Allison Elliott-Shannon

By

College: Medicine

UK Researchers: Parkinson's Disease Risk Greater in Those Exposed to Trichloroethylene

Published: Nov 30, 2011

 

LEXINGTON, Ky. (Nov. 30, 2011) — A University of Kentucky faculty member is a contributing author on a new study demonstrating a connection between a common solvent chemical and Parkinson's disease. Dr. Franca Cambi of the UK Kentucky Neuroscience Institute collaborated with researchers from across the U.S. on a paper recently published in the Annals of Neurology.

The novel study looked at a cohort of human twins wherein one twin had been occupationally exposed to trichloroethylene (TCE) and other chemicals believed to be linked to development of Parkinson's.

 

TCE has been previously linked to Parkinson's disease through prior research by UK authors and others, including the 2008 paper, "Trichloroethylene: Parkinsonism and complex 1 mitochondrial neurotoxicity," and the 2010 paper, "Trichloroethylene induces dopaminergic neurodegeneration in Fisher 344 rats." The 2008 paper was based upon a study of factory workers in a facility using chemicals that have been linked to development of Parkinson's disease.

 

In the most recent paper, the authors demonstrated that in addition to TCE, increase in Parkinson's disease risk is also associated with exposure to percholorethylene (PERC) and carbon tetrachloride (CCI4).
 

Occupational or environmental exposure to TCE, PERC and CCI4 is common due to the extensive use of the chemicals in dry-cleaning solutions, adhesives, paints, and carpet cleaners. Despite the Food and Drug Administration (FDA) banning the use of TCE as a general anesthetic, skin disinfectant, and coffee decaffeinating agent in 1977, it is still widely used today as a degreasing agent. In the U.S., millions of pounds of TCE are still released into the environment each year and it is the most common organic contaminant found in ground water, detected in up to 30 percent of drinking water supplies in the country. 

 

The current epidemiological study, led by Drs. Samuel Goldman and Caroline Tanner of The Parkinson’s Institute in Sunnyvale, Ca., investigated exposure to TCE, PERC and CCI4 as they related to risk of developing Parkinson's disease. The team interviewed 99 twin pairs from the National Academy of Sciences/National Research Council World War II Veteran Twins Cohort in which one twin had Parkinson's and one didn’t, inquiring about lifetime occupations and hobbies. Lifetime exposures to six specific solvents previously linked to Parkinson's in medical literature — n-hexane, xylene, toluene, CCl4, TCE and PERC — were inferred for each job or hobby typically involving exposure to the chemicals.

 

While prior research has indicated a link between TCE exposure and Parkinson's disease, the current findings are the first to report a statistically significant association — a more than six-fold increased risk.  Researchers also found that exposure to PERC and CCI4 tended toward significant risk of developing the disease. 

 

This study focused on occupational exposures, but the solvents under investigation are pervasive in the environment. Lead author Goldman concluded: “Our findings, as well as prior case reports, suggest a lag time of up to 40 years between TCE exposure and onset of Parkinson's, providing a critical window of opportunity to potentially slow the disease process before clinical symptoms appear.”

 

The National Institute of Neurological Disorders and Stroke (NINDS) estimates that as many as 500,000 Americans have Parkinson's disease and more than 50,000 new cases are diagnosed annually.  While there is much debate regarding the causes of Parkinson's disease, studies suggest that genetic and environmental factors likely trigger the disease - which is characterized by symptoms such as limb tremors, slowed movement, muscle stiffness, and speech impairment.  Several studies have reported that exposure to solvents may increase risk of Parkinson's, but research assessing specific agents is limited.

 

 

MEDIA CONTACT: Allison Elliott, allison.elliott@uky.edu

annalsofneuro.jpg
August
 
 
 
 
 
1
Employee Educational Assistance Award
Landscape/Mindscape: Selections from the Wells Fargo Collection
Fri
2
Employee Educational Assistance Award
Landscape/Mindscape: Selections from the Wells Fargo Collection
Sat
3
Employee Educational Assistance Award
Landscape/Mindscape: Selections from the Wells Fargo Collection
Artful Sunday: Wrapped Art
Sun
4
Employee Educational Assistance Award
Mon
5
Employee Educational Assistance Award
Landscape/Mindscape: Selections from the Wells Fargo Collection
Tue
6
Employee Educational Assistance Award
Landscape/Mindscape: Selections from the Wells Fargo Collection
Get Moving - A Walking Group for Caregivers
Wed
7
Employee Educational Assistance Award
Landscape/Mindscape: Selections from the Wells Fargo Collection
Thu
8
Employee Educational Assistance Award
Landscape/Mindscape: Selections from the Wells Fargo Collection
Fri
9
Employee Educational Assistance Award
Landscape/Mindscape: Selections from the Wells Fargo Collection
Sat
10
Employee Educational Assistance Award
Landscape/Mindscape: Selections from the Wells Fargo Collection
Sun
11
Employee Educational Assistance Award
Mon
12
Employee Educational Assistance Award
Landscape/Mindscape: Selections from the Wells Fargo Collection
UK Working Moms Connection
Tue
13
Employee Educational Assistance Award
Landscape/Mindscape: Selections from the Wells Fargo Collection
Wed
14
Employee Educational Assistance Award
Landscape/Mindscape: Selections from the Wells Fargo Collection
Thu
15
Employee Educational Assistance Award
Landscape/Mindscape: Selections from the Wells Fargo Collection
Fri
16
Employee Educational Assistance Award
Landscape/Mindscape: Selections from the Wells Fargo Collection
Sat
17
Employee Educational Assistance Award
Landscape/Mindscape: Selections from the Wells Fargo Collection
Sun
18
Employee Educational Assistance Award
Mon
19
Employee Educational Assistance Award
Tue
20
Employee Educational Assistance Award
Chronic Disease Self-Management Program
Wed
21
Employee Educational Assistance Award
Thu
22
Employee Educational Assistance Award
Midnight Dodgeball Tournament
CARES First Year Focus Parent Meetings
CARES First Year Focus Parent Meetings
Parent and Families Reception
Residence Hall Floor Meeting
Off-campus Freshmen Check-in
K Team Meeting: K Week Kick-off
Death By Chocolate
Fri
23
Employee Educational Assistance Award
A Parent's Guide to Life after August 23
Campus Safety Information Session
Donut Avoid The Study
Common Cents: Money Management for College Students Session 1
See Blue...See Community
Succeeding in A Large Lecture Classroom
Horses, Bluegrass, Basketball, and More: Welcome to Kentucky
Success at Any Age: College Tips for Adult Learners
Write Right: Tips for Writing Well in College
Common Cents: Money Management for College Students Session 2
How to Graduate in Four Years
Parental Involvement in Fraternity and Sorority Life
Parents Watch for Warning Signs: Suicide Prevention for College Students
Preparing to be a Pre-Professional
Presentation U!: Where YOU are the Ultimate Presentation
Religious Life at UK
Successful Off-Campus Living
The Transfer Student Cruise: Navigating your way through UK
UK Parking & Transportation 101
You Heard It Here First: Tips From A Faculty Member
New Student Induction Ceremony
Minority Student Welcome
Transfer Student Cookout
K Team Meeting: K Week Overview
Men's Soccer vs. Georgia State
Big Blue U
Campus Ruckus
Campus Ruckus
Sat
24
Employee Educational Assistance Award
LNFS Presents: Jackass 3
LNFS Presents: Godzilla
Pedalpalooza
K Team Meeting: Lunch and Campus Tour
Center for Community Outreach: Do Good, Start Here.
UK Lex-Mart
Alternative Service Breaks: See the World, Change the World
From the Real World to the Amazing Race, Don't Wipeout: Your Advisor, Advising, and You
Blackboard Basics
Student Government Association Information Session
EMPOWER: Women’s Leadership Retreat Interest Session
Student Center Spectacular
Student Center Spectacular
Sun
25
Employee Educational Assistance Award
UK FUSION
UK Parking & Transportation 101
University of Kentucky Association for Transfer Students Interest Session
Candy, Condoms, Coffee
Cleaner, Healthier, Cheaper, Faster: Why Bicycling is the Best Way to Get Around Campus (and how to do it safely)
Working on Campus
K Team Meeting: Dinner with your K Team
Meijer Mania
Mon
26
Employee Educational Assistance Award
Last Day to Drop a Course with 100% Refund
Chem at UK Cafe-N-OJ with the Student American Chemical Society
Coffee (or Coke), Cookies, & Communication!: Come see blue. at Presentation U!
Don't Blow Yourself Up: Surviving Chemistry
Fraternity Recruitment Info Session
OMG! Did I Just E-Mail That to My Professor???
Surviving Your First Year and Beyond: Strategies To Do Well in Your Classes
Sustainable UK: Exploring Environmental Programs in the College of Agriculture, Food, and Environment (CAFE)
A User Guide for Your Mathematics Class
Discover the UK Art Museum
K Team Meeting: Common Reading Experience Discussion
Common Reading Introduction for International Students
Transfer Student Meet and Greet
We Are UK
Rec 'N Roll 2014
Big Blue Bingo Night
Mic Check
Tue
27
Employee Educational Assistance Award
Fraternity Recruitment Info Session
LNFS Presents: Jurassic Park
First Day of Classes
Campus Outreach
Opening Act: The Amazing Spider-Man 2
Wed
28
Employee Educational Assistance Award
Internship Info Session
LNFS Presents: Her
LNFS Presents: Captain America: The Winter Soldier
Student Involvement Fair
OrgSync Info session
LGBTQ* Welcome Back
Dive Into Diversity!
Residence Hall Floor Meetings
Thu
29
Employee Educational Assistance Award
Sea of Blue
One Last Beach Bash: RSA Block Party
LNFS Presents: Team America: World Police
Pills and Pizza
K Week Event: Pills and Pizza
Kentucky Volleyball vs. Wichita State
Kentucky Women's Soccer vs. Francis Marion
Fri
30
Employee Educational Assistance Award
LNFS Presents: Neighbors
The Tailgate "Kick-Off"
Kentucky Volleyball vs. Butler
Kentucky Football vs. UT-Martin
Kentucky Volleyball vs. Virginia Tech
Sat
31
Employee Educational Assistance Award
Kentucky Women's Soccer vs. Ohio
Men's Soccer vs. Belmont
Sun
 
 
 
 
 
 
Reset Page