Understanding Lifespan Trajectories of Social Cognition, Brain Microstructure and Iron Dysregulation in Schizophrenia
SilverMinds - Lifespan Trajectories of Social Cognition and Iron Dysregulation in Schizophrenia
This study aims to better understand how schizophrenia may affect social thinking, emotion regulation, brain function, and biological processes over time.
Two groups will take part in the study:
- people diagnosed with schizophrenia
- healthy adults without schizophrenia
Participants in both groups will complete a series of behavioral tasks and questionnaires. These will assess abilities such as understanding other people, processing social information, and regulating emotions. For participants with schizophrenia, we will also assess clinical symptoms and their severity.
The study includes three assessment visits:
- Baseline: at the beginning of the study
- 12-month follow-up: approximately one year later
- 24-month follow-up: approximately two years later
At all three visits, participants will complete behavioral tests and questionnaires, and blood and hair samples will be collected. These samples may help researchers investigate biological factors that are related to mental health, stress, and changes over time.
Participants will also undergo an MRI brain scan at the baseline visit and again at the 12-month follow-up.
People with schizophrenia may experience changes in thinking, emotions, social functioning, physical health, and brain function across adulthood. However, we still do not fully understand how these changes develop over time or how they differ from normal aging.
By comparing people with schizophrenia with healthy adults of different ages and following them over time, we can study possible differences in aging trajectories. This means examining whether certain abilities, symptoms, biological markers, or brain characteristics change differently with age in people with schizophrenia.
The study uses an accelerated longitudinal design. Instead of following one group of people for many decades, researchers recruit participants from different age groups and follow them for a shorter period. Combining information across these age groups can help researchers estimate longer-term patterns of change.
Aperçu de l'étude
Statut
Statut
Les conditions
Les conditions
Type d'étude
Type d'étude
Inscription (Estimé)
Inscription
Contacts et emplacements
Coordonnées de l'étude
Coordonnées de l'étude
- Nom: Christopher Schaar, M.Sc.
- Numéro de téléphone: 0043 512 9003 81298
- E-mail: christopher.schaar@i-med.ac.at
Lieux d'étude
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Tyrol
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Innsbruck, Tyrol, L'Autriche, 6020
- Recrutement
- Department of Psychiatry, Psychotherapy, Psychosomatics and Medical Psychology; Medical University of Innsbruck
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Contact:
- Alexandra Schlögl
- Numéro de téléphone: 0043 50 504 23669
- E-mail: alexandra.schloegl@tirol-kliniken.at
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Critères de participation
Critère d'éligibilité
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
Méthode d'échantillonnage
Population étudiée
Participants with SZ will be recruited through multiple clinical pathways to ensure adequate sample size and representativeness across the adult lifespan. The primary recruitment source is the specialized outpatient clinic for SZ spectrum disorders at the Department of Psychiatry, MUI, which serves a large catchment area and maintains detailed diagnostic records. Additional participants will be recruited through a collaborating psychiatric hospital and office-based psychiatrists and psychosocial service providers in the region, with whom the Dep. of Psychiatry maintains established referral networks. Patients in the SZ group must have a DSM-5 diagnosis of schizophrenia confirmed by their treating psychiatrist. HC participants will be recruited through advertisements in online platforms, social media, and community outreach.
La description
Inclusion criteria (all participants):
age 18-70 years at baseline; normal or corrected-to-normal vision; sufficient hearing; fluency in German; willingness and ability to understand and comply with study procedures. Participants must either be healthy adults without any mental health disorder (HC) or have a confirmed DSM-5 diagnosis of SZ.
Inclusion criteria (SZ only):
clinical stability at assessment, defined as no clinically significant change in psychopathological symptoms and no modification of pharmacotherapy for at least three months prior to study entry, as confirmed by the treating psychiatrist; full remission is not required.
Exclusion criteria (all participants):
incapacity to consent; current or lifetime history of brain surgery or epilepsy; MRI contraindications (unremovable metal parts in the upper body, active implants, claustrophobia); current or past substance abuse disorder (excluding caffeine and nicotine); pregnancy.
Exclusion criteria (HC only):
any current or lifetime Axis I psychiatric disorder; first-degree relative with an Axis I disorder; any neurological disorder or other mental health condition; current or past use of psychotropic medication.
Additional Eligibility Criteria for Cycle-Timed Neuroimaging:
To minimize hormonal confounding of emotion-regulation-related neural measures, menstruating female participants will be scanned in the early follicular phase (cycle days 1-6), requiring regular menstrual cycles (21-35 days) and a negative pregnancy test at relevant visits.
Use of hormonal contraception will be recorded.
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Modèles d'observation: COHORT
- Perspectives temporelles: PROSPECTIVE
Nombre de groupes / cohortes
Cohortes et interventions
Groupe / CohorteGroupe / Cohorte |
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Schizophrenia Group
Group of people with a diagnosis of schizophrenia confirmed by their treating psychiatrist. |
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Healthy control group
Group absent of any Axis-I Diagnosis |
Que mesure l'étude ?
Principaux critères de jugement
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Change in Theory of Mind performance
Délai: Baseline, 12 months, and 24 months
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Theory of Mind will be assessed using the EmpaToM task. The outcome will include performance-based indices of cognitive and affective Theory of Mind. Higher scores indicate better ability to infer and understand the mental states of others. |
Baseline, 12 months, and 24 months
|
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Change in attributional style
Délai: Baseline, 12 months, and 24 months
|
Attributional style will be assessed using the Internal, Personal and Situational Attributions Questionnaire-Revised. The outcome will measure tendencies to attribute positive and negative social events to internal, personal-external, or situational-external causes; aswell as monocausal-inference-style. |
Baseline, 12 months, and 24 months
|
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Change in emotion recognition performance
Délai: Baseline, 12 months, and 24 months
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Emotion recognition will be assessed using the DiagnosIS Emotion Recognition Task. The outcome will measure accuracy in identifying facial emotional expressions. Higher scores indicate better emotion recognition performance. |
Baseline, 12 months, and 24 months
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Change in Emotion Regulation Choice
Délai: Baseline, 12 months, 24 months
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The Emotion Regulation Choice Task is a behavioral paradigm used to examines whether individuals adapt their choice of emotion regulation strategy according to the intensity of negative emotional stimuli. It will be used to assess the change in the degree to which strategy choice changes as a function of emotional intensity. |
Baseline, 12 months, 24 months
|
Mesures de résultats secondaires
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Change in reflective functioning
Délai: Baseline, 12 months, and 24 months
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Reflective functioning will be assessed using the Reflective Functioning Questionnaire. The outcome will measure certainty and uncertainty about mental states. Scores will be analyzed according to the scoring rules of the instrument. |
Baseline, 12 months, and 24 months
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Change in self reported Emotion Regulation
Délai: Baseline, 12 months, 24 months
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Self reported emotion regulation will be assessed using the Emotion Regulation Questionnaire (ERQ). The ERQ is a 10-item self-report measure assessing the habitual use of two emotion-regulation strategies: cognitive reappraisal and expressive suppression. |
Baseline, 12 months, 24 months
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Change in global cognitive functioning
Délai: Baseline, 12 months, and 24 months
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Global cognition will be assessed using the Screen for Cognitive Impairment in Psychiatry. The outcome will provide a standardized measure of cognitive functioning across domains including verbal learning, working memory, verbal fluency, and processing speed. Higher scores indicate better cognitive performance. |
Baseline, 12 months, and 24 months
|
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Change in daily functioning and disability
Délai: Baseline, 12 months, and 24 months
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Daily functioning and disability will be assessed using the World Health Organization Disability Assessment Schedule 2.0. The outcome will measure functioning across cognition, mobility, self-care, interpersonal relationships, life activities, and participation in society. Higher scores indicate greater disability. |
Baseline, 12 months, and 24 months
|
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Change in brain iron distribution measured by quantitative susceptibility mapping
Délai: Baseline and 12 months
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Brain iron distribution will be assessed using quantitative susceptibility mapping (QSM) derived from multi-echo gradient echo MRI. |
Baseline and 12 months
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Change in R2* relaxometry measures of brain iron-sensitive signal
Délai: Baseline and 12 months
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R2* values will be derived from multi-echo gradient echo MRI as an iron-sensitive neuroimaging measure. |
Baseline and 12 months
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Change in white matter microstructure
Délai: Baseline and 12 months
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White matter microstructure will be assessed using diffusion-weighted MRI. Outcomes will include fractional anisotropy, mean diffusivity, radial diffusivity, and axial diffusivity. |
Baseline and 12 months
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Change in resting-state functional connectivity
Délai: Baseline and 12 months
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Resting-state functional connectivity will be assessed using resting-state functional MRI. |
Baseline and 12 months
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Change in extracellular vesicle-derived redox markers
Délai: Baseline, 12 months, and 24 months
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Neuronally derived extracellular vesicles will be isolated from plasma samples. |
Baseline, 12 months, and 24 months
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Change in hair proteomic signatures
Délai: Baseline, 12 months, and 24 months
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Hair samples will be analyzed using untargeted proteomic profiling. Outcomes will include proteomic signature related to oxidative stress, antioxidant defense, inflammation, mitochondrial bioenergetics, systemic stress, and biological aging. |
Baseline, 12 months, and 24 months
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Change in hair cortisol concentration
Délai: Baseline, 12 months, and 24 months
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Hair cortisol concentration will be measured from scalp hair samples as an index of cumulative hypothalamic-pituitary-adrenal axis activity over the preceding months. Higher values indicate higher cumulative cortisol exposure. |
Baseline, 12 months, and 24 months
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Change in psychopathological symptom severity
Délai: Baseline, 12 months, and 24 months
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Psychopathological symptoms in participants with schizophrenia will be assessed using the Positive and Negative Syndrome Scale. The outcome will include total and subscale scores for positive symptoms, negative symptoms, and general psychopathology. Higher scores indicate greater symptom severity. |
Baseline, 12 months, and 24 months
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Change in negative symptom severity
Délai: Baseline, 12 months, and 24 months
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Negative symptoms will be assessed using the Brief Negative Symptom Scale. The outcome will measure negative symptom domains including anhedonia, asociality, avolition, blunted affect, and alogia. Higher scores indicate greater negative symptom severity. |
Baseline, 12 months, and 24 months
|
Collaborateurs et enquêteurs
Parrainer
Parrainer
Collaborateurs
Collaborateurs
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Début de l'étude
Achèvement primaire (Estimé)
Achèvement primaire
Achèvement de l'étude (Estimé)
Achèvement de l'étude
Dates d'inscription aux études
Première soumission
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Première publication
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour publiée
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
- la schizophrénie
- cognition sociale
- Études longitudinales
- Imagerie par résonance magnétique
- Stress oxydatif
- Régulation des émotions
- résultat fonctionnel
- Dysfonctionnement cognitif
- Glutathion
- Symptômes négatifs
- Fonctionnement psychosocial
- Vésicules extracellulaires
- Théorie de l'esprit
- Reconnaissance des émotions
- Cartographie quantitative de la sensibilité
- Brain iron
- accelerated longitudinal design
- age trajectory
- lifespan
- Redox Regulation
- Hair Proteomics
- Attributional Style
- NDEV
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
Autres numéros d'identification d'étude
- SilverMinds
Plan pour les données individuelles des participants (IPD)
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Informations sur les médicaments et les dispositifs, documents d'étude
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