Hypercholesterolemia Clinical Trial
Official title:
Effect of a Plant Sterol-Fortified Low-fat Milk Product on Plasma Lipid Levels of Humans in Relation to Different Infant Feeding Practices and Later Life Cholesterol Metabolism
Verified date | March 2013 |
Source | University of Manitoba |
Contact | n/a |
Is FDA regulated | No |
Health authority | Canada: Ethics Review Committee |
Study type | Interventional |
The overall goal of this clinical study is to investigate how dietary cholesterol intake influences the plasma Total cholesterol (TC), LDL-Cholesterol levels and cholesterol metabolism between adults who had been breast-fed as infants as a function of the duration of breast feeding and quantity of early cholesterol intake. The study also aims to evaluate the effect of a plant sterol formulation in low fat milk shake in modulating the lipid profile favorably in the study population.
Status | Active, not recruiting |
Enrollment | 55 |
Est. completion date | June 2016 |
Est. primary completion date | September 2013 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | Both |
Age group | 18 Years to 50 Years |
Eligibility |
Inclusion Criteria: - Triglycerides (TG) <3.0 mmol/L - Body mass index (BMI) between 20 and 30 kg/m2 - Participants must have been breast-fed at least during the first 6 months of their life Exclusion Criteria: - History of recent (i.e. less than 1 month) or chronic use of oral hypolipidemic therapy, including fish oils, or probucol within the last 3 months - History of chronic use of alcohol (>2 drinks/d), smoking, systemic antibodies, corticosteroids, androgens, or phenytoin - Myocardial infarction, coronary artery bypass, kidney disease, liver disease or other major surgical procedures within the last six months, - Sitosterolemic patients - Recent onset of angina, congestive heart failure, inflammatory bowel disease, pancreatitis, diabetes, or significant current (i.e. onset within past three months) gastrointestinal, renal, pulmonary, hepatic or biliary disease, or cancer (evidence of active lesions, chemotherapy or surgery in the past year) - Exercise greater than walking or running 15 miles/wk or 4,000 kcal/wk - Participants who have not been breast-fed at all - Pregnant or planning for pregnancy during the next 5 month period |
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Crossover Assignment, Masking: Double Blind (Subject, Investigator)
Country | Name | City | State |
---|---|---|---|
Canada | Richardson Centre for Functional Foods and Nutraceuticals | Winnipeg | Manitoba |
Lead Sponsor | Collaborator |
---|---|
University of Manitoba |
Canada,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Change in LDL-cholesterol | Day 1,2 & 29,30 of each of the 3 phases. Each phase duration is 1 month | No | |
Secondary | Change in Cholesterol Absorption | On day 26 of each dietary phase,a 12-hr fasting blood sample will be obtained to represent stable isotope baseline, after which participants will ingest 75 mg of the stable carbon isotope [3,4-13C] cholesterol stable isotope (13C-cholesterol)dissolved in 5 g of margarine and spread on half of an English muffin. Fasting blood samples will be taken also on days 27, 28, and 29 to monitor isotopic enrichment/decay levels. Free cholesterol extracted from the Red Blood Cell (RBC) fraction of blood will be used to determine 13C-cholesterol enrichment using on-line gas chromatography (GC)/combustion/isotope ratio mass spectrometry (IRMS)using previously established methods. Carbon-di-oxide (CO2) gas will be analyzed for 13C cholesterol enrichment against the Pee Dee Belemnite (PDB). From 24 to 96 hr, cholesterol absorption will be presented as area under the 13C cholesterol RBC enrichment curve calculated by the Number cruncher statistical system (NCSS) statistical software. | Day 26-30 of each of the 3 phases. Each phase duration is 1 month | No |
Secondary | Change in Cholesterol Synthesis | On day 29 prior to breakfast, participants will consume 0.7 g/kg estimated body water (estimated at 60% of total body weight) of deuterium oxide (2H) as a tracer to measure cholesterol synthesis. Fasting blood sample will be collected after 24 hr (96 h after initial isotope administration) in order to monitor the change in deuterium enrichment within red blood cell (RBC) free cholesterol as an index of cholesterol synthesis.Free cholesterol will be extracted from RBC and water from plasma will be isolated using the blood samples collected from day 26-30 each phase. Cholesterol deuterium enrichment will be determined through being expressed relative to a series of standards using a GC/pyrolysis/IRMS using previously established methods. Cholesterol fractional synthesis rate (FSR) (% per day)will be calculated as the rate of incorporation of deuterium within the body water pool into RBC cholesterol pools by measuring the deuterium RBC enrichment over 24 hr. | Day 26-30 of each of the 3 phases. Each phase duration is 1 month | No |
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