Evaluation of Oral Alpha-Cyclodextrin for Decreasing Serum Cholesterol
- Cardiovascular disease (CVD) is a leading cause of death in developed countries. Although statin-type drugs are currently the most effective therapeutic agents for reducing CVD risk. One possible complementary approach involves the use of soluble dietary fibers that are known to reduce blood cholesterol levels. However, analysis has shown that most soluble fibers reduce total cholesterol levels by relatively small amounts.
- Alpha-Cyclodextrin (Alpha-CD), also sold in commerical form, is a soluble fiber derived from corn that is used as an ingredient in many foods, such as bread rolls, crackers, juices, and reduced fat spreads. It is added to food primarily as a fiber supplement but is also used to stabilize flavors, colors, vitamins, and fatty acids. Studies in animals and humans have shown that Alpha-CD may help to improve insulin resistance and lower LDL cholesterol levels with no apparent side effects. More research is needed to determine the effect of Alpha-CD on total cholesterol levels in healthy volunteers.
- To determine the effect of oral Alpha-CD on total cholesterol in a nondiabetic population.
- Individuals between 18 and 75 years of age who do not have type 1 or type 2 diabetes.
- This study will require three visits to the NIH Clinical Center.
- At the first visit, participants will provide information about current diet and exercise routines, and will have a physical examination with blood and urine tests. At the end of this visit, participants will be randomized to receive either Alpha-CD or placebo, and will be asked to take two 1 gram tablets three times a day, anytime from 1 hour before to the end of each meal. Participants will take a total of six tablets per day for 12 weeks.
- At the end of the first 12 weeks, participants will return to the clinical center for another interview and examination, and blood and urine tests. At the end of this visit, participants will receive the treatment not given in the first part of the study (either Alpha-CD or placebo), and will take tablets on the same schedule as before for 12 more weeks.
- Participants will wait for 1 week after stopping the previous study prescription before starting the next one.
- At the end of the second 12 weeks, participants will have a final interview and examination with blood and urine tests.
- Participants will be asked to keep 7-day food records before each clinic visit to be collected at the second and third visits. A short physical activity assessment will be collected at each visit to review any changes in physical activity.
|Study Design:||Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Crossover Assignment
Primary Purpose: Treatment
|Official Title:||Evaluation of Oral Alpha-Cyclodextrin for Decreasing Serum Cholesterol|
- Determine the effect of oral Alpha-CD on total cholesterol in a healthy population. [ Time Frame: 24-28 weeks ] [ Designated as safety issue: No ]
- Any changes in body weight and fasting glucose. [ Time Frame: 24-28 weeks ] [ Designated as safety issue: No ]
|Study Start Date:||March 2010|
|Study Completion Date:||February 2015|
|Primary Completion Date:||February 2015 (Final data collection date for primary outcome measure)|
Active Comparator: Group A
Randomized subjects receiveing active comparator
2g PO 3 times a day for 12-14 weeks
Placebo Comparator: Group B
Randomized subjects receiving placebo comparator
2 tablets PO 3 times a day for 12-14 weeks
Please refer to this study by its ClinicalTrials.gov identifier: NCT01131299
|United States, Maryland|
|National Institutes of Health Clinical Center, 9000 Rockville Pike|
|Bethesda, Maryland, United States, 20892|
|Principal Investigator:||Marcelo J Amar, M.D.||National Heart, Lung, and Blood Institute (NHLBI)|