Bioavailability and Metabolism of Anthocyanins Following Acute Cranberry Consumption

Study Overview
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Brief Summary
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This study hypothesis is that anthocyanins from cranberry juice are bioavailable and can be measured in blood and urine after a single acute consumption of cranberry juice.

Detailed Description
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Little is known about the acute or chronic pharmacokinetics and metabolism of anthocyanins consumed in amounts relevant to usual dietary intakes. Thus, we hypothesize that anthocyanins from a single oral dose of cranberry juice will be absorbed quickly and can be measured in the circulation and urine within 2-4 h. Further, these anthocyanins will undergo a degree of metabolism but will circulate as well as be removed from blood as both parent compounds and metabolic products. This research proposal is submitted as an independent sub-study of an existing project, Effects of Cranberry Juice on Endothelial Function in Patients with Coronary Artery Disease, conducted by Joseph A. Vita, MD at the Boston University School of Medicine and sponsored by Ocean Spray Cranberries, Inc. This study includes 15 subjects aged 21-80 y and with demonstrated endothelial dysfunction and angiographically proven coronary artery disease who will receive a single dose of 480 mL cranberry juice. To test the hypotheses of the study to be conducted at HNRCA Tufts, we will utilize blood and urine samples that are already collected and stored. We will separate and analyze anthocyanins in these samples by HPLC and determine the pharmacokinetics of relevant anthocyanins.

Official Title
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Bioavailability and Metabolism of Anthocyanins Following Acute Cranberry (Vaccinium Macrocarpon)Consumption

Conditions
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Bioavailability, Cardiovascular Disease

Intervention / Treatment
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* Dietary Supplement: Experimental


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Stable CAD Patients Men & postmenopausal women Aged 21-80 years All Ethnic Groups English Language Exclusion Criteria: Subjects with heart failure are not eligible for participation in this study. Women with a positive urine beta HCG pregnancy test and lactating women or women who are planning to become pregnant. Clinical history of other major illness including end-stage cancer, renal failure, hepatic failure, gastrointestinal disorders that may impair absorption, or other conditions that in the opinion of the principal investigator make a clinical study inappropriate. Regular use of oral steroids Cigarette smoking and/or nicotine replacement use Regular daily intake of ≥ 2 alcoholic drinks Illicit drug use History of a psychological illness or condition such as to interfere with the subject's ability to understand the requirements of the study. No dietary supplements containing phenolic compounds, i.e., herbal preparations, or berry containing preparations (such as cranberry capsules) for one month prior to study admission. Treatment with an investigational new drug within the last 30 days.

Ages Eligible for Study
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Minimum Age: 21 Years
Maximum Age: 80 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Dietary Supplement<br>Cranberry Juice Consumption | Dietary Supplement: Experimental<br>* Administration of of 480 mL cranberry juice<br>* Other names: Cranberry Juice;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Anthocyanin levels in plasma and urine |  | 0, 2, and 4 hours |