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Schizophrenia Treatment With Photoneuromodulation

NCT05339347 · Status: COMPLETED · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 30

Last updated 2025-09-29

No results posted yet for this study

Summary

Abstract: Randomized clinical trial that aims to see the efficacy of photoneuromodulation for the treatment of negative symptoms of schizophrenia in patients refractory to transcranial direct current stimulation. In this group of 30 refractory volunteers, magnetic resonance spectroscopy will be performed before and after photoneuromodulation in a cross-over design.

Objectives: Effectiveness of photoneuromodulation in patients with schizophrenia. . Analysis of glutamate, Gaba and lactate in spectroscopy before and after stimulation (secondary) Sample: 30 volunteers with negative symptoms of schizophrenia refractory to treatment.

Method: clinical trial, cross-over randomized, double-blind, sham-controlled. PANSS negative symptoms subscale evaluation before and after the 10 photoneuromodulation sessions. Participants who are in the active group after the 10 photoneuromodulation sessions will go to the sham group and vice versa. They will perform magnetic resonance spectroscopy before the beginning, after the 10 sessions and again after the inversion of the groups (3 resonances per volunteer). The study will be a cross-over: half of participants will start at sham group and the other half at active group and invert groups after 10th day of stimulation.

Conditions

Interventions

DEVICE

Photoneuromodulation

Treatments were administered daily for a period of 2 weeks (10 sessions) with a Light-Aid (Bright Photomedicine, SP, Brazil), continuous wave, 300 LED wavelength 850 nm) or with a placebo probe of the same appearance and display. The irradiation parameters created will be based on the disease, pain intensity and skin phototype. Each session has from 10 to 15 min, depending on skin phototype

Sponsors & Collaborators

  • University of Sao Paulo

    lead OTHER

Principal Investigators

  • Leandro Valiengo, PhD · Study Principal Investigator

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Max Age
55 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2021-08-01
Primary Completion
2022-03-11
Completion
2022-03-11

Countries

  • Brazil

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05339347 on ClinicalTrials.gov