- ICH GCP
- Yhdysvaltain kliinisten tutkimusten rekisteri
- Kliininen tutkimus NCT01178320
Carotid Plaque Characteristics by MRI in AIM-HIGH (Carotid MRI Substudy)
Carotid Plaque Characteristics by MRI in AIM-HIGH
Tutkimuksen yleiskatsaus
Tila
Interventio / Hoito
Yksityiskohtainen kuvaus
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.
Opintotyyppi
Ilmoittautuminen (Todellinen)
Yhteystiedot ja paikat
Opiskelupaikat
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Alberta
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Calgary, Alberta, Kanada, T2E-7C5
- Heart Health Institute
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Calgary, Alberta, Kanada, T2N-2T9
- University Of Calgary
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British Columbia
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Vancouver, British Columbia, Kanada, V5Z-1M9
- Vancouver General Hospital
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Ontario
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London, Ontario, Kanada, N6A-5A5
- University of Western Ontario
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Arizona
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Phoenix, Arizona, Yhdysvallat, 85032
- Cardiovascular Consultants
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California
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Long Beach, California, Yhdysvallat, 90822
- Long Beach VA Medical Center
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Los Angeles, California, Yhdysvallat, 90033
- University of Southern California
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Maryland
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Baltimore, Maryland, Yhdysvallat, 21201
- University of Maryland
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Baltimore, Maryland, Yhdysvallat, 21205
- Johns Hopkins University
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Minnesota
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Rochester, Minnesota, Yhdysvallat, 55905
- Mayo Clinic
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North Carolina
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Durham, North Carolina, Yhdysvallat, 27710
- Duke University
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Winston-Salem, North Carolina, Yhdysvallat, 27157
- Wake Forest University
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Pennsylvania
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Philadelphia, Pennsylvania, Yhdysvallat, 19104
- Philadelphia VA Medical Center
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Texas
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Houston, Texas, Yhdysvallat, 77030
- Baylor College of Medicine
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Houston, Texas, Yhdysvallat, 77030
- Methodist Hospital
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Houston, Texas, Yhdysvallat, 77030
- Kelsey Research Foundation
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Washington
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Seattle, Washington, Yhdysvallat, 98104
- Harborview Medical Center
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Seattle, Washington, Yhdysvallat, 98105
- University of Washington
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Seattle, Washington, Yhdysvallat, 98108
- Puget Sound VA Medical Center, Seattle Campus
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Osallistumiskriteerit
Kelpoisuusvaatimukset
Opintokelpoiset iät
Hyväksyy terveitä vapaaehtoisia
Sukupuolet, jotka voivat opiskella
Näytteenottomenetelmä
Tutkimusväestö
Kuvaus
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
Opintosuunnitelma
Miten tutkimus on suunniteltu?
Suunnittelun yksityiskohdat
- Havaintomallit: Kohortti
- Aikanäkymät: Tulevaisuuden
Kohortit ja interventiot
Ryhmä/Kohortti |
Interventio / Hoito |
|---|---|
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Simvastatiini
AIM-HIGH-päätutkimuksen osallistujat, jotka saavat simvastatiinia.
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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.
Muut nimet:
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Simvastatiini ja pitkävaikutteinen niasiini
AIM-HIGH-päätutkimuksen osallistujat, jotka saavat simvastatiinia ja pitkävaikutteista niasiinia.
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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.
Muut nimet:
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Mitä tutkimuksessa mitataan?
Ensisijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
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Mean plaque lipid composition in carotid arteries assessed by MR
Aikaikkuna: 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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Toissijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
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Additional plaque characteristics as assessed by MRI
Aikaikkuna: 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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Yhteistyökumppanit ja tutkijat
Sponsori
Yhteistyökumppanit
Julkaisuja ja hyödyllisiä linkkejä
Yleiset julkaisut
- 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.
Opintojen ennätyspäivät
Opi tärkeimmät päivämäärät
Opiskelun aloitus
Ensisijainen valmistuminen (Todellinen)
Opintojen valmistuminen (Todellinen)
Opintoihin ilmoittautumispäivät
Ensimmäinen lähetetty
Ensimmäinen toimitettu, joka täytti QC-kriteerit
Ensimmäinen Lähetetty (Arvio)
Tutkimustietojen päivitykset
Viimeisin päivitys julkaistu (Todellinen)
Viimeisin lähetetty päivitys, joka täytti QC-kriteerit
Viimeksi vahvistettu
Lisää tietoa
Tähän tutkimukseen liittyvät termit
Muita asiaankuuluvia MeSH-ehtoja
- Sydänlihaksen iskemia
- Sydänsairaudet
- Sydän-ja verisuonitaudit
- Verisuonisairaudet
- Aivoverenkiertohäiriöt
- Aivojen sairaudet
- Keskushermoston sairaudet
- Hermoston sairaudet
- Valtimotauti
- Valtimon tukossairaudet
- Sepelvaltimotauti
- Sepelvaltimotauti
- Kaulavaltimon sairaudet
- Ateroskleroosi
- Huumeiden fysiologiset vaikutukset
- Farmakologisen vaikutuksen molekyylimekanismit
- Vasodilataattorit
- Entsyymin estäjät
- Antimetaboliitit
- Mikroravinteet
- Kolesterolia ehkäisevät aineet
- Hypolipideemiset aineet
- Lipidejä säätelevät aineet
- Hydroksimetyyliglutaryyli-CoA-reduktaasin estäjät
- Vitamiinit
- B-vitamiinikompleksi
- Nikotiinihapot
- Simvastatiini
- Niasiiniamidi
- Niasiini
Muut tutkimustunnusnumerot
- 627
- R01HL088214 (Yhdysvaltain NIH-apuraha/sopimus)
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