1,N(2)-propanodeoxyguanosine adduct formation in aortic DNA following inhalation of acrolein

Environmental Health Perspectives
A PennF L Chung

Abstract

Recent reports indicate that many of the cytotoxic and health-threatening components of environmental tobacco smoke (ETS) reside in the vapor phase of the smoke. We have reported previously that inhalation of 1,3-butadiene, a prominent vapor phase component of ETS, accelerates arteriosclerotic plaque development in cockerels. In this study we asked whether inhaled acrolein, a reactive aldehyde that is also a prominent vapor-phase component of ETS, damages artery-wall DNA and accelerates plaque development. Cockerels inhaled 0, 1, or 10 ppm acrolein mixed with HEPA-filtered air for 6 hr. Half were killed immediately (day 1 group) for detection of the stable, premutagenic 1,N(2)-propanodeoxyguanosine acrolein adduct (AdG3) in aortic DNA via a (32)P-postlabeling/HPLC method, and half were killed after 10 days (day 10 group) for indirect assessment of adduct repair. In the day 1 group, acrolein-DNA adducts were 5 times higher in the 1 and 10 ppm groups than in HEPA-filtered air controls. However, in the day 10 group, adduct levels in the 1 and 10 ppm acrolein groups were reduced to the control adduct level. For the plaque studies, cockerels inhaled 1 ppm acrolein (6 hr/day, 8 weeks), mixed with the same HEPA-filtered air inhaled by...Continue Reading

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Citations

Apr 11, 2007·Mutation Research·Arthur Penn, Carroll A Snyder
Jan 13, 2004·American Journal of Physiology. Heart and Circulatory Physiology·Aruni Bhatnagar

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