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Investigating the neuroreceptor NMDA in the brain of healthy and depressed people

Investigating N-methyl-d-aspartate (NMDA) receptor alterations in major depressive disorder by brain PET - NMDA receptor alterations depressed healthy

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2022-003279-41-AT
Enrollment
60
Registered
2023-02-02
Start date
2023-03-31
Completion date
Unknown
Last updated
2025-01-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Major Depression

Interventions

Trade Name: Cipralex® 10 mg - Filmtabletten Pharmaceutical Form: Tablet INN or Proposed INN: Escitalopram Other descriptive name: Escitalopram oxalate Concentration unit: mg milligram(s) Concentration

Sponsors

Medical University of Vienna, University Department of Psychiatry and Psychotherapy
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: General • General health based on medical history, physical examination and vital signs at screening. • Male and female subjects, age 18 to 55 years • Willingness and competence to sign the informed consent form • Right-handedness • Non-smoker (less than 5 cigarettes per week) • Body weight 50-100 kg (BMI 19-26) Depressed Patients • DSM-V diagnosis of MDD following SCID I, HDRS29, MADRS and BDI Healthy subjects • Mental health based on history and initial screening (HDRS = 8, MADRS = 6 and BDI =65 years) no F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: • Current or history of psychiatric or neurological disease (other than MDD) • Current medical illness requiring treatment (other than MDD) • Current or former psychopharmacological treatment within the last 6 months • Previous escitalopram intake • Hypersensitivity to escitalopram • Acute suicidality • Pregnancy or currently breastfeeding • Current or former substance or alcohol abuse • Any contraindication for MRI e.g. (implants, stainless steel graft, claustrophobia) • Failure to comply with the study protocol or to follow the instruction of the investigating team • Summed radiation exposure in this study and the past 10 years exceeds 30 mSv (limit for 10 years acc. to Austrian Radiation Protection Law “Med. Strahlenschutzverordnung 2020, §25 (3)”

Design outcomes

Primary

MeasureTime frame
Main Objective: • To assess alterations in (R)-11C-Me-NB1 NMDA receptor binding in predefined brain regions in unmedicated patients with MDD compared to healthy volunteers • To analyze potential treatment effects of an antidepressant (escitalopram) and psychotherapy on GluN2B-containing NMDA receptors in patients with MDD in a longitudinal, double-blind, randomized, placebo-controlled design;Secondary Objective: To test associations between treatment changes (as measured by psychiatric tests) and (R)-11C-Me-NB1 NMDA receptor binding;Primary end point(s): Changes in GluN2B-containing NMDA receptor binding (PET);Timepoint(s) of evaluation of this end point: Data analysis will be performed 42 days (+/- 2 days) after study participation

Secondary

MeasureTime frame
Secondary end point(s): Associated changes in HDRS = 8, MADRS = 6 and BDI < 13 or = 50 % reduction;Timepoint(s) of evaluation of this end point: Data analysis will be performed 42 days (+/- 2 days) after study participation

Countries

Austria

Contacts

Public ContactNEUROIMAGING LABS

Medical University of Vienna, University Department of Psychiatry and Psychotherapy

rupert.lanzenberger@meduniwien.ac.at+4314040035760

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026