- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00981981
Effect of the Molecular Weight of Oat β-glucan on Its Ability to Lower Serum Cholesterol (Bluebird)
Effect of Varying Dose and Molecular Weight on the Serum LDL-cholesterol-lowering Properties of Oat β-glucan
The purposes of this study were:
- To determine if a breakfast cereal containing 3g of high molecular weight oat beta-glucan fiber would lower low-density lipoprotein (LDL) - cholesterol (the "bad" cholesterol) compared to a control cereal containing wheat fiber.
- To determine if the LDL-cholesterol-lowering effect of oat beta-glucan fiber was reduced when the molecular weight of the fiber was reduced.
Study Overview
Status
Conditions
Detailed Description
The FDA allows a health claim that oat products may reduce the risk of heart disease, based on meta-analyses showing a cholesterol-lowering effect of oat beta-glucan, if the product delivers at least a 3g daily dose of oat beta-glucan. However, not all studies have demonstrated a lowering of oat products. This may be due to variable bioactivity of the beta-glucan in the oat products. The bioactivity of oat beta-glucan is believed to depend upon its viscosity in the gut. Factors influencing viscosity include the molecular weight (MW) of the beta-glucan molecule and the amount of soluble beta-glucan in the product, which, in turn determines its concentration (C) in solution. In finished food products both MW and C can be modified by beta-glucanase enzymes present in other ingredients in the food (eg. wheat flour), processing (eg. extrusion) and storage (eg. freezing of moist products such as muffins). The effect of altering the MW and solubility of beta-glucan in foods on glycemic responses has been shown, but a role for MW and C in cholesterol lowering has not been established.
To address this issue, this study was designed with 2 primary objectives:
- An extruded oat cereal containing 3g high-molecular weight oat β-glucan daily will reduce LDL cholesterol compared to a control wheat bran cereal.
- A significant correlation exists between LDL cholesterol and log(C×MW), where C is the amount of soluble β-glucan in the daily dose of cereal and MW is the molecular weight of the β-glucan in the cereal.
Study Type
Enrollment (Actual)
Phase
- Phase 2
Contacts and Locations
Study Locations
-
-
New South Wales
-
Sydney, New South Wales, Australia, 2006
- SUGiRS Human Nutrition Unit, School of Molecular & Microbial Biosciences, Unviersity of Sydney
-
-
-
-
Ontario
-
Guelph, Ontario, Canada, N1G 2W1
- Human Nutraceutical Research Unit, Department of Human Health and Nutritional Sciences, University of Guelph
-
Toronto, Ontario, Canada, M5C 2X3
- Glycemic Index Laboratories, Inc.
-
-
Quebec
-
Laval, Quebec, Canada
- Nutraceuticals and Functional Foods Institute, Faculte des science de l'agriculture et de l'alimentation, Universite Laval
-
-
-
-
Berkshire
-
Reading, Berkshire, United Kingdom, RG6 6LA
- Reading Scientific Services, Ltd (RSSL)
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- body mass index 18.5 to 40.0 kg/m^2
- no intention to lose or gain weight
- fasting total cholesterol 5.0 to 8.0 mmol/L
- fasting LDL cholesterol 3.0 to 5.0 mmol/L
- consuming diet containing <15% energy from saturated fat
Exclusion Criteria:
- use of any cholesterol-lowering drug, herbal or nutritional supplement
- regular consumption of oatmeal, oat bran or psyllium - containing cereals
- fasting serum triglycerides >4.0mmol/L
- serum aspartate transaminase >1.5 times upper limit of normal
- serum urea or creatinine >1.8 times upper limit of normal
- presence of diabetes or fasting glucose >6.9mmol/L
- presence or recent major surgical or medical event
- allergy to wheat or oats
- presence of condition or drug which alters digestion or absorption of foods
Study Plan
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: PARALLEL
- Masking: QUADRUPLE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
PLACEBO_COMPARATOR: Control
Wheat bran cereal
|
21g per day of ready to eat breakfast cereal containing wheat bran with 8g of total dietary fiber and 0.5g beta-glucan.
|
ACTIVE_COMPARATOR: 3g high MW
Cereal containing 3g high molecular weight oat beta glucan
|
20.2 grams per day of ready to eat cereal containing 6g total dietary fiber and 3g oat beta glucan with high molecular weight
|
ACTIVE_COMPARATOR: 4g medium MW
Cereal containing 4g oat beta glucan with medium molecular weight
|
28.5g ready to eat cereal containing 8g total dietary fiber and 4g oat beta glucan with medium molecular weight
|
ACTIVE_COMPARATOR: 3g medium MW
Cereal containing 3g oat beta glucan with medium molecular weight
|
21.1g of ready to eat cereal containing 6g total fiber and 3g oat beta glucan with a medium molecular weight
|
ACTIVE_COMPARATOR: 4g low MW
Cereal containing 4g oat beta glucan with low molecular weight
|
28.7g ready to eat cereal containing 8g total dietary fiber and 4g oat beta glucan with low molecular weight
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Serum LDL-cholesterol lowering effect of 3g high MW beta-glucan
Time Frame: 4 weeks
|
4 weeks
|
Correlation between serum LDL-cholesterol lowering and log(MW*C)
Time Frame: 4 weeks
|
4 weeks
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Blood pressure
Time Frame: 4 weeks
|
4 weeks
|
Total cholesterol
Time Frame: 4 weeks
|
4 weeks
|
Serum triglycerides
Time Frame: 4 weeks
|
4 weeks
|
Serum HDL cholesterol
Time Frame: 4 weeks
|
4 weeks
|
Fasting serum glucose
Time Frame: 4 weeks
|
4 weeks
|
Serum aspartate transaminase
Time Frame: 4 weeks
|
4 weeks
|
serum c-reactive protein
Time Frame: 4 weeks
|
4 weeks
|
Serum urea
Time Frame: 4 weeks
|
4 weeks
|
Serum creatinine
Time Frame: 4 weeks
|
4 weeks
|
Time course of changes in blood lipids
Time Frame: 4 weeks
|
4 weeks
|
Macronutrient composition of diet
Time Frame: 4 weeks
|
4 weeks
|
Symptoms questionnaire
Time Frame: 4 weeks
|
4 weeks
|
apolipoprotein B
Time Frame: 4 weeks
|
4 weeks
|
Serum markers of cholesterol absorption and synthesis
Time Frame: 4 weeks
|
4 weeks
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Study Director: Peter J Wood, PhD, Agriculture and Agri-Food Canada
- Study Director: Susan M Tosh, PhD, Agriculture and Agri-Food Canada
- Study Director: Alison L Gibbs, PhD, Department of Statistics, University of Toronto
Publications and helpful links
General Publications
- Wolever TM, Tosh SM, Gibbs AL, Brand-Miller J, Duncan AM, Hart V, Lamarche B, Thomson BA, Duss R, Wood PJ. Physicochemical properties of oat beta-glucan influence its ability to reduce serum LDL cholesterol in humans: a randomized clinical trial. Am J Clin Nutr. 2010 Oct;92(4):723-32. doi: 10.3945/ajcn.2010.29174. Epub 2010 Jul 21.
- Tosh SM, Brummer Y, Miller SS, Regand A, Defelice C, Duss R, Wolever TM, Wood PJ. Processing affects the physicochemical properties of beta-glucan in oat bran cereal. J Agric Food Chem. 2010 Jul 14;58(13):7723-30. doi: 10.1021/jf904553u.
- Wolever TM, Gibbs AL, Brand-Miller J, Duncan AM, Hart V, Lamarche B, Tosh SM, Duss R. Bioactive oat beta-glucan reduces LDL cholesterol in Caucasians and non-Caucasians. Nutr J. 2011 Nov 25;10:130. doi: 10.1186/1475-2891-10-130.
Study record dates
Study Major Dates
Study Start
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ESTIMATE)
Study Record Updates
Last Update Posted (ESTIMATE)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- GIL8034
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Hypercholesterolemia
-
National Medical Research Center for Therapy and...Moscow State University of Medicine and DentistryRecruitingMedication Adherence | Adherence, Medication | Treatment Adherence | Familial Hypercholesterolemia | Motivational Interviewing | Adherence, Patient | Treatment Adherence and Compliance | Patient Compliance | Adherence | Hypercholesterolemia, Familial | Patient Adherence | Hypercholesterolemia, Autosomal Dominant and other conditionsRussian Federation
-
Direct PlantesUnknownHYPERCHOLESTEROLEMIAFrance
-
Chong Kun Dang PharmaceuticalRecruitingPrimary HypercholesterolemiaKorea, Republic of
-
Addpharma Inc.CompletedPrimary HypercholesterolemiaKorea, Republic of
-
JW PharmaceuticalCompletedPrimary HypercholesterolemiaKorea, Republic of
-
Hanmi Pharmaceutical Company LimitedCompletedPrimary HypercholesterolemiaKorea, Republic of
-
Provident Clinical ResearchGlaxoSmithKlineUnknownPrimary HypercholesterolemiaUnited States
-
Organon and CoCompletedPrimary Hypercholesterolemia | Homozygous Familial Hypercholesterolemia
-
Merck Sharp & Dohme LLCTerminated
-
Danone JapanCompletedHealthy | Mild HypercholesterolemiaJapan
Clinical Trials on Wheat bran
-
KU LeuvenCompleted
-
University of FloridaKellogg's Corporate Citizens FundCompletedEndocrine, Nutritional, Metabolic and Immunity DisordersUnited States
-
Kellogg CompanyTufts University; University of Toronto; University of Saskatchewan; University... and other collaboratorsCompleted
-
University of AberdeenKellogg CompanyCompletedBio-availability of Wheat Bran Phytochemicals in the Human Gut | Bio-availability of Wheat Bran Phytochemicals for the Systemic CirculationUnited Kingdom
-
Purdue UniversityCompletedObesity | Diabetes Mellitus, Type 2 | Appetitive BehaviorUnited States
-
Fugeia NVCompletedHealthy Subjects | Gastrointestinal HealthBelgium
-
Maastricht University Medical CenterCompletedObesity | Change of Transit or Circulation
-
Fugeia NVCompleted
-
Agricultural University of AthensCompletedAppetitive Behavior | Potential Abnormality of Glucose ToleranceGreece
-
University of Eastern FinlandVTT Technical Research Centre of FinlandCompletedGlucose Metabolism Disorders | Inflammation | Intestinal Disorder