The Influence of Daily Intake of Whole Grain Barley or Oats on Biomarkers of Cardiovascular Disease
Studie Overzicht
Toestand
Toestand
Conditie
Conditie
Interventie / Behandeling
Interventie / Behandeling
Studietype
Studietype
Inschrijving (Verwacht)
Inschrijving
Fase
Fase
- Niet toepasbaar
Contacten en locaties
Studie Locaties
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Maryland
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Beltsville, Maryland, Verenigde Staten, 20705
- USDA Beltsville Human Nutrition Research Center
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Deelname Criteria
Geschiktheidscriteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
- Men and women between the ages of 25-70 years
- Body mass index (BMI) ≥ 19 and ≤ 38
- Willingness and ability to make scheduled appointments at clinical site as required by study protocol
Exclusion Criteria:
- Do not regularly consume breakfast or dislike cereal for breakfast
- Known (self-reported) allergy or adverse reaction to grains (e.g., wheat, gluten, barley)
- Presence of kidney disease, liver disease, gout, untreated or unstable hypothyroidism, untreated or unstable hyperthyroidism, certain cancers, gastrointestinal disease, pancreatic disease, other metabolic diseases, or malabsorption syndromes
- Type 2 diabetes requiring the use of oral antidiabetic agents or insulin
- Fasting triglycerides > 300 mg/dL
- Fasting glucose > 126 mg/dL
- Use of cholesterol lowering medication
- Blood pressure > 180/100 or hypertension treated with calcium channel blockers, direct acting vasodilators, or beta blockers
- History of bariatric or certain other surgeries related to weight control
- History of major surgery within 3 months of enrollment
- Smokers or other tobacco users (during 6 months prior to the start of the study)
- Antibiotic use during the intervention or for 3 months prior to the intervention period
- History of eating disorders or other dietary patterns which are not consistent with the dietary intervention (e.g., vegetarians, very low fat diets, high protein diets)
- Volunteers who have lost 10% of body weight within the last 6 months
- Unable or unwilling to give informed consent or communicate with study staff
- Self-report of alcohol or substance abuse within the past 12 months and/or current acute treatment or rehabilitation program for these problems (long-term participation in Alcoholics Anonymous is not an exclusion)
- Other medical, psychiatric, or behavioral factors that in the judgment of the Principal Investigator may interfere with study participation or the ability to follow the intervention protocol
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Preventie
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Verdrievoudigen
Aantal wapens
Wapens en interventies
Deelnemersgroep / ArmDeelnemersgroep / Arm |
Interventie / BehandelingInterventie / Behandeling |
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Experimenteel: Whole Grain Barley Diet
A controlled diet containing at least 4 daily servings of whole grain barley.
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Subjects will be randomly assigned to one of three treatments: 1) a control diet containing 0.7 daily servings of whole grain, 2) a diet containing at least 4 daily servings of whole grain barley or 3) a diet containing at least 4 servings of whole grain oats.
After 6 weeks, risk factors of cardiovascular disease will be assessed after a 12 hr fast.
During the seventh week, risk factors of cardiovascular disease will be assessed in the postprandial state.
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Actieve vergelijker: Whole Grain Oats Diet
A diet containing at least 4 servings of whole grain oats.
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Subjects will be randomly assigned to one of three treatments: 1) a control diet containing 0.7 daily servings of whole grain, 2) a diet containing at least 4 daily servings of whole grain barley or 3) a diet containing at least 4 servings of whole grain oats.
After 6 weeks, risk factors of cardiovascular disease will be assessed after a 12 hr fast.
During the seventh week, risk factors of cardiovascular disease will be assessed in the postprandial state.
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Ander: Low Whole Grain Diet
A control diet containing 0.7 daily servings of whole grain.
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Subjects will be randomly assigned to one of three treatments: 1) a control diet containing 0.7 daily servings of whole grain, 2) a diet containing at least 4 daily servings of whole grain barley or 3) a diet containing at least 4 servings of whole grain oats.
After 6 weeks, risk factors of cardiovascular disease will be assessed after a 12 hr fast.
During the seventh week, risk factors of cardiovascular disease will be assessed in the postprandial state.
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Wat meet het onderzoek?
Primaire uitkomstmaten
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Meal Tolerance Assessment
Tijdsspanne: 7 hours
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Subjects will provide a baseline blood sample at 15 minutes and 5 minutes prior to consuming a test meal.
Subjects will then consume a high fat breakfast of foods such as eggs, buttered English muffins, and donuts.
Blood samples will be collected 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 360, and 420 min following ingestion of the test meal.
Measurements will be made for serum triglyceride area under the curve, serum cholesterol, insulin, glucose, and plasma apo B48.
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7 hours
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Biomarkers of cardiovascular risk
Tijdsspanne: After a 12 hour fast
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Fibrinogen, factor VII, blood pressure, total cholesterol, HDL-cholesterol, LDL-cholesterol, triglycerides, Lp(a), and lipoprotein size.
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After a 12 hour fast
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Biomarkers of oxidative stress
Tijdsspanne: After 6 weeks of feeding
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Nitrites and nitrates, malondialdehyde, lipid hydroperoxides, ox-LDL, resistance of LDL to Cu2+-induced oxidation, FRAP, glutathione, glutathione-S-transferase, super oxide dismutase, PON-1, betaine, homocysteine, total thiols, urinary isoprostanes.
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After 6 weeks of feeding
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Biomarkers of inflammation
Tijdsspanne: After 6 weeks of controlled feeding
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C-reactive protein (CRP), IL-6, IL-8, IL-10, IL-18, TNFα, matrix metalloproteinases (MMP-2, MMP-9), e-Selectin, ICAM, VCAM
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After 6 weeks of controlled feeding
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Biomarkers of glucoregulatory control
Tijdsspanne: After 6 weeks of feeding
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Glycated apolipoprotein B, hemoglobin A1c, fructosamine, insulin, glucose, leptin, adiponectin
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After 6 weeks of feeding
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Secundaire uitkomstmaten
Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
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Genotype testing
Tijdsspanne: After 6 weeks of controlled feeding
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Blood will be used to test for genetic traits that may influence nutrient metabolism and also traits reflecting the mechanisms that may be influenced by the intervention.
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After 6 weeks of controlled feeding
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Microarray and targeted gene expression testing
Tijdsspanne: After 6 weeks of controlled feeding
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Blood samples will be used to test how the intervention affects gene expression.
Global gene expression will be performed for a complete survey of the RNA response to the intervention.
Targeted gene expression will be performed to confirm the findings of the global gene expression analysis.
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After 6 weeks of controlled feeding
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Medewerkers en onderzoekers
Sponsor
Sponsor
Medewerkers
Medewerkers
Onderzoekers
Onderzoekers
- Hoofdonderzoeker: Janet A Novotny, PhD, USDA Beltsville Human Nutrition Research Center
Publicaties en nuttige links
Studie record data
Bestudeer belangrijke data
Studie start
Studie start
Primaire voltooiing (Werkelijk)
Primaire voltooiing
Studie voltooiing (Werkelijk)
Studie voltooiing
Studieregistratiedata
Eerst ingediend
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Eerst geplaatst
Updates van studierecords
Laatste update geplaatst (Schatting)
Laatste update geplaatst
Laatste update ingediend die voldeed aan QC-criteria
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
Andere studie-ID-nummers
- HS34
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