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Ultra-high risk for psychosis

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https://www.readbyqxmd.com/read/28740818/disrupted-latent-inhibition-in-individuals-at-ultra-high-risk-for-developing-psychosis
#1
Michael Kraus, Attilio Rapisarda, Max Lam, Jamie Y J Thong, Jimmy Lee, Mythily Subramaniam, Simon L Collinson, Siow Ann Chong, Richard S E Keefe
The addition of off-the-shelf cognitive measures to established prodromal criteria has resulted in limited improvement in the prediction of conversion to psychosis. Tests that assess cognitive processes central to schizophrenia might better identify those at highest risk. The latent inhibition paradigm assesses a subject's tendency to ignore irrelevant stimuli, a process integral to healthy perceptual and cognitive function that has been hypothesized to be a key deficit underlying the development of schizophrenia...
December 2016: Schizophrenia Research. Cognition
https://www.readbyqxmd.com/read/28740813/social-cognition-in-patients-at-ultra-high-risk-for-psychosis-what-is-the-relation-to-social-skills-and-functioning
#2
Louise B Glenthøj, Birgitte Fagerlund, Carsten Hjorthøj, Jens R M Jepsen, Nikolaj Bak, Tina D Kristensen, Christina Wenneberg, Kristine Krakauer, David L Roberts, Merete Nordentoft
OBJECTIVE: Patients at ultra-high risk (UHR) for psychosis show significant impairments in functioning. It is essential to determine which factors influence functioning, as it may have implications for intervention strategies. This study examined whether social cognitive abilities and clinical symptoms are associated with functioning and social skills. METHODS: The study included 65 UHR patients and 30 healthy controls. Social cognitive function, social skills, and a broad range of functioning measures were assessed...
September 2016: Schizophrenia Research. Cognition
https://www.readbyqxmd.com/read/28734908/why-transition-risk-to-psychosis-is-not-declining-at-the-oasis-ultra-high-risk-service-the-hidden-role-of-stable-pretest-risk-enrichment
#3
P Fusar-Poli, E Palombini, C Davies, D Oliver, I Bonoldi, V Ramella-Cravaro, P McGuire
BACKGROUND: The reason for declining risk to psychosis across individuals assessed and meeting Ultra High Risk (UHR) criteria is still unclear. No studies have investigated the potential substantial role of the underlying risk enrichment across all the individuals undergoing an UHR assessment. METHODS: Cohort study including all non-psychotic subjects who were assessed on suspicion of psychosis risk by the OASIS UHR service in the period 2001 to 2015. Posttest (after UHR assessment) and pretest risk (before UHR assessment) of psychosis were stratified and compared across three time periods (2001-2005, 2006-2010, 2011-2015) with Cox analysis and modulating factors were investigated...
July 19, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28728092/checking-the-predictive-accuracy-of-basic-symptoms-against-ultra-high-risk-criteria-and-testing-of-a-multivariable-prediction-model-evidence-from-a-prospective-three-year-observational-study-of-persons-at-clinical-high-risk-for-psychosis
#4
M P Hengartner, K Heekeren, D Dvorsky, S Walitza, W Rössler, A Theodoridou
BACKGROUND: The aim of this study was to critically examine the prognostic validity of various clinical high-risk (CHR) criteria alone and in combination with additional clinical characteristics. METHODS: A total of 188 CHR positive persons from the region of Zurich, Switzerland (mean age 20.5 years; 60.2% male), meeting ultra high-risk (UHR) and/or basic symptoms (BS) criteria, were followed over three years. The test battery included the Structured Interview for Prodromal Syndromes (SIPS), verbal IQ and many other screening tools...
June 3, 2017: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/28719151/staged-treatment-in-early-psychosis-a-sequential-multiple-assignment-randomised-trial-of-interventions-for-ultra-high-risk-of-psychosis-patients
#5
REVIEW
Barnaby Nelson, G Paul Amminger, Hok Pan Yuen, Nicky Wallis, Melissa J Kerr, Lisa Dixon, Cameron Carter, Rachel Loewy, Tara A Niendam, Martha Shumway, Sarah Morris, Julie Blasioli, Patrick D McGorry
AIM: Previous research indicates that preventive intervention is likely to benefit patients "at risk" of psychosis, in terms of functional improvement, symptom reduction and delay or prevention of onset of threshold psychotic disorder. The primary aim of the current study is to test outcomes of ultra high risk (UHR) patients, primarily functional outcome, in response to a sequential intervention strategy consisting of support and problem solving (SPS), cognitive-behavioural case management and antidepressant medication...
July 18, 2017: Early Intervention in Psychiatry
https://www.readbyqxmd.com/read/28713586/formal-thought-disorder-in-people-at-ultra-high-risk-of-psychosis
#6
Arsime Demjaha, Sara Weinstein, Daniel Stahl, Fern Day, Lucia Valmaggia, Grazia Rutigliano, Andrea De Micheli, Paolo Fusar-Poli, Philip McGuire
BACKGROUND: Formal thought disorder is a cardinal feature of psychosis. However, the extent to which formal thought disorder is evident in ultra-high-risk individuals and whether it is linked to the progression to psychosis remains unclear. AIMS: Examine the severity of formal thought disorder in ultra-high-risk participants and its association with future psychosis. METHOD: The Thought and Language Index (TLI) was used to assess 24 ultra-high-risk participants, 16 people with first-episode psychosis and 13 healthy controls...
July 2017: BJPsych Open
https://www.readbyqxmd.com/read/28712967/clinical-utility-of-the-calgary-depression-scale-for-schizophrenia-in-individuals-at-ultra-high-risk-of-psychosis
#7
Gurpreet Rekhi, Wai Yee Ng, Jimmy Lee
There is a pressing need for reliable and valid rating scales to assess and measure depression in individuals at ultra-high risk (UHR) of psychosis. The aim of this study was to examine the clinical utility of the Calgary Depression Scale for Schizophrenia (CDSS) in individuals at UHR of psychosis. 167 individuals at UHR of psychosis were included as participants in this study. The Structured Clinical Interview for DSM-IV Axis I Disorders, CDSS, Beck Anxiety Inventory and Global Assessment of Functioning were administered...
July 13, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28692185/an-application-of-functional-near-infrared-spectroscopy-as-supplementary-examination-for-diagnosis-of-clinical-stages-of-psychosis-spectrum
#8
Shinsuke Koike, Satomura Yoshihiro, Shingo Kawasaki, Yukika Nishimura, Akihide Kinoshita, Hanako Sakurada, Mika Yamagishi, Eriko Ichikawa, Jun Matsuoka, Naohiro Okada, Ryu Takizawa, Kiyoto Kasai
AIM: Research efforts aiming at neuroimaging-aided differential diagnosis for psychiatric disorders have been progressing rapidly. A previous multisite study has developed supplementary diagnostic system using functional near-infrared spectroscopy (fNIRS) that can be easily applied to clinical settings. However, few neuroimaging biomarkers have been developed for psychosis spectrum with various clinical stages. METHODS: We employed the fNIRS as a clinical examination device for 143 participants, comprising 47 ultra-high risk (UHR) individuals, 30 patients with first-episode psychosis (FEP), 34 patients with chronic schizophrenia (ChSZ), and 33 healthy controls, who were independent of the previous study...
July 10, 2017: Psychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/28689498/the-slow-death-of-the-concept-of-schizophrenia-and-the-painful-birth-of-the-psychosis-spectrum
#9
S Guloksuz, J van Os
The concept of schizophrenia only covers the 30% poor outcome fraction of a much broader multidimensional psychotic syndrome, yet paradoxically has become the dominant prism through which everything 'psychotic' is observed, even affective states with mild psychosis labelled 'ultra-high risk' (for schizophrenia). The inability of psychiatry to frame psychosis as multidimensional syndromal variation of largely unpredictable course and outcome - within and between individuals - hampers research and recovery-oriented practice...
July 10, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28688741/stronger-default-mode-network-connectivity-is-associated-with-poorer-clinical-insight-in-youth-at-ultra-high-risk-for-psychotic-disorders
#10
Sarah V Clark, Vijay A Mittal, Jessica A Bernard, Aral Ahmadi, Tricia Z King, Jessica A Turner
Impaired clinical insight (CI) is a common symptom of psychotic disorders and a promising treatment target. However, to date, our understanding of how variability in CI is tied to underlying brain dysfunction in the clinical high-risk period is limited. Developing a stronger conception of this link will be a vital first step for efforts to determine if CI can serve as a useful prognostic indicator. The current study investigated whether variability in CI is related to major brain networks in adolescents and young adults at ultra high-risk (UHR) of developing psychosis...
July 5, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28670977/ventricular-volumes-across-stages-of-schizophrenia-and-other-psychoses
#11
Gregor E Berger, Cali F Bartholomeusz, Stephen J Wood, Anthony Ang, Lisa J Phillips, Tina Proffitt, Warrick J Brewer, Deidre J Smith, Barnaby Nelson, Ashleigh Lin, Stefan Borgwardt, Dennis Velakoulis, Alison R Yung, Patrick D McGorry, Christos Pantelis
OBJECTIVE: Ventricular enlargement is common in established schizophrenia; however, data from ultra high-risk for psychosis and first-episode psychosis studies are inconclusive. This study aims to investigate ventricular volumes at different stages of psychosis. METHODS: Ventricular volumes were measured using a semi-automated and highly reliable method, for 89 established schizophrenia, 162 first-episode psychosis, 135 ultra high-risk for psychosis and 87 healthy controls using 1...
June 1, 2017: Australian and New Zealand Journal of Psychiatry
https://www.readbyqxmd.com/read/28666366/child-maltreatment-and-clinical-outcome-in-individuals-at-ultra-high-risk-for-psychosis-in-the-eu-gei-high-risk-study
#12
Tamar C Kraan, Eva Velthorst, Manouk Themmen, Lucia Valmaggia, Matthew J Kempton, Phillip McGuire, Jim van Os, Bart P F Rutten, Filip Smit, Lieuwe de Haan, Mark van der Gaag
Background: Child maltreatment has been associated with a wide range of mental disorders in adulthood. Whether child maltreatment is specifically associated with psychosis risk in individuals at ultra-high risk (UHR) for psychosis, or leads to a general vulnerability for overall psychopathology in the UHR stage remains unclear. The present study examines the association between child maltreatment and transition to psychosis and other mental disorders. Methods: The sample consisted of 259 UHR individuals from the EUropean network of national schizophrenia networks studying Gene-Environment Interactions (EU-GEI) study...
June 28, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28612979/research-and-practice-for-ultra-high-risk-for-psychosis-a-national-survey-of-early-intervention-in-psychosis-services-in-england
#13
Helen J Stain, Lauren Mawn, Stephanie Common, Marie Pilton, Andrew Thompson
BACKGROUND: Evidence from meta-analyses of randomized clinical trials show interventions for young people at ultra-high risk (UHR) of developing psychosis are effective both clinically and economically. While research evidence has begun to be integrated into clinical guidelines, there is a lack of research on the implementation of these guidelines. This paper examines service provision for UHR individuals in accordance with current clinical guidelines within the National Health Service (NHS) in England...
June 14, 2017: Early Intervention in Psychiatry
https://www.readbyqxmd.com/read/28603875/impairments-of-spontaneous-and-deliberative-mentalizing-co-occur-yet-dissociate-in-schizophrenia
#14
Robyn Langdon, Michaela Flynn, Emily Connaughton, Martin Brüne
OBJECTIVES: Evidence of impairment in explicit mentalizing in people with schizophrenia has inspired interventions to improve awareness of others' mental states in these individuals. Less is known of implicit mentalizing in schizophrenia, with current findings mixed. We sought to resolve previous inconsistencies using Heider & Simmel's (H&S) classic animation to elicit spontaneous mentalizing and examined relations between spontaneous and deliberative mentalizing. METHODS: Forty-five schizophrenia outpatients and 27 general-community controls completed two explicit theory-of-mind (TOM) tasks and then described the H&S animation (to elicit spontaneous social attributions about emotionally driven, as well as goal-driven, behaviours), before and after an instruction to think of the shapes as people...
June 12, 2017: British Journal of Clinical Psychology
https://www.readbyqxmd.com/read/28602647/state-marker-properties-of-niacin-skin-sensitivity-in-ultra-high-risk-groups-for-psychosis-an-optical-reflection-spectroscopy-study
#15
Kerstin Langbein, Ulrike Schmidt, Stephan Schack, Natalie J Biesel, Maria Rudzok, G Paul Amminger, Maximus Berger, Heinrich Sauer, Stefan Smesny
Impaired niacin sensitivity (NS) is one of the most replicated findings in untreated schizophrenia, and reflects a disturbance of prostaglandin-mediated pathways in association with deregulated arachidonic acid metabolism, pro-inflammatory activation, and vasomotor function. In ultra-high risk individuals (UHR) increased NS was reported recently, pointing towards dynamic alterations of the underlying pathomechanisms in the period preceding psychosis. However, these characteristics are still unresolved in the diverse UHR groups...
June 8, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28601502/neighbourhood-deprivation-is-positively-associated-with-detection-of-the-ultra-high-risk-uhr-state-for-psychosis-in-south-east-london
#16
V Bhavsar, P Fusar-Poli, P McGuire
BACKGROUND: Individuals are defined as being at ultra-high risk (UHR) for psychosis based on a combination of attenuated psychotic symptoms, help-seeking behaviour, genetic risk, and social/occupational deterioration. Limited evidence is available on whether UHR detection differs by neighbourhood, and potential explanations. AIMS: To examine neighbourhood distribution of detected UHR using cases from the OASIS service in South East London, investigating neighbourhood deprivation as an explanatory variable...
June 8, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28595088/the-relationship-between-cannabis-use-and-cortisol-levels-in-youth-at-ultra-high-risk-for-psychosis
#17
Emily E Carol, Robert L Spencer, Vijay A Mittal
Recent studies have posited a relationship between cannabis use and the biological stress system, but this critical relationship has not been evaluated during the ultra high-risk (UHR) period immediately preceding the onset of psychotic disorders. Salivary cortisol samples were collected on 46 UHR and 29 control adolescents; these individuals were assessed for current cannabis use with a urine panel and self-report. UHR participants where separated into two groups: Current Cannabis Use (UHR-CU) and No Current Cannabis Use (UHR-NC)...
May 30, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28575528/increased-striatal-and-reduced-prefrontal-cerebral-blood-flow-in-clinical-high-risk-for-psychosis
#18
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/28560266/the-effect-of-cognitive-remediation-in-individuals-at-ultra-high-risk-for-psychosis-a-systematic-review
#19
Louise Birkedal Glenthøj, Carsten Hjorthøj, Tina Dam Kristensen, Charlie Andrew Davidson, Merete Nordentoft
Cognitive deficits are prominent features of the ultra-high risk state for psychosis that are known to impact functioning and course of illness. Cognitive remediation appears to be the most promising treatment approach to alleviate the cognitive deficits, which may translate into functional improvements. This study systematically reviewed the evidence on the effectiveness of cognitive remediation in the ultra-high risk population. The electronic databases MEDLINE, PsycINFO, and Embase were searched using keywords related to cognitive remediation and the UHR state...
2017: NPJ Schizophrenia
https://www.readbyqxmd.com/read/28536477/reduced-mismatch-negativity-is-associated-with-increased-plasma-level-of-glutamate-in-first-episode-psychosis
#20
Tatsuya Nagai, Kenji Kirihara, Mariko Tada, Daisuke Koshiyama, Shinsuke Koike, Motomu Suga, Tsuyoshi Araki, Kenji Hashimoto, Kiyoto Kasai
Reduced amplitude of mismatch negativity (MMN) is one of the more promising biological markers of schizophrenia. This finding holds true in both early and chronic phases of the disorder, and is compatible with the glutamatergic dysfunction hypothesis. To further establish MMN as a biomarker of aberrant glutamatergic neurotransmission, an exploration for an association with blood levels of glutamatergic amino acids is an important next step. Despite a large body of work investigating MMN in schizophrenia, no previous studies have undertaken this endeavor...
May 23, 2017: Scientific Reports
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