Predictors of carotid thickness and plaque progression during a decade: The multi-ethnic study of atherosclerosis

Matthew C. Tattersall, Amanda Gassett, Claudia E. Korcarz, Adam D. Gepner, Joel D. Kaufman, Kiang J. Liu, Brad C. Astor, Lianne Sheppard, Richard A. Kronmal, James H. Stein*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

88 Scopus citations

Abstract

Background and Purpose-Carotid artery intima-media thickness (IMT) and plaque are noninvasive markers of subclinical arterial injury that predict incident cardiovascular disease. We evaluated predictors of longitudinal changes in IMT and new plaque during a decade in a longitudinal multiethnic cohort. Methods-Carotid IMT and plaque were evaluated in Multi-Ethnic Study of Atherosclerosis (MESA) participants at exams 1 and 5, a mean (standard deviation) of 9.4 (0.5) years later. Far wall carotid IMT was measured in both common and internal carotid arteries. A plaque score was calculated from all carotid segments. Mixed-effects longitudinal and multivariate regression models evaluated associations of baseline risk factors and time-updated medication use with IMT progression and plaque formation. Results-The 3441 MESA participants were aged 60.3 (9.4) years (53% women; 26% blacks, 22% Hispanic, 13% Chinese); 1620 (47%) had carotid plaque. Mean common carotid artery IMT progression was 11.8 (12.8) μm/year, and 1923 (56%) subjects developed new plaque. IMT progressed more slowly in Chinese (β=-2.89; P=0.001) and Hispanic participants (β=-1.81; P=0.02), and with higher baseline high-density lipoprotein cholesterol (per 5 mg/dL; β=-0.22; P=0.03), antihypertensive use (β=-2.06; P=0.0004), and time on antihypertensive medications (years; β=-0.29; P<0.0001). Traditional risk factors were associated with new plaque formation, with strong associations for cigarette use (odds ratio, 2.31; P<0.0001) and protection by black ethnicity (odds ratio, 0.68; P<0.0001). Conclusions-In a large, multiethnic cohort with a decade of follow-up, ethnicity was a strong, independent predictor of carotid IMT and plaque progression. Antihypertensive medication use was associated with less subclinical disease progression.

Original languageEnglish (US)
Pages (from-to)3257-3262
Number of pages6
JournalStroke
Volume45
Issue number11
DOIs
StatePublished - 2014

Keywords

  • Atherosclerosis
  • Carotid arteries
  • Epidemiology
  • Risk factors

ASJC Scopus subject areas

  • Clinical Neurology
  • Cardiology and Cardiovascular Medicine
  • Advanced and Specialized Nursing

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