Publications by authors named "Gabriele Sachs"

Article Synopsis
  • Researchers tried to create models to predict how well people with first episode psychosis (FEP) would do after treatment, but it was hard to tell if these predictions worked for different groups of patients.
  • They tested these models using patients from two big studies in Europe and found out that while the models were somewhat accurate, they didn't work as well when applied to patients from a different study.
  • The results showed that it’s really important to check and improve these prediction models with independent samples of patients to make them better and more reliable in the future.
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: Cognitive impairment is a relevant problem in psychiatry and can be well assessed with a cross-diagnostic test such as the Screen for Cognitive Impairment in Psychiatry (SCIP). The aim of our pilot study is to assess cognitive impairment in acute psychiatric inpatients diagnosed with psychotic disorders, bipolar disorder and depression using the German version of the SCIP (SCIP-G). We also investigate whether cognitive dysfunction improves over the course of the inpatient treatment, where patients are offered a combination of pharmacological treatment and cognitive remediation.

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Article Synopsis
  • Artificial light at night is identified as a significant stressor that disrupts circadian rhythms, affecting melatonin production and leading to various health issues, particularly concerning metabolic pathways.
  • The review focuses on how light pollution can worsen mood disorders and other psychiatric conditions by interfering with sleep and circadian patterns, underlining the importance of melatonin in mental health.
  • Results from the review highlight the connection between light pollution and mood symptoms, suggesting that better lighting design in environments is essential for promoting mental well-being.
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Background And Hypothesis: Cognition has been associated with socio-occupational functioning in individuals at Clinical High Risk for Psychosis (CHR-P). The present study hypothesized that clustering CHR-P participants based on cognitive data could reveal clinically meaningful subtypes.

Study Design: A cohort of 291 CHR-P subjects was recruited through the multicentre EU-GEI high-risk study.

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Despite the functional impact of cognitive deficit in people with psychosis, objective cognitive assessment is not typically part of routine clinical care. This is partly due to the length of traditional assessments and the need for a highly trained administrator. Brief, automated computerised assessments could help to address this issue.

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Background: We examined the course of illness over a 12-month period in a large, international multi-center cohort of people with a first-episode schizophrenia spectrum disorder (FES) in a naturalistic, prospective study (PSYSCAN).

Method: Patients with a first episode of schizophrenia, schizoaffective disorder (depressive type) or schizophreniform disorder were recruited at 16 institutions in Europe, Israel and Australia. Participants (N = 304) received clinical treatment as usual throughout the study.

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Article Synopsis
  • This study examines how various factors like negative symptoms, processing speed, and emotion recognition influence functional outcomes in individuals with schizophrenia.
  • Researchers used different scales and tests to assess symptoms and cognitive abilities in 150 subjects across Europe, analyzing their impact on daily functioning.
  • Findings revealed that negative symptoms, particularly expressive and motivational deficits, significantly mediate the effects of cognitive impairments on real-life functioning, indicating specific pathways for improving outcomes in patients.
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  • The study aimed to explore the link between cannabis use and the development of psychotic disorders in individuals at high risk for psychosis, addressing both the incidence of psychosis and the ongoing presence of symptoms over time.
  • Researchers evaluated 334 at-risk individuals and 67 healthy controls over two years, assessing their cannabis use and mental health status through structured questionnaires and assessments.
  • Results indicated that a significant portion of participants developed psychosis, yet cannabis use did not show a meaningful connection to the onset, persistence of symptoms, or functional outcomes, challenging previous findings that suggested cannabis increases psychosis risk.
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Individuals at clinical high risk (CHR) for psychosis have been found to have altered cytokine levels, but whether these changes are related to clinical outcomes remains unclear. We addressed this issue by measuring serum levels of 20 immune markers in 325 participants (n = 269 CHR, n = 56 healthy controls) using multiplex immunoassays, and then followed up the CHR sample to determine their clinical outcomes. Among 269 CHR individuals, 50 (18.

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  • Adverse childhood experiences (ACE) significantly hinder educational achievements, particularly in individuals at clinical high risk of psychosis (CHR).
  • A study involving 344 CHR individuals and 67 healthy controls found that the CHR group had higher ACE rates, spent less time in education, and faced higher unemployment compared to healthy controls.
  • The research suggests that addressing ACE through early intervention programs can improve educational and vocational outcomes for CHR individuals, emphasizing the need for broader public health measures to prevent and mitigate the effects of ACE.
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Background And Hypothesis: Around 20% of people at clinical high risk (CHR) for psychosis later develop a psychotic disorder, but it is difficult to predict who this will be. We assessed the incidence of hearing speech (termed speech illusions [SIs]) in noise in CHR participants and examined whether this was associated with adverse clinical outcomes.

Study Design: At baseline, 344 CHR participants and 67 healthy controls were presented with a computerized white noise task and asked whether they heard speech, and whether speech was neutral, affective, or whether they were uncertain about its valence.

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Background: Impairment in a wide range of cognitive abilities has been consistently reported in individuals with schizophrenia. Both neurocognitive and social cognitive deficits are thought to underlie severe functional disabilities associated with schizophrenia. Despite the key role in schizophrenia outcome, cognition is still poorly assessed in both research and clinical settings.

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Background: Although cognitive impairment is a core symptom of schizophrenia related to poorer outcomes in different functional domains, it still remains a major therapeutic challenge. To date, no comprehensive treatment guidelines for cognitive impairment in schizophrenia are implemented.

Methods: The aim of the present guidance paper is to provide a comprehensive meta-review of the current available evidence-based treatments for cognitive impairment in schizophrenia.

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Objective: People at ultra-high risk (UHR) for psychosis have a high prevalence of tobacco smoking, and rates are even higher among the subgroup that later develop a psychotic disorder. However, the longitudinal relationship between the course of tobacco smoking and clinical outcomes in UHR subjects is unknown.

Methods: We investigated associations between tobacco smoking and clinical outcomes in a prospective study of UHR individuals ( = 324).

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Objective: To examine the association between baseline alterations in grey matter volume (GMV) and clinical and functional outcomes in people at clinical high risk (CHR) for psychosis.

Methods: 265 CHR individuals and 92 healthy controls were recruited as part of a prospective multi-center study. After a baseline assessment using magnetic resonance imaging (MRI), participants were followed for at least two years to determine clinical and functional outcomes, including transition to psychosis (according to the Comprehensive Assessment of an At Risk Mental State, CAARMS), level of functioning (according to the Global Assessment of Functioning), and symptomatic remission (according to the CAARMS).

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Background: Psychiatric disorders, especially schizophrenia, are characterised by cognitive impairment. The rapid detection of cognitive dysfunction - also in the course of the disease - is of great importance. The Screen for Cognitive Impairment in Psychiatry (SCIP) was developed to provide screening of psychiatric patients in clinical practice and is available in several languages.

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Robust deficits in cognitive functioning are present in people with psychosis and are evident in the early stages of the disorder. Impairments in verbal memory and verbal fluency are reliably seen in individuals at clinical high-risk for psychosis (CHR) compared to healthy populations. As previous studies have shown a relationship between cognition and longer-term outcomes in schizophrenia, the aim of this paper was to explore whether verbal memory and verbal fluency performance predicted outcomes in a large CHR sample recruited as part of the EU-GEI High Risk Study.

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Background: Negative symptoms are usually evaluated with scales based on observer ratings and up to now self-assessments have been overlooked. The aim of this paper was to validate the Self-evaluation of Negative Symptoms (SNS) in a large European sample coming from 12 countries. We wanted to demonstrate: (1) good convergent and divergent validities; (2) relationships between SNS scores and patients' functional outcome; (3) the capacity of the SNS compared to the Brief Negative Symptom Scale (BNSS) to detect negative symptoms; and (4) a five-domain construct in relation to the 5 consensus domains (social withdrawal, anhedonia, alogia, avolition, blunted affect) as the best latent structure of SNS.

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Introduction: Diagnoses of anxiety and/or depression are common in subjects at Ultra-High Risk for Psychosis (UHR) and associated with extensive functional impairment. Less is known about the impact of affective comorbidities on the prospective course of attenuated psychotic symptoms (APS).

Method: Latent class mixed modelling identified APS trajectories in 331 UHR subjects assessed at baseline, 6, 12, and 24 months follow-up.

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Article Synopsis
  • The study focuses on the prevalence of tobacco smoking among individuals at ultra-high risk of psychosis, revealing that over half (53%) of participants smoked an average of 12.4 cigarettes per day.
  • While smokers did not show significant differences in specific symptom severity compared to non-smokers, there was a notable link between cigarette consumption and higher levels of general psychopathology.
  • The findings suggest that the high-risk period for psychosis could be a crucial time for introducing smoking prevention and cessation strategies, even though changing smoking habits did not significantly impact symptom changes.
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Objective: The purpose of our functional magnetic resonance imaging (fMRI) study was to examine brain activity using a "1-back" paradigm as working memory task in drug-naïve subjects with first episode schizophrenia before and after cognitive remediation training.

Methods: In this study 15 drug-naïve first episode subjects who met DSM-IV criteria for schizophrenia were randomized to receive either atypical antipsychotics (AP, n = 8) or atypical antipsychotics in combination with cognitive remediation therapy (AP + CR, n = 7), 11 subjects had a follow-up fMRI examination after therapy (AP, n = 5; AP + CR, n = 6).

Results: In 4 of the 6 AP + CR subjects the number of activation clusters increased, whereas in 4 out of the 5 AP subjects the number of clusters decreased (mean number of clusters: AP + CR = 5.

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Background: The Screen for Cognitive Impairment in Psychiatry (SCIP) is a brief scale designed for detecting cognitive deficits in patients with psychiatric disorders including schizophrenia. In this preliminary study the psychometric properties of the German version of the SCIP are examined in a sample of patients with schizophrenia and schizoaffective psychosis (DSM-IV) as well as in healthy controls.

Methods: Thirty patients and thirty matched controls were asked to complete two versions of the SCIP separated by two-week intervals in addition to psychiatric and neurocognitive instruments including assessments to measure psychosocial functioning.

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Background: The high prevalence of obsessive-compulsive symptoms (OCS) among subjects at Ultra-High Risk (UHR) for psychosis is well documented. However, the network structure spanning the relations between OCS and symptoms of the at risk mental state for psychosis as assessed with the Comprehensive Assessment of At Risk Mental States (CAARMS) has not yet been investigated. This article aimed to use a network approach to investigate the associations between OCS and CAARMS symptoms in a large sample of individuals with different levels of risk for psychosis.

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Important questions remain about the profile of cognitive impairment in psychotic disorders across adulthood and illness stages. The age-associated profile of familial impairments also remains unclear, as well as the effect of factors, such as symptoms, functioning, and medication. Using cross-sectional data from the EU-GEI and GROUP studies, comprising 8455 participants aged 18 to 65, we examined cognitive functioning across adulthood in patients with psychotic disorders (n = 2883), and their unaffected siblings (n = 2271), compared to controls (n = 3301).

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Cognitive deficits are known as a core feature in bipolar disorder. Persisting neurocognitive impairment is associated with low psychosocial functioning. The aim of this study was to identify potential cognitive, clinical and treatment-dependent predictors for functional impairment, symptom severity and early recurrence in bipolar patients, as well as to analyze neurocognitive performance compared to healthy controls.

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