title: Density of intimal smooth muscle cells in the coronary arteries of Bolivians.
abstract: OBJECTIVE
  To test an equation that uses measurements of fibroplastic intimal thickening and foam cell infiltrates, precursors for necrotic cores of atherosclerotic plaques in coronary arteries, to compute anticipated amounts of atheronecrosis. Data from New Orleans, La, and La Paz, Bolivia, afforded the opportunity to test the precision of the equation by comparing findings in separate populations.
  
  
  METHODS
  Coronary arteries retrieved at autopsy in La Paz, Bolivia, were processed into hematoxylin-eosin-stained paraffin sections along with a parallel series in New Orleans.
  
  
  RESULTS
  The Bolivian data fit the equation without modification. Findings showed the precursors of atheronecrosis to progress at the slowest rate in Bolivians, at the fastest rate in New Orleans men, and at an intermediate rate in New Orleans women.
  
  
  CONCLUSIONS
  The population with the most extensive atheronecrosis in aging subjects also had the greatest degrees of precursor changes in young adults. An equation that describes these principles precisely applies equally well to all three of the populations examined here, which are the only ones studied to date.
authors.affiliation: Department of Pathology, Louisiana State Medical Center, New Orleans 70112, USA.
authors.forename: R E
authors.initials: RE
authors.lastname: Tracy
authors.forename: S
authors.initials: S
authors.lastname: Casablanca
authors.forename: D
authors.initials: D
authors.lastname: Parra
authors.forename: J
authors.initials: J
authors.lastname: Rios-Dalenz
mesh_terms: D000328:Adult; D000375:Aging / Q000473:pathology; D000704:Analysis of Variance; D044383:Black People; D001838:Bolivia / Q000453:epidemiology; D003324:Coronary Artery Disease / Q000453:epidemiology / Q000473:pathology*; D003331:Coronary Vessels / Q000473:pathology*; D005260:Female; D006801:Humans; D008145:Louisiana / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D009131:Muscle, Smooth, Vascular / Q000473:pathology*; D012044:Regression Analysis; D044465:White People; D001741:Black or African American