The effects of smoking cigarettes on gene activity have been investigated in the largest study of its kind. Researchers writing in the open access journal BMC Medical Genomics studied white blood cells taken from 1,240 people to identify 323 unique genes whose expression levels were significantly correlated with smoking behavior.
Jac Charlesworth led a team of researchers from the Southwest Foundation for Biomedical Research, Texas, USA, who carried out the study as part of the long running San Antonio Family Heart Study in families from the Mexican American community in San Antonio. She said, “Previous studies of gene expression as influenced by smoking have been seriously limited in size with the largest of the in vivo studies including only 42 smokers and 43 non-smokers. We studied 1,240 individuals, including 297 current smokers. Never before has such a clear link between smoking and transcriptomics been revealed, and the scale at which exposure to cigarette smoke appears to influence the expression levels of our genes is sobering.”
- Smoking cigarettes damages 323 different human genes [Medical Science] (io9.com)
- Cigarette Smoke Alters Your Genes (zocdoc.com)
- Cigarettes answer: How many substances are in cigarettes smoke (wiki.answers.com)
- Smoking causes gene damage in minutes (holykaw.alltop.com)
- Quit smoking: Can’t put down your cigarettes? A miswired brain could be to blame (dailymail.co.uk)