The Potential for Pomegranate Juice to Ameliorate Endothelial Dysfunction

Not Applicable

Completed

• Conditions: Healthy
• Interventions: Other: Controlled diet

• Registration Number: NCT01748617
• Lead Sponsor: Janet Novotny

Brief Summary

This study will be a randomized, double-blind, crossover intervention to investigate the health effects of acute ingestion of pomegranate juice when consumed with a high fat meal. After one week of controlled dietary intervention, subjects will consume a high fat morning meal supplemented with either pomegranate juice or a juice-free sweetened beverage. After consumption of the breakfast meal, subjects will be assessed for endothelial function and postprandial meal response.

Detailed Description

Not available

Study Timeline

• Study Start: 2012-12
• Study First Submitted: 2012-12-10
• Study First Submitted QC: 2012-12-10
• Study First Posted: 2012-12-12
• Primary Completion: 2013-01
• Study Completion: 2013-01
• Status Verified: 2013-08
• Last Update Submitted: 2013-08-27
• Last Update Posted: 2013-08-28

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 12

Inclusion Criteria

• Men and women between the ages of 25-70 years
• Body mass index (BMI) ≥ 19 and ≤ 38
• Willingness and ability to make scheduled appointments at clinical site as required by study protocol

Exclusion Criteria

• Known (self-reported) allergy or adverse reaction to study foods
• Presence of kidney disease, liver disease, gout, untreated or unstable hyperthyroidism, untreated or unstable hypothyroidism, certain cancers, gastrointestinal disease, pancreatic disease, other metabolic diseases, or malabsorption syndromes
• Type 2 diabetes requiring the use of oral antidiabetic agents or insulin
• Fasting triglycerides > 300 mg/dL
• Fasting glucose > 126 mg/dL
• Use of cholesterol lowering medication
• Blood pressure > 180/100 or hypertension treated with calcium channel blockers, direct acting vasodilators, or beta blockers
• Fingernails longer than 0.25 inch beyond the finger tip, or unwillingness to cut fingernails to this length during endothelial function testing
• History of bariatric or certain other surgeries related to weight control
• History of major surgery within 3 months of enrollment
• Smokers or other tobacco users (during 6 months prior to the start of the study)
• Antibiotic use during the intervention or for 3 months prior to the intervention period
• History of eating disorders or other dietary patterns which are not consistent with the dietary intervention (e.g., vegetarians, very low fat diets, high protein diets)
• Volunteers who have lost 10% of body weight within the last 6 months
• Unable or unwilling to give informed consent or communicate with study staff
• Self-report of alcohol or substance abuse within the past 12 months and/or current acute treatment or rehabilitation program for these problems (long-term participation in Alcoholics Anonymous is not an exclusion)
• Other medical, psychiatric, or behavioral factors that in the judgment of the Principal Investigator may interfere with study participation or the ability to follow the intervention protocol

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Pomegranate Juice	Controlled diet	Acute ingestion of pomegranate juice with high fat meal.
Control	Controlled diet	Acute ingestion of juice-free sweetened beverage with high fat meal.

Primary Outcome Measures

Name	Time	Method
Change in endothelial function	0 hour and 3 hour	After a consuming controlled diet for 1 week, subjects will report in the morning after a 12 hour fast. Upon arrival , subjects' endothelial function will be assessed by measuring endothelium-dependent flow mediated dilation of the peripheral bed (EndoPAT, Itamar Medical, Israel). For this test, subjects will rest in the supine position with a brachial blood pressure cuff on one arm and a finger tip probe on each of two fingers (one on the left hand, one on the right hand). After 5 minutes of rest, the blood pressure cuff will be inflated and remain inflated for 5 minutes. Then the cuff pressure will be released and the subject will remain resting for 5 additional minutes. This test will be repeated 3 hours after the test meal.

Trial Locations

Locations (1)

USDA Beltsville Human Nutrition Research Center; 🇺🇸 Beltsville, Maryland, United States