Cocoa/Carob Polyphenols and Postprandial Changes in Type 2 Diabetes

  • STATUS
    Recruiting
  • participants needed
    25
  • sponsor
    National Research Council, Spain
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Updated on 16 February 2024
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metformin
polyphenol

Summary

The aim of this is study is to evaluate the effects of a single intake of a mixture of cacao and carob (rich in high molecular weight polyphenols) in postprandial metabolism in subjects with type 2 diabetes. Studies on the effects of polyphenols on postprandial (glucidic and lipidic) metabolism have commonly been performed in animal models and have used food extracts, ignoring high molecular weight polyphenols as relevant bioactive compounds. In this study, the potential of this kind of polyphenols for regulating postprandial disturbances in type 2 diabetes subjects, since these alterations increased the cardiovascular risk in these subjects, will be evaluated. The study has been designed in order to differentially evaluate the effect of intact polyphenols and that of microbial-derived phenolic metabolites.

Description

Twenty-five subjects with a recent diagnosis of type 2 diabetes will be recruited. Detailed inclusion and exclusion criteria are provided below.

The whole intervention has been divided in 3 treatments A, B and C, performed every 2 weeks in randomized order for each subject. In every treatment, subjects will attend to the Unit of Human Nutrition of the ICTAN-CSIC in fasting state and they will receive a high-sugar high-fat breakfast. Treatment A will be used as control and will only consist of breakfast. Treatment B is characterized by the administration of a mixture of cocoa and carob solved in milk together with breakfast. In treatment C, volunteers will consume the same amount of product 10 hours before attending to their visit, where the breakfast will be administrated once again. Food and drinks provided in the three visits (including milk used in treatment B) will be similar. The aim of treatment B is to elucidate the role of intact polyphenols, while treatment C will evaluate the effect of microbial-derived polyphenol metabolites.

Blood samples will be collected before breakfast and at times 60-120-180-240-270 min. Urine will be collected during their permanence at the Unit of Human nutrition of the ICTAN-CSIC. Feces will be collected as soon as they are generated after receiving treatments A and C. The following determinations will be performed in blood samples collected at different periods: glucose, insulin, triglycerides, uric acid, GLP-1, hepatic enzymes. Urine and feces will be used to evaluate phenolic metabolites. Additionally, a satiety test will be provided. It is expected that cocoa and carob supplementation, as compared to the control treatment, causes significant modifications in all the parameters indicated. Nevertheless, the primary outcome of this study is the decrease in postprandial insulin.

Details
Condition NIDDM, diabetes mellitus, type 2, Diabetes Mellitus, diabetes (pediatric), diabetes (pediatric), diabetes mellitus, type 2
Age 40years - 70years
Treatment No product (A)/mixture of coca and carob together with breakfast (B)/mixture of coca and carob 10 h before breakfast (C)
Clinical Study IdentifierNCT04383639
SponsorNational Research Council, Spain
Last Modified on16 February 2024

Eligibility

 Yes No Not Sure

Inclusion Criteria

Type 2 diabetes during the last 2 years and current treatment with metformin
Overweight or obesity (IMC = 26-40 kg/m2)

Exclusion Criteria

Subjects with a pharmaceutical treatment set to modify blood pressure, lipid profile or glucose
Subjects with diagnoses of cardiovascular diseases or thyroid diseases
Values above the following ones: glucose, > 125 mg/dL; triglycerides, > 350 mg/dL; total cholesterol, > 280 mg/dL; systolic blood pressure, > 150 mmHg; diastolic blood pressure, > 100 mmHg
Previous bariatric surgery
Volunteers currently participating in other studies or weight loss plans
Pregnant or breastfeeding women
Adherence to vegetarian diets or usual consumption of dietary supplements
Intolerance or allergy to some of the foods provided in the study
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