- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT01178320
Carotid Plaque Characteristics by MRI in AIM-HIGH (Carotid MRI Substudy)
Carotid Plaque Characteristics by MRI in AIM-HIGH
Aperçu de l'étude
Statut
Intervention / Traitement
Description détaillée
Although studies have suggested that plaque morphology and composition are important determinants of plaque stability, our understanding on plaque tissue components is mainly from histological studies until recent development in MRI technique. A low level of HDL is associated with higher risk of cardiovascular events and increased amount of lipid content in the carotid plaques. Treatment with LDL-lowering plus HDL-raising compared with LDL-lowering alone more effectively protects against atherosclerosis progression. It is widely believed that HDL or its apolipoproteins mediate the removal of excess free cholesterol from peripheral cells and the cholesterol is delivered via either LDL or HDL to the liver for excretion into the bile. However, it has not been tested and approved in human atherosclerotic condition in vivo. The NIH/Abbott-funded multi-center AIM-HIGH trial is designed to compare the clinical efficacy of LDL-lowering alone with statin versus LDL-lowering plus HDL-raising with statin plus nicotinic acid combination therapy in patients with established vascular disease and high triglycerides and low HDL.
We propose to conduct a carotid MRI sub-study in 220 subjects enrolled in AIM-HIGH to investigate the important vascular biological mechanisms of HDL-raising therapy. Image collection will occur at 3 timepoints. The hypotheses and specific aims are:
- (1) To test the primary hypothesis that compared with LDL-lowering alone, intensive LDL-lowering plus HDL-raising therapy decreases the mean plaque lipid composition in carotid arteries assessed by MRI.
- (2) To test the hypothesis that compared with LDL-lowering alone, intensive LDL-lowering plus HDL-raising therapy decreases the plaque burden including volume and wall thickness.
- (3) To test the hypothesis that increased plaque lipid composition or vessel wall thickness by MRI is associated with increased risk of cardiovascular events.
- (4)To test a hypothesis that LDL-lowering plus HDL-raising, compared to LDL-lowering alone, will promote more rapid plaque lipid depletion. And determine the time-course of atherosclerotic plaque lipid depletion during lipid therapy.
- (5) To examine the association of clinical risk factors, lipids, lipoprotein heterogeneity, inflammatory markers and carotid plaque characteristics.
This MRI sub-study offers a unique opportunity to investigate the effectiveness of LDL-lowering plus HDL-raising therapy on human atherosclerotic plaque in vivo, to examine the association of plaque characteristics both lipid composition and volume assessed by MRI and cardiovascular outcome, and to gain novel insights in our understanding of atherosclerotic plaque pathology and the mechanisms of intensive lipid management in preventing cardiovascular events.
Type d'étude
Inscription (Réel)
Contacts et emplacements
Lieux d'étude
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Alberta
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Calgary, Alberta, Canada, T2E-7C5
- Heart Health Institute
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Calgary, Alberta, Canada, T2N-2T9
- University Of Calgary
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British Columbia
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Vancouver, British Columbia, Canada, V5Z-1M9
- Vancouver General Hospital
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Ontario
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London, Ontario, Canada, N6A-5A5
- University of Western Ontario
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Arizona
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Phoenix, Arizona, États-Unis, 85032
- Cardiovascular Consultants
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California
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Long Beach, California, États-Unis, 90822
- Long Beach VA Medical Center
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Los Angeles, California, États-Unis, 90033
- University of Southern California
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Maryland
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Baltimore, Maryland, États-Unis, 21201
- University of Maryland
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Baltimore, Maryland, États-Unis, 21205
- Johns Hopkins University
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Minnesota
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Rochester, Minnesota, États-Unis, 55905
- Mayo Clinic
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North Carolina
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Durham, North Carolina, États-Unis, 27710
- Duke University
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Winston-Salem, North Carolina, États-Unis, 27157
- Wake Forest University
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Pennsylvania
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Philadelphia, Pennsylvania, États-Unis, 19104
- Philadelphia VA Medical Center
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Texas
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Houston, Texas, États-Unis, 77030
- Baylor College of Medicine
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Houston, Texas, États-Unis, 77030
- Methodist Hospital
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Houston, Texas, États-Unis, 77030
- Kelsey Research Foundation
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Washington
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Seattle, Washington, États-Unis, 98104
- Harborview Medical Center
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Seattle, Washington, États-Unis, 98105
- University of Washington
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Seattle, Washington, États-Unis, 98108
- Puget Sound VA Medical Center, Seattle Campus
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria:
- Eligible for main AIM-HIGH study (NCT00120289)
- Medically able to undergo MRI procedure
- Willing to provide informed consent for participation in this substudy
Exclusion Criteria:
- Uses pacemaker or has metallic implants
- History of bilateral carotid endarterectomy
- Glomerular filtration rate less than 60 mL/min/1.73 m^2
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Modèles d'observation: Cohorte
- Perspectives temporelles: Éventuel
Cohortes et interventions
Groupe / Cohorte |
Intervention / Traitement |
|---|---|
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Simvastatine
Participants à l'étude principale AIM-HIGH qui reçoivent de la simvastatine.
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Participants will be enrolled in this substudy only if they are candidates for the main AIM-HIGH study (NCT00120289).
Participants will be randomly assigned to simvastatin or simvastatin plus niacin as a part of the main AIM-HIGH protocol, and adjustments in simvastatin and/or niacin doses will be made as per the protocol for the main AIM-HIGH study.
Autres noms:
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Simvastatine et niacine à libération prolongée
Participants à l'étude principale AIM-HIGH qui reçoivent de la simvastatine et de la niacine à libération prolongée.
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Participants will be enrolled in this substudy only if they are candidates for the main AIM-HIGH study (NCT00120289).
Participants will be randomly assigned to simvastatin or simvastatin plus niacin as a part of the main AIM-HIGH protocol, and adjustments in simvastatin and/or niacin doses will be made as per the protocol for the main AIM-HIGH study.
Autres noms:
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Mean plaque lipid composition in carotid arteries assessed by MR
Délai: Through 24Months post AIM-HIGH Randomization
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To test the primary hypothesis that compared with LDL-lowering alone, intensive LDL-lowering plus HDL-raising therapy decreases the mean plaque lipid composition in carotid arteries assessed by MRI.
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Through 24Months post AIM-HIGH Randomization
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Additional plaque characteristics as assessed by MRI
Délai: Through 24Months post AIM-HIGH Randomization
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To test the additional hypotheses regarding plaque burden, plaque lipid depletion time course, association with cardiovascular event risk and lipid characteristics.
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Through 24Months post AIM-HIGH Randomization
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Collaborateurs et enquêteurs
Parrainer
Collaborateurs
Publications et liens utiles
Publications générales
- Hippe DS, Phan BAP, Sun J, Isquith DA, O'Brien KD, Crouse JR, Anderson T, Huston J, Marcovina SM, Hatsukami TS, Yuan C, Zhao XQ. Lp(a) (Lipoprotein(a)) Levels Predict Progression of Carotid Atherosclerosis in Subjects With Atherosclerotic Cardiovascular Disease on Intensive Lipid Therapy: An Analysis of the AIM-HIGH (Atherothrombosis Intervention in Metabolic Syndrome With Low HDL/High Triglycerides: Impact on Global Health Outcomes) Carotid Magnetic Resonance Imaging Substudy-Brief Report. Arterioscler Thromb Vasc Biol. 2018 Mar;38(3):673-678. doi: 10.1161/ATVBAHA.117.310368. Epub 2018 Jan 4.
- Sun J, Zhao XQ, Balu N, Hippe DS, Hatsukami TS, Isquith DA, Yamada K, Neradilek MB, Canton G, Xue Y, Fleg JL, Desvigne-Nickens P, Klimas MT, Padley RJ, Vassileva MT, Wyman BT, Yuan C. Carotid magnetic resonance imaging for monitoring atherosclerotic plaque progression: a multicenter reproducibility study. Int J Cardiovasc Imaging. 2015 Jan;31(1):95-103. doi: 10.1007/s10554-014-0532-7. Epub 2014 Sep 13.
- Chen H, Sun J, Kerwin WS, Balu N, Neradilek MB, Hippe DS, Isquith D, Xue Y, Yamada K, Peck S, Yuan C, O'Brien KD, Zhao XQ. Scan-rescan reproducibility of quantitative assessment of inflammatory carotid atherosclerotic plaque using dynamic contrast-enhanced 3T CMR in a multi-center study. J Cardiovasc Magn Reson. 2014 Aug 1;16(1):51. doi: 10.1186/s12968-014-0051-7.
- Zhao XQ, Hatsukami TS, Hippe DS, Sun J, Balu N, Isquith DA, Crouse JR 3rd, Anderson T, Huston J 3rd, Polissar N, O'Brien K, Yuan C; AIM-HIGH Carotid MRI Sub-study Investigators. Clinical factors associated with high-risk carotid plaque features as assessed by magnetic resonance imaging in patients with established vascular disease (from the AIM-HIGH Study). Am J Cardiol. 2014 Nov 1;114(9):1412-9. doi: 10.1016/j.amjcard.2014.08.001. Epub 2014 Aug 13.
- Zhao XQ, Sun J, Hippe DS, Isquith DA, Canton G, Yamada K, Balu N, Crouse JR 3rd, Anderson TJ, Huston J 3rd, O'Brien KD, Hatsukami TS, Yuan C; AIM-HIGH Carotid MRI Substudy Investigators. Magnetic Resonance Imaging of Intraplaque Hemorrhage and Plaque Lipid Content With Continued Lipid-Lowering Therapy: Results of a Magnetic Resonance Imaging Substudy in AIM-HIGH. Circ Cardiovasc Imaging. 2022 Nov;15(11):e014229. doi: 10.1161/CIRCIMAGING.122.014229. Epub 2022 Nov 15.
- O'Brien KD, Hippe DS, Chen H, Neradilek MB, Probstfield JL, Peck S, Isquith DA, Canton G, Yuan C, Polissar NL, Zhao XQ, Kerwin WS. Longer duration of statin therapy is associated with decreased carotid plaque vascularity by magnetic resonance imaging. Atherosclerosis. 2016 Feb;245:74-81. doi: 10.1016/j.atherosclerosis.2015.11.032. Epub 2015 Dec 1.
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
- Ischémie myocardique
- Maladies cardiaques
- Maladies cardiovasculaires
- Maladies vasculaires
- Troubles cérébrovasculaires
- Maladies du cerveau
- Maladies du système nerveux central
- Maladies du système nerveux
- Artériosclérose
- Maladies artérielles occlusives
- Maladie coronarienne
- Maladie de l'artère coronaire
- Maladies de l'artère carotide
- Athérosclérose
- Effets physiologiques des médicaments
- Mécanismes moléculaires de l'action pharmacologique
- Agents vasodilatateurs
- Inhibiteurs d'enzymes
- Antimétabolites
- Micronutriments
- Agents anticholestérolémiants
- Agents hypolipidémiants
- Agents de régulation des lipides
- Inhibiteurs de l'hydroxyméthylglutaryl-CoA réductase
- Vitamines
- Complexe de vitamine B
- Acides nicotiniques
- Simvastatine
- Niacinamide
- Niacine
Autres numéros d'identification d'étude
- 627
- R01HL088214 (Subvention/contrat des NIH des États-Unis)
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