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CompletedNCT01141803Updated Jul 20, 2016

Effect of Apple and Apple Pomace on Inflammation and Cholesterol Metabolism in Healthy Overweight

An interventional study of Apples and Apple pomace in Cardiovascular Diseases, sponsored by University of Copenhagen. Completed at 1 site in Denmark. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2016-07-20.

Sponsored by University of Copenhagen · Not applicable, Interventional, and Prevention

Phase
Not applicable
Study type
Interventional
Enrollment
37
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The investigators will assess the protective and antiinflammatory effects of processed fruit and fruit fibre in overweight subjects with signs of metabolic syndrome. A single-blinded parallel study is conducted to investigate the protective effects of fruit fibre on colonic epithelium. Relevant signalling pathways related to cholesterol metabolism, vascular inflammation, oxidative defence, apoptosis and sterol metabolism will be targeted. Volunteers are randomly assigned one of three groups. They are instructed to follow a polyphenol and pectin restricted diet for six weeks. The last four weeks in this six week period, the restricted diet is supplemented with whole apples (550g/day), apple pomace (22g/day) or nothing. Blood, urine, faecal samples and colon biopsies are collected before and after the four weeks intervention period.

02

Conditions studied

  • Cardiovascular Diseases

Keywords

  • Apple
  • Apple pomace
  • Metabolomics
  • Gene expression
  • Lipid metabolism
  • Prevention
  • Antiinflammatory effect
03

In context

Cardiovascular Diseases

4,904 studies on the registry are indexed under Cardiovascular Diseases; 919 are open to participants now.

This study's enrollment of 37 is below the median of 100 across 2,738 interventional studies indexed under Cardiovascular Diseases.

Browse Cardiovascular Diseases studies →

Lead sponsor

University of Copenhagen is the lead sponsor of 450 studies on the registry; 61 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Healthy
  • BMI over 30
  • No daily medication
  • Not strenuous exercise > 10hours/week
  • No blood donation 3 months before or during the study

Exclusion criteria

Exclusion Criteria:

  • Smoking
  • Simultaneous participation in other research projects
  • Use of any dietary supplements
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Investigator)
Enrollment
37 participants (actual)

Study arms

  • No intervention
    control
  • Active comparator
    Apples

    Dietary Supplement: Apples

  • Active comparator
    Apple pomace

    Dietary Supplement: Apple pomace

Interventions

  • Dietary supplementApples

    550g of apples/day

  • Dietary supplementApple pomace

    22g apple pomace/day

06

What researchers measure

Primary outcomes

  1. Blood lipid profile (triacylglycerol and total-, LDL- and HDL-cholesterol)

    Time frame: Measured at week 2

  2. Blood lipid profile (triacylglycerol and total-, LDL- and HDL-cholesterol)

    Time frame: Measured at week 6

Secondary outcomes

  1. Blood pressure

    Time frame: Measured at week 2

  2. Blood pressure

    Time frame: Measured at week 6

  3. Anthropometry (weight, height, waist and hip circumference)

    Time frame: Measured at week 2

  4. Anthropometry (weight, height, waist and hip circumference)

    Time frame: Measured at week 6

  5. Inflammatory marker (hs-CRP)

    Time frame: Measured at week 2

  6. Inflammatory marker (hs-CRP)

    Time frame: Measured at week 6

  7. Faeces analyses (metabolomics, pH, bile acids, short-chain fatty acids)

    Time frame: Measured at week 2

  8. Faeces analyses (metabolomics, pH, bile acids, short-chain fatty acids)

    Time frame: Measured at week 6

  9. Urine analyses (metabolomics)

    Time frame: Measured at week 2

  10. Urine analyses (metabolomics)

    Time frame: Measured at week 6

  11. Serum insulin, IGF-1 and IGFBP-3 levels

    Time frame: Measured at week 2

  12. Serum insulin, IGF-1 and IGFBP-3 levels

    Time frame: Measured at week 6

  13. Gene expression in white blood cells and colon tissue

    Time frame: Measured at week 2

  14. Gene expression in white blood cells and colon tissue

    Time frame: Measured at week 6

  15. Enzyme activity in lysed erythrocytes (glutathione peroxidase)

    Time frame: Measured at week 2

  16. Enzyme activity in lysed erythrocytes (glutathione peroxidase)

    Time frame: Measured at week 6

07

Study locations

1 site
  • Department of Human Nutrition, LIFE, University of Copenhagen
    Frederiksberg, 1951, Denmark
08

References and documents

Individual participant data

Plan to share: Yes

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 20, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01141803
Lead sponsor
University of Copenhagen
Collaborators
Technical University of Denmark, Central Jutland Regional Hospital
Responsible party
Arne Astrup (professor, University of Copenhagen) — Principal investigator
First posted
Jun 11, 2010
Start date
Jul 2008
Primary completion
Dec 2009
Completion
Oct 2010
Last update
Jul 20, 2016

Study contacts

Susanne Bügel, PhD
study director · Department of Human Nutrition, LIFE, University of Copenhagen, Denmark

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jul 2016. You cannot join it, but the record below documents what was studied.

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