Viktoria Johansson

I am a psychiatrist and associate professor in psychiatry. My research interests are mainly within psychiatric epidemiology with a special focus on clinically oriented research questions.

Research qualifications: Docent

0000-0003-3775-7245

Contact

viktoria.johansson@umu.se

+46 90 786 89 54

Works at

Associate professor, senior consultant (attending) physician at Department of Clinical Sciences Section: Psychiatry

Norrlands universitetssjukhus, Umeå universitet, Klinisk vetenskap Umeå universitet, Klinisk vetenskap, 901 85 Umeå

Publications Publications

Whole genome sequencing study of identical twins discordant for psychosis

Translational Psychiatry, Springer Nature 2024, Vol. 14, (1)

Ormond, Cathal; Ryan, Niamh M.; Hedman, Anna M.; et al.

Intelligence, educational attainment, and brain structure in those at familial high-risk for schizophrenia or bipolar disorder

Human Brain Mapping, John Wiley & Sons 2022, Vol. 43, (1) : 414-430

de Zwarte, Sonja M. C.; Brouwer, Rachel M.; Agartz, Ingrid; et al.

Swedish large-scale schizophrenia study: Why do patients and healthy controls participate?

Schizophrenia Research, Vol. 228 : 360-366

Dufva, Ylva Eriksson; Westman, Henrietta; Khilbom, Ulrik; et al.

DNA methylation meta-analysis reveals cellular alterations in psychosis and markers of treatment-resistant schizophrenia

eLIFE, eLife Sciences Publications 2021, Vol. 10

Hannon, Eilis; Dempster, Emma L.; Mansell, Georgina; et al.

The quantified behavioral test failed to differentiate ADHD in adolescents with neurodevelopmental problems.

Journal of Attention Disorders, Sage Publications 2021, Vol. 25, (3) : 312-321

Johansson, Viktoria; Norén Selinus, Eva; Kuja-Halkola, Ralf; et al.

Twin study shows association between monocyte chemoattractant protein-1 and kynurenic acid in cerebrospinal fluid

European Archives of Psychiatry and Clinical Neuroscience, Springer 2020, Vol. 270, (7) : 933-938

Johansson, Viktoria; Erhardt, Sophie; Engberg, Göran; et al.

Medications for attention-deficit/hyperactivity disorder in individuals with or without coexisting autism spectrum disorder: analysis of data from the Swedish prescribed drug register

Journal of Neurodevelopmental Disorders, BioMed Central (BMC) 2020, Vol. 12, (1)

Johansson, Viktoria; Sandin, Sven; Chang, Zheng; et al.

The association between familial risk and brain abnormalities is disease specific: an ENIGMA-relatives study of schizophrenia and bipolar disorder

Biological Psychiatry, Elsevier 2019, Vol. 86, (7) : 545-556

de Zwarte, Sonja M. C.; Brouwer, Rachel M.; Agartz, Ingrid; et al.

The schizophrenia and bipolar twin study in Sweden (STAR)

Schizophrenia Research, Elsevier 2019, Vol. 204 : 183-192

Johansson, Viktoria; Hultman, Christina M.; Kizling, Isabelle; et al.

A population-based heritability estimate of bipolar disorder - In a Swedish twin sample

Psychiatry Research, Elsevier 2019, Vol. 278 : 180-187

Johansson, Viktoria; Kuja-Halkola, Ralf; Cannon, Tyrone D.; et al.

Prevalences of autoimmune diseases in schizophrenia, bipolar I and II disorder, and controls

Psychiatry Research, Elsevier 2017, Vol. 258 : 9-14

Cremaschi, Laura; Kardell, Mathias; Johansson, Viktoria; et al.

Utbredd kolonisering med vårdrelaterade S epidermidis på IVA

Läkartidningen, Sveriges läkarförbund 2017, Vol. 114, (9-10)

Johansson, Viktoria

Cerebrospinal fluid microglia and neurodegenerative markers in twins concordant and discordant for psychotic disorders.

European Archives of Psychiatry and Clinical Neuroscience, Springer 2017, Vol. 267, (5) : 391-402

Johansson, Viktoria; Jakobsson, Joel; Fortgang, Rebecca G.; et al.

Kynurenic acid and psychotic symptoms and personality traits in twins with psychiatric morbidity

Psychiatry Research, Elsevier 2017, Vol. 247 : 105-112

Kegel, Magdalena E.; Johansson, Viktoria; Wetterberg, Lennart; et al.

Depression, anxiety, and antidepressant treatment in women: association with in vitro fertilization outcome

Fertility and Sterility, Elsevier 2016, Vol. 105, (6) : 1594-1602.e3

Cesta, Carolyn E.; Viktorin, Alexander; Olsson, Henrik; et al.

Multiple sclerosis and psychiatric disorders: comorbidity and sibling risk in a nationwide Swedish cohort

Multiple Sclerosis Journal, Sage Publications 2014, Vol. 20, (14) : 1881-1891

Johansson, Viktoria; Lundholm, Cecilia; Hillert, Jan; et al.

Microparticles and microscopic structures in three fractions of fresh cerebrospinal fluid in schizophrenia: case report of twins

Schizophrenia Research, Elsevier 2013, Vol. 143, (1) : 192-197

Mobarrez, Fariborz; Nybom, Rolf; Johansson, Viktoria; et al.

Microscopic particles in two fractions of fresh cerebrospinal fluid in twins with schizophrenia or bipolar disorder and in healthy controls

PLOS ONE, Public Library of Science (PLoS) 2012, Vol. 7, (9)

Johansson, Viktoria; Nybom, Rolf; Wetterberg, Lennart; et al.

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