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Umeå University
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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

E-mail
viktoria.johansson@umu.se
Phone
+46 90 786 89 54

Works at

Affiliation
Associate professor, senior consultant (attending) physician at Department of Clinical Sciences Section: Psychiatry
Location
Norrlands universitetssjukhus, Umeå universitet, Klinisk vetenskap Umeå universitet, Klinisk vetenskap, 901 85 Umeå
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.
Polygenic risk scores and twin concordance for schizophrenia and bipolar disorder
JAMA psychiatry, American Medical Association (AMA) 2024, Vol. 81, (12) : 1246-1252
Song, Jie; Pasman, Joëlle A.; Johansson, Viktoria; 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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