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Completed

NCT Number: NCT03057444

Resistant Starch, Gut Bacteria and Diabetes

The aim of the study is to investigate, if resistant starch type III increases butyrate-producing bacteria in the gut of (pre-) diabetic subjects. Diabetic blood parameters are also of interest.

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Institute of Clinical Nutrition

Stuttgart, Baden-Wurttemberg, 70599, Germany

About this study

Other studies show that diabetics have less butyrate-producing bacteria species in the gut compared to non-diabetes patients and diabetes patients who are taking metformin. Moreover, studies demonstrate that resistant starch increases the butyrate-producing bacteria species. Furthermore, studies show that butyrate has on effect on blood glucose and insulin homeostasis.

The aim in this study is to investigate, if resistant starch typ III increases butyrate-producing bacteria in the gut of (pre-) diabetic subjects, The effects on blood glucose, insulin and HbA1c are investigated as well.

Patients included in the study are typ 2 diabetics with lifestyle interventions, insulin or antidiabetic medication (sulfonylureas, glinides, SGLT2-inhibitors, glitazone) or pre-diabetics.

They get 2x 5g per day the food supplement SymbioIntest (resistant starch types III) over 8 weeks.

Study examinations are before intervention, after 4 weeks and 8 weeks. Stool samples are collected before intervention and each 14 days consecutively until the end of intervention.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Male or female adult persons (≥ 18 years)
  • Type 2 diabetes mellitus discontinued with lifestyle interventions or insulin therapy or oral antidiabetic therapy (sulphonylureas, glinides, SGLT-2 (sodium/glucose cotransporter 2) inhibitors, glitazone) or a prediabetic metabolism
  • It is foreseeable that no therapy with metformin or α-glucosidase inhibitors or DPP-4 (Dipeptidyl peptidase-4) inhibitors is initiated during the period of study (8 weeks)
  • willingness not to systematically change diet and lifestyle habits during the study
  • Adequate understanding of the German language and sufficient psychological condition to understand the information and instructions associated with the study and to complete questionnaires and assessment scales
  • Signed informed consent

Exclusion criteria

  • Treatment of Type II diabetes mellitus by metformin or α-glucosidase inhibitors or DPP-4 inhibitors
  • Diminished diabetic metabolic position or medical necessity to convert the therapy in the foreseeable future (HbA1c ≥ 7% or fasting glucose ≥ 152 mg / dl)
  • Participation in another clinical trial (currently or within the last 30 days)
  • Incompatibility with the ingredients of the investigational medicinal product
  • Pregnancy or lactation
  • Inability to take the test preparation orally
  • changes in dietary habits and habits within the last 30 days
  • Antibiotics intake currently or within the last 30 days
  • Drug abuse in the last six months before the start of the study or ongoing. Alcohol abuse is defined as an average daily of more than 20 g of alcohol in women and more than 30 g of alcohol in men, based on the last six months
  • A state of health (including abnormal laboratory values) that, at the discretion of the investigator, does not allow study participation, evaluation of study parameters or the use of the investigational medicinal product
  • Accommodation in a clinic or similar facility, by administrative or judicial order

Treatment and study plan

SymbioIntest

Dietary Supplement

The intervention is 2x 5g per day the food supplement SymbioIntest (resistant starch types III) over 8 weeks.

Primary outcomes

  1. Change of gut bacteria

    Time frame: Participants will be followed for the time of eight weeks. Examinations take place at baseline, four and eight week

    quantitative Analyse with Next-Generation Sequencing

  2. Change of short chain fatty acid concentration in the gut

    Time frame: Participants will be followed for the time of eight weeks. Examinations take place at baseline, four and eight week

    gas chromatography

Secondary outcomes

  1. change from baseline in HbA1c at four weeks and eight weeks after consumption resistant starch type III

    Time frame: Participants will be followed for the time of eight weeks. Examinations take place at baseline, four and eight week.

  2. change from baseline in insulin at four weeks and eight weeks after consumption resistant starch type III

    Time frame: Participants will be followed for the time of eight weeks. Examinations take place at baseline, four and eight week.

  3. change from baseline in blood glucose at four weeks and eight weeks after consumption resistant starch type III

    Time frame: Participants will be followed for the time of eight weeks. Examinations take place at baseline, four and eight week

  4. Change from baseline in anthropometry at four weeks and eight weeks after consumption resistant starch type III

    Time frame: Participants will be followed for the time of eight weeks. Examinations take place at baseline, four and eight week

Other outcomes

  1. Change from baseline in PYY (Peptide YY) at four weeks and eight weeks after consumption resistant starch type III

    Time frame: Participants will be followed for the time of eight weeks. Examinations take place at baseline, four and eight week.

    with ELISA

  2. Change from baseline in GLP-1 (Glucagon-like peptide-1) at four weeks and eight weeks after consumption resistant starch type III

    Time frame: Participants will be followed for the time of eight weeks. Examinations take place at baseline, four and eight week.

    with ELISA

Sponsors and collaborators

Lead sponsor

University of Hohenheim

Other

Collaborators

  • Institut für Mikroökologie GmbH

Registry information

Official study title

Influence of Resistant Starch Type III on Butyrate-producing Gut Bacteria and Diabetes Parameter in (Pre-) Diabetes

Acronym: RSDD

Important dates

Study start
2017
Primary completion
2018
Study completion
2018
First posted
Feb 20, 2017
Registry last updated
Oct 26, 2018

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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