Featured Research

from universities, journals, and other organizations

University Of Cincinnati Researchers Discover Gene That Causes Heavy Metal Poisoning

Date:
February 21, 2005
Source:
University Of Cincinnati
Summary:
A team of researchers from the University of Cincinnati (UC) has identified the gene responsible for spreading the poisonous (toxic) effects of cadmium--a finding, say the researchers, that may one day lead to the prevention of cadmium toxicity in humans.

CINCINNATI -- A team of researchers from the University of Cincinnati (UC) has identified the gene responsible for spreading the poisonous (toxic) effects of cadmium--a finding, say the researchers, that may one day lead to the prevention of cadmium toxicity in humans.

Cadmium--a heavy metal suspected of causing human birth defects, lung cancer and testicular cancer--is found in cigarette smoke, some shellfish and seafood, soil and some plants. It is known to damage the human central nervous system, the kidneys, lungs and developing embryos.

The UC researchers, studying low doses of cadmium in mice, found that the gene Slc39a8 works to transport cadmium to the testes, causing tissue to die.

The study, led by Daniel W. Nebert, MD, professor in UC's Department of Environmental Health and researcher at the Center for Environmental Genetics, will appear in the March 1, 2005 edition of the Proceedings of the National Academy of Sciences (PNAS).

"We suspect that cadmium at higher doses could be transported to other regions of the body via the Slc39a8 gene or another gene in this family," says Dr. Nebert. "We know that humans carry the same gene and gene family. Thus, we have identified a target that could be used to prevent cadmium's toxic effects in human populations."

This is especially important, says Dr. Nebert, for many Third World countries. When populations are malnourished or have iron-deficient anemia, the damaging effects of cadmium increase dramatically.

Humans need certain essential metals--including zinc, calcium, magnesium, iron, copper, cobalt and manganese--for normal metabolism and biological processes.

Industrialization, however, has introduced many nonessential heavy metals, such as cadmium, lead, silver, mercury, nickel, arsenic and chromium into the environment.

In the 1920s, UC researchers determined that exposure to lead (a nonessential heavy metal) in gasoline resulted in birth defects, mental retardation, loss of balance and other brain, kidney, liver or lung damage. Since then, there have been many studies on heavy metal toxicity, but until now no study has determined how nonessential heavy metals cause toxicity in humans or other vertebrates.

"We believe that the Slc39a8 gene could be responsible for the transportation not only of cadmium, but also of other nonessential heavy metals such as lead, nickel and mercury," says Dr. Nebert. "Identification and characterization of this gene in mice is a significant breakthrough that will improve our understanding of how heavy metals actually cause toxicity and cancer in humans."

###

Co-authors include Timothy P. Dalton, PhD, Lei He, Bin Wang, Marian L. Miller, PhD, Li Jin, PhD, Xiaoqing Chang and C. Stuart Baxter, PhD, all of UC's Department of Environmental Health, and Keith Stringer, PhD, of UC's Department of Pathology and Laboratory Medicine. The research was funded by the National Institute of Environmental Health Sciences (NIEHS).


Story Source:

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


Cite This Page:

University Of Cincinnati. "University Of Cincinnati Researchers Discover Gene That Causes Heavy Metal Poisoning." ScienceDaily. ScienceDaily, 21 February 2005. <www.sciencedaily.com/releases/2005/02/050218132952.htm>.
University Of Cincinnati. (2005, February 21). University Of Cincinnati Researchers Discover Gene That Causes Heavy Metal Poisoning. ScienceDaily. Retrieved April 25, 2014 from www.sciencedaily.com/releases/2005/02/050218132952.htm
University Of Cincinnati. "University Of Cincinnati Researchers Discover Gene That Causes Heavy Metal Poisoning." ScienceDaily. www.sciencedaily.com/releases/2005/02/050218132952.htm (accessed April 25, 2014).

Share This



More Health & Medicine News

Friday, April 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Deadly Fungus Killing Bats, Spreading in US

Deadly Fungus Killing Bats, Spreading in US

AP (Apr. 24, 2014) A disease that has killed more than six million cave-dwelling bats in the United States is on the move and wildlife biologists are worried. White Nose Syndrome, discovered in New York in 2006, has now spread to 25 states. (April 24) Video provided by AP
Powered by NewsLook.com
Companies Ramp Up Wellness to Lower Health Costs

Companies Ramp Up Wellness to Lower Health Costs

AP (Apr. 24, 2014) That little voice telling you to exercise, get in shape and get healthy is probably coming from your boss. More companies are beefing up wellness programs to try and cut down their health care costs. (April 24) Video provided by AP
Powered by NewsLook.com
Blood From World's Oldest Woman Suggests Life Limit

Blood From World's Oldest Woman Suggests Life Limit

Newsy (Apr. 24, 2014) Scientists say for the extremely elderly, their stem cells might reach a state of exhaustion. This could limit one's life span. Video provided by Newsy
Powered by NewsLook.com
FDA Wants To Ban Sales Of E-Cigarettes To Minors

FDA Wants To Ban Sales Of E-Cigarettes To Minors

Newsy (Apr. 24, 2014) The Food and Drug Administration wants to crack down on the use of e-cigarettes, banning the sale of the product to minors. 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:
from the past week

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