HealthyNCT01418196
Relation of Diet to Heart Disease Risk Factors in Children
An observational study of Healthy and Cardiovascular Disease, run by UCSF Benioff Children's Hospital Oakland at 1 site in United States.
Trial summary
Metabolites of dietary phosphatidylcholine- choline and trimethylamine N-oxide (TMAO)- were recently identified as being associated with myocardial infarction in a case-control study. Read more about this study
- Who is it for?
- Ages 7 years and olderHealthy volunteers can take part
- Conditions the study is for
- Healthy, Cardiovascular Disease
- How many people
- 92 participants
- Where
- 1 siteUnited States
- Study dates
- Sep 2011to Jul 2013
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 7 years and older
- All sexes
- Healthy volunteers accepted
- Child, Adult, Older adult
Study population: 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.
Who may be able to join
- Children >7 years of age and their parents
Who cannot join
- Antibiotics
- Pregnant or breastfeeding women
Trial locations and contacts
1 site in 1 country.
United States1 site
Children's Hospital & Research Center Oakland
Oakland, California, 94609
About this study
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.
Read the detailed description
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.
- Conditions
- Healthy, Cardiovascular Disease
- Keywords
- TMAO, Children, Dietary choline, Cardiovascular disease risk, Atherogenic dyslipidemia
- Medical subject headings
- Cardiovascular Diseases
What is being measured
The primary outcome is the main question the study is designed to answer.
Trimethylamine N-oxide (TMAO)
Measured: 1 time
Secondary outcomes (4)
Choline
Measured: 1 time
LDL subfractions
Measured: 1 time
HDL cholesterol
Measured: 1 time
Triglycerides
Measured: 1 time
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted17 Aug 2011 (estimated)
- Study startSep 2011
- Primary completionApr 2012
- Study completionJul 2013
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for HealthyStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Family based
- Time perspective
- Cross-sectional
- Enrolment
- 92 participants (actual)
Sponsor and investigators
- Lead sponsor
- UCSF Benioff Children's Hospital Oakland
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Ronald M Krauss, MD, Principal investigator, UCSF Benioff Children's Hospital Oakland
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01418196
- Sponsor's protocol ID
- MM-3462
- Status last verified
- Mar 2015
- First submitted
- 15 Aug 2011
- Last updated
- 26 Mar 2015
- Results posted
- No
- Data monitoring committee
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 26 Mar 2015. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Relation of Diet to Heart Disease Risk Factors in Children
- ClinicalTrials.gov ID
- NCT01418196
- Acronym / sponsor ID
- MM-3462
- Conditions
- Healthy, Cardiovascular Disease
- Keywords
- TMAO, Children, Dietary choline, Cardiovascular disease risk, Atherogenic dyslipidemia
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 92 participants (actual)
- Lead sponsor
- UCSF Benioff Children's Hospital OaklandUniversity, hospital or other
- Study start
- Sep 2011
- Primary completion
- Apr 2012 (actual)
- Study completion
- Jul 2013 (actual)
- First posted
- 17 Aug 2011 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Detailed description
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.
Study design
- Observational model
- Family based
- Time perspective
- Cross-sectional
Who may qualify
- Ages
- 7 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult, Older adult
- Study population
- 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.
Key inclusion criteria (1 listed)
- Children >7 years of age and their parents
Key exclusion criteria (2 listed)
- Antibiotics
- Pregnant or breastfeeding women
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Trimethylamine N-oxide (TMAO)
Time frame: 1 time
4 secondary outcomes
Choline
Time frame: 1 time
LDL subfractions
Time frame: 1 time
HDL cholesterol
Time frame: 1 time
Triglycerides
Time frame: 1 time
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 26 Mar 2015.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Ronald M Krauss, MD principal investigator
UCSF Benioff Children's Hospital Oakland
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Healthy and Cardiovascular Disease, run by UCSF Benioff Children's Hospital Oakland at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 26 Mar 2015. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Trimethylamine N-oxide (TMAO) (time frame: 1 time). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Mar 2015.