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| Name | Class |
|---|---|
| Mayo Clinic | OTHER |
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To determine the fat losses in stool associated with alpha-CD use in healthy volunteers, as compared to placebo when consumed with a standardized radiolabeled fatty meal.
This clinical investigation will determine the fat losses in stool associated with alpha-CD use as compared to placebo when ingested with a standardized liquid breakfast (100 microCi of [3H]triolein) and 20 microCi of [14C]tripalmitin). The ingested dose will be 2 g of α-CD at each of three meals per day for 2 days.
Eight subjects will be recruited in a two-way crossover design consisting of two treatment periods.
Treatment 1 requires all subjects to receive α-CD and a meal containing the fatty acid radiotracers Treatment 2 requires all subjects to receive placebo and a meal containing the fatty acid radiotracers All subjects will be observed for 48 hours as an in-patient, and a further 24 hours as an out-patient following the meal containing the radiotracer and will then undergo at least a further ≥ 14 day washout period before crossing over to the alternate treatment.
All subjects randomized to the α-CD treatment arm will receive 2 g of α-CD (2 x 1 g tablets), at each of three meals per day for 2 days. During the placebo phase, all subjects will receive two identical-looking placebo tablets.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Alpha-cycoldextrin | Active Comparator | All subjects randomized to receive Alpha-cycoldextrin will orally ingest two tablets containing Alpha-cyclodextrin, with their standardized liquid breakfast (100 micro Ci of [3H]triolein and 20 micro Ci of [14C]tripalmitin). The tablets will be consumed with 150 ml of still water immediately prior to consuming each meal. Subjects will be observed for a period of 48 hours as an in-patient, and then an additional 24 hours as an out-patient. During this time they will undergo a meal fatty acid metabolism study, through blood and fecal sampling, to assess meal fatty acid oxidation and storage. |
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| Placebo | Placebo Comparator | All subjects randomized to receive placebo will orally ingest two placebo tablets with their standardized liquid breakfast (100 micro Ci of [3H]triolein and 20 micro Ci of [14C]tripalmitin). The tablets will be consumed with 150 ml of still water immediately prior to consuming each meal. Subjects will be observed for a period of 48 hours as an in-patient, and then an additional 24 hours as an out-patient. During this time they will undergo a meal fatty acid metabolism study, through blood and fecal sampling, to assess meal fatty acid oxidation and storage. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Alpha-cyclodextrin | Dietary Supplement | Alpha-cyclodextrin (α-CD) is a soluble dietary fiber that has a history of use in foods and as a pharmaceutical excipient. Recently the ability of the fiber to bind to dietary fat has led to further investigation of the possible health benefits of dietary supplementation with this fiber. |
| Measure | Description | Time Frame |
|---|---|---|
| Radiolabeled lipid content in stool | The primary endpoint for this investigation is to measure the total excretion of radiolabeled fat in feces over 72 hours. | 72 hours |
| Measure | Description | Time Frame |
|---|---|---|
| Blood glucose levels | Blood Glucose will be measured hourly from fasting to 6 hours post radiotraced meal on the first day of each treatment period. | 6 hours |
| Measure | Description | Time Frame |
|---|---|---|
| Blood Trigliceride Levels | Blood Triglyceride concentrations will be measured hourly from fasting to 6 hours post radiotraced meal on the first day of each treatment period | 6 hours |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Michael D Jensen, M.D. | Mayo Clinic | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Mayo Clinic | Rochester | New South Wales | 55905 | Australia |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 21127475 | Result | Comerford KB, Artiss JD, Jen KL, Karakas SE. The beneficial effects of alpha-cyclodextrin on blood lipids and weight loss in healthy humans. Obesity (Silver Spring). 2011 Jun;19(6):1200-4. doi: 10.1038/oby.2010.280. Epub 2010 Dec 2. | |
| 23806736 | Result | Jarosz PA, Fletcher E, Elserafy E, Artiss JD, Jen KL. The effect of alpha-cyclodextrin on postprandial lipid and glycemic responses to a fat-containing meal. Metabolism. 2013 Oct;62(10):1443-7. doi: 10.1016/j.metabol.2013.05.015. Epub 2013 Jun 24. |
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| ID | Term |
|---|---|
| C032613 | alpha-cyclodextrin |
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| Placebo | Dietary Supplement | Identical looking placebo tablet to active (Alpha-cyclodextrin) |
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