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(Circulation. 2003;108:2757.)
© 2003 American Heart Association, Inc.

Clinical Investigation and Reports

Relation Between Progression and Regression of Atherosclerotic Left Main Coronary Artery Disease and Serum Cholesterol Levels as Assessed With Serial Long-Term (12 Months) Follow-Up Intravascular Ultrasound

Clemens von Birgelen, MD, PhD; Marc Hartmann, MD; Gary S. Mintz, MD; Dietrich Baumgart, MD; Axel Schmermund, MD; Raimund Erbel, MD

From the Department of Cardiology, Essen University, Essen, Germany (C.v.B., M.H., D.B., A.S., R.E.); the Department of Cardiology, Medisch Spectrum Twente, Enschede, the Netherlands (C.v.B.); and the Cardiovascular Research Foundation, New York, NY (G.S.M.).

Correspondence to Dr Clemens von Birgelen, Medisch Spectrum Twente, Enschede Hospital, Cardiology Department, Ariensplein 1, 7511 JX Enschede, The Netherlands. E-mail von.birgelen{at}freeler.nl

Received May 28, 2003; revision received September 4, 2003; accepted September 8, 2003.

Background— The relation between serum lipids and risk of coronary events has been established, but there are no data demonstrating directly the relation between serum low-density lipoprotein (LDL) cholesterol and high-density lipoprotein (HDL) cholesterol versus serial changes in coronary plaque dimensions.

Methods and Results— We performed standard analyses of serial intravascular ultrasound (IVUS) studies of 60 left main coronary arteries obtained 18.3±9.4 months apart to evaluate progression and regression of mild atherosclerotic plaques in relation to serum cholesterol levels. Overall, there was (1) a positive linear relation between LDL cholesterol and the annual changes in plaque plus media (P&M) cross-sectional area (CSA) (r=0.41, P<0.0001) with (2) an LDL value of 75 mg/dL as the cutoff when regression analysis predicted on average no annual P&M CSA increase; (3) an inverse relation between HDL cholesterol and annual changes in P&M CSA (r=-0.30, P<0.02); (4) an inverse relation between LDL cholesterol and annual changes in lumen CSA (r=-0.32, P<0.01); and (5) no relation between LDL and HDL cholesterol and the annual changes in total arterial CSA (remodeling). Despite similar baseline IVUS characteristics, patients with an LDL cholesterol level 120 mg/dL showed more annual P&M CSA progression and lumen reduction than patients with lower LDL cholesterol.

Conclusions— There is a positive linear relation between LDL cholesterol and annual changes in plaque size, with an LDL value of 75 mg/dL predicting, on average, no plaque progression. HDL cholesterol shows an inverse relation with annual changes in plaque size.

Key Words: ultrasonics • coronary disease • cholesterol • lipids

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