Relation of Diet to Heart Disease Risk Factors in Children
25. marts 2015 opdateret af: UCSF Benioff Children's Hospital Oakland
Metabolites of dietary phosphatidylcholine- choline and trimethylamine N-oxide (TMAO)- were recently identified as being associated with myocardial infarction in a case-control study.
The latter TMAO is a gut-microflora-derived choline metabolite that has been shown to be a potent risk factor for cardiovascular disease (CVD).
This pilot study seeks to use information derived from a dietary questionnaire in children to test the association of dietary choline intake to plasma levels of TMAO as well as the relationship between plasma choline levels and components of atherogenic dyslipidemia (increased triglycerides and small LDL, and reduced HDL cholesterol).
An ancillary goal of this study is to build on existing programs of community outreach to local Oakland/Berkeley minority communities, and to develop an infrastructure for family-based and community participation in clinical research across the full age spectrum and among diverse populations.
This pilot study will examine the association of dietary choline intake assessed by food frequency questionnaires to biomarkers of CVD risk in 40 children (> 7 years of age) and their parents as there is no information regarding this relationship in children.
The results of this pilot study will form the basis for a proposal to carry out a randomized intervention trial to directly test the effects of dietary choline intake on plasma TMAO and lipoprotein levels.
Ultimately, better understanding of the relationship between dietary choline intake and CVD risk factors may facilitate the formulation of appropriate dietary choline recommendations in children and adults.
Studieoversigt
Status
Afsluttet
Betingelser
Detaljeret beskrivelse
From interested participants (children and parents) we will obtain:
- Informed consent
- Anthropometric measurements - height, weight, waist and hip circumference, blood pressure, % body fat by bioimpedance (Tanita scale).
- Health History Questionnaire
- Food Frequency Questionnaire
- Fasting blood sample- We will collect a total of 40 ml of blood (less than 3 ml/kg for the entire study). The blood samples will be used to measure triglyceride, LDL-cholesterol, HDL-cholesterol, glucose, insulin, apoA1, apoB, C-reactive protein, lipoprotein subfraction analysis by ion mobility, DNA for inclusion in our DNA biobank, choline, TMAO and other metabolites related to heart disease risk.
Standard Blood sampling: Using standard blood collection procedures, blood samples will be collected from participants after a 12-14 hour fast. The blood will be collected in tubes containing the following preservative solution: 3.0 gms EDTA (dipotassium), 1.7 mg P-Pack, 0.15 gms gentamycin sulfate, 0.15 gms chloramphenicol, 5.96 mls aprotinin (Sigma A-6279), and 0.30 gms sodium azide all of which are diluted to 20mls with doubly deionized water. Plasma is separated by immediate centrifugation at 4°C. Lipid and lipoprotein measurements are performed and aliquots of plasma are frozen for future analyses.
Undersøgelsestype
Observationel
Tilmelding (Faktiske)
92
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
-
-
California
-
Oakland, California, Forenede Stater, 94609
- Children's Hospital & Research Center Oakland
-
-
Deltagelseskriterier
Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.
Berettigelseskriterier
Aldre berettiget til at studere
7 år og ældre (Barn, Voksen, Ældre voksen)
Tager imod sunde frivillige
Ja
Køn, der er berettiget til at studere
Alle
Prøveudtagningsmetode
Sandsynlighedsprøve
Studiebefolkning
The study population will consist of children (>7 years of age) and their parents who are generally healthy.
Parents are not required to participant in the study.
We will include all ethnicities.
Beskrivelse
Inclusion Criteria:
- Children >7 years of age and their parents
Exclusion Criteria:
- Antibiotics
- Pregnant or breastfeeding women
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
Trimethylamine N-oxide (TMAO)
Tidsramme: 1 time
|
1 time
|
Sekundære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
Choline
Tidsramme: 1 time
|
1 time
|
|
LDL subfractions
Tidsramme: 1 time
|
1 time
|
|
HDL cholesterol
Tidsramme: 1 time
|
1 time
|
|
Triglycerides
Tidsramme: 1 time
|
1 time
|
Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Datoer for undersøgelser
Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.
Studer store datoer
Studiestart
1. september 2011
Primær færdiggørelse (Faktiske)
1. april 2012
Studieafslutning (Faktiske)
1. juli 2013
Datoer for studieregistrering
Først indsendt
15. august 2011
Først indsendt, der opfyldte QC-kriterier
15. august 2011
Først opslået (Skøn)
17. august 2011
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
26. marts 2015
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
25. marts 2015
Sidst verificeret
1. marts 2015
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- MM-3462
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 .