Evaluating noninvasive brain stimulation to treat overactive bladder in individuals with multiple sclerosis: a randomized controlled trial protocol

Abstract Background Multiple Sclerosis (MS) is an often debilitating disease affecting the myelin sheath that encompasses neurons. It can be accompanied by a myriad of pathologies and adverse effects such as neurogenic lower urinary tract dysfunction (NLUTD). Current treatment modalities for resolvi...

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Main Authors: Betsy H. Salazar, Kristopher A. Hoffman, John A. Lincoln, Christof Karmonik, Hamida Rajab, Santosh A. Helekar, Rose Khavari
Format: Article
Language:English
Published: BMC 2024-01-01
Series:BMC Urology
Subjects:
Online Access:https://doi.org/10.1186/s12894-023-01358-8
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author Betsy H. Salazar
Kristopher A. Hoffman
John A. Lincoln
Christof Karmonik
Hamida Rajab
Santosh A. Helekar
Rose Khavari
author_facet Betsy H. Salazar
Kristopher A. Hoffman
John A. Lincoln
Christof Karmonik
Hamida Rajab
Santosh A. Helekar
Rose Khavari
author_sort Betsy H. Salazar
collection DOAJ
description Abstract Background Multiple Sclerosis (MS) is an often debilitating disease affecting the myelin sheath that encompasses neurons. It can be accompanied by a myriad of pathologies and adverse effects such as neurogenic lower urinary tract dysfunction (NLUTD). Current treatment modalities for resolving NLUTD focus mainly on alleviating symptoms while the source of the discomfort emanates from a disruption in brain to bladder neural circuitry. Here, we leverage functional magnetic resonance imaging (fMRI), repetitive transcranial magnetic stimulation (rTMS) protocols and the brains innate neural plasticity to aid in resolving overactive bladder (OAB) symptoms associated with NLUTD. Methods By employing an advanced neuro-navigation technique along with processed fMRI and diffusion tensor imaging data to help locate specific targets in each participant brain, we are able to deliver tailored neuromodulation protocols and affect either an excitatory (20 min @ 10 Hz, applied to the lateral and medial pre-frontal cortex) or inhibitory (20 min @ 1 Hz, applied to the pelvic supplemental motor area) signal on neural circuitry fundamental to the micturition cycle in humans to restore or reroute autonomic and sensorimotor activity between the brain and bladder. Through a regimen of questionnaires, bladder diaries, stimulation sessions and analysis, we aim to gauge rTMS effectiveness in women with clinically stable MS. Discussion Some limitations do exist with this study. In targeting the MS population, the stochastic nature of MS in general highlights difficulties in recruiting enough participants with similar symptomology to make meaningful comparisons. As well, for this neuromodulatory approach to achieve some rate of success, there must be enough intact white matter in specific brain regions to receive effective stimulation. While we understand that our results will represent only a subset of the MS community, we are confident that we will accomplish our goal of increasing the quality of life for those burdened with MS and NLUTD. Trial registration This trial is registered at ClinicalTrials.gov (NCT06072703), posted on Oct 10, 2023.
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spelling doaj.art-392d8079f7eb4c139270211873e3a1032024-03-05T17:06:50ZengBMCBMC Urology1471-24902024-01-0124111210.1186/s12894-023-01358-8Evaluating noninvasive brain stimulation to treat overactive bladder in individuals with multiple sclerosis: a randomized controlled trial protocolBetsy H. Salazar0Kristopher A. Hoffman1John A. Lincoln2Christof Karmonik3Hamida Rajab4Santosh A. Helekar5Rose Khavari6Department of Urology, Houston Methodist HospitalDepartment of Urology, Houston Methodist HospitalDepartment of Neurology, The University of Texas Health Science CenterTranslational Imaging Center, Houston Methodist Research InstituteDepartment of Urology, Houston Methodist HospitalCenter for Translational Biomagnetics and Neurometry, Houston Methodist Research InstituteDepartment of Urology, Houston Methodist HospitalAbstract Background Multiple Sclerosis (MS) is an often debilitating disease affecting the myelin sheath that encompasses neurons. It can be accompanied by a myriad of pathologies and adverse effects such as neurogenic lower urinary tract dysfunction (NLUTD). Current treatment modalities for resolving NLUTD focus mainly on alleviating symptoms while the source of the discomfort emanates from a disruption in brain to bladder neural circuitry. Here, we leverage functional magnetic resonance imaging (fMRI), repetitive transcranial magnetic stimulation (rTMS) protocols and the brains innate neural plasticity to aid in resolving overactive bladder (OAB) symptoms associated with NLUTD. Methods By employing an advanced neuro-navigation technique along with processed fMRI and diffusion tensor imaging data to help locate specific targets in each participant brain, we are able to deliver tailored neuromodulation protocols and affect either an excitatory (20 min @ 10 Hz, applied to the lateral and medial pre-frontal cortex) or inhibitory (20 min @ 1 Hz, applied to the pelvic supplemental motor area) signal on neural circuitry fundamental to the micturition cycle in humans to restore or reroute autonomic and sensorimotor activity between the brain and bladder. Through a regimen of questionnaires, bladder diaries, stimulation sessions and analysis, we aim to gauge rTMS effectiveness in women with clinically stable MS. Discussion Some limitations do exist with this study. In targeting the MS population, the stochastic nature of MS in general highlights difficulties in recruiting enough participants with similar symptomology to make meaningful comparisons. As well, for this neuromodulatory approach to achieve some rate of success, there must be enough intact white matter in specific brain regions to receive effective stimulation. While we understand that our results will represent only a subset of the MS community, we are confident that we will accomplish our goal of increasing the quality of life for those burdened with MS and NLUTD. Trial registration This trial is registered at ClinicalTrials.gov (NCT06072703), posted on Oct 10, 2023.https://doi.org/10.1186/s12894-023-01358-8Multiple sclerosisNeurogenic overactive bladderFunctional MRITranscranial magnetic stimulation
spellingShingle Betsy H. Salazar
Kristopher A. Hoffman
John A. Lincoln
Christof Karmonik
Hamida Rajab
Santosh A. Helekar
Rose Khavari
Evaluating noninvasive brain stimulation to treat overactive bladder in individuals with multiple sclerosis: a randomized controlled trial protocol
BMC Urology
Multiple sclerosis
Neurogenic overactive bladder
Functional MRI
Transcranial magnetic stimulation
title Evaluating noninvasive brain stimulation to treat overactive bladder in individuals with multiple sclerosis: a randomized controlled trial protocol
title_full Evaluating noninvasive brain stimulation to treat overactive bladder in individuals with multiple sclerosis: a randomized controlled trial protocol
title_fullStr Evaluating noninvasive brain stimulation to treat overactive bladder in individuals with multiple sclerosis: a randomized controlled trial protocol
title_full_unstemmed Evaluating noninvasive brain stimulation to treat overactive bladder in individuals with multiple sclerosis: a randomized controlled trial protocol
title_short Evaluating noninvasive brain stimulation to treat overactive bladder in individuals with multiple sclerosis: a randomized controlled trial protocol
title_sort evaluating noninvasive brain stimulation to treat overactive bladder in individuals with multiple sclerosis a randomized controlled trial protocol
topic Multiple sclerosis
Neurogenic overactive bladder
Functional MRI
Transcranial magnetic stimulation
url https://doi.org/10.1186/s12894-023-01358-8
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