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Original Article
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Volume 338:1650-1656 June 4, 1998 Number 23
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Association between Multiple Cardiovascular Risk Factors and Atherosclerosis in Children and Young Adults
Gerald S. Berenson, M.D., Sathanur R. Srinivasan, Ph.D., Weihang Bao, Ph.D., William P. Newman, M.D., Richard E. Tracy, M.D., Ph.D., Wendy A. Wattigney, M.S., for The Bogalusa Heart Study

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ABSTRACT

Background In adults, cardiovascular risk factors reinforce each other in their effect on cardiovascular events. However, information is scant on the relation of multiple risk factors to the extent of asymptomatic atherosclerosis in young people.

Methods We performed autopsies on 204 young persons 2 to 39 years of age, who had died from various causes, principally trauma. Data on antemortem risk factors were available for 93 of these persons, who were the focus of this study. We correlated risk factors with the extent of atherosclerosis in the aorta and coronary arteries.

Results The extent of fatty streaks and fibrous plaques in the aorta and coronary arteries increased with age. The association between fatty streaks and fibrous plaques was much stronger in the coronary arteries (r=0.60, P<0.001) than in the aorta (r=0.23, P=0.03). Among the cardiovascular risk factors, body-mass index, systolic and diastolic blood pressure, and serum concentrations of total cholesterol, triglycerides, low-density lipoprotein cholesterol, and high-density lipoprotein cholesterol, as a group, were strongly associated with the extent of lesions in the aorta and coronary arteries (canonical correlation [a measure of the association between groups of variables]: r=0.70; P<0.001). In addition, cigarette smoking increased the percentage of the intimal surface involved with fibrous plaques in the aorta (1.22 percent in smokers vs. 0.12 percent in nonsmokers, P=0.02) and fatty streaks in the coronary vessels (8.27 percent vs. 2.89 percent, P=0.04). The effect of multiple risk factors on the extent of atherosclerosis was quite evident. Subjects with 0, 1, 2, and 3 or 4 risk factors had, respectively, 19.1 percent, 30.3 percent, 37.9 percent, and 35.0 percent of the intimal surface covered with fatty streaks in the aorta (P for trend=0.01). The comparable figures for the coronary arteries were 1.3 percent, 2.5 percent, 7.9 percent, and 11.0 percent, respectively, for fatty streaks (P for trend=0.01) and 0.6 percent, 0.7 percent, 2.4 percent, and 7.2 percent for collagenous fibrous plaques (P for trend=0.003).

Conclusions These findings indicate that as the number of cardiovascular risk factors increases, so does the severity of asymptomatic coronary and aortic atherosclerosis in young people.


Source Information

From the Tulane Center for Cardiovascular Health, Tulane School of Public Health and Tropical Medicine (G.S.B., S.R.S., W.B., W.A.W.); and the Department of Pathology, Louisiana State University Medical Center (W.P.N., R.E.T.) — both in New Orleans.

Address reprint requests to Dr. Berenson at the Tulane Center for Cardiovascular Health, Tulane School of Public Health and Tropical Medicine, 1501 Canal St., 14th Fl., New Orleans, LA 70112-2824.

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Related Letters:

Cardiovascular Risk Factors and Atherosclerosis in Children and Young Adults
Perrone J., Hollander J. E., De Roos F., Berenson G. S.
Extract | Full Text  
N Engl J Med 1998; 339:1083-1084, Oct 8, 1998. Correspondence

Psychological Factors and Coronary Artery Disease
Pickering T., Davidson K., Chaplin W., Soteriades E. S., Olson J. C., Edmundowicz D., Orchard T. J., Markovitz J. H., Iribarren C., Bild D. E., O'Malley P. G., Taylor A. J.
Extract | Full Text | PDF  
N Engl J Med 2001; 344:608-611, Feb 22, 2001. Correspondence

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