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Parents' smoke injures children's blood vessels

layer of cells helps vessels expand and contract in response to different amounts of blood flow. If these cells are damaged, the blood vessels will be "stiff" and less able to handle the body's changing blood flow needs.

After exposure to tobacco smoke, the men's blood levels of 8-epi-PGF2alpha significantly increased from an average of 20 picograms per milliliter (pg/mL) to 36 pg/mL. Their FMD decreased from 7.8 percent to 3.9 percent.

"These findings may add relevance to the idea that everyone should be protected from even short-term exposure to second-hand smoke," says lead researcher Toru Kato, M.D., Ph.D., of the division of cardiology at Saitama Medical Center, Saitama Medical School in Japan.


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Contact: Carole Bullock
carole.bullock@heart.org
214-706-1279
American Heart Association
18-Nov-2002


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