HOME >> MEDICINE >> NEWS
Hexavalent chromium in drinking water causes cancer in lab animals

Researchers announced today that there is strong evidence a chemical referred to as hexavalent chromium, or chromium 6, causes cancer in laboratory animals when it is consumed in drinking water. The two-year study conducted by the National Toxicology Program (NTP) shows that animals given hexavalent chromium developed malignant tumors.

"Previous studies have shown that hexavalent chromium causes lung cancer in humans in certain occupational settings as a result of inhalation exposure," said Michelle Hooth, Ph.D., NTP study scientist for the technical report. "We now know that it can also cause cancer in animals when administered orally."

The study findings were announced at the National Institute of Environmental Health Sciences (NIEHS) after the NTP Board of Scientific Counselors Technical Reports Review Subcommittee completed its independent peer review of the sodium dichromate dihydrate research report. Sodium dichromate dihydrate is an inorganic compound containing hexavalent chromium that was used in the NTP studies. The NTP is located at the NIEHS, part of the National Institutes of Health.

Hexavalent chromium compounds are often used in electroplating, leather tanning, and textile manufacturing and have been found in some drinking water sources.

Male and female rats and mice were given four different doses of sodium dichromate dihydrate in their drinking water ranging from 14.3 mg/l to 516 mg/l for two years. The lowest doses given to the animals in the study were ten times higher than what humans could consume from the most highly contaminated water sources identified in California.

The researchers report finding significant increases in tumors at sites where tumors are rarely seen in laboratory animals. Male and female rats had malignant tumors in the oral cavity. The studies conducted in mice found increases in the number of benign and malignant tumors in the small intestine, which increased with
'"/>

Contact: Robin Mackar
rmackar@niehs.nih.gov
919-541-0073
NIH/National Institute of Environmental Health Sciences
16-May-2007


Page: 1 2

Related medicine news :

1. Binge drinking leads to neurocognitive deficits among college students
2. Moderate drinking lowers womens risk of heart attack
3. Curb the pocket money, curb the problem drinking
4. RAND study finds alcohol advertising and marketing associated with adolescent drinking
5. Binge drinking, gender and clinical depression
6. NYU Child Study Center expert offers tips to help curb teen binge drinking
7. Brains can recover from alcoholic damage but patients should stop drinking as soon as possible
8. Heavy, chronic drinking can cause significant hippocampal tissue loss
9. Friends have greater sway on college students beliefs on drinking behavior
10. Binge-drinking teenagers at greater risk of violence
11. Raising awareness of global drinking water crisis

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:12/2/2016)... ... December 02, 2016 , ... Yisrayl Hawkins, at The House ... this current generation fits into Bible Prophecy. Yisrayl says this generation, known as the ... this conclusion, showing how the details line up exactly with Bible Prophecy – a ...
(Date:12/2/2016)... ... December 02, 2016 , ... ... to needy individuals and families from eight different sites throughout Miami-Dade and Broward ... Over 1,000 volunteers worked very hard on Thanksgiving morning by putting together individual ...
(Date:12/2/2016)... ... December 02, 2016 , ... ‘Tis the season for ... $1,000 each from the National Family Partnership and the Drug Enforcement Administration as part ... their homes and the 10 winning schools who decorated their campuses with this year’s ...
(Date:11/30/2016)... ... November 30, 2016 , ... "I hate when the ... while brushing my teeth," said an inventor from Bridgewater, N.J. "I thought that there ... this handy device." , He developed the patent-pending DEFLECTOR to prevent saliva and toothpaste ...
(Date:11/30/2016)... ... November 30, 2016 , ... Center For Discovery, ... the opening of a new residential mental health treatment program in Chino Hills, ... such as severe anxiety, depression, bi-polar disorder, and other related issues. , Center ...
Breaking Medicine News(10 mins):
(Date:12/2/2016)... 2, 2016 On Thursday, December ... excellence in research, development and innovation in the biopharmaceutical ... was held in the presence of Sergey Tsyb, Vice ... Russian Federation , Natalia Sanina, First Vice Chairman ... , Head of Roszdravnadzor, National Service of Control in ...
(Date:12/2/2016)... RICHMOND, British Columbia , December 2, 2016 ... Produkt, den INSTI HIV-Selbsttest, bei den Mitgliedern des Apothekenbundes von Kenia eingeführt. ... ... INSTI HIV Self Test! (PRNewsFoto/bioLytical Laboratories) ...      (Photo: http://photos.prnewswire.com/prnh/20161201/444905 ) ...
(Date:12/2/2016)... 2016 Lianluo Smart Limited (Nasdaq: ... which develops, markets and sells medical devices and ... and international markets, recently attended the ... New Progress Forum, co-hosted by the Institute of ... , Guangdong Provincial People,s Hospital and Cardiology Department ...
Breaking Medicine Technology:
Cached News: