AtherosclerosisNCT00005397
Epidemiology of Carotid Artery Atherosclerosis in Youth
An observational study of Atherosclerosis and Cardiovascular Diseases, run by Patricia H Davis.
Trial summary
To examine the relationship of risk factors measured in childhood to intimal medial thickness (IMT) in early adulthood and to examine familial factors which may be related to increased IMT, a measure of atherosclerosis. Read more about this study
- Who is it for?
- Ages 11 to 50 years
- Conditions the study is for
- Atherosclerosis, Cardiovascular Diseases, Heart Diseases
- How many people
- 1,360 participants
- Where
- No sites listed yet
- Study dates
- Sep 1995to Dec 2008
- 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 11 to 50 years
- All sexes
- No healthy volunteers
- Child, Adult
Study population: 346 men and 379 women (members of original Muscatine cohort 635 members of the Muscatine Offspring cohort
Representative of the original Muscatine childhood cohort with at least one measurement in childhood and one in young adulthood.
Members of the Muscatine Offspring Cohort
About this study
To examine the relationship of risk factors measured in childhood to intimal medial thickness (IMT) in early adulthood and to examine familial factors which may be related to increased IMT, a measure of atherosclerosis.
Read the detailed description
BACKGROUND:
The atherosclerotic process begins in childhood and advances through adult life when occlusive vascular disease results in coronary heart disease, stroke and peripheral vascular disease. Although risk factors have been established in adult populations, risk factors when measured in childhood have not been directly related to morbidity and mortality from occlusive atherosclerotic disease. The ultrasonographic measurement of carotid artery intimal-medial thickness (IMT) in adults is related not only to the risk for stroke but also to the severity of atherosclerotic disease in the coronary arteries. In 1970, a population of school age children and adolescents was first examined in Muscatine, Iowa, and since then has been followed to examine the predictive value of childhood risk factor levels for cardiovascular disease. See also Study 906 (Muscatine Heart Study).
The study will provide a view of the significance of IMT in young adults not only in its relationship to risk factors in childhood and young adulthood but also to familial factors that may be responsible for accelerated atherosclerosis.
DESIGN NARRATIVE:
Beginning in 1995, the longitudinal study examined the following: 1) the relationship of body mass index (BMI), blood pressure, total cholesterol, and smoking behaviors measured in childhood to IMT measured in early adulthood; 2) the relationship of risk factors (BMI, blood pressure, total cholesterol, LDL-C, HDL-C, Apo A1, Apo B, Lp(a), Apo E genotypes, glucose insulin and smoking) to IMT in young adults; 3) the relationship of risk factor 'load' from childhood to adult life to IMT; 4) the relationship of IMT in young adults to familial mortality in first- and second-degree relatives due to vascular disease; and 5) the degree of familial aggregation of IMT in young adults and their parents.
The study was renewed in FY 2000 to investigate the third generation of the Muscatine Heart Study cohort. The renewal determined whether the offspring of cohort members with premature atherosclerosis or a familial history of cardiovascular disease had increased carotid intimal-medial thickness (IMT) or elevated risk factors, identify risk factors for progression of carotid IMT, and measure putative riskfactors for increased IMT (serologic evidence of Chlamydia pneumoniae or cytomegalovirus infection, high sensitivity C-reactive protein, fibrinogen, plasminogen activator inhibitor-1 and glycosylated hemoglobin).
The study was extended through June 2008 to measure intimal-medial thickness in a vascular bed affected earlier by atherosclerosis, the distal abdominal aorta, as well as in the carotid artery. In 662 offspring, aged 11 to 32 years, the investigators will determine if the aortic and carotid intimal-medial thickness are related, the relationship of cardiovascular risk factors to aortic intimal-medial thickness and the progression of carotid intimal-medial thickness, and the relationship of aortic and carotid intimal-medial thickness in the offspring to subclinical or clinical disease in their parents.
- Medical subject headings
- Atherosclerosis, Cardiovascular Diseases, Heart Diseases, Carotid Artery Diseases
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted26 May 2000 (estimated)
- Study startSep 1995
- Primary completionDec 2008
- Study completionDec 2008
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (4)Papers the sponsor has linked to this study.
- Other trials for AtherosclerosisStudies 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
- Cohort
- Time perspective
- Prospective
- Enrolment
- 1,360 participants (actual)
Sponsor and investigators
- Lead sponsor
- Patricia H Davis
- Sponsor type
- University, hospital or other
- Collaborators
- National Heart, Lung, and Blood Institute (NHLBI)
- Responsible party
- Sponsor-investigator, Patricia H Davis, University of Iowa
- Investigators
- Patricia H Davis, MD, Principal investigator, University of Iowa
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00005397
- Sponsor's protocol ID
- 200501724
- Other IDs
- R01HL054730
- Status last verified
- Jun 2017
- First submitted
- 25 May 2000
- Last updated
- 12 Jun 2017
- Results posted
- No
Publications
Davis PH, Dawson JD, Mahoney LT, Lauer RM. Increased carotid intimal-medial thickness and coronary calcification are related in young and middle-aged adults. The Muscatine study. Circulation. 1999 Aug 24;100(8):838-42. doi: 10.1161/01.cir.100.8.838.
PubMed 10458720Dawson JD. Sample size calculations based on slopes and other summary statistics. Biometrics. 1998 Mar;54(1):323-30.
PubMed 9544525Davis PH, Dawson JD, Riley WA, Lauer RM. Carotid intimal-medial thickness is related to cardiovascular risk factors measured from childhood through middle age: The Muscatine Study. Circulation. 2001 Dec 4;104(23):2815-9. doi: 10.1161/hc4601.099486.
PubMed 11733400Sonka M, Liang W, Lauer RM. Automated analysis of brachial ultrasound image sequences: early detection of cardiovascular disease via surrogates of endothelial function. IEEE Trans Med Imaging. 2002 Oct;21(10):1271-9. doi: 10.1109/TMI.2002.806288.
PubMed 12585709
Study at a glance
From the registry record, last updated by the sponsor on 12 Jun 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Epidemiology of Carotid Artery Atherosclerosis in Youth
- ClinicalTrials.gov ID
- NCT00005397
- Acronym / sponsor ID
- 200501724
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 1,360 participants (actual)
- Lead sponsor
- Patricia H DavisUniversity, hospital or other
- Collaborators
- National Heart, Lung, and Blood Institute (NHLBI)
- Study start
- Sep 1995
- Primary completion
- Dec 2008 (actual)
- Study completion
- Dec 2008 (actual)
- First posted
- 26 May 2000 (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.
To examine the relationship of risk factors measured in childhood to intimal medial thickness (IMT) in early adulthood and to examine familial factors which may be related to increased IMT, a measure of atherosclerosis.
Detailed description
BACKGROUND:
The atherosclerotic process begins in childhood and advances through adult life when occlusive vascular disease results in coronary heart disease, stroke and peripheral vascular disease. Although risk factors have been established in adult populations, risk factors when measured in childhood have not been directly related to morbidity and mortality from occlusive atherosclerotic disease. The ultrasonographic measurement of carotid artery intimal-medial thickness (IMT) in adults is related not only to the risk for stroke but also to the severity of atherosclerotic disease in the coronary arteries. In 1970, a population of school age children and adolescents was first examined in Muscatine, Iowa, and since then has been followed to examine the predictive value of childhood risk factor levels for cardiovascular disease. See also Study 906 (Muscatine Heart Study).
The study will provide a view of the significance of IMT in young adults not only in its relationship to risk factors in childhood and young adulthood but also to familial factors that may be responsible for accelerated atherosclerosis.
DESIGN NARRATIVE:
Beginning in 1995, the longitudinal study examined the following: 1) the relationship of body mass index (BMI), blood pressure, total cholesterol, and smoking behaviors measured in childhood to IMT measured in early adulthood; 2) the relationship of risk factors (BMI, blood pressure, total cholesterol, LDL-C, HDL-C, Apo A1, Apo B, Lp(a), Apo E genotypes, glucose insulin and smoking) to IMT in young adults; 3) the relationship of risk factor 'load' from childhood to adult life to IMT; 4) the relationship of IMT in young adults to familial mortality in first- and second-degree relatives due to vascular disease; and 5) the degree of familial aggregation of IMT in young adults and their parents.
The study was renewed in FY 2000 to investigate the third generation of the Muscatine Heart Study cohort. The renewal determined whether the offspring of cohort members with premature atherosclerosis or a familial history of cardiovascular disease had increased carotid intimal-medial thickness (IMT) or elevated risk factors, identify risk factors for progression of carotid IMT, and measure putative riskfactors for increased IMT (serologic evidence of Chlamydia pneumoniae or cytomegalovirus infection, high sensitivity C-reactive protein, fibrinogen, plasminogen activator inhibitor-1 and glycosylated hemoglobin).
The study was extended through June 2008 to measure intimal-medial thickness in a vascular bed affected earlier by atherosclerosis, the distal abdominal aorta, as well as in the carotid artery. In 662 offspring, aged 11 to 32 years, the investigators will determine if the aortic and carotid intimal-medial thickness are related, the relationship of cardiovascular risk factors to aortic intimal-medial thickness and the progression of carotid intimal-medial thickness, and the relationship of aortic and carotid intimal-medial thickness in the offspring to subclinical or clinical disease in their parents.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Ages
- 11 to 50 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult
- Study population
- 346 men and 379 women (members of original Muscatine cohort 635 members of the Muscatine Offspring cohort
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
Not reported in the source record.
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 12 Jun 2017.
- Background: PubMed 10458720Davis PH, Dawson JD, Mahoney LT, Lauer RM. Increased carotid intimal-medial thickness and coronary calcification are related in young and middle-aged adults. The Muscatine study. Circulation. 1999 Aug 24;100(8):838-42. doi: 10.1161/01.cir.100.8.838.
- Background: PubMed 9544525Dawson JD. Sample size calculations based on slopes and other summary statistics. Biometrics. 1998 Mar;54(1):323-30.
- Background: PubMed 11733400Davis PH, Dawson JD, Riley WA, Lauer RM. Carotid intimal-medial thickness is related to cardiovascular risk factors measured from childhood through middle age: The Muscatine Study. Circulation. 2001 Dec 4;104(23):2815-9. doi: 10.1161/hc4601.099486.
- Background: PubMed 12585709Sonka M, Liang W, Lauer RM. Automated analysis of brachial ultrasound image sequences: early detection of cardiovascular disease via surrogates of endothelial function. IEEE Trans Med Imaging. 2002 Oct;21(10):1271-9. doi: 10.1109/TMI.2002.806288.
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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.
Patricia H Davis, MD principal investigator
University of Iowa
Questions about this trial
What is this clinical trial studying?
An observational study of Atherosclerosis and Cardiovascular Diseases, run by Patricia H Davis.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
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 12 Jun 2017. Status can change between updates, so confirm with the study contact before making plans.
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.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00005397, which also lists 4 linked publications.
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 12 Jun 2017.