Recruitment

Recruitment Status
Completed

Exclusion Criteria

Abnormal fasting plasma glucose levels >120 mg/dL
LDL-cholesterol <100 mg/dL
No Social Security number
...
Abnormal fasting plasma glucose levels >120 mg/dL
LDL-cholesterol <100 mg/dL
No Social Security number
Blood donation within the past 8 weeks
Gastrointestinal disease
Unwillingness to maintain body weight during participation in the study
Hormone therapy medications containing estrogen
BMI < 20 and > 35 kg/m2
Supplements containing fatty acids (Fish Oil, Flaxseed, etc.) and any other compounds that affect lipid metabolism (red yeast rice, etc.) in the last 3 months prior to participation in the study
Age < 50 and > 85 years
Nicotinic Acid Agents (Niacin, Niacor, Slo-Niacin, etc)
Women who have a history of difficulty with blood draws
Hypothyroidism or hyperthyroidism, as defined as screening TSH outside of normal ranges (<0.4 or >4.5), unless controlled with medication for at least 6 months
Fibrates (Gemfibrozil, Clofibrate, Ciprofibrate, Fenofibrate [Tricor], etc)
Anemia, as defined by screening haemoglobin <11.7g/dL.
Alcohol intake > 7 drinks per week or unwillingness to abstain from consuming alcohol while participating in the study
Men
Type I and II diabetes
Probucol
Uncontrolled hypertension or high BP reading at the discretion of the study physician or nurse
CRP > 10 ug/dL
HMG-CoA reductase inhibitors (statins)
Any non-steroidal anti-inflammatory drugs (NSAID) or antihistamine use by subject for 72 hours prior to blood draws
Anabolic steroids and hydrocortisone
Diphenylhydantoin
Cholesterol Absorption Inhibitors (Ezetimibe [Zetia])
Established cardiovascular disease as defined by history of myocardial infarction, stroke, heart failure, coronary artery bypass graft, stenosis >50%, angina and peripheral arterial disease)
Anticoagulants (Coumadin, Heparin, Plavix, etc)
Unwillingness to adhere to diet and study protocol
Non-English speaking subjects
Acetylsalicylic acid containing medications, aspirin
Renal or kidney disease, as defined by a history of chronic kidney disease or by glomerular filtration rate of < 60 ml.min/1.73 m2 calculated from screening blood tests.
Weight gain or loss of more than 15 lb within 6 months prior to enrollment
Smoking or use of nicotine-containing products within the past 2 years
Liver disease, as defined by a history of chronic hepatitis B or C, cholestatic or cirrhotic liver disease, nonalcoholic fatty liver disease, elevations of SGPT or SGOT greater than 1.5 times the upper limit of normal at screening, bilirubin greater than 2 mg/dL (in the absence of benign causes of elevated bilirubin such as Gilbert's syndrome) at screening, or albumin below the lower limit of normal.
Vegetarians and those with food allergies or aversions
Bile Acid Sequestrants (Cholestyramine, Colestipol, Colesevelam, etc.)
Women who have had a double mastectomy

Summary

Conditions
Dyslipidemia
Type
Interventional
Design
  • Allocation: Randomized
  • Intervention Model: Crossover Assignment
  • Masking: Double (Participant, Investigator)
  • Primary Purpose: Treatment

Participation Requirements

Age
Between 50 years and 85 years
Gender
Only females

Description

Vegetable oils high in the specific fatty acids of interest - stearic (found in cocoa butter, meats), palmitic (found in meats, dairy and some plant oils) and stearic acid's metabolic product, oleic (found in olive and corn oil) - will be used to displace each other in a standardized diet and fed to...

Vegetable oils high in the specific fatty acids of interest - stearic (found in cocoa butter, meats), palmitic (found in meats, dairy and some plant oils) and stearic acid's metabolic product, oleic (found in olive and corn oil) - will be used to displace each other in a standardized diet and fed to mildly hypercholesterolemic postmenopausal women using a randomized-controlled crossover design. A critical issue remains unresolved - the relative comparability among . The findings from this research study will enable us to understand the mechanism and potential health effect of different types of fats. Each of the diet phases will be 5 weeks in length with a 2-4 week break between phases. All food and drink will be provided to study volunteers. Blood pressure and body weight will be monitored once per week and adjustments made, if necessary, to maintain a stable weight. During the 5th week of each diet phase, volunteers will come to the center on 3 consecutive days to provide fasting blood samples and a non-fasting blood sample.

Exclusion Criteria

Abnormal fasting plasma glucose levels >120 mg/dL
LDL-cholesterol <100 mg/dL
No Social Security number
...
Abnormal fasting plasma glucose levels >120 mg/dL
LDL-cholesterol <100 mg/dL
No Social Security number
Blood donation within the past 8 weeks
Gastrointestinal disease
Unwillingness to maintain body weight during participation in the study
Hormone therapy medications containing estrogen
BMI < 20 and > 35 kg/m2
Supplements containing fatty acids (Fish Oil, Flaxseed, etc.) and any other compounds that affect lipid metabolism (red yeast rice, etc.) in the last 3 months prior to participation in the study
Age < 50 and > 85 years
Nicotinic Acid Agents (Niacin, Niacor, Slo-Niacin, etc)
Women who have a history of difficulty with blood draws
Hypothyroidism or hyperthyroidism, as defined as screening TSH outside of normal ranges (<0.4 or >4.5), unless controlled with medication for at least 6 months
Fibrates (Gemfibrozil, Clofibrate, Ciprofibrate, Fenofibrate [Tricor], etc)
Anemia, as defined by screening haemoglobin <11.7g/dL.
Alcohol intake > 7 drinks per week or unwillingness to abstain from consuming alcohol while participating in the study
Men
Type I and II diabetes
Probucol
Uncontrolled hypertension or high BP reading at the discretion of the study physician or nurse
CRP > 10 ug/dL
HMG-CoA reductase inhibitors (statins)
Any non-steroidal anti-inflammatory drugs (NSAID) or antihistamine use by subject for 72 hours prior to blood draws
Anabolic steroids and hydrocortisone
Diphenylhydantoin
Cholesterol Absorption Inhibitors (Ezetimibe [Zetia])
Established cardiovascular disease as defined by history of myocardial infarction, stroke, heart failure, coronary artery bypass graft, stenosis >50%, angina and peripheral arterial disease)
Anticoagulants (Coumadin, Heparin, Plavix, etc)
Unwillingness to adhere to diet and study protocol
Non-English speaking subjects
Acetylsalicylic acid containing medications, aspirin
Renal or kidney disease, as defined by a history of chronic kidney disease or by glomerular filtration rate of < 60 ml.min/1.73 m2 calculated from screening blood tests.
Weight gain or loss of more than 15 lb within 6 months prior to enrollment
Smoking or use of nicotine-containing products within the past 2 years
Liver disease, as defined by a history of chronic hepatitis B or C, cholestatic or cirrhotic liver disease, nonalcoholic fatty liver disease, elevations of SGPT or SGOT greater than 1.5 times the upper limit of normal at screening, bilirubin greater than 2 mg/dL (in the absence of benign causes of elevated bilirubin such as Gilbert's syndrome) at screening, or albumin below the lower limit of normal.
Vegetarians and those with food allergies or aversions
Bile Acid Sequestrants (Cholestyramine, Colestipol, Colesevelam, etc.)
Women who have had a double mastectomy

Tracking Information

NCT #
NCT02145936
Collaborators
Not Provided
Investigators
  • Principal Investigator: Alice H Lichtenstein, D.Sc. Tufts University/HNRCA
  • Alice H Lichtenstein, D.Sc. Tufts University/HNRCA