NCT00750438

Brief Summary

This study explores the nutritional effects of fibre. Short chain fatty acid(SCFA), such as propionate, are produced through the fermentation of fibre in the bowel. SCFA are thought to have direct beneficial effects on the gut, appetite, weight and fat distribution. This study will look into these effects by conducting a dose finding study and then a randomised controlled study using healthy human volunteers.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
60

participants targeted

Target at P25-P50 for not_applicable obesity

Timeline
Completed

Started Sep 2008

Longer than P75 for not_applicable obesity

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

September 1, 2008

Completed
8 days until next milestone

First Submitted

Initial submission to the registry

September 9, 2008

Completed
1 day until next milestone

First Posted

Study publicly available on registry

September 10, 2008

Completed
3.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2012

Completed
3 months until next milestone

Study Completion

Last participant's last visit for all outcomes

October 1, 2012

Completed
7.1 years until next milestone

Results Posted

Study results publicly available

November 7, 2019

Completed
Last Updated

November 19, 2019

Status Verified

November 1, 2019

Enrollment Period

3.8 years

First QC Date

September 9, 2008

Results QC Date

October 16, 2019

Last Update Submit

November 11, 2019

Conditions

Keywords

ObesityShort chain fatty acidsAppetiteBody weightInsulin sensitivityPropionatePropionate ester

Outcome Measures

Primary Outcomes (3)

  • Appetite_Food Intake

    The change in food intake following 24 weeks of supplementation

    Baseline, 24 weeks

  • Body Weight

    Body weight was measured in all subjects to the nearest 0.1 kg (Tanita BC-418MA) while subjects were wearing light clothing.

    Baseline, 24 weeks

  • Body Weight - Number of Participants Gained ≥3% of Their Baseline Body Weight

    Body weight was measured in all subjects to the nearest 0.1 kg (Tanita BC-418MA) while subjects were wearing light clothing.

    Baseline, 24 weeks

Secondary Outcomes (2)

  • Adipose Tissue Distribution - Intra-abdominal Adipose Tissue

    24 weeks

  • Insulin Sensitivity - HOMA IR

    24 weeks

Study Arms (3)

Propionate ester

EXPERIMENTAL
Dietary Supplement: Propionate ester

Fermentable control

PLACEBO COMPARATOR
Dietary Supplement: Inulin

Non fermentable control

PLACEBO COMPARATOR
Dietary Supplement: Cellulose

Interventions

Propionate esterDIETARY_SUPPLEMENT

The subject will take propionate ester at the dose specified by the dose finding study, three times a day for 24 weeks

Propionate ester
InulinDIETARY_SUPPLEMENT

The subjects in this group will take inulin at a comparable dose, three times a day for 24 weeks

Fermentable control
CelluloseDIETARY_SUPPLEMENT

The subjects in this group will take the non fermentable carbohydrate, cellulose, at a comparable dose for 24 weeks.

Non fermentable control

Eligibility Criteria

Age21 Years - 65 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Healthy male and female volunteers aged between 21 and 65 years

You may not qualify if:

  • Weight change of more than 3kg in the preceding 2 months
  • Current smokers
  • Substance abuse
  • Excess alcohol intake
  • Pregnancy
  • Diabetes
  • Cardiovascular disease
  • Cancer
  • Gastrointestinal disease e.g. inflammatory bowel disease or irritable bowel syndrome
  • Kidney disease
  • Liver disease
  • Pancreatitis
  • Use of medications including: anti inflammatory drugs or steroids, cholesterol lowering medication, androgens, phenytoin, erythromycin or thyroid hormones.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Hammersmith Hospital

London, UK, W12 0NN, United Kingdom

Location

Related Publications (2)

  • Chambers ES, Viardot A, Psichas A, Morrison DJ, Murphy KG, Zac-Varghese SE, MacDougall K, Preston T, Tedford C, Finlayson GS, Blundell JE, Bell JD, Thomas EL, Mt-Isa S, Ashby D, Gibson GR, Kolida S, Dhillo WS, Bloom SR, Morley W, Clegg S, Frost G. Effects of targeted delivery of propionate to the human colon on appetite regulation, body weight maintenance and adiposity in overweight adults. Gut. 2015 Nov;64(11):1744-54. doi: 10.1136/gutjnl-2014-307913. Epub 2014 Dec 10.

  • Byrne CS, Chambers ES, Alhabeeb H, Chhina N, Morrison DJ, Preston T, Tedford C, Fitzpatrick J, Irani C, Busza A, Garcia-Perez I, Fountana S, Holmes E, Goldstone AP, Frost GS. Increased colonic propionate reduces anticipatory reward responses in the human striatum to high-energy foods. Am J Clin Nutr. 2016 Jul;104(1):5-14. doi: 10.3945/ajcn.115.126706. Epub 2016 May 11.

MeSH Terms

Conditions

ObesityBody WeightInsulin Resistance

Interventions

InulinCellulose

Condition Hierarchy (Ancestors)

OverweightOvernutritionNutrition DisordersNutritional and Metabolic DiseasesSigns and SymptomsPathological Conditions, Signs and SymptomsHyperinsulinismGlucose Metabolism DisordersMetabolic Diseases

Intervention Hierarchy (Ancestors)

StarchGlucansBiopolymersPolymersMacromolecular SubstancesDietary CarbohydratesCarbohydratesFructansPolysaccharidesBiomedical and Dental MaterialsManufactured MaterialsTechnology, Industry, and Agriculture

Results Point of Contact

Title
Prof Gary Frost
Organization
Imperial College London

Study Officials

  • Gary Frost, PhD

    Imperial College London

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
Yes

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

September 9, 2008

First Posted

September 10, 2008

Study Start

September 1, 2008

Primary Completion

July 1, 2012

Study Completion

October 1, 2012

Last Updated

November 19, 2019

Results First Posted

November 7, 2019

Record last verified: 2019-11

Data Sharing

IPD Sharing
Will not share

Locations