Composition of atherosclerotic plaques in the epicardial coronary arteries in juvenile (type I) diabetes mellitus

Am J Cardiol. 1992 Nov 15;70(15):1264-8. doi: 10.1016/0002-9149(92)90759-r.


The composition of atherosclerotic plaques in 331 five-mm segments of the 4 major (left main, left anterior descending, left circumflex, and right) epicardial coronary arteries of 8 patients with juvenile (mean age at onset, 9 years; mean age at death, 29 years) diabetes mellitus was determined by computerized planimetric analysis. Analysis of all coronary segments disclosed that the plaques consisted primarily of dense (53%) and cellular (38%) fibrous tissue. Pultaceous debris (7%), foam cells (1.2%) and calcific deposits (0.7%) occupied a small percentage of the plaques. Thus, 91% of the coronary plaques in these young diabetic patients consisted of fibrous tissue and nearly all of the remaining 9% consisted of lipid deposits. Analysis of composition according to degrees of cross-sectional luminal narrowing revealed marked increases in dense fibrous tissue (from 31 to 74%), pultaceous debris (from 3 to 12%), and calcific deposits (from 0% to 3%) as the cross-sectional area narrowing increased from < or = 25% to > 75%. Compared with older patients with fatal coronary artery disease, the patients with juvenile diabetes had more dense fibrous tissue and pultaceous debris and less calcific deposits.

MeSH terms

  • Adult
  • Arteries / pathology
  • Coronary Artery Disease / complications*
  • Coronary Artery Disease / pathology*
  • Coronary Vessels / pathology*
  • Diabetes Mellitus, Type 1 / complications*
  • Female
  • Humans
  • Male