Blar i NTNU Open på forfatter "Larsen, Tor Ketil"
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Association between C-reactive protein levels and antipsychotic treatment during 12 months follow-up period after acute psychosis
Fathian, Farivar; Gjestad, Rolf; Kroken, Rune Andreas; Løberg, Else-Marie; Reitan, Solveig Merete Klæbo; Fleichhacker, W. Wolfgang; Rettenbacher, Maria; Larsen, Tor Ketil; Joa, Inge; Stabell, Lena Antonsen; Kjelby, Eirik; Sinkevicute, Igne; Alisauskiene, Renata; Steen, Vidar Martin; Johnsen, Erik (Peer reviewed; Journal article, 2022)Background - A potential role of inflammatory pathways in the pathology of schizophrenia has been suggested for at least a subgroup of patients. Elevated levels of the inflammatory marker C-reactive protein (CRP) have been ... -
The association between cytokines and psychomotor speed in a spectrum of psychotic disorders: A longitudinal study
Larsen, Jeanette Brun; Reitan, Solveig Merete Klæbo; Løberg, Else-Marie; Rettenbacher, Maria; Bruserud, Øystein; Larsen, Tor Ketil; Anda, Liss Gøril; Bartz-Johannessen, Christoffer; Johnsen, Erik; Kroken, Rune Andreas (Peer reviewed; Journal article, 2021)Background In schizophrenia, impaired psychomotor speed is a common symptom predicting worse functional outcome. Inflammation causes changes in white matter integrity, which may lead to reduced psychomotor speed. Therefore, ... -
Depression trajectories and cytokines in schizophrenia spectrum disorders - A longitudinal observational study
Hoprekstad, Gunnhild Eldhuset; Kjelby, Eirik; Gjestad, Rolf; Fathian, Farivar; Larsen, Tor Ketil; Reitan, Solveig Klæbo; Rettenbacher, Maria; Torsvik, Anja; Skrede, Silje; Johnsen, Erik; Kroken, Rune Andreas (Peer reviewed; Journal article, 2023)Depression occurs frequently in all phases of schizophrenia spectrum disorders. Altered activity in the immune system is seen in both depression and schizophrenia. We aimed to uncover depressive trajectories in a sample ... -
Obsessive-compulsive disorder (OCD) in patients with first- episode psychosis (FEP): A prospective study
Hagen, Kristen; Solem, Stian; Larsen, Tor Ketil; Joa, Inge; Kvale, Gerd; Hansen, Bjarne (Journal article; Peer reviewed, 2014) -
Prevalence and clinical characteristics of patients with obsessive-compulsive disorder in first-episode psychosis
Hagen, Kristen; Hansen, Bjarne; Joa, Inge; Larsen, Tor Ketil (Journal article; Peer reviewed, 2013)Background: Obsessive-compulsive disorder (OCD) in patients with psychotic disorders has been reported to be a frequent co-morbid disorder in patients with psychotic disorders. The aim of the study determine the prevalence ... -
Trajectories of response in schizophrenia-spectrum disorders: A one-year prospective cohort study of antipsychotic effectiveness
Drosos, Petros; Johnsen, Erik; Bartz-Johannessen, Christoffer; Larsen, Tor Ketil; Reitan, Solveig Klæbo; Rettenbacher, Maria; Kroken, Rune Andreas (Journal article; Peer reviewed, 2022)BACKGROUND: Antipsychotic drugs remain the mainstay of schizophrenia treatment; however, their effectiveness has been questioned, and it is not possible to predict the response to a specific antipsychotic drug in an ...