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The Effect of Prebiotics on Gastrointestinal Functioning and Metabolism

4. juli 2019 opdateret af: Maastricht University Medical Center

Effect of Prebiotic Fibre on Intestinal Health and Functioning

The study will investigate the effect of cereal based prebiotic fibres on intestinal health and functioning and host metabolism.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

A human dietary intervention study will be performed in overweight to obese subjects with a slow gastrointestinal transit time comparing the effects of a soluble prebiotic fibre vs. placebo on gut health, including gut microbiota composition, gastrointestinal transit time, metabolic health and quality of life.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

48

Fase

  • Ikke anvendelig

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

20 år til 50 år (Voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Overweight to obese men and women (BMI ≥ 25 kg/m2 <35 kg/m2)
  • Aged 20-50 years
  • Caucasian
  • Normal fasting glucose (<6.1 mmol/L.)
  • Normal blood pressure (systolic blood pressure 100-140 mmHg, diastolic blood pressure 60-90 mmHg)
  • Weight stable in last 3 months (±2 kg)
  • A low defecation frequency, <4 times/week and no constipation or underlying pathology, as determined by gastro-intestinal questionnaires).
  • A slow whole gut transit (>35h)

Exclusion Criteria:

  • Woman lactating, pregnant (where pregnancy is defined as the state of a female after conception and until the termination of gestation, confirmed by a positive hCG laboratory test) or (post)-menopausal
  • Regular smokers
  • People with intensive fitness training, eg. athletes (≥3 per week ≥ 1 hour training)
  • Diabetes Mellitus (defined as FPG ≥ 7.0 mmol/l and or 2h PG ≥ 11.1 mmol/l)
  • Gastro-intestinal diseases or abdominal surgery, cardiovascular diseases, cancer, liver or kidney malfunctioning (determined based on ALAT and creatinine levels, respectively) disease with a life expectation shorter than 5 years
  • Following a hypocaloric diet
  • Gluten intolerance
  • Regular use of laxation products, or use of antibiotics, probiotics or prebiotics 3 months prior to the start of the study

  • More than 2 symptoms occurring over a period of 12 weeks in the preceding 12 months such as

    1. Straining in >1/4 defecations;
    2. Lumpy or hard stools in >1/4 defecations;
    3. Sensation of incomplete evacuation in >1/4 defecations;
    4. Sensation of anorectal obstruction/blockade in >1/4 defecations
    5. Manual maneuvers to facilitate >1/4 defecations (e.g., digital evacuation, support of the pelvic floor); and/or
    6. <3 defecations/week
  • Current use of medication interfering with study intervention or interfering with study endpoints/hypotheses
  • Not to be able to understand the study information
  • Blood donation 2 months prior to the study and during the study
  • Participation in other studies

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Grundvidenskab
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Tredobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Placebo komparator: Placebo
12 weeks placebo maltodextrin 15g/day ( 5 g in beverage, to be consumed three times a day)
Kosttilskud: Placebo
12 weeks daily intake of 15g of maltodextrin
Andre navne:
  • Maltodextrin
Eksperimentel: soluble wheat bran fibre
12 weeks soluble wheat bran fibre 15g/day (5 g in beverage, to be consumed three times a day)
Kosttilskud: soluble wheat bran fibre
12 weeks daily intake of 15g of soluble wheat bran fibre

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Whole gut transit time [hours]
Tidsramme: measured at baseline at week 1 and directly after the 12 week supplementation
Whole gut transit time as measured by radio-opaque marker method
measured at baseline at week 1 and directly after the 12 week supplementation

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Gastric emptying [min]
Tidsramme: measured at baseline at week 1 and directly after the 12 week supplementation
Gastric emptying measured by isotope breath test
measured at baseline at week 1 and directly after the 12 week supplementation
Oro-cecal transit time [min]
Tidsramme: measured at baseline at week 1 and directly after the 12 week supplementation
Oro-cecal transit time measured by hydrogen breath test
measured at baseline at week 1 and directly after the 12 week supplementation
Defecation frequency (bowel movement per day)
Tidsramme: measured at baseline at week 1 and directly after the 12 week supplementation
Defecation frequency as measured via questionnaire
measured at baseline at week 1 and directly after the 12 week supplementation
Energy expenditure
Tidsramme: measured at baseline at week 1 and directly after the 12 week supplementation
Energy expenditure measured by indirect calorimetry
measured at baseline at week 1 and directly after the 12 week supplementation
Substrate oxidation
Tidsramme: measured at baseline at week 1 and directly after the 12 week supplementation
Fat and carbohydrate oxidation measured by indirect calorimetry
measured at baseline at week 1 and directly after the 12 week supplementation
Plasma inflammatory cytokines Interleukin-6,8 and 1 (pg/ml)
Tidsramme: measured at baseline at week 1 and directly after the 12 week supplementation
IL-6, IL8,IL-1 measured by enzyme linked immunosorbent assay
measured at baseline at week 1 and directly after the 12 week supplementation
Adipose tissue gene expression
Tidsramme: measured at baseline at week 1 and directly after the 12 week supplementation
Adipose tissue gene expression measured by quantitative real time polymerase chain reaction
measured at baseline at week 1 and directly after the 12 week supplementation
Gut permeability
Tidsramme: measured at baseline at week 1 and directly after the 12 week supplementation
Gut permeability as measured by multi sugar assay
measured at baseline at week 1 and directly after the 12 week supplementation
Microbiota composition
Tidsramme: measured at baseline at week 1 and directly after the 12 week supplementation
Microbiota composition as measured by illumina sequencing in feces
measured at baseline at week 1 and directly after the 12 week supplementation
Fecal Short chain fatty acid concentrations
Tidsramme: measured at baseline at week 1 and directly after the 12 week supplementation
Fecal Short chain fatty acid concentrations measured by ion exchange chromatography with conductivity detection
measured at baseline at week 1 and directly after the 12 week supplementation
Plasma short chain fatty acid concentrations
Tidsramme: measured at baseline at week 1 and directly after the 12 week supplementation
Plasma short chain fatty acid concentrations measured by liquid chromatography-mass spectrometry
measured at baseline at week 1 and directly after the 12 week supplementation

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Maastricht University Medical Center

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. juli 2015

Primær færdiggørelse (Faktiske)

1. december 2016

Studieafslutning (Faktiske)

1. december 2016

Datoer for studieregistrering

Først indsendt

23. marts 2015

Først indsendt, der opfyldte QC-kriterier

1. juli 2015

Først opslået (Skøn)

7. juli 2015

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

8. juli 2019

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

4. juli 2019

Sidst verificeret

1. oktober 2018

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • NL52300.068.15

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Placebo

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Sponsorer og samarbejdspartnere

Medicinske tilstande

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Betingelser

Sjældne sygdomme

Narkotikainterventioner

Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

Abonner