The Influence of Daily Intake of Whole Grain Barley or Oats on Biomarkers of Cardiovascular Disease
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Forventet)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
-
-
Maryland
-
Beltsville, Maryland, Forenede Stater, 20705
- USDA Beltsville Human Nutrition Research Center
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
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
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Forebyggelse
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Tredobbelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Eksperimentel: Whole Grain Barley Diet
A controlled diet containing at least 4 daily servings of whole grain barley.
|
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.
|
|
Aktiv komparator: Whole Grain Oats Diet
A diet containing at least 4 servings of whole grain oats.
|
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.
|
|
Andet: Low Whole Grain Diet
A control diet containing 0.7 daily servings of whole grain.
|
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.
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Meal Tolerance Assessment
Tidsramme: 7 hours
|
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.
|
7 hours
|
|
Biomarkers of cardiovascular risk
Tidsramme: After a 12 hour fast
|
Fibrinogen, factor VII, blood pressure, total cholesterol, HDL-cholesterol, LDL-cholesterol, triglycerides, Lp(a), and lipoprotein size.
|
After a 12 hour fast
|
|
Biomarkers of oxidative stress
Tidsramme: After 6 weeks of feeding
|
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.
|
After 6 weeks of feeding
|
|
Biomarkers of inflammation
Tidsramme: After 6 weeks of controlled feeding
|
C-reactive protein (CRP), IL-6, IL-8, IL-10, IL-18, TNFα, matrix metalloproteinases (MMP-2, MMP-9), e-Selectin, ICAM, VCAM
|
After 6 weeks of controlled feeding
|
|
Biomarkers of glucoregulatory control
Tidsramme: After 6 weeks of feeding
|
Glycated apolipoprotein B, hemoglobin A1c, fructosamine, insulin, glucose, leptin, adiponectin
|
After 6 weeks of feeding
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Genotype testing
Tidsramme: After 6 weeks of controlled feeding
|
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.
|
After 6 weeks of controlled feeding
|
|
Microarray and targeted gene expression testing
Tidsramme: After 6 weeks of controlled feeding
|
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.
|
After 6 weeks of controlled feeding
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Samarbejdspartnere
Samarbejdspartnere
Efterforskere
Efterforskere
- Ledende efterforsker: Janet A Novotny, PhD, USDA Beltsville Human Nutrition Research Center
Publikationer og nyttige links
Hjælpsomme links
Datoer for undersøgelser
Studer store datoer
Studiestart
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- HS34
Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .