Effects of the Short-Chain Fatty Acids-Targeted Dietary Interventions on the Selected Autonomic Functions in Humans

NCT ID: NCT06851039

Last Updated: 2025-09-23

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

14 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-03-06

Study Completion Date

2025-09-15

Brief Summary

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Recent data feature short-chain fatty acids (SCFAs), products of gut microbial fermentation, as modulators of the blood pressure of the host. Such modulation may evoke (or arise from) changes in the autonomic reflexive mechanisms, but the link remains unexplored. Therefore, the study aims to explore potential relationship between the dietary intervention-induced changes in the SCFA plasma/fecal content and alterations in the sensitivity of the cardio-respiratory autonomic reflexes.

In this cross-over, placebo-controlled study, a group of healthy volunteers will undergo three distinct stages of a four-week dietary intervention, separated by at least two weeks of washout periods. During each stage, participants will receive one of the following interventions:

* raw potato starch (a source of resistant type 2 starch, which is a substrate for the endogenous production of SCFAs)
* sodium butyrate (a direct, exogenous source of this SCFA)
* an amylase-accessible waxy maze starch (a placebo). Plasma and fecal SCFA concentrations will be measured, along with the comprehensive evaluation of the cardio-respiratory parameters and the sensitivity of the autonomic reflexive mechanisms.

Detailed Description

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Conditions

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Healthy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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potato starch

Group Type EXPERIMENTAL

Potato starch supplementation

Intervention Type DIETARY_SUPPLEMENT

Participants will receive potato starch supplement, undergoing gut microbial fermentation and acting as an endogenous source of the short-chain fatty acids, including butyrate. Effects of these compounds on the selected autonomic functions (i.e. cardio-respiratory control) will be further investigated.

sodium butyrate

Group Type EXPERIMENTAL

Sodium butyrate supplementation

Intervention Type DIETARY_SUPPLEMENT

Participants will receive sodium butyrate supplement, acting as an exogenous source of the short-chain fatty acid butyrate. Effects of such compound on the selected autonomic functions (i.e. cardio-respiratory control) will be further investigated.

accessible maze starch

Group Type PLACEBO_COMPARATOR

Accessible starch supplementation

Intervention Type DIETARY_SUPPLEMENT

Participants will receive the accessible (digestible) waxy maze starch as placebo.

Interventions

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Potato starch supplementation

Participants will receive potato starch supplement, undergoing gut microbial fermentation and acting as an endogenous source of the short-chain fatty acids, including butyrate. Effects of these compounds on the selected autonomic functions (i.e. cardio-respiratory control) will be further investigated.

Intervention Type DIETARY_SUPPLEMENT

Sodium butyrate supplementation

Participants will receive sodium butyrate supplement, acting as an exogenous source of the short-chain fatty acid butyrate. Effects of such compound on the selected autonomic functions (i.e. cardio-respiratory control) will be further investigated.

Intervention Type DIETARY_SUPPLEMENT

Accessible starch supplementation

Participants will receive the accessible (digestible) waxy maze starch as placebo.

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

* age 18-40 years

Exclusion Criteria

* chronic disease of the nervous, cardiovascular or respiratory system
* disease of the digestive system, including history of the intestinal surgery, inflammatory bowel disease, celiac disease, lactose intolerance and other malabsorption disorders
* blood pressure-lowering treatment within the past year
* tobacco smoking within the past year
* antibiotic/probiotic treatment and laxative/prokinetic usage in three months preceding the anticipated enrollment
Minimum Eligible Age

18 Years

Maximum Eligible Age

40 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Wroclaw Medical University

OTHER

Sponsor Role lead

Responsible Party

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Rafał Seredyński

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Wroclaw Medical University

Wroclaw, Lower Silesian Voivodeship, Poland

Site Status

Countries

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Poland

Other Identifiers

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STM.A090.20.110

Identifier Type: -

Identifier Source: org_study_id

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