Expired Study
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Columbus, Ohio 43210


Cardiovascular disease (CVD) is the leading cause of death in the United States. Short-term increases in blood sugar, or postprandial hyperglycemia (PPH), affect blood vessel function and increase the risk of CVD. Greater intakes of dairy foods have been associated with a lower risk of CVD, but whether these effects occur directly or indirectly by displacing foods in the diet that might increase CVD risk is unclear. The health benefits of dairy on heart health are at least partly attributed to its ability to limit PPH and resulting PPH-mediated responses leading to vascular dysfunction. This provides rationale to further investigate dairy as a dietary strategy to reduce PPH and risk for CVD. The objective of this study is to define the extent to which dairy milk, and its whey and casein protein fractions, protect against postprandial vascular dysfunction by reducing oxidative stress responses that limit nitric oxide bioavailability to the vascular endothelium in adults with prediabetes.

Study summary:

This study consists of four, 3-hour postprandial trials in response to consuming the following dietary treatments: 1. oral glucose challenge, 2. oral glucose challenge in combination with non-fat milk, 3. oral glucose challenge in combination with whey protein isolate, and 4. oral glucose challenge in combination with sodium caseinate. For three days preceding each trial, participants will be provided all meals to standardize physiologic responses to test meals. On each trial day, vascular function will be assessed and blood samples collected prior to and at 30 minute intervals for 3 hours following test meal ingestion.


Inclusion Criteria: 1. hemoglobin A1c 5.7-6.4% 2. non-dietary supplement user 3. no medications affecting vasodilation, inflammation, or energy metabolism 4. no CVD 5. nonsmokers 6. individuals having blood pressure <140/90 mmHg and total cholesterol <240 mg/dL Exclusion Criteria: 1. unstable weight (±2 kg) 2. vegetarian or dairy allergy 3. alcohol intake >3 drinks/day or >10 drinks/week 4. ≥7 hours/week of aerobic activity



Primary Contact:

Principal Investigator
Richard S Bruno, PhD, RD
Ohio State University

Backup Contact:


Location Contact:

Columbus, Ohio 43210
United States

There is no listed contact information for this specific location.

Site Status: N/A

Data Source: ClinicalTrials.gov

Date Processed: November 17, 2017

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