Andreassen, Ole A.

Effects of copy number variations on brain structure and risk for psychiatric illness: Large‐scale studies from the ENIGMA working groups on CNVs

Sønderby, I. E., Ching, C. R. K., Thomopoulos, S. I., van der Meer, D., Sun, D., Villalon‐Reina, J. E., Agartz, I., Amunts, K., Arango, C., Armstrong, N. J., et al. (2022) · Human Brain Mapping

Genomic variations and chromosomal abnormalitiesGenetic Associations and Epidemiology

Cited by 67

Dose response of the 16p11.2 distal copy number variant on intracranial volume and basal ganglia

Sønderby, I. E., Gústafsson, Ó., Doan, N. T., Hibar, D. P., Martin-Brevet, S., Abdellaoui, A., Ames, D., Amunts, K., Andersson, M., Armstrong, N. J., et al. (2020) · Molecular Psychiatry

Genomic variations and chromosomal abnormalitiesGenetics and Neurodevelopmental Disorders

Cited by 66

More than nature and nurture, indirect genetic effects on children’s academic achievement are consequences of dynastic social processes

Nivard, M. G., Belsky, D. W., Harden, K. P., Baier, T., Andreassen, O. A., Ystrøm, E., van Bergen, E., & Lyngstad, T. H. (2024) · Nature Human Behaviour

Intergenerational and Educational Inequality StudiesGenetic Associations and Epidemiology

Cited by 65

Genome-wide association identifies the first risk loci for psychosis in Alzheimer disease

DeMichele-Sweet, M. A. A., Klei, L., Creese, B., Harwood, J. C., Weamer, E. A., McClain, L., Sims, R., Hernandez, I., Moreno-Grau, S., Tárraga, L., et al. (2021) · Molecular Psychiatry

Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatments

Cited by 64

Glutamate as a mediating transmitter for auditory hallucinations in schizophrenia: A 1H MRS study

Hugdahl, K., Craven, A. R., Nygård, M., Løberg, E.-M., Berle, J. Ø., Johnsen, E., Kroken, R., Specht, K., Andreassen, O. A., & Ersland, L. (2015) · Schizophrenia Research

Schizophrenia research and treatmentHallucinations in medical conditions

Cited by 64

Affective lability in patients with bipolar disorders is associated with high levels of childhood trauma

Aas, M., Aminoff, S. R., Vik Lagerberg, T., Etain, B., Agartz, I., Andreassen, O. A., & Melle, I. (2014) · Psychiatry Research

Bipolar Disorder and TreatmentChild Abuse and Trauma

Cited by 64

Resting-state high-frequency heart rate variability is related to respiratory frequency in individuals with severe mental illness but not healthy controls

Quintana, D. S., Elstad, M., Kaufmann, T., Brandt, C. L., Haatveit, B., Haram, M., Nerhus, M., Westlye, L. T., & Andreassen, O. A. (2016) · Scientific Reports

Heart Rate Variability and Autonomic ControlMental Health Research Topics

Cited by 61

The development of insight and its relationship with suicidality over one year follow-up in patients with first episode psychosis

Barrett, E. A., Mork, E., Færden, A., Nesvåg, R., Agartz, I., Andreassen, O. A., & Melle, I. (2015) · Schizophrenia Research

Schizophrenia research and treatmentSuicide and Self-Harm Studies

Cited by 60

Combining Polygenic Hazard Score With Volumetric MRI and Cognitive Measures Improves Prediction of Progression From Mild Cognitive Impairment to Alzheimer's Disease

Kauppi, K., Fan, C. C., McEvoy, L. K., Holland, D., Tan, C. H., Chen, C.-H., Andreassen, O. A., Desikan, R. S., Dale, A. M., & Initiative, T. A. D. N. (2018) · Frontiers in Neuroscience

Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatments

Cited by 60

Heart rate variability is associated with disease severity in psychosis spectrum disorders

Benjamin, B. R., Valstad, M., Elvsåshagen, T., Jönsson, E. G., Moberget, T., Winterton, A., Haram, M., Høegh, M. C., Lagerberg, T. V., Steen, N. E., et al. (2021) · Progress in Neuro-Psychopharmacology and Biological Psychiatry

Heart Rate Variability and Autonomic ControlSchizophrenia research and treatment

Cited by 52

Saliva oxytocin measures do not reflect peripheral plasma concentrations after intranasal oxytocin administration in men

Quintana, D. S., Westlye, L. T., Smerud, K. T., Mahmoud, R. A., Andreassen, O. A., & Djupesland, P. G. (2018) · Hormones and Behavior

Neuroendocrine regulation and behaviorOlfactory and Sensory Function Studies

Cited by 52

Genome-wide association study of 23,500 individuals identifies 7 loci associated with brain ventricular volume

Vojinovic, D., Adams, H. H., Jian, X., Yang, Q., Smith, A. V., Bis, J. C., Teumer, A., Scholz, M., Armstrong, N. J., Hofer, E., et al. (2018) · Nature Communications

Genetic Associations and EpidemiologyCerebrospinal fluid and hydrocephalus

Cited by 52

Risk variants and polygenic architecture of disruptive behavior disorders in the context of attention-deficit/hyperactivity disorder

Demontis, D., Walters, R. K., Rajagopal, V. M., Waldman, I. D., Grove, J., Als, T. D., Dalsgaard, S., Ribasés, M., Bybjerg-Grauholm, J., Bækvad-Hansen, M., et al. (2021) · Nature Communications

Attention Deficit Hyperactivity DisorderGenetic Associations and Epidemiology

Cited by 50

Candidate Gene Analysis of the Human Natural Killer-1 Carbohydrate Pathway and Perineuronal Nets in Schizophrenia: B3GAT2 Is Associated with Disease Risk and Cortical Surface Area

Kähler, A. K., Djurovic, S., Rimol, L. M., Brown, A. A., Athanasiu, L., Jönsson, E. G., Hansen, T., Gústafsson, Ó., Hall, H., Giegling, I., et al. (2011) · Biological Psychiatry

Schizophrenia research and treatmentGenetic Associations and Epidemiology

Cited by 48

Shared genetic architecture between irritable bowel syndrome and psychiatric disorders reveals molecular pathways of the gut-brain axis

Tesfaye, M., Jaholkowski, P., Hindley, G. F. L., Shadrin, A. A., Rahman, Z., Bahrami, S., Lin, A., Holen, B., Parker, N., Cheng, W., et al. (2023) · Genome Medicine

Gastrointestinal motility and disordersGenetic Associations and Epidemiology

Cited by 46

Altered systemic cortisol metabolism in bipolar disorder and schizophrenia spectrum disorders

Steen, N. E., Methlie, P., Lorentzen, S., Dieset, I., Aas, M., Nerhus, M., Haram, M., Agartz, I., Melle, I., Berg, J. P., et al. (2014) · Journal of Psychiatric Research

Stress Responses and CortisolBipolar Disorder and Treatment

Cited by 41

Influence of birth cohort on age of onset cluster analysis in bipolar I disorder

Bauer, M., Glenn, T., Alda, M., Andreassen, O. A., Angelopoulos, E., Ardau, R., Baethge, C., Bauer, R., Bellivier, F., Belmaker, R. H., et al. (2015) · European Psychiatry

Bipolar Disorder and TreatmentPersonality Disorders and Psychopathology

Cited by 39

Oxytocin system dysfunction as a common mechanism underlying metabolic syndrome and psychiatric symptoms in schizophrenia and bipolar disorders

Quintana, D. S., Dieset, I., Elvsåshagen, T., Westlye, L. T., & Andreassen, O. A. (2017) · Frontiers in Neuroendocrinology

Neuroendocrine regulation and behaviorSchizophrenia research and treatment

Cited by 39

Childhood trauma is associated with poorer social functioning in severe mental disorders both during an active illness phase and in remission

Hjelseng, I. V., Vaskinn, A., Ueland, T., Lunding, S. H., Reponen, E. J., Steen, N. E., Andreassen, O. A., & Aas, M. (2022) · Schizophrenia Research

Schizophrenia research and treatmentChild Abuse and Trauma

Cited by 29

Perceived and experienced stigma in first-episode psychosis: A 1-year follow-up study

Simonsen, C., Aminoff, S. R., Vaskinn, A., Barrett, E. A., Faerden, A., Ueland, T., Andreassen, O. A., Romm, K. L., & Melle, I. (2019) · Comprehensive Psychiatry

Mental Health Treatment and AccessSchizophrenia research and treatment

Cited by 28

Common variants in Alzheimer’s disease: Novel association of six genetic variants with AD and risk stratification by polygenic risk scores

de Rojas, I., Moreno-Grau, S., Tesi, N., Grenier-Boley, B., Andrade, V., Jansen, I., Pedersen, N. L., Stringa, N., Zettergren, A., Hernández, I., et al. (2019) · medRxiv

Alzheimer's disease research and treatmentsDementia and Cognitive Impairment Research

Cited by 28

Independent evidence for an association between general cognitive ability and a genetic locus for educational attainment

Trampush, J. W., Lencz, T., Knowles, E., Davies, G., Guha, S., Pe'er, I., Liewald, D. C., Starr, J. M., Djurovic, S., Melle, I., et al. (2015) · American Journal of Medical Genetics Part B: Neuropsychiatric Genetics

Genetic Associations and EpidemiologyCognitive Abilities and Testing

Cited by 24

Aversive Event Anticipation Affects Connectivity between the Ventral Striatum and the Orbitofrontal Cortex in an fMRI Avoidance Task

Bolstad, I., Andreassen, O. A., Reckless, G. E., Sigvartsen, N. P., Server, A., & Jensen, J. (2013) · PLoS ONE

Neural and Behavioral Psychology StudiesNeurotransmitter Receptor Influence on Behavior

Cited by 22

Patients with schizophrenia and bipolar disorder display a similar global gene expression signature in whole blood that reflects elevated proportion of immature neutrophil cells with association to lipid changes

Torsvik, A., Brattbakk, H.-R., Trentani, A., Holdhus, R., Stansberg, C., Bartz-Johannessen, C. A., Hughes, T., Steen, N. E., Melle, I., Djurovic, S., et al. (2023) · Translational Psychiatry

Schizophrenia research and treatmentTryptophan and brain disorders

Cited by 21