Interrogating the Pathophysiological Mechanisms of Constipation in Patients With Systemic Sclerosis

NCT ID: NCT05989763

Last Updated: 2025-06-26

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

NA

Total Enrollment

60 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-02-17

Study Completion Date

2029-09-01

Brief Summary

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The purpose of this study is to determine whether transcutaneous electrical acustimulation (TEA) alters systemic sclerosis (SSc)-related colonic and anorectal physiology by enhancing autonomic nervous system (ANS) function. The study will examine the effects of TEA on slow colonic transit (SCT) and rectal hyposensitivity (RH), to examine whether TEA improves autonomic dysfunction and modulates inflammatory pathways.

Detailed Description

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Conditions

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Systemic Sclerosis Constipation Gastrointestinal Motility Disorder Autonomic Dysfunction

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Transcutaneous Electrical Acustimulation (TEA)

Group Type EXPERIMENTAL

Transcutaneous Electrical Acustimulation (TEA)

Intervention Type DEVICE

TEA will then be administrated for 1 hour twice daily for a period of 4 weeks

Sham-TEA

Group Type SHAM_COMPARATOR

Sham-TEA

Intervention Type DEVICE

Sham TEA will then be administrated for 1 hour twice daily for a period of 4 weeks

Interventions

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Transcutaneous Electrical Acustimulation (TEA)

TEA will then be administrated for 1 hour twice daily for a period of 4 weeks

Intervention Type DEVICE

Sham-TEA

Sham TEA will then be administrated for 1 hour twice daily for a period of 4 weeks

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Patients with SSc-constipation from Aim 1 of the study
* Patients with SCT (\>20% radiopaque marks left in the colon 5 days (120 hours) after swallowing the Sitzmark capsule or patients with RH (defined in Aim 1)
* Patients not yet on therapy for constipation or patients who continue to experience constipation while on stable therapy for one month prior to TEA.

Exclusion Criteria

-Patients with symptoms of both diarrhea and constipation but not predominantly symptoms of constipation.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)

NIH

Sponsor Role collaborator

The University of Texas Health Science Center, Houston

OTHER

Sponsor Role lead

Responsible Party

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Zsuzsanna Hortobagyi Mcmahan

Associate Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Zsuzsanna H McMahan, MD, MHS (M-PI)

Role: PRINCIPAL_INVESTIGATOR

The University of Texas Health Science Center, Houston

Locations

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The University of Texas Health Science Center at Houston

Houston, Texas, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Zsuzsanna H McMahan, MD, MHS (M-PI)

Role: CONTACT

7135007531

Sharvari R Kamat

Role: CONTACT

713-500-6898

Facility Contacts

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Zsuzsanna H McMahan, MD, MHS (M-PI)

Role: primary

713-500-6883

Sharvari R Kamat

Role: backup

713-500-6898

Other Identifiers

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1R01AR081382-01A1

Identifier Type: NIH

Identifier Source: secondary_id

View Link

HSC-MS-23-0531

Identifier Type: -

Identifier Source: org_study_id

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