EEG microstates and inflammatory markers in treatment-resistant depression patients undergoing ECT
Official title: The Relationship of EEG Microstate Parameters and Neuroinflammatory Biomarkers With Treatment Response in Patients With Treatment-Resistant Major Depressive Disorder Receiving Electroconvulsive Therapy
Run by Istanbul University - Cerrahpasa · NCT07748091 · Data updated 2026-11-12
This study tests how electroconvulsive therapy affects brain activity patterns seen in EEG and inflammatory biomarkers in adults with treatment-resistant major depression.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years to 60 Years |
| Sex | All |
| Enrollment | 62 (estimated) |
| Sponsor | Istanbul University - Cerrahpasa Academic / other |
| Locations | 1 site (Istanbul, Bakırköy) |
| Status | Recruiting |
| Started | January 1, 2026 |
| Main results expected | December 2026 |
| Study ends | March 2027 |
| Registry record updated | August 5, 2026 |
| Trial ID | NCT07748091 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults aged 18-60 with DSM-5–confirmed major depressive disorder who are clinically indicated for ECT and have not responded to at least two antidepressants.
✕Probably not a fit
Patients who do not show neurophysiological or biomarker changes associated with clinical improvement may see limited benefit from ECT.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
Researchers will collect EEG data before and after ECT to analyze microstate patterns, which may reflect changes in large-scale brain networks. Blood samples will be drawn to measure inflammatory markers and blood counts before and after treatment. The goal is to see if changes in EEG microstates correlate with clinical improvement and biomarker shifts in patients with resistant major depression, compared with healthy controls.
Why it matters
Potential benefit: If successful, the study could clarify biological changes linked to ECT response and help tailor treatment for resistant depression.
How similar studies have gone: Previous work has linked EEG microstates and inflammatory markers to mood disorders, but this approach in the ECT setting is relatively novel and exploratory.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: Patient Group * Age 18-60 years * Diagnosis of Major Depressive Disorder, current major depressive episode, according to DSM-5 criteria. * Clinical indication for electroconvulsive therapy (ECT). * Ability to provide written informed consent. * Willingness to participate in the study. Healthy Control Group: * Age ≥55 years. * No current psychiatric disorder. * No known neurological disorder. * Good general physical health. * No current use of medications known to affect EEG activity or inflammatory biomarkers significantly. * Ability to provide written informed consent. * Willingness to participate in the study. Exclusion Criteria: * Primary neurological disorders (e.g., dementia or traumatic brain injury). * Schizophrenia or other psychotic disorders. * Bipolar disorder diagnosis, * Intracranial space-occupying lesions. * Increased intracranial pressure. * Myocardial infarction within the previous 3 months. * Cerebrovascular disease within the previous month. * Unstable cerebral aneurysm. * Pheochromocytoma. * Electroconvulsive therapy (ECT) or transcranial magnetic stimulation (TMS) within the previous month. * Cognitive impairment severe enough to prevent adequate cooperation during EEG recording. * Current alcohol or substance use disorder. * Active infectious disease. * Autoimmune or chronic inflammatory disorders. * Current use of systemic corticosteroids, immunosuppressive agents, or other medications known to affect inflammatory biomarkers significantly.
Where it's running
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İstanbul University- Cerrahpasa, Cerrahpasa Medicine Faculty, Psychiatry Department
Istanbul, Bakırköy, Turkey (Türkiye) Recruiting
Study contacts
- Study coordinator: Zeynep Özge Dagoglu Sarac, Dr
- Email: zod395@gmail.com
- Phone: +905365942469
Similar studies
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EEG microstates and inflammatory biomarkers in older adults with major depression receiving ECT
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.