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:4/24/2014)... and the University of North Carolina at Chapel Hill ... identify arterial plaque that is at high risk of ... At issue is the plaque that builds up in ... deemed "vulnerable," meaning that they are more likely to ... or stroke. , "Existing state-of-the-art technologies are capable of ...
(Date:4/24/2014)... turtle is the largest river turtle in North America, ... almost a century. Now researchers from Florida and the ... one species but three. , Examining museum specimens ... in this ancient reptile. , Once heavily hunted for ... of Campbell,s Turtle Soup in the 1960s the ...
(Date:4/23/2014)... data shows Africa,s Congo rainforest, the second-largest tropical rainforest ... greenness over the past decade. , The study, led ... of New York, shows between 2000 and 2012 the ... intensified. The research, published Wednesday in Nature , ... explore the effects of long-term drought on the Congo ...
Breaking Biology News(10 mins):New ultrasound device may add in detecting risk for heart attack, stroke 2Two new US turtle species described 2Two new US turtle species described 3NASA satellites show drought may take toll on Congo rainforest 2NASA satellites show drought may take toll on Congo rainforest 3
(Date:1/15/2014)... 15, 2014 2013 was a banner ... State Technologies®. They saw continued independent research led by ... were awarded a $1 million grant from the Susanne ... and Behavior” a peer reviewed journal, Amy Grant highlighted ...
(Date:1/14/2014)... Date: Friday, April 11, 2014 , Time: 6 ... Almshouse Road, Warrington, Pa. , Details: The Hepatitis ... finding a cure for hepatitis B and improving the quality ... Crystal Ball on Friday, April 11 at Warrington Country Club ...
(Date:1/14/2014)... pet owners drew up their lists of New Year,s resolutions for ... of my furry companion." Nowadays there are pet salons, dog and ... take the little canine or feline darlings along wherever mommy or ... pricey toys at the pet store. But anyone who has ever ...
(Date:1/14/2014)... MA (PRWEB) January 14, 2014 iLab Solutions, ... Detwiler as the new Director of Product Strategy. In this ... well as iLab sub-teams to guide in the development of ... iLab provides the maximum possible benefit to the scientific community ...
Breaking Biology Technology:Dynamic Innovative Technology Showcased at Scottsdale Company’s Open House 2Dynamic Innovative Technology Showcased at Scottsdale Company’s Open House 3Hepatitis B Foundation to Host Annual Crystal Ball Gala 2New Year's Resolution: Give Pets the Gift of Top-Notch Health Care 2iLab Solutions Announces Michelle Detwiler as the New Director of Product Strategy 2
Cached News: