Research Topics
Genomes and GenesSpecies | Jim Van OsSummaryAffiliation: Maastricht University Country: The Netherlands Publications
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Publications
The impact of subclinical psychosis on the transition from subclinicial mania to bipolar disorderNil Kaymaz
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, PO BOX 616 DRT 10, 6200 MD Maastricht, The Netherlands
J Affect Disord 98:55-64. 2007..Little is known, however, about how these subclinical population phenotypes co-vary with and impact on each other...
No ecological effect modification of the association between negative life experiences and later psychopathology in adolescence: A longitudinal community study in adolescentsNicole Gunther
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, 6200 MD Maastricht, The Netherlands
Eur Psychiatry 22:296-304. 2007..The aim of the study was to examine the potential contribution of exposure to bullying and adverse life events to the development of psychopathology in adolescents, and possible effect modification by neighbourhood social capital...
Evidence that onset of psychosis in the population reflects early hallucinatory experiences that through environmental risks and affective dysregulation become complicated by delusionsFeikje Smeets
Department of Psychiatry and Psychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University Medical Centre, Maastricht, The Netherlands
Schizophr Bull 38:531-42. 2012....
Executive function does not predict coping with symptoms in stable patients with a diagnosis of schizophreniaMaarten Bak
Dept Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, Maastricht, The Netherlands
BMC Psychiatry 8:39. 2008....
Bipolar disorder and dopamine dysfunction: an indirect approach focusing on tardive movement syndromes in a naturalistic settingInge van Rossum
Eli Lilly Nederland, Medical Department, Houten, The Netherlands
BMC Psychiatry 9:16. 2009..An indirect approach to examine this issue was developed, focusing on associations between dopamine proxy measures observed in BD (dopamine-related clinical traits using tardive movement syndromes as dopamine proxy measure of reference)...
Are women better mindreaders? Sex differences in neural correlates of mentalizing detected with functional MRISören Krach
Department of Psychiatry und Psychotherapy, Section of Neuroimaging, Philipps University Marburg, Rudolf Bultmann Strasse 8, D 35039 Marburg, Germany
BMC Neurosci 10:9. 2009..Groups of men (n = 12) and women (n = 12) interacted in an iterated classical prisoner's dilemma forced choice situation with alleged human and computer partners who were outside the scanner...
Validation of remission criteria for schizophreniaJim Van Os
Department of Psychiatry and Neuropsychology, Maastricht University, P O Box 616 DRT 10, 6200 MD Maastricht, The Netherlands
Am J Psychiatry 163:2000-2. 2006..With longitudinal data of a representative patient group (N=317; median follow-up: 1,132 days), validity of the symptomatic remission criterion was investigated...
Evaluation of the Two-Way Communication Checklist as a clinical intervention. Results of a multinational, randomised controlled trialJim Van Os
Department of Psychiatry and Neuropsychology, European Graduate School of Neuroscience, Maastricht University, The Netherlands
Br J Psychiatry 184:79-83. 2004..Patients and doctors often have divergent views on care needs...
The environment and schizophrenia: the role of cannabis useCecile Henquet
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, European Graduate School of Neuroscience, Maastricht University, Maastricht, The Netherlands
Schizophr Bull 31:608-12. 2005..Potential new methods to directly link genetic liability to the effects of cannabis are discussed...
Is there a continuum of psychotic experiences in the general population?Jim Van Os
Department of Psychiatry and Neuropsychology, European Graduate School of Neuroscience, Maastricht University, The Netherlands
Epidemiol Psichiatr Soc 12:242-52. 2003..This paper reviews evidence for the continuity of psychotic symptoms with normal experiences, focusing on the symptoms of hallucinations and delusions...
Improvements in stable patients with psychotic disorders switched from oral conventional antipsychotics therapy to long-acting risperidoneJim Van Os
Maastricht University, Maastricht, The Netherlands
Int Clin Psychopharmacol 19:229-32. 2004....
[A psychosis proneness-persistence-impairment model of psychotic disorders]J van Os
vakgroep Psychiatrie, UMC Maastricht, Universiteit Maastricht, Maastricht
Tijdschr Psychiatr 50:77-83. 2008..Whether or not this will lead to a poor prognosis in terms of persistence and clinical need will depend on the interaction between environmental exposure and genetic risk...
Gene-environment interactions in schizophrenia: review of epidemiological findings and future directionsJim Van Os
Department of Psychiatry and Neuropsychology, School of Mental Health and Neuroscience, Maastricht University Medical Centre, EURON, SEARCH, Maastricht, The Netherlands
Schizophr Bull 34:1066-82. 2008....
Evidence that the Two-Way Communication Checklist identifies patient-doctor needs discordance resulting in better 6-month outcomeJ van Os
Department of Psychiatry and Neuropsychology, European Graduate School of Neuroscience, Maastricht University, Maastricht, The Netherlands
Acta Psychiatr Scand 118:322-6. 2008..To assess an intervention aimed at reducing patient-professional carer needs discordance...
Commentary on residential location papers by Whitfield et al. (2005) and Willemsen et al. (2005)Jim Van Os
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Network, Maastricht University, Maastricht, The Netherlands
Twin Res Hum Genet 8:318-9. 2005
Confirmation of synergy between urbanicity and familial liability in the causation of psychosisJim Van Os
Maastricht University, P O Box 616, 6200 MD Maastricht, The Netherlands
Am J Psychiatry 161:2312-4. 2004..This study replicated a previous report that there may be substantial synergism between urbanicity (a proxy environmental risk factor) and familial clustering of psychotic disorder (a proxy genetic risk factor)...
A systematic review and meta-analysis of the psychosis continuum: evidence for a psychosis proneness-persistence-impairment model of psychotic disorderJ van Os
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, Maastricht, The Netherlands
Psychol Med 39:179-95. 2009....
Standardized remission criteria in schizophreniaJ van Os
Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, The Netherlands
Acta Psychiatr Scand 113:91-5. 2006..Recent work has focussed on schizophrenia as a 'deficit' state but little attention has been paid to defining illness plasticity in terms of symptomatic remission...
The social, psychopathological and consumer context of rate of symptom improvement in acute maniaJim Van Os
Dept of Psychiatry and Neuropsychology, Maastricht University, European Graduate School of Neuroscience, PO Box 616, 6200, MD, Maastricht, The Netherlands
Soc Psychiatry Psychiatr Epidemiol 42:631-8. 2007..Knowledge of moderators of symptom improvement over time in acute mania improves predictability of individual patient outcomes. This study attempted to identify such moderators of the rate of symptom improvement...
The ecogenetics of schizophrenia: a reviewJ van Os
Department of Psychiatry and Neuropsychology, European Graduate School of Neuroscience, Maastricht University, The Netherlands
Schizophr Res 32:127-35. 1998..With the advent of molecular genetics, further knowledge about possible genotype-environment interactions is urgently required in order to develop and improve strategies for the prevention and early treatment of schizophrenia...
Psychosis research at Maastricht University, The NetherlandsJim Van Os
Department of Psychiatry and Neuropsychology, Maastricht University, The Netherlands
Br J Psychiatry 183:559-60. 2003
Self-reported psychosis-like symptoms and the continuum of psychosisJ van Os
Department of Psychiatry and Neuropsychology, European Graduate School of Neuroscience, Maastricht University, PO Box 616, 6200 MD Maastricht, The Netherlands
Soc Psychiatry Psychiatr Epidemiol 34:459-63. 1999..This study examined the hypothesis that the severity of positive psychotic symptoms increases from normality, through depression/anxiety states to clinical psychosis...
Strauss (1969) revisited: a psychosis continuum in the general population?J van Os
Department of Psychiatry and Neuropsychology, Maastricht University, European Graduate School of Neuroscience, PO Box 616, 6200 MD, Maastricht, The Netherlands
Schizophr Res 45:11-20. 2000..The boundaries of the psychosis phenotype may extend beyond the clinical concept of schizophrenia...
The environment and schizophreniaJim Van Os
European Graduate School for Neuroscience, SEARCH, Maastricht University Medical Centre, 6200 MD Maastricht, The Netherlands
Nature 468:203-12. 2010..Longitudinal research is needed to uncover gene-environment interplay that determines how expression of vulnerability in the general population may give rise to more severe psychopathology...
Cannabis use and psychosis: a longitudinal population-based studyJ van Os
Department of Psychiatry and Neuropsychology, European Graduate School of Neuroscience, Maastricht University, Maastricht, The Netherlands
Am J Epidemiol 156:319-27. 2002..001). Results confirm previous suggestions that cannabis use increases the risk of both the incidence of psychosis in psychosis-free persons and a poor prognosis for those with an established vulnerability to psychotic disorder...
Does the urban environment independently increase the risk for both negative and positive features of psychosis?Jim Van Os
Department of Psychiatry and Neuropsychology, Maastricht University, European Graduate School of Neuroscience, The Netherlands
Soc Psychiatry Psychiatr Epidemiol 37:460-4. 2002..Psychotic disorders are more common in urban environments. It is not known whether the increase in risk applies to both the positive and negative dimensions of psychosis...
2-COM: an instrument to facilitate patient-professional communication in routine clinical practiceJ van Os
Department of Psychiatry and Neuropsychology, European Graduate School of Neuroscience, Maastricht University, The Netherlands
Acta Psychiatr Scand 106:446-52. 2002..A simple patient-completed self-report instrument may facilitate patient-professional carer communication...
Do urbanicity and familial liability coparticipate in causing psychosis?Jim Van Os
Department of Psychiatry and Neuropshchology, azM Mondriaan Riagg RIBW Vijverdal Academic Centre, EURON, Maastricht University, The Netherlands
Am J Psychiatry 160:477-82. 2003..The urban environment and familial liability are risk factors for psychotic illness, but it is not known whether a biological synergism exists between these two proxy causes...
Evidence that familial liability for psychosis is expressed as differential sensitivity to cannabis: an analysis of patient-sibling and sibling-control pairsRene S Kahn
Department of Psychiatry and Psychology, Maastricht University Medical Centre, PO Box 616
Arch Gen Psychiatry 68:138-47. 2011..Individual differences in cannabis sensitivity may be associated with genetic risk for psychotic disorder...
SchizophreniaJim Van Os
Department of Psychiatry and Psychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University Medical Centre, Maastricht, Netherlands
Lancet 374:635-45. 2009..Although current treatments provide control rather than cure, long-term hospitalisation is not required and prognosis is better than traditionally assumed...
'Salience syndrome' replaces 'schizophrenia' in DSM-V and ICD-11: psychiatry's evidence-based entry into the 21st century?J van Os
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University Medical Centre, Maastricht, The Netherlands
Acta Psychiatr Scand 120:363-72. 2009..Japan was the first country to abandon the 19th century term of 'mind-splitting disease' (schizophrenia). Revisions of DSM and ICD are forthcoming. Should the rest of the world follow Japan's example?..
[Psychosis: from diagnosis to syndrome]Jim Van Os
Universitair Medisch Centrum Maastricht, afd Psychiatrie en Psychologie, Maastricht, The Netherlands
Ned Tijdschr Geneeskd 154:A1874. 2010..A better understanding of the biological mechanisms and the psychosocial factors underlying psychotic disorders may contribute to new treatments...
Are psychiatric diagnoses of psychosis scientific and useful? The case of schizophreniaJim Van Os
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University Medical Centre, Maastricht, The Netherlands
J Ment Health 19:305-17. 2010..Furthermore, the existence of two separate diagnostic systems in psychiatry, DSM and ICD, produces a bias that is conservative rather than anti-conservative, reducing the probability of non-cosmetic change...
Toward a world consensus on prevention of schizophreniaJim Van Os
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, European Graduate School of Neuroscience, Maastricht University, The Netherlands
Dialogues Clin Neurosci 7:53-67. 2005..Gaining insight into the cognitive and biological factors that drive the dimensional variation, including therapeutic interventions, is arguably more useful than sterile dichotomous prediction models...
The catechol-O-methyl transferase Val158Met polymorphism and experience of reward in the flow of daily lifeMarieke Wichers
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, Maastricht, The Netherlands
Neuropsychopharmacology 33:3030-6. 2008..Genetic moderation of ecological measures of reward experience is hypothesized to be of major relevance to the development of various behavioral disorders, including depression and addiction...
COMT Val158Met-stress interaction in psychosis: role of background psychosis riskDina Collip
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, School for Mental Health and NeuroScience MHeNS Maastricht University, Maastricht, The Netherlands
CNS Neurosci Ther 17:612-9. 2011....
The psychology of psychiatric genetics: evidence that positive emotions in females moderate genetic sensitivity to social stress associated with the BDNF Val-sup-6-sup-6Met polymorphismMarieke Wichers
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, Maastricht, The Netherlands
J Abnorm Psychol 117:699-704. 2008..Interdisciplinary research in psychology and psychiatric genetics may lead to the improvement of treatment choices in stress-related disorders...
Identifying at-risk states beyond positive symptoms: a brief task assessing how neurocognitive impairments impact on misrepresentation of the social world through blunted emotional appraisalMariana Galdos
Department of Psychiatry and Neuropsychology, Maastricht University Medical Centre, The Netherlands
Rev Bras Psiquiatr 33:s175-96. 2011..Early intervention efforts would be served by further elucidation of this mechanism...
Neurocognitive functioning as intermediary phenotype and predictor of psychosocial functioning across the psychosis continuum: studies in schizophrenia and bipolar disorderNienke Jabben
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, Maastricht, The Netherlands
J Clin Psychiatry 71:764-74. 2010....
Family-based analysis of genetic variation underlying psychosis-inducing effects of cannabis: sibling analysis and proband follow-upRuud van Winkel
Department of Psychiatry and Psychology, School of Mental Health and Neuroscience, Maastricht University Medical Centre, Maastricht, The Netherlands
Arch Gen Psychiatry 68:148-57. 2011..Individual differences exist in sensitivity to the psychotomimetic effect of cannabis; the molecular genetic basis underlying differential sensitivity remains elusive...
Evidence for a relationship between mentalising deficits and paranoia over the psychosis continuumDagmar Versmissen
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, PO BOX 616 VIJV, 6200 MD Maastricht, The Netherlands
Schizophr Res 99:103-10. 2008..This study wanted to assess an aspect of mentalising in four groups with different levels of psychosis vulnerability, and to examine associations between mentalising and symptoms of psychosis...
Explaining transitions over the hypothesized psychosis continuumLydia Krabbendam
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, Maastricht, University, The Netherlands
Aust N Z J Psychiatry 39:180-6. 2005....
Transition from stress sensitivity to a depressive state: longitudinal twin studyMarieke Wichers
Department of Psychiatry and Psychology, South Limburg Mental Health Research and Teaching Network, EURON, Vijverdalseweg 1, Concorde Building, Maastricht, The Netherlands
Br J Psychiatry 195:498-503. 2009..Daily-life stress sensitivity is associated with depression, but prospective data are lacking...
Do different psychotic experiences differentially predict need for care in the general population?Maarten Bak
Department of Psychiatry, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, The Netherlands
Compr Psychiatry 46:192-9. 2005..The pathway from subclinical psychotic experiences to need for care may depend on type of psychotic experience, level of associated distress, and previous experience of psychosis...
Genetic risk of depression and stress-induced negative affect in daily lifeMarieke Wichers
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, Vijverdalseweg 1, Concorde Building, Maastricht, The Netherlands
Br J Psychiatry 191:218-23. 2007..A bias to develop negative affect in response to daily life stressors may be an important depression endophenotype, but remains difficult to assess...
AKT1 moderation of cannabis-induced cognitive alterations in psychotic disorderRuud van Winkel
Department of Psychiatry and Psychology, School of Mental Health and Neuroscience, European Graduate School of Neuroscience EURON, South Limburg Mental Health Research and Teaching Network SEARCH, Maastricht University Medical Centre, Maastricht, The Netherlands
Neuropsychopharmacology 36:2529-37. 2011..The results suggest that long-term changes in cognition may mediate the risk-increasing effect of the AKT1 × cannabis interaction on psychotic disorder...
The wider social environment and changes in self-reported quality of life in the transition from late childhood to early adolescence: a cohort studyMarjan Drukker
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, Maastricht, The Netherlands
BMC Public Health 6:133. 2006..Therefore, the contribution of the neighbourhood environment to adolescents' quality of life and the course of these effects during the period of transition from childhood to early adolescence was examined...
Evidence that moment-to-moment variation in positive emotions buffer genetic risk for depression: a momentary assessment twin studyMarieke C Wichers
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, Maastricht, The Netherlands
Acta Psychiatr Scand 115:451-7. 2007..It was investigated whether positive affect (PA) buffers negative affect (NA) reactivity in response to stress and whether PA moderates the genetic predisposition to negative affect reactivity...
Development of depressed mood predicts onset of psychotic disorder in individuals who report hallucinatory experiencesLydia Krabbendam
Department of Psychiatry and Neuropsychology, Maastricht University, The Netherlands
Br J Clin Psychol 44:113-25. 2005..This study examined the hypothesis that the risk for onset of psychotic disorder in individuals with self-reported hallucinatory experiences would be higher in those who subsequently developed depressed mood than in those who did not...
Reduced cortical thickness as an outcome of differential sensitivity to environmental risks in schizophreniaPetra Habets
Department of Psychiatry and Psychology, School for Mental Health and Neuroscience, European Graduate School of Neuroscience, Maastricht University Medical Centre, Vijv1 Maastricht, The Netherlands
Biol Psychiatry 69:487-94. 2011..This study examined the impact of two environmental exposures associated with both schizophrenia and magnetic resonance imaging (MRI) cerebral alterations in models of cerebral cortical thickness...
The cumulative needs for care monitor: a unique monitoring system in the south of the NetherlandsMarjan Drukker
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, School for Mental Health and NeuroScience MHeNS, Maastricht University, Vijverdal, 6200 MD Maastricht, The Netherlands
Soc Psychiatry Psychiatr Epidemiol 45:475-85. 2010..This information can be used not only to plan treatment at the individual level, but also to conduct health services research at the group level...
Susceptibility to depression expressed as alterations in cortisol day curve: a cross-twin, cross-trait studyMarieke C Wichers
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, Vijverdalseweg 1, Concorde Building, Maastricht, Netherlands
Psychosom Med 70:314-8. 2008..Alteration of diurnal secretion of cortisol is a possible endophenotype of depression, as depressed patients show alterations in cortisol dynamics over the day...
Prevention of age-related changes in hippocampal levels of 5-methylcytidine by caloric restrictionLeonidas Chouliaras
School for Mental Health and Neuroscience, Department of Psychiatry and Neuropsychology, Faculty of Health, Medicine and Life Sciences, European Graduate School of Neuroscience, Maastricht University Medical Centre, Maastricht, The Netherlands
Neurobiol Aging 33:1672-81. 2012..These findings suggest a crucial role for DNA methylation in hippocampal aging and in the mediation of the beneficial effects of CR on aging...
A time-lagged momentary assessment study on daily life physical activity and affectMarieke Wichers
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, Maastricht, The Netherlands
Health Psychol 31:135-44. 2012..The current study examined the effects of physical activity on affective state. A primary and within-study replication sample was derived from twin pairs...
Meta-analysis of MTHFR gene variants in schizophrenia, bipolar disorder and unipolar depressive disorder: evidence for a common genetic vulnerability?Odette L J Peerbooms
Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, European Graduate School of Neuroscience, South Limburg Mental Health Research and Teaching Network, Maastricht University, Maastricht, The Netherlands
Brain Behav Immun 25:1530-43. 2011..This study provides evidence for shared genetic vulnerability for SZ, BPD and UDD mediated by MTHFR 677TT genotype, which is in line with epigenetic involvement in the pathophysiology of these psychiatric disorders...
Affectively salient meaning in random noise: a task sensitive to psychosis liabilityMariana Galdos
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, Maastricht, The Netherlands
Schizophr Bull 37:1179-86. 2011..The data suggest that the white noise task may be sensitive to psychometric and familial vulnerability for psychosis associated with alterations in top-down processing and/or salience attribution...
A real-life observational study of the effectiveness of FACT in a Dutch mental health regionMarjan Drukker
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, PO Box 616, location Vijverdal 6200 MD Maastricht, The Netherlands
BMC Psychiatry 8:93. 2008..The effectiveness of FACT was compared with standard care, with a particular focus on possible moderating effects of patient characteristics within the case mix in FACT...
Is processing speed predictive of functional outcome in psychosis?Nienke Jabben
Department of Psychiatry and Neuropsychology, Maastricht University, P O BOX 616 VIJV, 6200 MD, Maastricht, The Netherlands
Soc Psychiatry Psychiatr Epidemiol 43:437-44. 2008..To investigate the contribution of processing speed in the prediction of various domains of outcome in psychosis...
Diagnostic considerations regarding pediatric delirium: a review and a proposal for an algorithm for pediatric intensive care unitsJan N M Schieveld
Division of Child and Adolescent Psychiatry, Department of Psychiatry and Psychology, European Graduate School of Neuroscience, SEARCH, Maastricht University Medical Centre, 6202 AZ Maastricht, The Netherlands
Intensive Care Med 35:1843-9. 2009..If delirium is not diagnosed, it is unlikely that any effort will be made to reverse it. Given evidence for under-diagnosis, tools that aid recognition are required...
Residential instability in socioeconomically deprived neighbourhoods, good or bad?Marjan Drukker
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, P O Box 616 PAR45, 6200 MD Maastricht, The Netherlands
Health Place 11:121-9. 2005..Thus, when accounting for interaction effects, residential instability appeared to protect against negative effects of neighbourhood poverty and, therefore, may be beneficial for residents' quality of life...
Emotional experience and estimates of D2 receptor occupancy in psychotic patients treated with haloperidol, risperidone, or olanzapine: an experience sampling studyJohan Lataster
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University Medical Center, Maastricht, The Netherlands
J Clin Psychiatry 72:1397-404. 2011..The present study investigates the differential effects of relatively tight versus looser binding drugs on the experience of emotions in the realm of daily life...
Stress-related negative affectivity and genetically altered serotonin transporter function: evidence of synergism in shaping risk of depressionNele Jacobs
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, 6200 MD Maastricht, The Netherlands
Arch Gen Psychiatry 63:989-96. 2006....
Impairment of self-monitoring: part of the endophenotypic risk for psychosisDagmar Versmissen
Department of Psychiatry and Neuropsychology, Maastricht University, PO BOX 616 VIJV, 6200 MD Maastricht, The Netherlands
Br J Psychiatry Suppl 51:s58-62. 2007..A disorder of self-monitoring may underlie the positive symptoms of psychosis. The cognitive mechanisms associated with these symptoms may also be detectable in individuals at risk of psychosis...
Systematic monitoring of needs for care and global outcomes in patients with severe mental illnessMarjan Drukker
Department of Psychiatry and Psychology, School for Mental Health and NeuroScience MHeNS, Maastricht University, The Netherlands
BMC Psychiatry 10:36. 2010....
The incidence and outcome of subclinical psychotic experiences in the general populationManon Hanssen
Department of Psychiatry and Neuropsychology, Universiteit Maastricht, The Netherlands
Br J Clin Psychol 44:181-91. 2005..Emotional appraisal and degree of intrusiveness of psychotic experiences are important modifiers not for continuity per se but for clinical outcome specifically...
Investigating the association between neurocognition and psychosis in bipolar disorder: further evidence for the overlap with schizophreniaNienke Jabben
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, Maastricht, The Netherlands
Bipolar Disord 11:166-77. 2009..In this study, we investigated whether this model can be extended to bipolar disorder by testing the hypothesis that neurocognitive functioning is inversely related to positive psychotic symptoms in bipolar disorder...
MTHFR and risk of metabolic syndrome in patients with schizophreniaRuud van Winkel
Department of Psychiatry and Neuropsychology, EURON, South Limburg Mental Health Research and Teaching Network, Maastricht University Medical Centre, PO Box 616, 6200 MD Maastricht, The Netherlands
Schizophr Res 121:193-8. 2010..Meta-analyses have implicated polymorphisms in MTHFR, encoding a critical enzyme in folate and homocysteine metabolism, in both schizophrenia and CVD...
Early expression of negative/disorganized symptoms predicting psychotic experiences and subsequent clinical psychosis: a 10-year studyMaria de Gracia Dominguez
Department of Psychiatry and Neuropsychology, School of Mental Health and Neuroscience, Maastricht University Medical Centre, The Netherlands
Am J Psychiatry 167:1075-82. 2010..The epidemiological predictions of this model were tested...
Subjective experience of cognitive failures as possible risk factor for negative symptoms of psychosis in the general populationStefanie Pfeifer
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, PO BOX 616 VIJV1, 6200 MD, Maastricht, The Netherlands
Schizophr Bull 35:766-74. 2009..The aim of this study was to examine whether proneness to subjective cognitive failure (cognitive based mistakes) increases the risk for the development of symptoms of psychosis and to what degree any association was familial...
An experimental study of catechol-o-methyltransferase Val158Met moderation of delta-9-tetrahydrocannabinol-induced effects on psychosis and cognitionCecile Henquet
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, Maastricht, The Netherlands
Neuropsychopharmacology 31:2748-57. 2006..The association between cannabis and psychosis may represent higher order gene-environment and gene-gene interactions...
Hearing impairment and psychosis revisitedViviane Thewissen
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, The Netherlands
Schizophr Res 76:99-103. 2005..0, 95% CI: 1.4, 6.2) These results confirm previous findings of an association between hearing impairments and psychosis and show that this association can also be found prospectively in a nonclinical population...
The BDNF Val(66)Met x 5-HTTLPR x child adversity interaction and depressive symptoms: An attempt at replicationMarieke Wichers
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, Maastricht, The Netherlands
Am J Med Genet B Neuropsychiatr Genet 147:120-3. 2008..Higher order interaction effects involving BDNF Val(66)Met, 5-HTTLPR and childhood adversity may contribute to the etiology of depressive illness...
A community study of psychosocial functioning and weight in young children and adolescentsMarjan Drukker
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University Medical Centre, PO Box 616, Maastricht 6200 MD, The Netherlands
Int J Pediatr Obes 4:91-7. 2009....
Do symptom dimensions or categorical diagnoses best discriminate between known risk factors for psychosis?Judith Allardyce
Dept of Psychiatry and Neuropsychology, Maastricht University, P O Box 616 location DOT10, 6200 MD Maastricht, The Netherlands
Soc Psychiatry Psychiatr Epidemiol 42:429-37. 2007..Then, assess the comparative usefulness of the dimensional and categorical representations of psychosis in discriminating between demographic and pre-morbid risk factors...
Mediators of neighbourhood socioeconomic deprivation and quality of lifeMarjan Drukker
Dept. of Psychiatry and Neuropsychology, South Limburg Mental Health Research Network, EURON, Maastricht University, Maastricht, The Netherlands
Soc Psychiatry Psychiatr Epidemiol 38:698-706. 2003..Lifestyle also had mediating effects. CONCLUSION: Neighbourhood socioeconomic deprivation variables may impact on the individual through cognitive mechanisms that are associated with appraisal of the wider social environment...
Are cognitive impairments associated with sensitivity to stress in schizophrenia? An experience sampling studyInez Myin-Germeys
Department of Psychiatry and Neuropsychology, European Graduate School of Neuroscience, Maastricht University, The Netherlands
Am J Psychiatry 159:443-9. 2002..Patients with a diagnosis of schizophrenia display cognitive impairments and abnormal sensitivity to stress. However, little is known about the relationship between these two endophenotypes...
Sex differences in psychosis: normal or pathological?Janneke Spauwen
Department of Psychiatry and Neuropsychology, Maastricht University, European Graduate School of Neuroscience, PO BOX 616 DRT 10, 6200 MD Maastricht, The Netherlands
Schizophr Res 62:45-9. 2003..The interpretation of this key epidemiological finding crucially depends on whether similar age-related sex differences exist in the expression of associated, subclinical psychosis-like experiences...
Momentary assessment research in psychosisMargreet Oorschot
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, 6200 MD Maastricht, The Netherlands
Psychol Assess 21:498-505. 2009..Finally, the study of symptomatic variability may fuel new research into psychological models and treatment of psychosis and the study of the person-environment interplay may foster new Gene x Environment interaction studies...
Are psychotic psychopathology and neurocognition orthogonal? A systematic review of their associationsMaria de Gracia Dominguez
Department of Psychiatry and Neuropsychology, Maastricht University, The Netherlands
Psychol Bull 135:157-71. 2009..This association suggests that differential latent cerebral mechanisms underlie the cluster of disorganized and negative symptoms versus that of positive and affective symptoms...
Does urbanicity shift the population expression of psychosis?Janneke Spauwen
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, P O Box 616 DRT 10, 6200 MD Maastricht, The Netherlands
J Psychiatr Res 38:613-8. 2004..Other causal influences may be required to make the transition to schizophrenia in adult life...
Determinants of occurrence and recovery from hallucinations in daily lifePhilippe Delespaul
Maastricht University, Department of Psychiatry and Neuropsychology, European Graduate School of Neuroscience, The Netherlands
Soc Psychiatry Psychiatr Epidemiol 37:97-104. 2002..CONCLUSION: The results suggest that hallucinating experiences are subject to a host of contextual influences. Understanding variation offers useful insights for therapy...
Psychosis risk as a function of age at onset: a comparison between early- and late-onset psychosis in a general population sampleSebastian Kohler
Department of Psychiatry and Neuropsychology, Sth Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, P O BOX 616 VIJV, 6200, MD, Maastricht, The Netherlands
Soc Psychiatry Psychiatr Epidemiol 42:288-94. 2007..The aims of this study were to calculate the incidence of non-affective, non-organic psychotic symptoms across the life span and to explore the contribution of different sets of risk factors in relation to age at onset...
Can the social environment cause schizophrenia?Jim Van Os
Department of Psychiatry and Neuropsychology, azM Mondriaan Riagg Vijverdal Academic Centre, Maastricht University, European Graduate School of Neuroscience, Maastricht, The Netherlands
Br J Psychiatry 182:291-2. 2003
Evidence that the urban environment specifically impacts on the psychotic but not the affective dimension of bipolar disorderNil Kaymaz
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, P.O. Box 616 (DRT 10, 6200 MD, Maastricht, The Netherlands
Soc Psychiatry Psychiatr Epidemiol 41:679-85. 2006....
Childhood trauma and emotional reactivity to daily life stress in adult frequent attenders of general practitionersJean-Paul Glaser
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, Maastricht, The Netherlands
J Psychosom Res 61:229-36. 2006..The finding that emotional stress reactivity is most pronounced for subjects who experienced trauma early in life confirms prior evidence suggesting that the effects of trauma are more detrimental when trauma occurs at a younger age...
MTHFR genotype and differential evolution of metabolic parameters after initiation of a second generation antipsychotic: an observational studyRuud van Winkel
Department of Psychiatry and Neuropsychology, EURON, Maastricht University Medical Centre, Maastricht, The Netherlands
Int Clin Psychopharmacol 25:270-6. 2010..A1298C allele carriers consistently displayed the most unfavorable evolution of metabolic parameters. Thus, MTHFR A1298C genotype may explain part of the individual liability to metabolic disturbances in patients with schizophrenia...
Sex differences in symptoms of psychosis in a non-selected, general population sampleNadja Maric
Department of Psychiatry and Neuropsychology, azM/Mondriaan/Riagg/RIBW/Vijverdal Academic Centre, European Graduate School of Neuroscience, Maastricht University, P.O. Box 616 (DRT 10, 6200 MD Maastricht, The Netherlands
Schizophr Res 63:89-95. 2003..The higher rates of positive psychotic experiences seen in women may be secondary to differences in the rate of affective symptoms...
Children's mental health service use, neighbourhood socioeconomic deprivation, and social capitalJikke van der Linden
Dept. of Psychiatry and Neuropsychology, EURON, South Limburg Mental Health Research Network, Maastricht University, Maastricht, The Netherlands
Soc Psychiatry Psychiatr Epidemiol 38:507-14. 2003..Effects of deprivation on children's mental health cannot be interpreted without taking into account the context of social capital...
Income inequality at neighbourhood level and quality of life--a contextual analysisMarjan Drukker
Dept. of Psychiatry and Neuropsychology South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, Maastricht, The Netherlands
Soc Psychiatry Psychiatr Epidemiol 39:457-63. 2004..Income inequality may only have an effect in larger areas containing sufficient socioeconomic contrast...
When does experience of psychosis result in a need for care? A prospective general population studyMaarten Bak
Department of Psychiatry and Neuropsychology, azM Mondriaan RIBW Riagg Vijverdal Academic Centre, EURON, Maastricht University, The Netherlands
Schizophr Bull 29:349-58. 2003....
Evidence that onset of clinical psychosis is an outcome of progressively more persistent subclinical psychotic experiences: an 8-year cohort studyM D G Dominguez
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University Medical Centre, PO BOX 616 DRT 10, 6200 MD Maastricht, The Netherlands
Schizophr Bull 37:84-93. 2011..This may be summarized descriptively as a psychosis proneness-persistence-impairment model of psychotic disorder...
Searching for a structural endophenotype in psychosis using computational morphometryMachteld Marcelis
Department of Psychiatry and Neuropsychology, European Graduate School of Neuroscience, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
Psychiatry Res 122:153-67. 2003..Patients with psychosis and first-degree healthy relatives of patients with psychosis show cerebellar abnormalities, which may constitute a marker of genetic transmission...
Instability in self-esteem and paranoia in a general population sampleViviane Thewissen
Dept of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, P O Box 616 DRT 10, 6200, MD, Mastricht, The Netherlands
Soc Psychiatry Psychiatr Epidemiol 42:1-5. 2007..A plausible explanation for these inconsistencies is that self-esteem is unstable in paranoid individuals...
Social needs in daily life in adults with Pervasive Developmental DisordersAnouk Hintzen
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, P O Box 616, 6200 MD, Maastricht University Medical Centre, The Netherlands
Psychiatry Res 179:75-80. 2010..Therapeutic interventions should aim at decreasing negative affect and anxiety in social interactions possibly by improving social skills to fulfil the existing social needs in adults with PDD...
Schizophrenia and urbanicity: a major environmental influence--conditional on genetic riskLydia Krabbendam
Department of Psychiatry and Neuropsychology, Maastricht University, The Netherlands
Schizophr Bull 31:795-9. 2005....
The use of the Camberwell Assessment of Need in treatment: what unmet needs can be met?Marjan Drukker
Dept of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, P O Box 616, Location Vijverdal, 6200 MD Maastricht, The Netherlands
Soc Psychiatry Psychiatr Epidemiol 43:410-7. 2008..A useful way of operationalising treatment effects in routine outcome assessment data may be to assess the rate at which unmet needs at time point t change to met needs at time point t + 1...
Hospital comorbidity bias and the concept of schizophreniaMaarten Bak
Dept of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, Maastricht, The Netherlands
Soc Psychiatry Psychiatr Epidemiol 40:817-21. 2005..The direction of any dimensional comorbidity bias in psychotic illness was assessed in a longitudinal analysis of the psychopathology of patients assessed both inside and outside the hospital...
Genetic moderation of CO2-induced fear by 5-HTTLPR genotypeKoen Schruers
Academic Anxiety Center, Maastricht University, Maastricht, The Netherlands
J Psychopharmacol 25:37-42. 2011..These results are in line with current theories on the role of 5-HT in both panic and respiration...
Cannabis use and expression of mania in the general populationCecile Henquet
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, Maastricht, The Netherlands
J Affect Disord 95:103-10. 2006..In order to investigate the association between exposure to cannabis and subsequent development of manic symptoms whilst controlling for psychotic symptoms, a longitudinal population-based study was carried out...
Associations between COMTVal158Met polymorphism and cognition: direct or indirect effects?Lydia Krabbendam
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, PO BOX 616 VIJV, 6200 MD Maastricht, The Netherlands
Eur Psychiatry 21:338-42. 2006..This study examined (i) to what degree RTV pertaining to tasks of varying cognitive complexity would be associated with increased risk for schizophrenia and (ii) to what degree this would be mediated by Val loading...
Familial covariation of the subclinical psychosis phenotype and verbal fluency in the general populationLydia Krabbendam
Department of Psychiatry and Neuropsychology, South Limburg Mental Health Research and Teaching Network, EURON, Maastricht University, PO Box 616 PAR 45, 6200 MD Maastricht, The Netherlands
Schizophr Res 74:37-41. 2005..This study examined to what degree the subclinical psychosis phenotype in the general population shows similar familial continuity with cognition, measured with a verbal fluency test, and whether this was similar for men and women...
