Navigation Links
Smallest Air Pollution Particles Hurt Heart Most
Date:1/19/2008

Cause plaque build-up in arteries, negate effects of "good" cholesterol

SATURDAY, Jan. 19 (HealthDay News) -- The tiniest bits of air pollution from your vehicle's exhaust may be the most dangerous to your heart's health, suggests a new U.S. study.

Particles that are about one-thousandth the size of a human hair, cause plaque build-up in the arteries, according to a University of California, Los Angeles-led study. This condition, called atherosclerosis, can lead to heart attack and stroke.

These particles also contribute to hardening of the arteries by shutting down the protective qualities of so-called "good" high-density lipoprotein (HDL) cholesterol, according to the study, which appears in the Jan. 17 online edition of Circulation Research.

Over five weeks, researchers exposed mice with high cholesterol to larger fine pollution particles (2.5 micrometers in size) or ultrafine particles (less than 0.18 micrometers), then compared them to mice exposed to filtered air. The mice exposed to ultrafine particles had 25 percent more arterial plaque development than the mice exposed to fine particles and 55 percent more than mice that breathed filtered air.

"This suggests that ultrafine particles are the most toxic air pollutants in promoting events leading to cardiovascular disease," study author Dr. Jesus Araujo, an assistant professor of medicine and director of environmental cardiology at UCLA's David Geffen School of Medicine, said in a prepared statement.

While the U.S. Environmental Protection Agency regulates fine pollution particles, it doesn't monitor ultrafine -- or nano-sized -- particles, according to background information in a news release about the study.

"We hope our findings offer insight into the impact of nano-sized air pollutant particles and help explore ways for stricter air quality regulatory guidelines," principal investigator Dr. Andre Nel, UCLA's chief of nanomedicine, said in a prepared statement.

More information

The American Academy of Family Physicians has more about the possible health effects of air pollution.



-- Robert Preidt



SOURCE: University of California, Los Angeles news release, Jan. 17, 2008


'/>"/>
Copyright©2008 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. VIDEO from Medialink and Siemens: Worlds Smallest Ultrasound Package Launches in the U.S.
2. Good Imaging Now Comes in the Worlds Smallest Ultrasound Package
3. Medicare Offers Smallest Rise in Premiums in 6 Years
4. Pollution shrinks fetus size: Brisbane study finds
5. Traffic Pollution Hurts Asthmatic Kids Lungs
6. EPA Plan to Evade Required Cuts in Mercury Pollution Challenged in Court by States, Tribes, Health and Environmental Groups
7. Los Angeles Port Pollution, Intl Trade & Goods Movement Conference This Weekend
8. Link Between Air Pollution, Stroke Gets Clearer
9. High pollution linked to poor lung function growth in children in Mexico City
10. Air pollution linked to cardiovascular risk indices in healthy young adults
11. Novel 3-D cell culture model shows selective tumour uptake of nanoparticles
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Smallest Air Pollution Particles Hurt Heart Most 
(Date:6/27/2016)... ... June 27, 2016 , ... "FCPX editors can now ... of Final Cut Pro X," said Christina Austin - CEO of Pixel Film Studios. ... Final Cut Pro X users can now reveal the media of their split ...
(Date:6/27/2016)... , ... June 27, 2016 ... ... the patient payment industry today announced its strategic partnership with Connance, a ... workflows. , The two companies’ proven, proprietary technology combine to provide health ...
(Date:6/27/2016)... Park, KS (PRWEB) , ... June 27, 2016 , ... ... in retailers of Eyeglasses . , Millions of individuals in the United States ... eyeglasses have become a way to both correct vision and make a fashion statement. ...
(Date:6/26/2016)... ... 2016 , ... On June 10-11, 2016, A Forever Recovery, a holistic treatment ... Longest Breakfast Table in Battle Creek, MI, where the rehabilitation facility is located. This ... of the world’s leading providers of cereal and other breakfast foods. Its residents often ...
(Date:6/26/2016)... ... June 26, 2016 , ... PawPaws brand pet supplements ... was developed to enhance the health of felines. The formula is all-natural and is ... herbs in the PawPaws Cat Kidney Support Supplement Soft Chews are Astragalus ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... OAKLAND, N.J. , June 24, 2016 /PRNewswire/ ... in the design, development and manufacturing of collagen ... and regeneration announced today that Bill Messer ... Sales and Marketing to further leverage the growing ... surgery medical devices. Bill joins the ...
(Date:6/24/2016)... Va. , June 24, 2016 The ... set of recommendations that would allow biopharmaceutical ... (HCEI) with entities that make formulary and coverage decisions, ... the "value" of new medicines. The recommendations ... does not appear on the drug label, a prohibition ...
(Date:6/24/2016)... , June 24, 2016   Pulmatrix, Inc ., ... developing innovative inhaled drugs, announced today that it was ... Investments reconstituted its comprehensive set of U.S. and ... "This is an important milestone for Pulmatrix," said Chief ... shareholder awareness of our progress in developing drugs for ...
Breaking Medicine Technology: