Reelin is an extracellular matrix glycoprotein reduced in brain regions (the prefrontal cortex and the hippocampus) of patients with schizophrenia. There are diverse rodent models of schizophrenia that mimic patient symptoms based on various causal theories; however, likely shared reelin alterations have not yet been systematically assessed in...
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November 9, 2022 (v1)PublicationUploaded on: December 4, 2022
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October 10, 2022 (v1)Publication
atients with non-affective psychosis often lead unhealthy lifestyles. We performed a systematic review and meta-analysis on non-pharmacological RCTs for improvement of diet and physical activity in non-affective psychosis patients, including first-episode psychosis. A variety of outcomes was analysed, including metabolic, psychopathology,...
Uploaded on: March 24, 2023 -
June 22, 2022 (v1)Publication
Background. Neuroanatomical abnormalities in first-episode psychosis (FEP) tend to be sub tle and widespread. The vast majority of previous studies have used small samples, and there fore may have been underpowered. In addition, most studies have examined participants at a single research site, and therefore the results may be specific to the...
Uploaded on: March 25, 2023 -
September 13, 2022 (v1)Publication
In recent years, multiple studies have investigated the role of biomarkers in first-episode psychosis (FEP) to facilitate early diagnosis, disease stratification, therapeutic choice and outcome prediction. Few studies have focused on cerebrospinal fluid (CSF) investigations. In this prospective observational study, 95 FEP inpatients were...
Uploaded on: March 24, 2023 -
September 12, 2022 (v1)Publication
The Enhancing NeuroImaging Genetics through Meta-Analysis copy number variant (ENIGMA-CNV) and 22q11.2 Deletion Syndrome Working Groups (22q-ENIGMA WGs) were created to gain insight into the involvement of genetic factors in human brain development and related cognitive, psychiatric and behavioral manifestations. To that end, the ENIGMA-CNV WG...
Uploaded on: December 4, 2022 -
October 25, 2023 (v1)Publication
Emerging evidence suggests brain white matter alterations in adolescents with early-onset psychosis (EOP; age of onset <18 years). However, as neuroimaging methods vary and sample sizes are modest, results remain inconclusive. Using harmonized data processing protocols and a mega-analytic approach, we compared white matter microstructure in EOP...
Uploaded on: November 25, 2023 -
April 14, 2023 (v1)Publication
Despite the high level of interest in the use of machine learning (ML) and neuroimaging to detect psychosis at the individual level, the reliability of the findings is unclear due to potential methodological issues that may have inflated the existing literature. This study aimed to elucidate the extent to which the application of ML to...
Uploaded on: April 15, 2023 -
May 23, 2023 (v1)Publication
Unravelling the complex events driving grade-specific spatial distribution of brain tumour occurrence requires rich datasets from both healthy individuals and patients. Here, we combined open-access data from The Cancer Genome Atlas, the UK Biobank and the Allen Brain Human Atlas to disentangle how the different spatial occurrences of...
Uploaded on: May 26, 2023 -
October 20, 2022 (v1)Publication
Predicting functional outcomes after surgery and early adjuvant treatment is difficult due to the complex, extended, interlocking brain networks that underpin cognition. The aim of this study was to test glioma functional interactions with the rest of the brain, thereby identifying the risk factors of cognitive recovery or deterioration....
Uploaded on: March 24, 2023 -
November 28, 2022 (v1)Publication
Abstract Background Sex differences in incidence and/or presentation of schizophrenia (SCZ), major depressive disorder (MDD), and bipolar disorder (BIP) are pervasive. Previous evidence for shared genetic risk and sex differences in brain abnormalities across disorders suggest possible shared sex-dependent genetic risk. Methods We conducted...
Uploaded on: March 24, 2023 -
May 16, 2023 (v1)Publication
Los trastornos del espectro de la esquizofrenia (SSD) son enfermedades mentales que parecen estar provocadas por una combinacion de multiples factores geneticos y ambientales. Entre los factores ambientales desencadenantes, el papel de los eventos traumaticos sufridos en la infancia y el consumo de sustancias resultan de particular interes para...
Uploaded on: May 17, 2023 -
November 23, 2022 (v1)Publication
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Uploaded on: December 4, 2022 -
September 15, 2022 (v1)Publication
Schizophrenia is associated with widespread alterations in subcortical brain structure.While analytic methods have enabled more detailed morphometric characterization,findings are often equivocal. In this meta-analysis, we employed the harmonizedENIGMA shape analysis protocols to collaboratively investigate subcortical brainstructure shape...
Uploaded on: December 4, 2022 -
May 29, 2023 (v1)Publication
Treatment-resistant schizophrenia (TRS) will affect about one in three patients with schizophrenia. Clozapine is the only treatment approved for TRS, and patients should be treated as soon as possible to improve their chances of achieving remission. Despite its effectiveness, concern over side effects, monitoring requirements, and inexperience...
Uploaded on: May 31, 2023 -
September 28, 2022 (v1)Publication
Age has a major effect on brain volume. However, the normative studies available are constrained by small sample sizes, restricted age coverage and significant methodological variability. These limitations introduce inconsistencies and may obscure or distort the lifespan trajectories of brain morphometry. In response, we capitalized on...
Uploaded on: March 24, 2023 -
June 13, 2023 (v1)Publication
The data presented in this paper describe supplementary material to the article entitled "Pharmacological treatment strategies for lowering prolactin in people with a psychotic disorder and hyperprolactinaemia: a systematic review and meta-analysis" [1]. Although raw data was published on the original article, additional raw data has been...
Uploaded on: June 15, 2023 -
October 3, 2022 (v1)Publication
Delineating the association of age and cortical thickness in healthy individuals is criti-cal given the association of cortical thickness with cognition and behavior. Previousresearch has shown that robust estimates of the association between age and brainmorphometry require large-scale studies. In response, we used cross-sectional datafrom...
Uploaded on: December 4, 2022 -
May 31, 2023 (v1)PublicationGene set enrichment analysis of pathophysiological pathways highlights oxidative stress in psychosis
Polygenic risk prediction remains an important aim of genetic association studies. Currently, the predictive power of schizophrenia polygenic risk scores (PRSs) is not large enough to allow highly accurate discrimination between cases and controls and thus is not adequate for clinical integration. Since PRSs are rarely used to reveal biological...
Uploaded on: June 2, 2023 -
July 12, 2022 (v1)Publication
The burden of large and rare copy number genetic variants (CNVs) as well as certain specific CNVs increase the risk of developing schizophrenia. Several cognitive measures are purported schizophrenia endophenotypes and may represent an intermediate point between genetics and the illness. This paper investigates the influence of CNVs on...
Uploaded on: March 25, 2023 -
April 4, 2023 (v1)Publication
The increasing availability of magnetic resonance imaging (MRI) datasets is boosting the interest in the application of machine learning in neuroimaging. A key challenge to the development of reliable machine learning models, and their translational implementation in real-word clinical practice, is the integration of datasets collected using...
Uploaded on: April 14, 2023 -
July 6, 2022 (v1)Publication
Based on the discovery by the Resilience Project (Chen R. et al. Nat Biotechnol 34:531–538, 2016) of rare variants that confer resistance to Mendelian disease, and protective alleles for some complex diseases, we posited the existence of genetic variants that promote resilience to highly heritable polygenic disorders1,0 such as schizophrenia....
Uploaded on: March 25, 2023 -
May 3, 2023 (v1)Publication
INTRODUCTION The cerebral cortex underlies our complex cognitive capabilities. Variations in human cortical surface area and thickness are associated with neurological, psychological, and behavioral traits and can be measured in vivo by magnetic resonance imaging (MRI). Studies in model organisms have identified genes that influence cortical...
Uploaded on: May 4, 2023 -
June 23, 2022 (v1)Publication
DNA methylation, which is modulated by both genetic factors and environmental exposures, may offer a unique opportunity to discover novel biomarkers of disease-related brain phenotypes, even when measured in other tissues than brain, such as blood. A few studies of small sample sizes have revealed associations between blood DNA methylation and...
Uploaded on: March 25, 2023 -
July 14, 2022 (v1)Publication
Recent evidence suggests that comorbidities between neuropsychiatric conditions and metabolic syndrome may precede and even exacerbate long-term side-effects of psychiatric medication, such as a higher risk of type 2 diabetes and cardiovascular disease, which result in increased mortality. In the present study we compare the expression of key...
Uploaded on: December 4, 2022