Prefrontal Glutamatergic Modulation by NAC and MBCT for Depression in Youth

Trial statusRecruiting
Trial phasePhase 3
Trial typeInterventional
Biological sexAll
Age15-24
SponsorUniversity of Cincinnati

About this trial

The primary goal is to investigate to what extent changes in glutamate and glutathione modulation and functional integration between brain networks associated with emotion and attention regulation are associated with treatment response in mildly depressed youth.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

age between 15 years, 0 months to 24 years, 11 months old;

presenting with mild depression, defined by meeting DSM-5 criteria for a current major depressive episode, mild severity, or persistent depressive disorder, or other specified depressive disorder (depressive episode with insufficient symptoms to meet criteria for a major depressive episode);

medication-naïve or medication free for at least 5 half-lives since the last use of a psychoactive medication, with the exception of stimulants for ADHD;

if on ADHD stimulant medication over 2 months prior to screening, willing to maintain stimulant dose constant during the study participation;

Disqualifiers

significant suicidal risk, defined by suicidal ideation of type 3, 4 or 5 on the Columbia Suicide Severity Rating Scale (C-SSRS) in the past 3 months, or any lifetime suicidal attempts;

current major depressive episode, moderate or severe

current or lifetime history of manic or hypomanic episodes, and/or diagnosis of bipolar disorder;

current or lifetime history of psychotic disorders, and/or prior diagnosis of schizophrenia spectrum disorders;

Trial design

Design model

Parallel

Treatments tested in this trial

  • N-acetylcysteine

    Drug

    N-acetylcysteine 2400 mg/d

  • Mindfulness-based cognitive therapy

    Behavioral

    Mindfulness-based cognitive therapy

  • Placebo

    Drug

    Placebo capsules

  • Sham mindfulness-based intervention

    Behavioral

    Sham mindfulness-based intervention

Treatment groups

160 Participants
are divided into 4 treatment groups
Group A: NAC plus MBCTActive comparator 2 interventions
Group B: Placebo plus MBCTPlacebo comparator 2 interventions
Group C: NAC plus sham MBCTSham comparator 2 interventions
Group D: Placebo plus sham MBCTOther 2 interventions

Trial outcomes

Primary outcomes

1

Glutamate levels in the left ventrolateral prefrontal cortex (VLPFC)

Changes in glutamate levels, measured by proton spectroscopy, in the left VLPFC following 8-week treatment with NAC and/or MBCT.

Time frame
From baseline to week 8

Secondary outcomes

1

Functional connectivity (Fc) within prefrontal cortex-limbic circuits and within large-scale brain networks

Changes in Fc in the prefrontal cortex (VLPFC, ACC) and subcortical regions, and within large scale brain networks associated with emotion and attention regulation (cingulo-opercular, fronto-parietal, and default mode networks) following treatment with NAC and/or MBCT.

Time frame
From baseline to week 8

Other outcomes

1

Glutathione levels in the prefrontal cortex

Changes in central biomarker of oxidative stress (glutathione levels in the left VLPFC and in the anterior cingulate cortex) following treatment with NAC and/or MBCT. Exploratory.

Time frame
From baseline to week 8
2

Thiobarbituric acid reactive substances (TBARS) serum levels

Changes in peripheral biomarker of oxidative stress (TBARS serum levels) following treatment with NAC and/or MBCT

Time frame
From baseline to week 8
3

Malondialdehyde (MDA) serum levels

Changes in peripheral marker of oxidative stress (MDA serum levels) following treatment with NAC and/or MBCT

Time frame
From baseline to week 8
4

High-sensitivity C-reactive protein (hs-CRP) serum levels

Changes in peripheral biomarker of inflammation (hs-CRP serum levels) following treatment with NAC and/or MBCT

Time frame
From baseline to week 8

Sponsors and contacts

Click on the lead sponsor to view all of their trials.

University of Cincinnati

Lead sponsor

National Center for Complementary and Integrative Health (NCCIH)

Collaborator