Featured Research

from universities, journals, and other organizations

U Of MN Study First To Detect Tobacco-specific Carcinogens In Non-smokers In Public Setting

Date:
December 26, 2003
Source:
University Of Minnesota
Summary:
University of Minnesota researchers found that levels of a tobacco-specific lung carcinogen increased in nonsmokers when they visited a public setting where smoking is allowed. The carcinogens, metabolites of NNK, could increase their risk of lung cancer.

MINNEAPOLIS / ST. PAUL (Dec. 22, 2003) --University of Minnesota researchers found that levels of a tobacco-specific lung carcinogen increased in nonsmokers when they visited a public setting where smoking is allowed. The carcinogens, metabolites of NNK, could increase their risk of lung cancer. The study is published Dec. 22 by the American Association for Cancer Research.

Related Articles


This study is the first to measure tobacco-specific carcinogens in nonsmokers exposed to environmental tobacco smoke (ETS) in a public setting, in this case a casino. (A previous study by the University of Minnesota examined tobacco carcinogens in nonsmoking women who were exposed to secondhand smoke at home.)

"Environmental tobacco smoke in restaurants, bars, and casinos presents a potential health hazard to employees and non-smoking patrons," said lead author Kristin Anderson, Ph.D., associate professor in the School of Public Health and Cancer Center member. "However, further studies are needed to examine the long-term health effects, on employees and patrons, of transient exposure to ETS."

Biomarkers were measured in urine samples from nonsmokers before and after a four-hour visit to a casino where smoking is allowed. The researchers tested for NNK through its urinary metabolites, NNAL and NNAL-Gluc, which are excellent biomarkers of human uptake of NNK. NNAL, like NNK, is a potent pulmonary (lung) carcinogen in rodents and a probable human carcinogen. The study found that, on average, the levels of NNK metabolites were increased two-fold (112 percent), demonstrating that exposure of nonsmokers to ETS in a public setting results in uptake of a tobacco-specific lung carcinogen.

Co-author Stephen Hecht, Ph.D., Cancer Center member and professor of Laboratory Medicine and Pathology in the Medical School, previously identified the lung carcinogen, NNK, and its metabolites NNAL and NNAL-Gluc, as tobacco-specific compounds. "There are no known sources of NNAL and NNAL-Gluc in human urine other than exposure to tobacco products," he said.

Eighteen individuals participated in the study, 14 females and 4 males. The average time spent at the casino was 4.25 hours. Participants reported that nearly all of their time was spent in the designated smoking areas. The nonsmoking area was contiguous with smoking areas. Before visiting the casino, levels of NNAL were below of the limit of detection in eleven participants. Three of these participants also had NNAL levels below the limit of detection in the after-visit samples; all others were in the detectable range.

The article is published in the journal Cancer Epidemiology Biomarkers and Prevention.


Story Source:

The above story is based on materials provided by University Of Minnesota. Note: Materials may be edited for content and length.


Cite This Page:

University Of Minnesota. "U Of MN Study First To Detect Tobacco-specific Carcinogens In Non-smokers In Public Setting." ScienceDaily. ScienceDaily, 26 December 2003. <www.sciencedaily.com/releases/2003/12/031223062804.htm>.
University Of Minnesota. (2003, December 26). U Of MN Study First To Detect Tobacco-specific Carcinogens In Non-smokers In Public Setting. ScienceDaily. Retrieved November 23, 2014 from www.sciencedaily.com/releases/2003/12/031223062804.htm
University Of Minnesota. "U Of MN Study First To Detect Tobacco-specific Carcinogens In Non-smokers In Public Setting." ScienceDaily. www.sciencedaily.com/releases/2003/12/031223062804.htm (accessed November 23, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Sunday, November 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola-Hit Sierra Leone's Late Cocoa Leaves Bitter Taste

Ebola-Hit Sierra Leone's Late Cocoa Leaves Bitter Taste

AFP (Nov. 23, 2014) The arable district of Kenema in Sierra Leone -- at the centre of the Ebola outbreak in May -- has been under quarantine for three months as the cocoa harvest comes in. Duration: 01:32 Video provided by AFP
Powered by NewsLook.com
Don't Fall For Flu Shot Myths

Don't Fall For Flu Shot Myths

Newsy (Nov. 23, 2014) Misconceptions abound when it comes to your annual flu shot. Medical experts say most people older than 6 months should get the shot. Video provided by Newsy
Powered by NewsLook.com
WFP: Ebola Risks Heightened Among Women Throughout Africa

WFP: Ebola Risks Heightened Among Women Throughout Africa

AFP (Nov. 21, 2014) Having children has always been a frightening prospect in Sierra Leone, the world's most dangerous place to give birth, but Ebola has presented an alarming new threat for expectant mothers. Duration: 00:37 Video provided by AFP
Powered by NewsLook.com
Could Your Genes Be The Reason You're Single?

Could Your Genes Be The Reason You're Single?

Newsy (Nov. 21, 2014) Researchers in Beijing discovered a gene called 5-HTA1, and carriers are reportedly 20 percent more likely to be single. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins