HOME >> BIOLOGY >> NEWS
Tree rings show elevated tungsten coincides with Nevada leukemia cluster

Tungsten began increasing in trees in Fallon, Nev. several years before the town's rise in childhood leukemia cases, according to a new research report.

The amount of tungsten in tree rings from Fallon quadrupled between 1990 and 2002, whereas the amount in tree rings from nearby towns remained the same, according to a research team led by Paul R. Sheppard of The University of Arizona's Laboratory of Tree-Ring Research.

This is the first study that has examined changes in levels of heavy metals in Fallon over time.

"Trees take up metals from the environment and those metals show up in the tree rings. By analyzing chemicals in tree rings, we can look back in time years, and even decades," said Sheppard, a UA assistant professor of dendrochronology.

"Tree ring values for the early 1990s for tungsten are roughly equivalent to nearby towns, but go up in Fallon in the mid-1990s while staying the same in other towns," he said.

Tungsten levels in Fallon trees began increasing in 1994, while levels in neighboring towns remained the same. Since 1997, 17 cases of childhood leukemia have been diagnosed in children who lived in the Fallon area for some time prior to diagnosis. Fallon's high incidence of leukemia has been acknowledged as a leukemia cluster by the Nevada State Health Division. (http://health.nv.gov/index.php?option=com_content&task=view&id=356&Itemid=595 )

The tree-ring study by Sheppard and his co-authors Robert J. Speakman of the Smithsonian Institution in Suitland, Md., Dr. Gary Ridenour of Fallon and Mark L. Witten, a UA research professor of pediatrics, is in the May 2007 issue of Environmental Health Perspectives.

A list of funding sources and the complete citation for the article is at the bottom of this release.

In a 2003 U.S. Health and Human Services report investigating possibl
'"/>

Contact: Mari N. Jensen
mnjensen@email.arizona.edu
520-626-9635
University of Arizona
30-Apr-2007


Page: 1 2 3 4

Related biology news :

1. MIT study: Maturity brings richer memories
2. Variant CJD -- Prion amplification breakthrough brings new insights and hopes for a blood test
3. Extracting eggs from pre-pubertal cancer patients brings hope for future fertility
4. Homing pigeons get their bearings from their beaks
5. Gold nanorods assemble themselves into rings
6. Dilbert of academia brings humor to talk at UH
7. Disorderly protein brings order to cell division
8. From hot springs to rice farms, scientists reveal new insights into the secret lives of archaea
9. $1 million Myers Fellowship brings US research techniques to Melbourne
10. Flying in tune: Buzz brings mosquito pairs together
11. Watching rocks grow: Theory explains landscape of geothermal springs

Post Your Comments:
(Date:8/21/2014)... Carolina State University have developed a novel and versatile ... applications for creating new materials as well as for ... technique allows us to model much larger and more ... quickly," says Nan Li, lead author of a paper ... State,s Department of Materials Science and Engineering. "This is ...
(Date:8/20/2014)... 2014 George E. Fox, a John and Rebecca Moores ... (UH), was named a fellow in the International Society for ... Fox is one of four members two from the ... as fellows in 2014. Fellows are elected every three years, ... 500 members from more than 20 countries, the ISSOL includes ...
(Date:8/20/2014)... SALT LAKE CITY Researchers at Huntsman Cancer Institute (HCI) ... mutated forms of the gene that encodes BCR-ABL, the ... (CML). According to the American Cancer Society, nearly 6,000 ... , Drugs already in use, called tyrosine kinase inhibitors ... disease. They do not cure CML but control it ...
Breaking Biology News(10 mins):Researchers develop models to study polyelectrolytes, including DNA and RNA 2UH professor named fellow by International Astrobiology Society 2Blueprint for next generation of chronic myeloid leukemia treatment 2
(Date:8/21/2014)... Louis, MO (PRWEB) August 21, 2014 ... full service biopharmaceutical contract development and manufacturing organization ... by Progenics Pharmaceuticals, Inc., an oncology company focused ... and treating cancer, to manufacture the anti-prostate specific ... PSMA ADC product candidate. Under the agreement ...
(Date:8/20/2014)... analysis of patented university inventions licensed to biotechnology ... to commercialization. To open these roadblocks, the researchers ... during the discovery stage could lead to faster ... frequently derived from discoveries made in university laboratories ... known during clinical trials, which have a high ...
(Date:8/20/2014)... (PRWEB) August 20, 2014 High ... and apply the most complete climate and Earth ... demanding climate change issues. , Eight national laboratories, ... with the National Center for Atmospheric Research, four ... new effort. Other participating national laboratories include Argonne, ...
(Date:8/20/2014)... Not long ago, it was more ... performed late in the development cycle – even after ... trends suggest that, like many things GxP, expectations for ... years, multiple drug sponsors have been required by authorities ... during phase I/II. It’s not only clinical trial material ...
Breaking Biology Technology:Gallus Enters Agreement with Progenics Pharmaceuticals, Inc. for Manufacture of Anti-PSMA Monoclonal Antibody 2Gallus Enters Agreement with Progenics Pharmaceuticals, Inc. for Manufacture of Anti-PSMA Monoclonal Antibody 3Early bottlenecks in developing biopharmaceutical products delay commercialization 2Early bottlenecks in developing biopharmaceutical products delay commercialization 3New Project Is the ACME of Addressing Climate Change 2New Project Is the ACME of Addressing Climate Change 3Are Extractable and Leachables going Phase-Appropriate? New Webinar Hosted by Xtalks 2
Cached News: