Journal
ARTERIOSCLEROSIS THROMBOSIS AND VASCULAR BIOLOGY
Volume 32, Issue 4, Pages 1024-1031Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1161/ATVBAHA.111.243261
Keywords
Endothelial function; Epidemiology; children; passive smoking
Categories
Funding
- Academy of Finland [121584, 126925, 124282, 129378]
- Social Insurance Institution of Finland
- Special Federal Grants of Finland
- Juho Vainio Foundation
- Finnish Foundation of Cardiovascular Research
- Paavo Nurmi Foundation
- Orion-Farmos Research Foundation
- Commonwealth Departments of Sport, Recreation and Tourism, and Health
- National Heart Foundation
- Commonwealth Schools Commission
- National Health and Medical Research Council
- Tasmanian Community
- Veolia Environmental Services
- Australian National Health Medical Research Council [1013538, APP1037559]
- Heart Foundation
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Objective-Passive smoking has been associated with increased cardiovascular morbidity. The present study aimed to examine the long-term effects of childhood exposure to tobacco smoke on endothelium-dependent vasodilation in adults. Methods and Results-The analyses were based on 2171 participants in the population-based Cardiovascular Risk in Young Finns (N=2067) and Childhood Determinants of Adult Health (N=104) studies who had measures of conventional risk factors (lipids, blood pressure, adiposity, socioeconomic status) and self-reported parental smoking status when aged 3 to 18 years at baseline. They were re-examined 19 to 27 years later when aged 28 to 45 years. Brachial artery flow-mediated dilatation was measured at follow-up with ultrasound. In analyses adjusting for age, sex, and childhood risk factors, flow-mediated dilatation was reduced among participants who had parents that smoked in youth compared to those whose parents did not smoke (Young Finns: 9.2 +/- 0.1% (mean +/- SEM) versus 8.6 +/- 0.1%, P=0.001; Childhood Determinants of Adult Health: 7.4 +/- 0.6% versus 4.9 +/- 0.9%, P=0.04). These effects remained after adjustment for adult risk factors including own smoking status (Young Finns, P=0.003; Childhood Determinants of Adult Health, P=0.03). Conclusion-Parental smoking in youth is associated with reduced flow-mediated dilatation in young adulthood measured over 20 years later. These findings suggest that passive exposure to cigarette smoke among children might cause irreversible impairment in endothelium-dependent vasodilation. (Arterioscler Thromb Vasc Biol. 2012; 32: 1024-1031.)
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