital. We developed and compared validated readmission risk scores using routinely collected hospital data to predict 7-day, 30-day and 60-day all-cause unplanned readmission. METHODS: A combination of gradient boosted tree algorithms for variable selection and logistic regression models was used to build and validate readmission risk scores using medical records from 62,235 live discharges from a metropolitan hospital in Sydney, Australia...
January 4, 2018: BMC Medical Informatics and Decision Making
https://www.readbyqxmd.com/read/29301025/childhood-trauma-is-associated-with-severity-of-hallucinations-and-delusions-in-psychotic-disorders-a-systematic-review-and-meta-analysis
#20
Thomas Bailey, Mario Alvarez-Jimenez, Ana M Garcia-Sanchez, Carol Hulbert, Emma Barlow, Sarah Bendall
Introduction: Childhood trauma is a risk factor for the development of psychosis. Furthermore, a number of theories propose specific mechanisms by which childhood trauma may contribute to more severe positive and negative psychotic symptoms, some of which are supported empirically. The robustness of this empirical evidence is unclear due to mixed results and methodological limitations of individual studies. A systematic review and meta-analysis of the evidence for associations between childhood trauma and severity of hallucinations, delusions, and negative psychotic symptoms in clinical populations with a diagnosed psychotic disorder is needed...
January 2, 2018: Schizophrenia Bulletin
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