Fiber Supplementation After Bariatric Surgery

NCT ID: NCT05653648

Last Updated: 2024-02-29

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

COMPLETED

Clinical Phase

NA

Total Enrollment

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-02-13

Study Completion Date

2024-02-28

Brief Summary

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Test compliance and gastrointestinal tolerance of a 30-day dose of potato starch in bariatric patients, and determine if short chain fatty acids, specifically butyrate, increase in response to the dosages of potato starch.

Detailed Description

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Despite the successful weight loss associated with bariatric surgery, epidemiology studies have observed conflicting associations between bariatric surgery and incidence of colorectal cancer (CRC), potentially suggesting an increased risk of CRC post-surgery. The investigators have identified a potential mechanism between bariatric surgery and CRC via profiling dietary intake, gut microbiota colonization, and short-chain fatty acid (SCFA) production, including acetate, propionate, and butyrate. They have demonstrated a decrease in SCFA after bariatric surgery. As intestinal SCFAs inhibit colon cancer cell proliferation, these results may suggest a mechanism linking bariatric surgery, SCFA levels, and CRC.

The objective of this protocol is to implement a 30-day fiber supplement, made from potato starch, as previous studies have successfully demonstrated that a resistant starch supplement increases intestinal SCFAs in healthy populations. The resistant starch supplement will be initiated 90-days post-bariatric surgery, which is when fiber supplements are tolerated. Fecal samples will be collected pre- and post-supplement and a targeted liquid chromatography/mass spectrometry platform will quantify levels of SCFAs. As SCFA levels have been associated with reduced hunger in other studies, the investigators will determine if hunger levels are altered in response to the supplement. The proposed study is described in the following aims:

Specific Aim 1. Assess compliance and gastrointestinal tolerance of a 30-day dose of potato starch in bariatric patients.

Specific Aim 2. Determine if short chain fatty acids, specifically butyrate, increase in response to the dosages of potato starch.

Exploratory Aim. Determine if there are changes in dietary intake, appetite, and satiety in response to the dosages of potato starch.

Conditions

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Bariatric Surgery Candidate

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Potato Starch Supplement

Participants will consume a 24 grams of potato starch on Days 1-15 and 48 grams of potato starch on Days 16-30.

Group Type EXPERIMENTAL

Potato starch

Intervention Type DIETARY_SUPPLEMENT

Participants will consume 24 grams (days 1-15) and 48 grams (days 16-30) of potato starch. Potato starch is a type 2 resistant starch that is available over the counter.

Interventions

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Potato starch

Participants will consume 24 grams (days 1-15) and 48 grams (days 16-30) of potato starch. Potato starch is a type 2 resistant starch that is available over the counter.

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

* Adults ≥ 18 years
* Bariatric surgery at Dartmouth Medical Center
* Daily protein intake ≥ 60 grams
* Daily fluid intake ≥ 48 fl oz.

Exclusion Criteria

* \> 550 lbs at bariatric surgery date.
* Allergies to potato starches.
* Surgical complications per bariatric team members
* Individuals who cannot speak and/or write in English.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Dartmouth-Hitchcock Medical Center

OTHER

Sponsor Role lead

Responsible Party

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Jennifer L. Meijer

Assistant Professor, Department of Medicine

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Dartmouth-Hitchcock Medical Center

Lebanon, New Hampshire, United States

Site Status

Countries

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United States

Other Identifiers

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Study02001775

Identifier Type: -

Identifier Source: org_study_id

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