Pilot Study of the Effect of Purple Rice on Glucose Tolerance, Serum Lipids and Inflammation

Pilot Study of the Effect of Purple Rice on Glucose Tolerance, Serum Lipids and Inflammation.

This is a pilot study to demonstrate the effect of purple rice on post-prandial glucose and insulin. The purple color is due, like red wine grapes, mainly to the anthocyanins. The safety and tolerability of purple rice is similar to white or brown rice, but contains the purple elements common to other foods like grapes.

Study Overview

• Status: Completed
• Conditions: Type 2 Diabetic
• Intervention / Treatment: Dietary supplement: Purple Rice; Dietary supplement: Brown Rice

Detailed Description

This is a study that will have 1 screening visit and 9 study visits. Subjects will come to the screening visit for blood chemistry, health questionnaire and speak to the coordinator. Each subject passing inclusion/exclusion will go on to eat purple rice for 4 weeks and brown rice for 4 weeks. The 4-week feeding periods will be balanced and assigned randomly. The subjects will report to the metabolic kitchen to pick up their supply of 14 frozen rice dishes each week in a container and return the empty containers as a measure of compliance. At the end of each 4-week feeding period, subjects will come to the inpatient unit fasting from 9pm the prior night except for water. Subjects will have an intravenous line placed and fasting blood will be drawn for chemistry. Subjects will then be given glucose to drink and blood will be drawn from then IV line for glucose and insulin at time listed in the consent.

• Study Type: Interventional
• Enrollment (Actual): 10
• Phase: Not Applicable

Contacts and Locations

Study Locations

• United States
  • Louisiana
    • Baton Rouge, Louisiana, United States, 70808
      • Pennington Biomedical Research Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (ADULT, OLDER_ADULT)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Generally healthy male or female with a fasting glucose between 100 mg/mL and 126 mg/dL or with type 2 diabetes controlled on diet without diabetes medications.
• Eighteen years of age or older.
• Hemoglobin A1c(HgbA1c) less than 7%.

Exclusion Criteria:

• Pregnant or nursing.
• Taking a medication for diabetes (e.g. Metformin), a medication known to affect blood sugar (e.g. glucocorticoids), an anti-inflammatory medication (e.g. aspiring) or triglycerides (e.g. fibrates).
• Any chronic medication that has not had a stable dose for 1 month or longer.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: PREVENTION
• Allocation: RANDOMIZED
• Interventional Model: CROSSOVER
• Masking: SINGLE

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
EXPERIMENTAL: Purple Rice; Twice a day given purple rice with 5mg of resveratrol.	Dietary supplement: Purple Rice; Incorporate one cup of purple rice into dishes to be consumed at lunch and dinner each day for 4 weeks (equivalent of 4 ounces of uncooked rice/day).
ACTIVE_COMPARATOR: Brown RIce; Plain Purple rice given twice a day	Dietary supplement: Brown Rice; Incorporate one cup of brown rice into dishes to be consumed at lunch and dinner each day for 4 weeks (equivalent of 4 ounces of uncooked rice/day).

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Glucose Tolerance	Subjects will have an Intravenous line placed and fasting blood will be drawn. Subjects will then be given glucose to drink and blood will be drawn from an IV line for glucose and insulin.	10 weeks

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Serum Lipids	Subjects will have an Intravenous line placed and fasting blood will be drawn for a chemistry-15 panel and High-sensitivity C-reaction Protein. Subjects will then be given 75 grams of glucose to drink and blood will be drawn from an IV line for glucose and insulin.	10 weeks
Inflammation measured by highly sensitive C-reative protein test	A high-sensitivity CRP (hs-CRP), that can be done in the lab using a blood test.	10 weeks

Collaborators and Investigators

• Sponsor: Pennington Biomedical Research Center

Study record dates

Study Major Dates

• Study Start: September 1, 2012
• Primary Completion (ACTUAL): October 1, 2015
• Study Completion (ACTUAL): October 1, 2015

Study Registration Dates

• First Submitted: October 30, 2012
• First Submitted That Met QC Criteria: October 31, 2012
• First Posted (ESTIMATE): November 2, 2012

Study Record Updates

• Last Update Posted (ESTIMATE): December 18, 2015
• Last Update Submitted That Met QC Criteria: December 17, 2015
• Last Verified: December 1, 2015

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Pathologic Processes; Inflammation
• Other Study ID Numbers: PBRC 12002