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:4/5/2017)... , April 5, 2017 Today HYPR ... that the server component of the HYPR platform is ... providing the end-to-end security architecture that empowers biometric authentication ... HYPR has already secured over 15 million users across ... manufacturers of connected home product suites and physical access ...
(Date:3/30/2017)...  On April 6-7, 2017, Sequencing.com will host the ... hackathon at Microsoft,s headquarters in Redmond, Washington ... developing health and wellness apps that provide a unique, ... is the first hackathon for personal genomics and ... in the genomics, tech and health industries are sending ...
(Date:3/28/2017)... India , March 28, 2017 ... IP, Biometrics), Hardware (Camera, Monitors, Servers, Storage Devices), Software ... Vertical, and Region - Global Forecast to 2022", published ... Billion in 2016 and is projected to reach USD ... between 2017 and 2022. The base year considered for ...
Breaking Biology News(10 mins):
(Date:4/24/2017)... April 24, 2017  Dante Labs announced today the offer ... 850 (ca. $900). While American individuals have been able to ... Europeans can access WGS below EUR 1,000. The ... leveraging genetic information to make informed decisions about disease monitoring, ... ...
(Date:4/21/2017)... (PRWEB) , ... April 21, 2017 , ... Having worked ... a year, Formaspace is pleased to introduce it to top lab design architects from ... CEO Jeff Turk and VP of Industrial Design and Engineering Greg Casey will be ...
(Date:4/21/2017)... ... April 21, 2017 , ... The impressively ... focus of researchers, engineers, product developers, and industry suppliers gathered last week for ... SPIE, the international society for optics and photonics , the event drew ...
(Date:4/21/2017)... ... April 21, 2017 , ... Frederick Innovative Technology Center, Inc. ... bio and technology start-ups, is hosting “Celebration Friday” (a festive gathering highlighting client ... with libations and networking at 3:30 p.m. at FITCI’s 4539 Metropolitan Court location, ...
Breaking Biology Technology:
Cached News: