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Major Depressive DisorderNCT06658795

Treating Loneliness In The Older Adult With Depression With tDCS

A study testing Transcranial direct current stimulation (tDCS) on the Left DLPFC and Transcranial direct current stimulation (tDCS) on the right VLPFC in people with Major Depressive Disorder and Loneliness, run by Guangzhou Psychiatric Hospital at 1 site in China.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

High loneliness is prevalent among older adults and is a significant risk factor for major depression and low recovery rates in patients. Current interventions for loneliness are limited. Read more about this study

Who is it for?
Ages 60 to 80 yearsHealthy volunteers can take part
Conditions the study is for
Major Depressive Disorder, Loneliness
What is being tested?
Transcranial direct current stimulation (tDCS) on the Left DLPFC and Transcranial direct current stimulation (tDCS) on the right VLPFC
Type of treatment
Medical device
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
180 participants
Where
1 siteChina
Study dates
29 Oct 2024to 30 Dec 2026
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 60 to 80 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • High loneliness (UCLA Loneliness Scale > 43).
  • Diagnosis of major depressive disorder confirmed by the Structured Clinical Interview for DSM-5 Disorders.
  • absence of suicidal ideation (Hamilton Depression Scale item 3 score ≤ 1).

Who cannot join

  • Severe neurological diseases.
  • Bipolar disorder, schizophrenia, addiction, or impulse control disorders.
  • Contraindications for tDCS or MRI (e.g., metal implants).
  • Presence of suicidal ideation.

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Kangguang Lin, PhD; MD contact

8613560360144

klin@gzhmu.edu.cn

Robin Shao, PhD contact

James0828@hotmail.com

China1 site, 1 recruiting
  • Guangzhou Brain Hospital

    Guangzhou, Guangdong, 510370

    Kangguang Lin, Ph.D; MD, 8602081268219, linkangguang@163.com

    Recruiting

Other trials in China

About this study

Official title: Effects of Transcranial Direct Current Stimulation on Loneliness in Older Adults With Depression: A Randomized Controlled Trial

High loneliness is prevalent among older adults and is a significant risk factor for major depression and low recovery rates in patients. Current interventions for loneliness are limited. Previous research has demonstrated a link between loneliness, negative social emotions, and reduced resting-state functional connectivity in the lateral prefrontal cortex (LPFC) and the default mode network (DMN). Transcranial direct current stimulation (tDCS) has shown promise in enhancing emotional regulation and connectivity, potentially alleviating loneliness in older adults with depression.

Read the detailed description

Loneliness is a pervasive issue among older adults, significantly increasing the risk of major depression and contributing to low recovery rates in affected individuals. Despite its widespread impact, current interventions aimed at alleviating loneliness remain limited and often ineffective. Research has revealed a strong connection between feelings of loneliness, negative social emotions, and decreased resting-state functional connectivity in key brain regions, particularly the lateral prefrontal cortex (LPFC) and the default mode network (DMN). These findings suggest that the neural underpinnings of loneliness may be targeted to improve emotional well-being.

Transcranial direct current stimulation (tDCS) emerges as a promising intervention in this context, as it has been shown to enhance emotional regulation and improve functional connectivity within these neural networks. By applying low electrical currents to specific brain areas, tDCS may help mitigate feelings of loneliness, thereby fostering a greater sense of social connection among older adults with depression.

Objectives Evaluate the Effects of Repeated tDCS on Loneliness Levels: This trial aims to systematically assess how repeated sessions of tDCS influence loneliness in older adults with major depressive disorder. By comparing these groups, we hope to understand the differential impacts of tDCS on loneliness, taking into account the potential confounding effects of depression.

Elucidate the Neuro-Emotional Mechanisms: A key objective is to uncover the neuro-emotional mechanisms that underlie the effects of tDCS on loneliness. This involves examining changes in neural activity and connectivity patterns in the LPFC and DMN, as well as tracking shifts in negative social emotions that may accompany improvements in loneliness. Understanding these mechanisms could enhance the efficacy of tDCS as an intervention.

Develop Predictive Models for Individualized Treatment Outcomes: Another important aim of this trial is to create predictive models that utilize neuro-emotional data to tailor treatment approaches for individuals. By identifying specific neural and emotional markers that correlate with positive outcomes from tDCS, we can move toward more personalized interventions, potentially improving recovery rates and overall mental health in older adults with depression facing loneliness.

This trial represents a significant step toward addressing the critical issue of loneliness in older adults with depression, with the potential to offer a novel and effective intervention strategy that integrates neurobiology and emotional health.

Being tested
Transcranial direct current stimulation (tDCS) on the Left DLPFC, Transcranial direct current stimulation (tDCS) on the right VLPFC, Sham stimulation group
Keywords
Randomization Controlled Trial, Transcranial Direct Current Stimulation, Depression, loneliness
Medical subject headings
Depressive Disorder, Major, Depression

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Transcranial direct current stimulation (tDCS) on the Left DLPFCDevice

    The tDCS parameters were set to a current of 2mA for a single session lasting 20 minutes. For stimulating the lDLPFC, the positive electrode was placed at position F3, and the negative electrode was placed in the right supraorbital area/FP2 (e.g., Dubreuil-Vall et al., 2021, Biol Psychiatry: CNNI).

  • Transcranial direct current stimulation (tDCS) on the right VLPFCDevice

    The tDCS parameters were set to a current of 2mA for a single session lasting 20 minutes. Based on the EEG 10-20 international system, the positive electrode for stimulating the rVLPFC was placed at position F6, while the negative electrode was placed in the left supraorbital area/FP1 (e.g., He et al., 2020, Psychol Med)

  • Sham stimulation groupDevice

    The electrode positions were randomized to match those of the rVLPFC or lDLPFC groups, but the stimulation only lasted for the first 30 seconds.

Study groups in NCT06658795
Study groupRoleWhat they receive
Left DLPFC stimulation groupExperimentalThe tDCS parameters were set to a current of 2mA for a single session lasting 20 minutes. Based on the EEG 10-20 international system, the positive electrode was placed at position F3, and the negative electrode was placed in the right supraorbital area/FP2 (e.g., Dubreuil-Vall et al., 2021, Biol Psychiatry: CNNI)
Receives: Device: Transcranial direct current stimulation (tDCS) on the Left DLPFC
Right VLPFC stimulation groupExperimentalThe tDCS parameters were set to a current of 2mA for a single session lasting 20 minutes. Based on the EEG 10-20 international system, the positive electrode for stimulating the right VLPFC was placed at position F6, while the negative electrode was placed in the left supraorbital area/FP1 (e.g., He et al., 2020, Psychol Med).
Receives: Device: Transcranial direct current stimulation (tDCS) on the right VLPFC
Sham stimulation groupSham comparatorIn the sham stimulation group, the electrode positions were randomized to match those of the rVLPFC or lDLPFC groups, but the stimulation only lasted for the first 30 seconds.
Receives: Device: Sham stimulation group

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in loneliness levels from baseline measured by the UCLA Loneliness Scale from baseline

    This outcome measures the change in loneliness levels among participants, assessed using the UCLA Loneliness Scale. Evaluations will occur at baseline, 1 month, and 3 months post-intervention (after the two weeks of intervention, the same as below) to determine the effectiveness of the tDCS intervention on reducing feelings of loneliness in patients with depression.

    Measured: 2 weeks, 1.5 months and 3.5 months

Secondary outcomes (13)
  1. Change in Emotional and Motivational Ratings from baseline

    Participants' emotional and motivational responses will be assessed using a word rating task, which evaluates how different words or stimuli evoke emotional and motivational reactions.

    Measured: 2 weeks, 1.5 months and 3.5 months

  2. changes in Social Participation Levels from baseline

    The PM-3D4D questionnaire will be utilized to assess participants' levels of social participation, focusing on engagement in social activities and interactions.

    Measured: 2 weeks, 1.5 months and 3.5 months

  3. changes in Social Motivation from baseline

    Social motivation will be evaluated through the Social Motivation Questionnaire, which examines the intrinsic and extrinsic factors that drive social engagement in individuals.

    Measured: 2 weeks, 1.5 months and 3.5 months

  4. changes in Social Network from baseline

    The Lubben Social Network Scale will be used to assess participants' social networks

    Measured: 2 weeks, 1.5 months and 3.5 months

  5. changes in Emotional Regulation from baseline

    The Cognitive Emotion Regulation Questionnaire will be used to assess participants' emotion regulation functions.

    Measured: 2 weeks, 1.5 months and 3.5 months

  6. changes in Affective Traits from baseline

    Affective traits will be evaluated using the Chinese Affect Scale, which assess individual differences in emotional experiences and behavioral tendencies.

    Measured: 2 weeks, 1.5 months and 3.5 months

  7. changes in Reward Sensitivity from baseline

    The Temporal Experience of Pleasure Scale will be used to assess participants' reward sensitivity.

    Measured: 2 weeks, 1.5 months and 3.5 months

  8. changes in Depressive Symptoms from baseline

    Hamilton Depression Rating Scale (HAM-D) will be employed to measure the severity of depressive symptoms among participants, providing insight into their mental health status.

    Measured: 2 weeks, 1.5 months and 3.5 months

  9. changes in Resting-State Functional Connectivity from baseline

    Resting State Functional Connectivity among major brain networks based on T2-weighted functional magnetic resonance imaging data will be assessed.

    Measured: 2 weeks, 1.5 months and 3.5 months

  10. Change in social support from baseline

    the Multidimensional Scale of Perceived Social Support will be used to assess participants' perceived social support

    Measured: 2 weeks, 1.5 months and 3.5 months

  11. changes in Emotion Coping from baseline

    The COPE questionnaire will be used to assess participants' emotion coping under adversity.

    Measured: 2 weeks, 1.5 months and 3.5 months

  12. changes in Incentive-Driven Behavioural Tendencies from baseline

    The Behavioural Activation/Inhibition Scale will be used to assess participants' behavioural tendencies driven by rewards and punishments.

    Measured: 2 weeks, 1.5 months and 3.5 months

  13. changes in Anhedonia level from baseline

    The Dimensional Anhedonia Rating Scale will be used to assess participants' anhedonia level.

    Measured: 2 weeks, 1.5 months and 3.5 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted26 Oct 2024
  2. Study start29 Oct 2024 (estimated)
  3. Primary completion20 Oct 2026 (estimated)
  4. Study completion30 Dec 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
The tDCS parameters were set to a current of 2mA for a single session lasting 20 minutes. Based on the EEG 10-20 international system, the positive electrode for stimulating the rVLPFC was placed at position F6, while the negative electrode was placed in the left supraorbital area/FP1 (e.g., He et al., 2020, Psychol Med) (Figure 1-5a). For stimulating the lDLPFC, the positive electrode was placed at position F3, and the negative electrode was placed in the right supraorbital area/FP2 (e.g., Dubreuil-Vall et al., 2021, Biol Psychiatry: CNNI) (Figure 1-5b). In the sham stimulation group, the electrode positions were randomized to match those of the rVLPFC or lDLPFC groups, but the stimulation only lasted for the first 30 seconds.
Masking
Triple blind
Who is masked
Participant, Investigator, Outcomes assessor
Enrolment
180 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06658795
Sponsor's protocol ID
2024-17
Status last verified
Oct 2024
First submitted
22 Oct 2024
Last updated
26 Oct 2024
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Dubreuil-Vall L, Gomez-Bernal F, Villegas AC, Cirillo P, Surman C, Ruffini G, Widge AS, Camprodon JA. Transcranial Direct Current Stimulation to the Left Dorsolateral Prefrontal Cortex Improves Cognitive Control in Patients With Attention-Deficit/Hyperactivity Disorder: A Randomized Behavioral and Neurophysiological Study. Biol Psychiatry Cogn Neurosci Neuroimaging. 2021 Apr;6(4):439-448. doi: 10.1016/j.bpsc.2020.11.006. Epub 2020 Nov 25.

    PubMed 33549516
  • He Z, Liu Z, Zhao J, Elliott R, Zhang D. Improving emotion regulation of social exclusion in depression-prone individuals: a tDCS study targeting right VLPFC. Psychol Med. 2020 Dec;50(16):2768-2779. doi: 10.1017/S0033291719002915. Epub 2019 Oct 16.

    PubMed 31615594

Questions about this trial

What is this clinical trial studying?

A study testing Transcranial direct current stimulation (tDCS) on the Left DLPFC and Transcranial direct current stimulation (tDCS) on the right VLPFC in people with Major Depressive Disorder and Loneliness, run by Guangzhou Psychiatric Hospital at 1 site in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 26 Oct 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Kangguang Lin, PhD; MD (8613560360144, klin@gzhmu.edu.cn), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in loneliness levels from baseline measured by the UCLA Loneliness Scale from baseline (time frame: 2 weeks, 1.5 months and 3.5 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06658795, which also lists 2 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Oct 2024.

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