RATIONALE: Studying samples of blood and urine from healthy participants receiving antioxidant nutritional supplements may help doctors identify changes in biomarkers related to oxidative stress. PURPOSE: This clinical trial is studying how well a nutritional supplement capsule containing curcumin, green tea extract, Polygonum cuspidatum extract, and soybean extract works in healthy participants.
OBJECTIVES: Primary * To assess the effect of a specific combination nutritional capsule containing curcumin, green tea extract, Polygonum cuspidatum extract, and soybean extract on a specific biomarker of relevance to oxidative stress (NF-κB). * To estimate the mean change in blood lymphocyte NF-κB level before and after 2 weeks of consumption of the nutritional agent under study. OUTLINE: Participants receive oral curcumin/green tea extract/Polygonum cuspidatum extract/soybean extract capsule twice daily for 2 weeks. Participants are asked to keep a pill diary to track compliance. Blood and urine samples are collected from participants at baseline and after completion of study. Lymphocytes and serum from the blood samples are isolated and analyzed for NF-κB biomarker levels. Urine samples are also tested for oxidative stress marker levels. Samples are analyzed using an electrophoretic mobility shift assay (EMSA).
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
PREVENTION
Masking
NONE
Enrollment
11
Barbara Ann Karmanos Cancer Institute
Detroit, Michigan, United States
The Magnitude of Change in Blood Lymphocyte NF-kB Level
The target accrual goal is 15 subjects. It is hoped that of those 15, at least 10 will be intervention compliant, and provide both planned blood samples. NF-kB levels will be measured using a supershift assay, which tests the specificity and level of NF-kB in the sample by measuring the optical density of a scan. With 10 patients, the mean difference in blood lymphocyte NF-kB level could be estimated to within 0.44 standard 7 deviations, with 80% confidence. That is reasonable precision and confidence level for a small pilot study, and should provide sufficiently precise estimates for use in planning a subsequent study.
Time frame: 15 days
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