Effect Dietary Fructose on Fructose Kinetics in Type 2 Diabetes

NCT ID: NCT05717608

Last Updated: 2023-02-08

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

RECRUITING

Clinical Phase

NA

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-02-05

Study Completion Date

2026-04-30

Brief Summary

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Determine the kinetics of fructose metabolism and its role as a metabolic substrate following a high (100gr/day) vs low fructose diet (\<30 gram fructose intake per day isocaloric correction with dextrose) in type 2 diabetic subjects of SAS or Caucasian ethnicity.

Detailed Description

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The prevalence and accompanying morbidity and mortality of obesity and type 2 diabetes (T2D) is increasing on a global scale. Unfortunately the underlying (patho)physiological mechanisms are only partially understood. A key step in the development of negative health effects of metabolic disease might be via dietary fructose metabolism and its accompanying aberrant metabolite production, in which our gut microbiota plays a crucial role.

By bypassing the normal glucose metabolism pathway, fructose plays a role in the development of metabolic disease such as diabetes en fatty liver disease. The mechanism of this effect is unclear and possibly plays in the observation of ethnic specific metabolic risk factors. That is, subjects of different ethnicties (for instance South-Asian Surinamese (SAS)) have a higher risk and worse trajectory of metabolic diseases than Caucasians. Since gut microbiota is altered between these two ethnicities, we hypothesize that aberreant fructose catabolism in patients of SAS descent results in production of specific (gut microbiota derived) metabolites such as ethanol. In this study, fructose metabolism will thus be studied in patients of SAS and Caucasian Dutch descent. To this end the investigators will examine (13C stable isotope based) fructose fluxes before and after randomizing subjects into a four-week high- or low fructose diet. This study aims to elucidate the physiological and microbial catabolism of fructose and possible differences between these two ethnicities.

Conditions

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Type 2 Diabetes

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

high versus low fructose diet for 4 weeks in either caucasian or surinamese asian type 2 diabetes patients
Primary Study Purpose

OTHER

Blinding Strategy

DOUBLE

Participants Investigators
supplementation with either fructose or dextrose

Study Groups

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high fructose in caucasian dutch type 2 diabetes subjects

high (100gr/day) fructose diet for 4 weeks in type 2 diabetic subjects of Caucasian ethnicity.

Group Type ACTIVE_COMPARATOR

high vs low fructose in caucasian dutch or surinamese asian type 2 diabetes subjects

Intervention Type OTHER

oral ingestion of food supplement for 4 weeks

low fructose in caucasian dutch type 2 diabetes subjects

low fructose diet (\<30 gram fructose intake per day isocaloric correction with dextrose) for 4 weeks in type 2 diabetic subjects of Caucasian ethnicity.

Group Type PLACEBO_COMPARATOR

high vs low fructose in caucasian dutch or surinamese asian type 2 diabetes subjects

Intervention Type OTHER

oral ingestion of food supplement for 4 weeks

high fructose in surinamese asian type 2 diabetes

high (100gr/day) fructose diet for 4 weeks in type 2 diabetic subjects of SAS ethnicity.

Group Type ACTIVE_COMPARATOR

high vs low fructose in caucasian dutch or surinamese asian type 2 diabetes subjects

Intervention Type OTHER

oral ingestion of food supplement for 4 weeks

low fructose in surinamese asian type 2 diabetes

low fructose diet (\<30 gram fructose intake per day isocaloric correction with dextrose) for 4 weeks in type 2 diabetic subjects of SAS ethnicity.

Group Type PLACEBO_COMPARATOR

high vs low fructose in caucasian dutch or surinamese asian type 2 diabetes subjects

Intervention Type OTHER

oral ingestion of food supplement for 4 weeks

Interventions

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high vs low fructose in caucasian dutch or surinamese asian type 2 diabetes subjects

oral ingestion of food supplement for 4 weeks

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* 40 T2D patients (20 Caucasian and 20 SAS)
* 40-70 years old
* Male-female
* BMI 25-35 kg/m2
* Stable anti diabetic drugs for 3 months (metformin is obligatory)
* Stable medication use past 3 months
* Able to give informed consent

Exclusion Criteria

* \- Proton-pump inhibitor usage (known to effect gut microbiota)
* GLP1, SGLT2i or insulin use (known to effect gut microbiota)
* Antibiotic for the past 3 months (known to effect gut microbiota)
* Probiotic or symbiotic usage (known to effect gut microbiota)
* Pregnant women
* Chronic illness (including a known history of heart failure, renal failure (eGFR \<30 ml/min), pulmonary disease, gastrointestinal disorders, or hematologic diseases), or other inflammatory diseases
* Active infection
* Previous intestinal (e.g., bowel resection/reconstruction) surgery
* Smoking (due to its influence on gut microbiome)
* Vegetarian diet (since they have different microbiota)
* \>6 alcohol units per day or \>14 alcohol units per week
* Active malignancy
* HbA1c \>9% (75mmol/mol)
Minimum Eligible Age

40 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)

OTHER

Sponsor Role lead

Responsible Party

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Max Nieuwdorp

professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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max nieuwdorp

Role: PRINCIPAL_INVESTIGATOR

Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)

Locations

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Amsterdam UMC location AMC

Amsterdam, , Netherlands

Site Status RECRUITING

Countries

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Netherlands

Central Contacts

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cengiz callender, MD

Role: CONTACT

0031 20 5669111

max nieuwdorp, MD PhD

Role: CONTACT

0031 20 5669111

Facility Contacts

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max nieuwdorp, MD PhD

Role: primary

0031 20 5669111

Other Identifiers

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2022.0606 - NL82353.018.22

Identifier Type: -

Identifier Source: org_study_id

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