The Metabolic Effects of a High Fructose Versus a High Glucose Diet in Overweight Men

NCT ID: NCT01050140

Last Updated: 2012-07-04

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

32 participants

Study Classification

INTERVENTIONAL

Study Start Date

2010-01-31

Study Completion Date

2011-04-30

Brief Summary

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Dietary consumption of fructose has increased by nearly 50% since 1960.

A high fructose diet (HFrD) results in greater visceral adiposity and systemic insulin resistance than a high glucose diet. The effects of fructose on liver fatty acid and ATP stores, systemic oxidative stress and cardiovascular status are not fully known.

Detailed Description

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The protocol will assess the following outcomes:

1. The ultimate fate of this increased hepatic fatty acid production following a high fructose vs. glucose diet
2. The effect of a high fructose vs. glucose diet on liver ATP stores
3. The effect of a high fructose vs. glucose diet on markers of oxidative stress
4. The effect of a high fructose vs. glucose diet on cardiovascular status

Factors critical to carbohydrate metabolism such as systemic insulin resistance, body composition, energy expenditure, physical activity will also be assessed.

32 centrally overweight healthy males with a low baseline fructose intake will be recruited. They will be randomised double blindly to receive 25% of their dietary energy requirements from either fructose or glucose for 14 days.

The sugars will first be taken in an energy balanced and then an overfeeding setting.

Conditions

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Hepatic Fatty Acid Metabolism Systemic Insulin Resistance Oxidative Stress Cardiovascular Status

Keywords

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fructose fatty liver disease diet

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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fructose

25% dietary energy from fructose

Group Type EXPERIMENTAL

high sugar diet

Intervention Type DIETARY_SUPPLEMENT

25% of dietary energy from fructose or glucose

glucose

25% dietary energy from glucose

Group Type ACTIVE_COMPARATOR

high sugar diet

Intervention Type DIETARY_SUPPLEMENT

25% of dietary energy from fructose or glucose

Interventions

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high sugar diet

25% of dietary energy from fructose or glucose

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

1. Body mass index 25-32
2. Waist \> hip circumference
3. Age 18-50 years
4. Male

Exclusion Criteria

1. Reported weight change \> 3 kg in prior 3/12
2. Active health problems
3. Contraindications to MRI scanning
4. Symptoms of functional bloating or irritable bowel syndrome
5. Abnormal liver or renal function tests
6. Random glucose greater than 11.0 mmol/L
7. Evidence of metabolic or viral liver disease as screened for by hepatitis B and C serology, and ferritin.
8. Alcohol intake \> 21 units per week
9. Vegetarianism
10. Normal daily fructose intake from drinks greater than that in 500ml of coca cola
11. Abnormal carbohydrate energy contribution to baseline diet - defined as greater than 2 standard deviations from the mean of the National Diet and Nutrition Survey 2002 data
Minimum Eligible Age

18 Years

Maximum Eligible Age

50 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Sponsors

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University of Nottingham

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Ian A Macdonald, PhD

Role: STUDY_CHAIR

School of Biomedical Sciences, Nottingham University, UK

Richard D Johnston, MRCP

Role: PRINCIPAL_INVESTIGATOR

School of Biomedical Sciences, Nottingham University, UK

Locations

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School of Biomedical Sciences, University of Nottingham

Nottingham, Nottinghamshire, United Kingdom

Site Status

Countries

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United Kingdom

References

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Johnston RD, Stephenson MC, Crossland H, Cordon SM, Palcidi E, Cox EF, Taylor MA, Aithal GP, Macdonald IA. No difference between high-fructose and high-glucose diets on liver triacylglycerol or biochemistry in healthy overweight men. Gastroenterology. 2013 Nov;145(5):1016-1025.e2. doi: 10.1053/j.gastro.2013.07.012. Epub 2013 Jul 19.

Reference Type DERIVED
PMID: 23872500 (View on PubMed)

Other Identifiers

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D/10/2009

Identifier Type: -

Identifier Source: org_study_id