Featured Research

from universities, journals, and other organizations

Metformin may prevent lung cancer in smokers, early research suggests

Date:
April 20, 2010
Source:
American Association for Cancer Research
Summary:
Metformin, a mainstay of treatment for patients with type 2 diabetes, may soon play a role in lung cancer prevention if early laboratory research is confirmed in clinical trials.

Metformin, a mainstay of treatment for patients with type 2 diabetes, may soon play a role in lung cancer prevention if early laboratory research presented at the AACR 101st Annual Meeting 2010 is confirmed in clinical trials.

Related Articles


Metformin decreases levels of insulin-like growth factor-1 (IGF-1) and circulating insulin, which is important in patients with type 2 diabetes. However, emerging research suggests metformin may inhibit tumor growth as well.

"This well tolerated, FDA-approved diabetes drug was able to prevent tobacco-carcinogen induced lung tumors," said Phillip A. Dennis, M.D., Ph.D., senior investigator in the medical oncology branch of the National Cancer Institute.

For the current study, Dennis and colleagues treated mice with metformin for 13 weeks following exposure to a nicotine-derived nitrosamine (NNK), which is the most prevalent carcinogen in tobacco and a known promoter of lung tumorigenesis.

When given orally, metformin was well tolerated and reduced tumor burden by 40 percent to 50 percent. Dennis said levels of metformin reached in mice are readily achievable in humans.

Dennis and colleagues further evaluated the effects of metformin on a series of biomarkers for lung tumorigenesis and found that it inhibited mammalian target of rapamycin (mTOR), which promotes lung tumor growth, by decreasing levels of circulating insulin and IGF-1. This effect was even more profound when metformin was administered to mice by injection, which reduced lung tumor burden by 72 percent.


Story Source:

The above story is based on materials provided by American Association for Cancer Research. Note: Materials may be edited for content and length.


Cite This Page:

American Association for Cancer Research. "Metformin may prevent lung cancer in smokers, early research suggests." ScienceDaily. ScienceDaily, 20 April 2010. <www.sciencedaily.com/releases/2010/04/100419162115.htm>.
American Association for Cancer Research. (2010, April 20). Metformin may prevent lung cancer in smokers, early research suggests. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2010/04/100419162115.htm
American Association for Cancer Research. "Metformin may prevent lung cancer in smokers, early research suggests." ScienceDaily. www.sciencedaily.com/releases/2010/04/100419162115.htm (accessed December 20, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Saturday, December 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Best Tips to Curb Holiday Carbs

The Best Tips to Curb Holiday Carbs

Buzz60 (Dec. 19, 2014) It's hard to resist those delicious but fattening carbs we all crave during the winter months, but there are some ways to stay satisfied without consuming the extra calories. Vanessa Freeman (@VanessaFreeTV) has the details. Video provided by Buzz60
Powered by NewsLook.com
Sierra Leone Bikers Spread the Message to Fight Ebola

Sierra Leone Bikers Spread the Message to Fight Ebola

AFP (Dec. 19, 2014) More than 100 motorcyclists hit the road to spread awareness messages about Ebola. Nearly 7,000 people have now died from the virus, almost all of them in west Africa, according to the World Health Organization. Video provided by AFP
Powered by NewsLook.com
Researchers Test Colombian Village With High Alzheimer's Rates

Researchers Test Colombian Village With High Alzheimer's Rates

AFP (Dec. 19, 2014) In Yarumal, a village in N. Colombia, Alzheimer's has ravaged a disproportionately large number of families. A genetic "curse" that may pave the way for research on how to treat the disease that claims a new victim every four seconds. Duration: 02:42 Video provided by AFP
Powered by NewsLook.com
Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Buzz60 (Dec. 19, 2014) A double-amputee makes history by becoming the first person to wear and operate two prosthetic arms using only his mind. Jen Markham has the story. Video provided by Buzz60
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