Dietary Omega-7 Palmitoleic Acid-Rich Oil on Lipoprotein Metabolism and Satiety in Adults
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ClinicalTrials.gov Identifier: NCT03372733 |
Recruitment Status :
Recruiting
First Posted : December 14, 2017
Last Update Posted : April 30, 2024
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Tracking Information | |||||
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First Submitted Date ICMJE | December 13, 2017 | ||||
First Posted Date ICMJE | December 14, 2017 | ||||
Last Update Posted Date | April 30, 2024 | ||||
Actual Study Start Date ICMJE | July 31, 2018 | ||||
Estimated Primary Completion Date | July 31, 2024 (Final data collection date for primary outcome measure) | ||||
Current Primary Outcome Measures ICMJE |
changes in the LDL-cholesterol levels [ Time Frame: 24 weeks ] The primary outcome measures of this study will be changes in the LDL-cholesterol levels. Secondary outcome measurements will be changes in TC, TG, HDL-C, and other lipids, lipoprotein particle number, HDL functional test (i.e. efflux study) composition and size, changes in appetite and/or satiety. Each subject will serve as their own control.
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Original Primary Outcome Measures ICMJE |
changes in the LDL-cholesterol levels [ Time Frame: 24 weeks ] | ||||
Change History | |||||
Current Secondary Outcome Measures ICMJE |
changes in TC, TG, HDL-C, and other lipids, lipoprotein particle number, HDL functional test (i.e. efflux study) composition and size, changes in appetite and/or satiety [ Time Frame: 24 weeks ] | ||||
Original Secondary Outcome Measures ICMJE |
changes in TC, TG, HDL-C, and other lipids, lipoprotein particle number, HDL functional test (i.e. efflux study) composition and size,changes in apetite and/or satiety [ Time Frame: 24 weeks ] | ||||
Current Other Pre-specified Outcome Measures | Not Provided | ||||
Original Other Pre-specified Outcome Measures | Not Provided | ||||
Descriptive Information | |||||
Brief Title ICMJE | Dietary Omega-7 Palmitoleic Acid-Rich Oil on Lipoprotein Metabolism and Satiety in Adults | ||||
Official Title ICMJE | Effect of Dietary Omega-7 Palmitoleic Acid-Rich Oil on Lipoprotein Metabolism and Satiety in Adults | ||||
Brief Summary | Background: Omega-7 fatty acids are found in the oil extracted from certain fish and nuts like macadamia. Palmitoleic acid is one of the most common omega-7 fatty acids. Many studies suggest that this oil is good for heart health. Researchers want to find out more about these potential benefits. Objective: To study how oil enriched with palmitoleic acid (Omega-7 oil) affects metabolism. Eligibility: Healthy adults at least 18 years old with no known history of cardiovascular disease. Subjects not allergic to fish oil and fish products Females that are not pregnant and are not planning a pregnancy during the length of the study Design: Participants will be screened with questions about their health, medical history, and medicines they take. Participants will have 4 visits over 24 weeks. The visits may include:
Participants will keep a food and exercise journal Compensation will be provided to subjects that complete the study Check your eligibility for this study by clicking here: https://www.surveymonkey.com/r/DietaryOmega |
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Detailed Description | Serum cholesterol is transported by lipoproteins, such as VLDL, LDL, and HDL, which vary in their relationship to cardiovascular disease risk. LDL, for example, is proatherogenic, whereas HDL is cardio-protective. Palmitoleic acid (cis-C16:1 n-7), an omega-7 fatty acid with 16 carbons in length with a single double bound in the n-7 position, have been shown in mice and human to decrease proatherogenic lipoproteins, such as LDL, and reduce cardiovascular risk factors. This study will test the hypothesis that palmitoleate supplementation in humans will favorably alter the lipoprotein lipid profile in regard to cardiovascular disease risk. We will also assess other parameters related to lipoprotein composition and function, as well as other biomarkers related to coagulation and inflammation, which have previously been shown to be possibly affected by supplementation with omega-7 fatty acid. In addition, previous animal studies have indicated the palmitoleate induced satiety and suppressed bodyweight gain, possibly through enhancement of the release of satiety hormones. In this clinical trial, we, therefore will also examine the effect of concentrated palmitoleate on satiety. This clinical research project is designed as a pilot, randomized, double-blinded, crossover study that will investigate the effect of concentrated oil enriched with palmitoleate on lipoprotein metabolism and satiety. Subjects will either receive control olive oil enriched in oleic acid, a longer-chain monounsaturated fatty acid (cis-C18:1 n-9), or a concentrate oil supplement produced from pollock fish (rich in palmitoleate) for approximately 8-10 weeks, with a wash out period of 8-10 weeks between the two arms of the study. The study consists of 4 outpatient visits when laboratory or research samples will be performed. A 7-day food diary, pill count, and red cell membrane fatty acid levels will be monitored to assess compliance. The effect of the supplement on satiety will be assessed at each visit. |
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Study Type ICMJE | Interventional | ||||
Study Phase ICMJE | Phase 2 | ||||
Study Design ICMJE | Allocation: Randomized Intervention Model: Crossover Assignment Masking: Double (Participant, Investigator) Primary Purpose: Basic Science |
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Condition ICMJE | Cardiovascular Disease | ||||
Intervention ICMJE |
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Study Arms ICMJE |
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Publications * | Not Provided | ||||
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline. |
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Recruitment Information | |||||
Recruitment Status ICMJE | Recruiting | ||||
Estimated Enrollment ICMJE |
110 | ||||
Original Estimated Enrollment ICMJE |
70 | ||||
Estimated Study Completion Date ICMJE | July 31, 2024 | ||||
Estimated Primary Completion Date | July 31, 2024 (Final data collection date for primary outcome measure) | ||||
Eligibility Criteria ICMJE |
EXCLUSION CRITERIA:
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Sex/Gender ICMJE |
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Ages ICMJE | 18 Years to 99 Years (Adult, Older Adult) | ||||
Accepts Healthy Volunteers ICMJE | Yes | ||||
Contacts ICMJE |
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Listed Location Countries ICMJE | United States | ||||
Removed Location Countries | |||||
Administrative Information | |||||
NCT Number ICMJE | NCT03372733 | ||||
Other Study ID Numbers ICMJE | 180019 18-H-0019 |
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Has Data Monitoring Committee | Not Provided | ||||
U.S. FDA-regulated Product |
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IPD Sharing Statement ICMJE |
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Current Responsible Party | National Institutes of Health Clinical Center (CC) ( National Heart, Lung, and Blood Institute (NHLBI) ) | ||||
Original Responsible Party | Same as current | ||||
Current Study Sponsor ICMJE | National Heart, Lung, and Blood Institute (NHLBI) | ||||
Original Study Sponsor ICMJE | Same as current | ||||
Collaborators ICMJE | Not Provided | ||||
Investigators ICMJE |
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PRS Account | National Institutes of Health Clinical Center (CC) | ||||
Verification Date | April 18, 2024 | ||||
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP |