Effects of Whey Protein in Type 2 Diabetics

NCT ID: NCT01944449

Last Updated: 2017-10-11

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

60 participants

Study Classification

INTERVENTIONAL

Study Start Date

2013-09-30

Study Completion Date

2016-03-31

Brief Summary

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The objectives of this study are to examine the effects of chronic, (12 weeks) administration of Whey protein on HbA1c, and postprandial glucose (PPG).

Detailed Description

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Whey protein that accounts for 20% of whole milk protein seems to induce insulinotropic /β-cell-stimulating and glucose lowering effects via bioactive peptides generated during its gastrointestinal digestion. These bioactive peptides stimulate the release of GLP-1, serve as endogenous inhibitors of DPP-4 and cause inhibitory activity against α-glucosidase activity, which might be an additional mechanism accounting for the glucose lowering effects of Whey.

In the investigators previous study, the acute administration with Whey protein resulted in postprandial insulinotropic and glucose lowering effects in type 2 diabetic subjects. This was associated with increased postprandial response of the total-GLP-1 and of intact-GLP-1, suggesting that the peptides generated from Whey protein may have dual beneficial effects (increasing incretin production and decreasing incretin degradation by DPP-4) on glycemia regulation in subjects with type 2 diabetes.

Addition of Whey protein to the meal, significantly decreased PPG in healthy and in type 2 diabetic subjects and there are also clinical evidence in non-diabetics individuals, that acute and chronic administration of Whey protein has antihypertensive activity.

The effect of chronic administration of Whey protein on HbA1c and PPG have not been examined previously in type 2 diabetics.

Conditions

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Type 2 Diabetes

Keywords

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Type 2 diabetes (T2D) Whey Protein Concentrate (WPC)

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Whey Protein (WPC) at breakfast

The subjects in Whey Protein (WPC) group will consume WPC (35gr) powder in bottles mixed with 250 ml milk, making a total of 42 g protein, at breakfast, for 12 weeks.

Group Type EXPERIMENTAL

Whey Protein (WPC) at breakfast

Intervention Type DIETARY_SUPPLEMENT

The type 2 diabetic subjects in Whey Protein (WPC) group will consume at breakfast WPC (35 g) in 250ml of milk, Total 42 g protein breakfast for 12 weeks.

Other Protein Sources at breakfast

The subjects will consume also 42 g protein at breakfast but from different source, for 12 weeks.

Group Type EXPERIMENTAL

Other Protein Sources at breakfast

Intervention Type DIETARY_SUPPLEMENT

The type 2 diabetic subjects in PBdiet will consume also 42 g of protein but from different sources : i.e soy,tuna, eggs, at breakfast in bottle mixed with 250 ml water twice a day (30 min before breakfast and before dinner) for 12 weeks.

Low Protein at breakfast

The subjects will consume 17 g protein breakfast namely from soy for 12 weeks.

Group Type ACTIVE_COMPARATOR

Low Protein at breakfast

Intervention Type DIETARY_SUPPLEMENT

The type 2 diabetic subjects in CBdiet group will consume only 17 g protein, namely from at breakfast for 12 weeks.

Interventions

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Whey Protein (WPC) at breakfast

The type 2 diabetic subjects in Whey Protein (WPC) group will consume at breakfast WPC (35 g) in 250ml of milk, Total 42 g protein breakfast for 12 weeks.

Intervention Type DIETARY_SUPPLEMENT

Other Protein Sources at breakfast

The type 2 diabetic subjects in PBdiet will consume also 42 g of protein but from different sources : i.e soy,tuna, eggs, at breakfast in bottle mixed with 250 ml water twice a day (30 min before breakfast and before dinner) for 12 weeks.

Intervention Type DIETARY_SUPPLEMENT

Low Protein at breakfast

The type 2 diabetic subjects in CBdiet group will consume only 17 g protein, namely from at breakfast for 12 weeks.

Intervention Type DIETARY_SUPPLEMENT

Other Intervention Names

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WBdiet PBdiet CBdiet

Eligibility Criteria

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Inclusion Criteria

1. Type 2 diabetes patients
2. HbA1C \> 7.5%
3. Duration of diabetes: \< 20 years
4. Subjects ≥ 30 and ≤70 years of age
5. BMI: 22 to 35 kg/m2
6. All oral antidiabetic treatments will be allowed. No insulin
7. Normal liver and kidney function
8. Normal thyroid function
9. Stable physical activity pattern during the three months immediately preceding study
10. No metabolic disease other than diabetes
11. Normal TSH and FT4 levels
12. Acceptable health beside diabetes based on interview, medical history, physical examination, and laboratory tests
13. Read and understood the informed consent form and signed it voluntarily

Exclusion Criteria

1. Type 1 diabetes
2. Treatment with Insulin
3. Clinically significant pulmonary, cardiac, renal, hepatic, neurologic, psychiatric, infectious, malignant disease
4. Abnormal liver function tests defined as an increase by a factor of at least 2 above the upper normal limit of alanine aminotransferase (ALT) and/or aspartate aminotransferase (AST)
5. Pregnancy or lactation
6. Illicit drug abuse or alcoholism
7. Subjects taking anoretic drugs during the month immediately prior to study
8. Subjects on steroid treatment
9. Those with major illnesses, liver, heart, kidney, lung, infectious, neurological, psychiatric, immunological or neoplastic diseases,
10. Those with eating disorders
11. Known hypersensitivity to milk components
12. Subjects after bariatric surgery, will be excluded
13. Subjects known by the principal investigator to be unable to cooperate for any reason.
Minimum Eligible Age

30 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Hospital de Clinicas Caracas

OTHER

Sponsor Role collaborator

Tel Aviv University

OTHER

Sponsor Role lead

Responsible Party

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Daniela Jakubowicz

Prof. Daniela Jakubowicz MD

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Julio Wainstein, MD

Role: PRINCIPAL_INVESTIGATOR

Head of Diabetes Unit E. Wolfson Medical Center Israel

Daniela Jakubowicz, MD

Role: PRINCIPAL_INVESTIGATOR

Hospital de Clinicas Caracas, Venezuela

Locations

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Daniela Jakubowicz

Holon, N/A = Not Applicable, Israel

Site Status

Daniela Jakubowicz MD

Caracas, N/A = Not Applicable, Venezuela

Site Status

Countries

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Israel Venezuela

Other Identifiers

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HCCCBI 057-2011-165

Identifier Type: -

Identifier Source: org_study_id