Clinical Trial Details
— Status: Recruiting
Administrative data
NCT number |
NCT04556890 |
Other study ID # |
20-000530 |
Secondary ID |
|
Status |
Recruiting |
Phase |
N/A
|
First received |
|
Last updated |
|
Start date |
March 1, 2023 |
Est. completion date |
March 31, 2027 |
Study information
Verified date |
March 2024 |
Source |
University of California, Los Angeles |
Contact |
Doan Ngo, BS |
Phone |
310-825-7797 |
Email |
thucdoanngo[@]mednet.ucla.edu |
Is FDA regulated |
No |
Health authority |
|
Study type |
Interventional
|
Clinical Trial Summary
This study will examine the effects of brain stimulation on pain symptoms associated with
Major depressive disorder. This study will enroll 54 Subjects. Study subjects will be asked
to complete surveys about their mood and well-being, 2 blood draws, 2 MRIs, 3
electroencephalograms, and receive 30 treatments of blinded transcranial magnetic
stimulation. There is no control group as all subjects will receive some form of active
treatment. Subjects are required to participate in 30-33 study visits and volunteer 40 hours
of their time. Compensation for this study is $150 for completing all study activities.
Description:
The main objective of the proposed study is to evaluate the therapeutic effect of multi-site
repetitive Transcranial Magnetic Stimulation (rTMS) on chronic pain and inflammatory
responses in Major Depressive Disorder (MDD). MDD is the leading cause of disability
worldwide. One reason for the extraordinarily high burden of depression is painful somatic
symptoms: more than half of MDD patients complain of moderate to severe pain that is
associated with interference in function and unemployment and which can lead to opioid use
disorder. The neuro-immune interaction is increasingly understood as the underlying mechanism
of this comorbidity. Sustained psychosocial stress can cause a lasting increase in systemic
inflammation, which may be a key mediator of chronic pain and depression. Pro-inflammatory
cytokines have been linked to the dysregulation of signaling in the mesocorticolimbic system
and affect-related circuits present in both chronic pain and depression. Meta-analyses have
identified higher CRP, IL6, and TNFa among depressed patients. Additionally, CRP was found to
be increasingly higher with higher number failed treatment trials, suggesting that treatment
resistant depression (TRD) patients who qualify for rTMS tend to have higher inflammation
than those who respond to pharmacological antidepressant treatment [6]. Further, baseline
levels of transcriptional control pathways (TCP) related to immune or sympathetic activation
and glucocorticoid insensitivity mediate experimentally induced depressed mood. Even though
the inflammatory reaction may originate in the periphery, downstream effects can result in
neuroinflammation and changes in neural network function through several immune-to-brain
signaling pathways. Previous research has shown that functional connectivity between DLPFC
and anterior cingulate cortex (ACC) also mediates neuroinflammation levels in ACC, and which
was linked to depressive scores in chronic pain patients [8]. rTMS to the left dorsolateral
prefrontal cortex (DLPFC) is a non-invasive neuromodulation technique that has proven
clinical efficacy for MDD and rTMS to primary motor cortex (M1) has been demonstrated to
reduce chronic pain, including fibromyalgia, neuropathic pain, headache and regional pain].
Based on these findings, the investigators hypothesize that combined rTMS to depression and
pain targets will reduce both depressive and pain symptoms and will also result in an
effective reduction of systemic inflammation. The proposed research will examine the effects
of 30 neuro-navigated sessions of active vs. sham rTMS using 2 conditions: A) active rTMS at
DLPFC and sham at M1; B) active rTMS at DLPFC and M1. This design will help to dissociate the
impact of an antidepressant response on pain reduction (condition A), or whether the combined
treatment (condition B) will result in a synergetic effect. The investigators will focus on
pain types related to inflammation including fibromyalgia (FM) and ME/CFS, whose symptomatic
profiles are closely overlapping with those of MDD and may thus preferentially respond to
rTMS.
The investigators will combine the analysis of circulating pro-inflammatory cytokines with
transcriptomic analyses, which may be even more sensitive to short-term changes. Functional
magnetic resonance imaging (fMRI) and electroencephalography (EEG) data will be used to
assess biomarkers and mechanisms of action (MOA) of successful rTMS treatment for pain. The
conceptualization of pain treatment in MDD at the brain network and systemic levels makes
this study a highly innovative approach to neuropsychiatric research.