Efficacy of High-oleic Canola and Flaxseed Oils for Hypercholesterolemia and Cardiovascular Disease Risk Factors - Full Text View

Purpose

The purpose of this study is to assess the efficacy of high-oleic canola oil and a high-oleic canola/flaxseed oil blend as compared to a typical Western diet on plasma lipids, fatty acid profiles, and risk factors associated with cardiovascular disease in hypercholesterolemic patients. Furthermore, the metabolism of dietary oleic acid and alpha-linolenic acid contained in high-oleic canola oil and flaxseed oil will be investigated.

Condition	Intervention	Phase
Cardiovascular Disease	Dietary Supplement: High-Oleic Canola Oil Dietary Supplement: High-Oleic Canola/Flaxseed Oil Blend Dietary Supplement: Western Dietary Control	Phase 2

Study Type:	Interventional
Study Design:	Allocation: Randomized Endpoint Classification: Efficacy Study Intervention Model: Crossover Assignment Masking: Single Blind (Subject) Primary Purpose: Prevention
Official Title:	Efficacy of Consumption of High-oleic Canola and Flaxseed Oils in the Management of Hypercholesterolemia and Other Cardiovascular Risk Factors

Resource links provided by NLM:

MedlinePlus related topics: Cholesterol

Drug Information available for: Linseed oil

U.S. FDA Resources

Further study details as provided by University of Manitoba:

Primary Outcome Measures:

Serum Lipids [ Time Frame: Baseline (Day 1,2) and Endpoint (Day 28,29) of each experimental phase ] [ Designated as safety issue: No ]
Inflammatory Biomarkers: C-Reactive Protein, Interleukin-6, sE-Selectin, sVCAM-1, sICAM-1 [ Time Frame: Study Baseline (Day 1,2) and Endpoint (Day 28,29) of each experimental phase ] [ Designated as safety issue: No ]
Intima-Medial Thickness by Carotid Ultrasound [ Time Frame: Study Baseline (during Day 1-3) and Endpoint (during Day 24-26) of each experimental phase ] [ Designated as safety issue: No ]
Energy Expenditure by Indirect Calorimetry [ Time Frame: Study Baseline (during Week 1) and Endpoint (during Week 4) of each experimental phase ] [ Designated as safety issue: No ]
Body Composition by Dual Emission X-Ray Absorptiometry (DEXA) [ Time Frame: Baseline (Day1,2) and Endpoint (Day 28,29) of each experimental phase ] [ Designated as safety issue: No ]
Oxidation and Conversion of U-13C-Alpha Linolenic Acid [ Time Frame: Day 27 (time 0-8 hrs), Day 28 (24 hrs), Day 29 (48 hrs) of each experimental phase ] [ Designated as safety issue: No ]
Plasma Fatty Acid Concentrations [ Time Frame: Baseline (Day 1,2) and Endpoint (Day 28,29) of each experimental phase ] [ Designated as safety issue: No ]

Secondary Outcome Measures:

Arterial Stiffness Index by Pulse Wave Analysis [ Time Frame: Baseline (Day 1,2) and Endpoint (Day 28,29) of each experimental phase ] [ Designated as safety issue: No ]

Enrollment:	36
Study Start Date:	September 2007
Study Completion Date:	June 2008
Primary Completion Date:	June 2008 (Final data collection date for primary outcome measure)

Arms	Assigned Interventions
Experimental: High-Oleic Canola Oil	Dietary Supplement: High-Oleic Canola Oil Diets contained 35% energy as fat; of which 70% was provided by high-oleic canola oil (high in monounsaturated fat (oleic acid))
Experimental: High-Oleic Canola/Flaxseed Oil Blend	Dietary Supplement: High-Oleic Canola/Flaxseed Oil Blend Diets contained 35% energy as fat; of which 70% was provided by a 1:1 blend of high-oleic canola oil and flaxseed oil (high in monounsaturated fat (oleic acid) and omega-3 polyunsaturated fat (alpha-linolenic acid))
Active Comparator: Western Diet	Dietary Supplement: Western Dietary Control Diets contained 35% energy as fat; of which 70% was provided by a blend of oils typical to the Western diet (high in saturated fat and omega-6 polyunsaturated fat (linoleic acid))

Eligibility

Ages Eligible for Study:	18 Years to 65 Years
Genders Eligible for Study:	Both
Accepts Healthy Volunteers:	No

Criteria

Inclusion Criteria:

Fasting serum LDL-Cholesterol >3.0 mmol/L
Body mass index (BMI) between 22-36 kg/m2

Exclusion Criteria:

smoking
use of lipid lowering therapy
documented cardiovascular/atherosclerotic disease
inflammatory disease
diabetes
uncontrolled hypertension
kidney disease
other systemic diseases
cancer
chronic alcohol consumption (> 2 servings/day)
excessive exercise expenditure (> 4000 kcal/week)

Contacts and Locations

Please refer to this study by its ClinicalTrials.gov identifier: NCT00927199

Locations

Canada, Manitoba
Richardson Centre for Functional Foods and Nutraceuticals, University of Manitoba
Winnipeg, Manitoba, Canada, R3T 6C5

Sponsors and Collaborators

University of Manitoba

Canola Council of Canada

Flax Canada 2015 Inc.

Agri-Food Research and Development Initiative

Investigators

Principal Investigator:

Peter JH Jones, PhD

University of Manitoba - Richardson Centre for Functional Foods and Nutraceuticals

More Information

Additional Information:

Richardson Centre for Functional Foods and Nutraceuticals - website home page This link exits the ClinicalTrials.gov site

Publications:

Gillingham LG, Harding SV, Rideout TC, Yurkova N, Cunnane SC, Eck PK, Jones PJ. Dietary oils and FADS1-FADS2 genetic variants modulate [13C]α-linolenic acid metabolism and plasma fatty acid composition. Am J Clin Nutr. 2013 Jan;97(1):195-207. doi: 10.3945/ajcn.112.043117. Epub 2012 Dec 5.

Gillingham LG, Robinson KS, Jones PJ. Effect of high-oleic canola and flaxseed oils on energy expenditure and body composition in hypercholesterolemic subjects. Metabolism. 2012 Nov;61(11):1598-605. doi: 10.1016/j.metabol.2012.04.016. Epub 2012 Jun 12.

Gillingham LG, Gustafson JA, Han SY, Jassal DS, Jones PJ. High-oleic rapeseed (canola) and flaxseed oils modulate serum lipids and inflammatory biomarkers in hypercholesterolaemic subjects. Br J Nutr. 2011 Feb;105(3):417-27. doi: 10.1017/S0007114510003697. Epub 2010 Sep 29.

Gillingham LG, Harris-Janz S, Jones PJ. Dietary monounsaturated fatty acids are protective against metabolic syndrome and cardiovascular disease risk factors. Lipids. 2011 Mar;46(3):209-28. doi: 10.1007/s11745-010-3524-y. Epub 2011 Feb 10. Review.

Responsible Party:	Peter J.H. Jones, PhD; Principal Investigator, Richardson Centre for Functional Foods and Nutraceuticals, University of Manitoba
ClinicalTrials.gov Identifier:	NCT00927199 History of Changes
Other Study ID Numbers:	B2007:071
Study First Received:	June 17, 2009
Last Updated:	January 31, 2013
Health Authority:	Canada: Ethics Review Committee

Keywords provided by University of Manitoba:

High-Oleic Canola Oil
Flaxseed Oil
Monounsaturated Fatty Acids
Polyunsaturated Fatty Acids
Alpha Linolenic Acid

Cardiovascular
Hypercholesterolemia
Lipids
Inflammation
Metabolism

Additional relevant MeSH terms:

Cardiovascular Diseases
Hypercholesterolemia
Hyperlipidemias

Dyslipidemias
Lipid Metabolism Disorders
Metabolic Diseases

ClinicalTrials.gov processed this record on May 23, 2013