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Sophie Erhardt

Karolinska Institutet · SE
Area of research
Biological Psychiatry · Behavioral Neuroscience
Research interest
Research interests include Tryptophan and brain disorders, Stress Responses and Cortisol, Schizophrenia research and treatment, and Bipolar Disorder and Treatment.
h-index
53
citations
10,873
works
193
NIH funding
primary concept
email

Recent publications

The role of proinflammatory response and the kynurenine pathway in the association between childhood maltreatment and lifetime substance use disorder
Neurobiology of Stress 2026cited by 0position: middledoi
Kynurenic Acid and Promotion of Activity-Dependent Synapse Elimination in Schizophrenia
American Journal of Psychiatry 2025cited by 7position: middledoi
Cognitive Function and Variability in Antipsychotic Drug–Naive Patients With First-Episode Psychosis
JAMA Psychiatry 2024cited by 62position: middledoi
Neuroactive Kynurenines as Pharmacological Targets: New Experimental Tools and Exciting Therapeutic Opportunities
Pharmacological Reviews 2024cited by 43position: lastdoi
Central and peripheral kynurenine pathway metabolites in COVID-19: Implications for neurological and immunological responses
Brain Behavior and Immunity 2024cited by 15position: lastdoi
The Tryptophan Metabolite Indole-3-Propionic Acid Raises Kynurenic Acid Levels in the Rat Brain In Vivo
International Journal of Tryptophan Research 2024cited by 14position: middledoi
Biological Factors Underpinning Suicidal Behaviour: An Update
Brain Sciences 2023cited by 42position: middledoi
Critical Role of Insulin as an Immunomodulatory Target in Treatment Resistant Depression
Biological Psychiatry 2023cited by 0position: middledoi
Ketamine Associated Change in Anhedonia and Suicidal Ideation are Associated With Peripheral Immune Cell mTOR Expression and Kynurenine Levels and Treatment Resistant Depression
Biological Psychiatry 2023cited by 0position: middledoi
Cerebrospinal fluid concentration of complement component 4A is increased in first episode schizophrenia
Nature Communications 2022cited by 57position: middledoi
Elevated endogenous GDNF induces altered dopamine signalling in mice and correlates with clinical severity in schizophrenia
Molecular Psychiatry 2022cited by 38position: middledoi
Peripheral and central levels of kynurenic acid in bipolar disorder subjects and healthy controls
Translational Psychiatry 2019cited by 72position: lastdoi
Epidemiological, genetic, and clinical characterization by age of newly diagnosed acute myeloid leukemia based on an academic population-based registry study (AMLSG BiO)
Annals of Hematology 2017cited by 170position: middledoi
Lower levels of the glial cell marker TSPO in drug-naive first-episode psychosis patients as measured using PET and [11C]PBR28
Molecular Psychiatry 2017cited by 105position: middledoi
CSF GABA is reduced in first-episode psychosis and associates to symptom severity
Molecular Psychiatry 2017cited by 67position: middledoi
The kynurenine pathway in schizophrenia and bipolar disorder
Neuropharmacology 2016cited by 251position: firstdoi
An enzyme in the kynurenine pathway that governs vulnerability to suicidal behavior by regulating excitotoxicity and neuroinflammation
Translational Psychiatry 2016cited by 190position: lastdoi
Endurance exercise increases skeletal muscle kynurenine aminotransferases and plasma kynurenic acid in humans
American Journal of Physiology-Cell Physiology 2016cited by 171position: middledoi
Electroconvulsive therapy suppresses the neurotoxic branch of the kynurenine pathway in treatment-resistant depressed patients
Journal of Neuroinflammation 2016cited by 100position: lastdoi
Adaptive and Behavioral Changes in Kynurenine 3-Monooxygenase Knockout Mice: Relevance to Psychotic Disorders
Biological Psychiatry 2016cited by 63position: firstdoi
Direct effects of exercise on kynurenine metabolism in people with normal glucose tolerance or type 2 diabetes
Diabetes/Metabolism Research and Reviews 2016cited by 61position: middledoi
Tryptophan, kynurenine, and kynurenine metabolites: Relationship to lifetime aggression and inflammatory markers in human subjects
Psychoneuroendocrinology 2016cited by 28position: middledoi
Increased levels of IL-6 in the cerebrospinal fluid of patients with chronic schizophrenia — significance for activation of the kynurenine pathway
Journal of Psychiatry and Neuroscience 2015cited by 225position: middledoi
The role of inflammation in suicidal behaviour
Acta Psychiatrica Scandinavica 2015cited by 173position: middledoi
A genome-wide association study of kynurenic acid in cerebrospinal fluid: implications for psychosis and cognitive impairment in bipolar disorder
Molecular Psychiatry 2015cited by 102position: middledoi
Cerebrospinal fluid kynurenines in multiple sclerosis; relation to disease course and neurocognitive symptoms
Brain Behavior and Immunity 2015cited by 70position: middledoi
Skeletal Muscle PGC-1α1 Modulates Kynurenine Metabolism and Mediates Resilience to Stress-Induced Depression
Cell 2014cited by 720position: middledoi
A role for inflammatory metabolites as modulators of the glutamate N-methyl-d-aspartate receptor in depression and suicidality
Brain Behavior and Immunity 2014cited by 295position: middledoi
Imbalanced Kynurenine Pathway in Schizophrenia
International Journal of Tryptophan Research 2014cited by 115position: lastdoi
Low <scp>IL</scp>‐8 is associated with anxiety in suicidal patients: genetic variation and decreased protein levels
Acta Psychiatrica Scandinavica 2014cited by 87position: middledoi

Grants

No grants ingested yet.

Frequent collaborators

Carl M. Sellgren · Karolinska Institutet14 papers (2012–2025)Göran Engberg · Lithuanian Sports University13 papers (2012–2025)Lilly Schwieler · Karolinska Institutet12 papers (2014–2026)Lena Brundin · Michigan State University8 papers (2012–2023)Martin Samuelsson · Linköping University7 papers (2012–2016)Lil Träskman‐Bendz · Lund University6 papers (2012–2016)Funda Orhan · Karolinska Institutet6 papers (2014–2025)Mikael Landén · Karolinska Institutet6 papers (2012–2019)Maria Bhat · AstraZeneca (Finland)5 papers (2014–2016)Michel Goiny · Karolinska Institutet5 papers (2014–2017)Fredrik Piehl · Karolinska University Hospital5 papers (2015–2024)Ina Schuppe‐Koistinen · Karolinska Institutet4 papers (2014–2016)Simon Červenka · Uppsala University4 papers (2017–2024)Gilles J. Guillemin · UNSW Sydney4 papers (2012–2023)Magdalena E. Kegel · Karolinska Institutet3 papers (2014–2015)Helena Fatouros‐Bergman · Karolinska Institutet3 papers (2017–2024)Markus K. Larsson · Karolinska Institutet3 papers (2015–2016)Chai K. Lim · Macquarie University3 papers (2012–2016)Kristina Lundberg · Lund University3 papers (2012–2015)Mark A. Frye · Salk Institute for Biological Studies3 papers (2016–2023)