HealthyNCT00001226
Lipoprotein Metabolism in Normal Volunteers and Patients With Abnormal Levels of Lipoproteins
An observational study of Healthy and Hyperlipoproteinemia, run by National Heart, Lung, and Blood Institute (NHLBI) at 1 site in United States.
Trial summary
Researchers plan to study the fat-rich particles, called lipoproteins, which circulate in the blood. This study is designed to improve understanding of normal, as well as abnormal, lipoprotein metabolism and the role it plays in the development of hardening of the arteries (atherosclerosis). Read more about this study
- Who is it for?
- Any ageHealthy volunteers can take part
- Conditions the study is for
- Healthy, Hyperlipoproteinemia
- How many people
- 90 participants
- Where
- 1 siteUnited States
- Study dates
- Dec 1987to Mar 2002
- 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 Any age
- All sexes
- Healthy volunteers accepted
- Child, Adult, Older adult
The subjects for these investigations will be either healthy normal volunteer control subjects or patients who have a dyslipoproteinemia.
Subjects must be 18-80 years old.
Trial locations and contacts
1 site in 1 country.
United States1 site
National Heart, Lung and Blood Institute (NHLBI)
Bethesda, Maryland, 20892
About this study
Official title: Lipoprotein Metabolism in Normal Volunteers and Dyslipoproteinemic Patients (Stable Isotopes)
Researchers plan to study the fat-rich particles, called lipoproteins, which circulate in the blood. This study is designed to improve understanding of normal, as well as abnormal, lipoprotein metabolism and the role it plays in the development of hardening of the arteries (atherosclerosis).
Patients participating in this study will receive an intravenous (directly into the vein) injection of a small amount of specially prepared amino acids. The amino acids being injected are the same amino acids present in a normal diet. The amount of amino acid given will be less than the amount eaten in a protein-rich meal. The amino acids will be labeled with nonradioactive heavy isotopes which are also present in the environment n low amounts.
Patients participating in the study will be required to have blood samples taken, and provide urine samples throughout the course of the study. In addition, patient will be required to follow a specially formulated diet. Patients will be weighed throughout the course of the study.
Read the detailed description
Apolipoproteins regulate the metabolism of lipids and lipoproteins in plasma of humans. In order to investigate the roles of apolipoproteins in these processes, we plan to quantitate the kinetics of the metabolism of apolipoproteins utilizing nonradioactive isotope labeled amino-acids.
- Conditions
- Healthy, Hyperlipoproteinemia
- Keywords
- Nonradioactive Isotopes, Lipoprotein Kinetics, Apolipoproteins, Dyslipoproteinemia, Healthy Volunteers
- Medical subject headings
- Hyperlipoproteinemias, Dyslipidemias
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted4 Nov 1999 (estimated)
- Study startDec 1987
- Study completionMar 2002
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for HealthyStudies of the same condition, open and under way.
- More trials run by National Heart, Lung, and Blood Institute (NHLBI)The sponsor's other registered studies.
- 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
- Enrolment
- 90 participants
Sponsor and investigators
- Sponsor type
- US National Institutes of Health
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00001226
- Sponsor's protocol ID
- 870207
- Other IDs
- 87-H-0207
- Status last verified
- Mar 2002
- First submitted
- 3 Nov 1999
- Last updated
- 4 Mar 2008
- Results posted
- No
Publications
Gordon T, Castelli WP, Hjortland MC, Kannel WB, Dawber TR. High density lipoprotein as a protective factor against coronary heart disease. The Framingham Study. Am J Med. 1977 May;62(5):707-14. doi: 10.1016/0002-9343(77)90874-9.
PubMed 193398Blankenhorn DH, Nessim SA, Johnson RL, Sanmarco ME, Azen SP, Cashin-Hemphill L. Beneficial effects of combined colestipol-niacin therapy on coronary atherosclerosis and coronary venous bypass grafts. JAMA. 1987 Jun 19;257(23):3233-40.
PubMed 3295315Brown MS, Goldstein JL. A receptor-mediated pathway for cholesterol homeostasis. Science. 1986 Apr 4;232(4746):34-47. doi: 10.1126/science.3513311. No abstract available.
PubMed 3513311
Study at a glance
From the registry record, last updated by the sponsor on 4 Mar 2008. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Lipoprotein Metabolism in Normal Volunteers and Dyslipoproteinemic Patients (Stable Isotopes)
- ClinicalTrials.gov ID
- NCT00001226
- Acronym / sponsor ID
- 870207
- Conditions
- Healthy, Hyperlipoproteinemia
- Keywords
- Nonradioactive Isotopes, Lipoprotein Kinetics, Apolipoproteins, Dyslipoproteinemia, Healthy Volunteers
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 90 participants
- Lead sponsor
- National Heart, Lung, and Blood Institute (NHLBI)US National Institutes of Health
- Study start
- Dec 1987
- Study completion
- Mar 2002
- First posted
- 4 Nov 1999 (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.
Researchers plan to study the fat-rich particles, called lipoproteins, which circulate in the blood. This study is designed to improve understanding of normal, as well as abnormal, lipoprotein metabolism and the role it plays in the development of hardening of the arteries (atherosclerosis).
Patients participating in this study will receive an intravenous (directly into the vein) injection of a small amount of specially prepared amino acids. The amino acids being injected are the same amino acids present in a normal diet. The amount of amino acid given will be less than the amount eaten in a protein-rich meal. The amino acids will be labeled with nonradioactive heavy isotopes which are also present in the environment n low amounts.
Patients participating in the study will be required to have blood samples taken, and provide urine samples throughout the course of the study. In addition, patient will be required to follow a specially formulated diet. Patients will be weighed throughout the course of the study.
Detailed description
Apolipoproteins regulate the metabolism of lipids and lipoproteins in plasma of humans. In order to investigate the roles of apolipoproteins in these processes, we plan to quantitate the kinetics of the metabolism of apolipoproteins utilizing nonradioactive isotope labeled amino-acids.
Study design
Who may qualify
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult, Older adult
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 4 Mar 2008.
- Background: PubMed 193398Gordon T, Castelli WP, Hjortland MC, Kannel WB, Dawber TR. High density lipoprotein as a protective factor against coronary heart disease. The Framingham Study. Am J Med. 1977 May;62(5):707-14. doi: 10.1016/0002-9343(77)90874-9.
- Background: PubMed 3295315Blankenhorn DH, Nessim SA, Johnson RL, Sanmarco ME, Azen SP, Cashin-Hemphill L. Beneficial effects of combined colestipol-niacin therapy on coronary atherosclerosis and coronary venous bypass grafts. JAMA. 1987 Jun 19;257(23):3233-40.
- Background: PubMed 3513311Brown MS, Goldstein JL. A receptor-mediated pathway for cholesterol homeostasis. Science. 1986 Apr 4;232(4746):34-47. doi: 10.1126/science.3513311. No abstract available.
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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.
The record lists no contact. Use the official record to reach the sponsor.
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 Hyperlipoproteinemia, run by National Heart, Lung, and Blood Institute (NHLBI) at 1 site in United States.
The full registered description is in the About this study section and the official record.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 4 Mar 2008. 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.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00001226, which also lists 3 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 4 Mar 2008.