Effects of Low-intensity Transcranial Magnetic Stimulation on Major Depressive Disorder, and on 5-hydroxyindoleacetic Acid and Brain-derived Neurotrophic Factor Levels

NCT ID: NCT06667180

Last Updated: 2025-05-08

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

RECRUITING

Clinical Phase

PHASE1/PHASE2

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-10-28

Study Completion Date

2025-08-26

Brief Summary

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The goal of this randomised clinical trial is to evaluate the effects of transcranial magnetic stimulation (TMS) on major depressive disorder (MDD) and on the levels of 5-hydroxyindoleacetic acid (5-HIAA) and brain-derived neurotrophic factor (BDNF). TMS works to treat MDD by using low-intensity magnetic fields to modulate certain areas of the brain, activating them which can help improve the mood of those suffering from the disorder. Final metabolites of serotonin such as 5-HIAA and growth factors such as BDNF will also be studied before starting the intervention and at the end to check if there is a significant change in their concentration. Likewise, its safety will be evaluated by monitoring the symptoms that they present at the end of the intervention and one month later. The main questions that are intended to be answered are:

* Does low-intensity TMS reduce depressive symptoms in patients with MDD?
* Does low-intensity TMS significantly change the initial and final concentrations of 5-HIAA and BDNF?
* What adverse effects might patients who are exposed to low-intensity TMS experience? The researchers will compare low-intensity and accelerated TMS with sham TMS to see if low-intensity TMS works to treat MDD.

Participants:

* Will undergo an initial clinical assessment to confirm the disorder, comorbidities, and general health status.
* A 5 mL blood sample will be taken before starting the intervention.
* Low-intensity TMS will be applied for 4 days, 5 daily sessions of 200 s with 10-minute intersession intervals at a field intensity of 2-4 milliTesla (mT) and frequency of 50 Hz in theta bursts. Symptoms will be monitored daily.
* A 5 mL blood sample will be taken at the end of the intervention and general health status clinimetrics will be reapplied.

Detailed Description

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Conditions

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Depression - Major Depressive Disorder Transcranial Magnetic Stimulation Placebo

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Participants

Study Groups

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Low-intensity TMS

This group will receive the real low-intensity TMS

Group Type EXPERIMENTAL

Low-intensity TMS

Intervention Type DEVICE

Low-intensity TMS will be applied for 4 days, 5 daily sessions of 200 s with 10-minute intersession intervals at a field intensity of 2-4 mT and frequency of 50 Hz in theta bursts.

Sham low-intensity TMS

This group will receive the simulation of the low-intensity TMS

Group Type PLACEBO_COMPARATOR

Transcranial Magnetic Stimulation Sham

Intervention Type DEVICE

The control group will receive the simulation of low-intensity TMS without magnetic field induction.

Interventions

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Low-intensity TMS

Low-intensity TMS will be applied for 4 days, 5 daily sessions of 200 s with 10-minute intersession intervals at a field intensity of 2-4 mT and frequency of 50 Hz in theta bursts.

Intervention Type DEVICE

Transcranial Magnetic Stimulation Sham

The control group will receive the simulation of low-intensity TMS without magnetic field induction.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Age between 18 and 60 years.
* Both sexes.
* Those who have a diagnosis of MDD previously made by the treating psychiatrist (considering time since diagnosis and recurrence of episodes).
* Those who continue with their respective treatment and attend follow-up consultations at the health facility.
* Those who do not have a history of epilepsy, schizophrenia, neurosurgeries.
* Those who do not have metal plates anywhere in the skull, neck, chest and shoulder.
* Those who do not use pacemakers.
* Those who do not take hormone substitutes.
* Those who agree to participate in the research.

Exclusion Criteria

* Those who are pregnant.
Minimum Eligible Age

18 Years

Maximum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Instituto Mexicano del Seguro Social

OTHER_GOV

Sponsor Role collaborator

Universidad de Guanajuato

OTHER

Sponsor Role lead

Responsible Party

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Olga Estefania Escobar Florez

Principal investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Ma. Eugenia Garay Sevilla, PhD in medical sciences

Role: STUDY_DIRECTOR

Universidad de Guanajuato

José M De la Roca Chiapas, PhD in medical sciences

Role: STUDY_DIRECTOR

Universidad de Guanajuato

Blanca O Murillo Ortíz, PhD in medical sciences

Role: STUDY_DIRECTOR

Universidad de Guanajuato

Angélica Hernández Rayas, Physics PhD

Role: STUDY_CHAIR

Universidad de Guanajuato

Olga E Escobar Florez, Master of Medical Sciences

Role: PRINCIPAL_INVESTIGATOR

Universidad de Guanajuato

Locations

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High Specialty Medical Unit No. 1, Bajío. Mexican Social Security Institute

León, Guanajuato, Mexico

Site Status RECRUITING

Countries

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Mexico

Central Contacts

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Olga E Escobar Florez, Master of Medical Sciences

Role: CONTACT

+524773703795

Ma. Eugenia Garay Sevilla, Medical Sciences PhD

Role: CONTACT

+524731414191

Facility Contacts

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Blanca O Murillo Ortíz, PhD Medical Sciences

Role: primary

4772522013

Olga E Escobar Florez, Master of Medical Sciences

Role: backup

+524773703795

Other Identifiers

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R-2024-785-001

Identifier Type: REGISTRY

Identifier Source: secondary_id

CEPIUG-P35-2023

Identifier Type: -

Identifier Source: org_study_id

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