HOME >> BIOLOGY >> NEWS
Lead exposure leads to brain cell loss and damage years later

ST. PAUL, Minn. Eighteen years later, people who worked with lead have significant loss of brain cells and damage to brain tissue, according to a new study published in the May 23, 2006, issue of Neurology, the scientific journal of the American Academy of Neurology.

The study examined 532 former employees of a chemical manufacturing plant who had not been exposed to lead for an average of 18 years. The workers had worked at the plant for an average of more than eight years.

The researchers measured the amount of lead accumulated in the workers' bones and used MRI scans to measure the workers' brain volumes and to look for white matter lesions, or small areas of damage in the brain tissue.

The higher the workers' lead levels were, the more likely they were to have smaller brain volumes and greater amounts of brain damage. A total of 36 percent of the participants had white matter lesions. Those with the highest levels of lead were more than twice as likely to have brain damage as those with the lowest lead levels. Those with the highest levels of lead had brain volumes 1.1 percent smaller than those with the lowest lead levels.

"The effect of the lead exposure was equivalent to what would be expected for five years of aging,"said study author Walter F. Stewart, PhD, of the Center for Health Research of the Geisinger Health System in Danville, PA, and the Johns Hopkins Bloomberg School of Public Health in Baltimore, MD.

Stewart said the results confirm earlier findings in this same population that people with occupational lead exposure experience declines in their thinking and memory skills years after their exposure. "The effect of lead on the brain is progressive," Stewart said. "These effects are the result of persistent changes in the structure of the brain, not short-term changes in the brain's neurochemistry."

The findings raise new questions, according to Andrew S. Rowland, PhD, of the University of New Mex
'"/>

Contact: Marilee Tuite
mtuite@aan.com
651-695-2789
American Academy of Neurology
22-May-2006


Page: 1 2

Related biology news :

1. Reading ability protects brain from lead exposure
2. Prenatal alcohol exposure alters brain activity in the frontal-striatal areas
3. Early environmental exposure may accelerate age-related neurodegeneration
4. Lung and bladder cancer deaths continue decades after arsenic exposure
5. Pregnant moms exposure to flu vaccine kick-starts fetal immune system
6. Study confirms the risk of exposure to secondhand tobacco smoke outdoors
7. Prenatal nicotine exposure can lead to cardiac function reprogramming in adult offspring
8. Early exposure to indoor fungus molecules may protect infants against future allergies
9. New methods and tools needed to measure exposure to airborne nanomaterials
10. Genomic test could help detect radioactivity exposure from terrorist attacks
11. Prenatal exposure to glucocorticoids has long-term deleterious effects on newborns

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


(Date:5/16/2017)... -- Veratad Technologies, LLC ( www.veratad.com ), an innovative and ... solutions, announced today they will participate as a sponsor ... May 17, 2017, in Washington D.C.,s ... Identity impacts the lives of billions of ... digital world, defining identity is critical to nearly every ...
(Date:4/19/2017)... York , April 19, 2017 ... as its vendor landscape is marked by the presence ... market is however held by five major players - ... Together these companies accounted for nearly 61% of the ... the leading companies in the global military biometrics market ...
(Date:4/13/2017)... 2017 According to a new market research report ... Identity Administration, and Authorization), Service, Authentication Type, Deployment Mode, Vertical, and Region ... expected to grow from USD 14.30 Billion in 2017 to USD 31.75 ... ... MarketsandMarkets Logo ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... CA (PRWEB) , ... October 11, 2017 , ... ... upregulate any gene in its endogenous context, enabling overexpression experiments and avoiding the ... system with small RNA guides is transformative for performing systematic gain-of-function studies. ...
(Date:10/11/2017)... ... October 11, 2017 , ... ComplianceOnline’s Medical Device Summit is back for ... June 2018 in San Francisco, CA. The Summit brings together current and former FDA ... board directors and government officials from around the world to address key issues in ...
(Date:10/11/2017)... INDIANAPOLIS , Oct. 11, 2017  VMS BioMarketing, a ... of a nationwide oncology Clinical Nurse Educator (CNE) network, which ... growing need for communication among health care professionals to enhance ... physicians, nurses, office staff, and other health care professionals to ... for breast cancer. ...
(Date:10/11/2017)... ... ... Disappearing forests and increased emissions are the main causes of the evolving ... those living in larger cities are affected by air pollution related diseases. , That ... countries globally - decided to take action. , “I knew I had to take ...
Breaking Biology Technology:
Cached News: