Brain Markers of Depression Vulnerability: the Case of Prefrontal Haemodynamic Response

NCT ID: NCT05427578

Last Updated: 2025-12-11

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

90 participants

Study Classification

OBSERVATIONAL

Study Start Date

2021-08-01

Study Completion Date

2024-11-29

Brief Summary

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Functional near infrared spectroscopy (fNIRS) offers a cheap and reliable tool to investigate prefrontal brain activation in the healthy and diseased human brain. As such, fNIRS bears great potential as a diagnostic tool for clinical practice. Research indicates that fNIRS, together with a relatively simple task to activate the prefrontal cortex, the so-called verbal fluency task (VFT), elucidates prefrontal dysfunction in major depressive disorder (MDD). This finding can potentially serve as an imaging marker for disease pathology, even when depressive symptoms are absent. Indeed, recent research also suggests prefrontal dysfunction in fully remitted MDD (rMDD). Prefrontal haemodynamic responses may therefore serve as a trait marker for MDD vulnerability.

This study aims to investigate the haemodynamic response in rMDD, healthy participants with increased MDD risk (HCr; having a 1st-degree relative with MDD), and low-risk healthy participants (HCnr; having no 1st-degree relatives with MDD) using fNIRS. The investigators hypothesize lower prefrontal reactivity in HCr compared to HCnr, and lowest prefrontal reactivity in rMDD compared to HCnr.

This study has the potential to elucidate the neuronal underpinnings of depression vulnerability in the absence of symptoms that are sometimes considered a confounding factor when it comes to studying the biological encoding of depression.

Detailed Description

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Healthy participants with a high risk of MDD (HCr), healthy participants with a low risk of MDD (HCnr) and rMDD participants will be included in this study.

Prefrontal haemodynamic response will be measured in all participants during the verbal fluency test (VFT) using 52 channels fNIRS. The VFT involves two neural conditions, one positive condition, and one negative condition.

Both the neuroimage change and the behavioral outcomes of VFT will be compared within-group and among groups. The correlation between the neuroimage change and the behavioral outcomes will be analyzed as well.

Conditions

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Depression

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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Remitted depression

Patients in full remission of a major depressive disorder (rMDD)

fNIRS measurement

Intervention Type OTHER

measurement using functional near-infrared spectroscopy

Healthy participants at risk

Healthy participants with increased MDD risk (having a 1st-degree relative with MDD)

fNIRS measurement

Intervention Type OTHER

measurement using functional near-infrared spectroscopy

Healthy participants low risk

Healthy participants with low MDD risk (having no 1st-degree relatives with MDD)

fNIRS measurement

Intervention Type OTHER

measurement using functional near-infrared spectroscopy

Interventions

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fNIRS measurement

measurement using functional near-infrared spectroscopy

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Mini-mental state examination (MMSE) \> 24

Exclusion Criteria

* Current diagnosis of psychiatric disorders, such as depression, anxiety, schizophrenia, or autism
* current or past diagnosis of neurological disorders, such as head injuries, strokes, encephalitis, epilepsy, Parkinson's, or Alzheimer's
Minimum Eligible Age

18 Years

Maximum Eligible Age

35 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Dr Georg Kranz

OTHER

Sponsor Role lead

Responsible Party

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Dr Georg Kranz

Principal Investigator

Responsibility Role SPONSOR_INVESTIGATOR

Principal Investigators

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Georg S Kranz, PhD

Role: PRINCIPAL_INVESTIGATOR

The Hong Kong Polytechnic University

Locations

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The Hong Kong Polytechnic University

Hong Kong, , Hong Kong

Site Status

Countries

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Hong Kong

Other Identifiers

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HSEARS20210323001-01

Identifier Type: -

Identifier Source: org_study_id

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