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:12/2/2016)... ... December 02, 2016 , ... Dr. Raffi Hovsepian, a ... in the 2016 “Guide to America’s Top Plastic Surgeons” for seven consecutive years. ... their education, experience, and professional associations. , One the most frequently honored ...
(Date:12/2/2016)... ... December 02, 2016 , ... ... version of its SaaS LIMS, CloudLIMS Lite. CloudLIMS Lite helps biobanks, clinical, research ... labeling, storing, shipping and disposal. The new version is a faster and a ...
(Date:12/2/2016)... ... 02, 2016 , ... Sourced from the Isbre Springs beneath the 5,000 year ... natural purity of just 6 ppm TDS (Total Dissolved Solids) in addition to its ... available in several ShopRite and FoodTown stores in NJ and received rave comments from ...
(Date:12/2/2016)... (PRWEB) , ... December 02, 2016 , ... "Pro3rd Accents ... FCPX editors to create versatile lower third titles with just a few clicks of ... Accents Volume 2 includes 30 lower third animations. Choose from various styles with accented ...
(Date:12/2/2016)... PA (PRWEB) , ... December 02, 2016 , ... ... and pharmaceutical organizations to build intelligent, connected applications, was named the best Sales ... , The winner announcement was made today by the Software & Information ...
Breaking Medicine News(10 mins):
(Date:12/2/2016)... Dec. 1, 2016 The concept of rare diseases ... given to this sector has been taking shape in ... the political aspects and initiatives related to orphan medicinal products ... the level of member states individually. Many member states in ... the space of orphan medicinal products, the result of which ...
(Date:12/2/2016)... -- Around the corners of world, cancer has infused ... present over earth. Cancer has become one of those ... time this is because of the increasing incidence rates ... steady increase in global cancer incidence with its associated ... of treatment, there is increasing interest in this stringent ...
(Date:12/2/2016)... British Columbia , December 2, 2016 bioLytical ... bekannt gegeben, ab diesem Monat seinen  INSTI HIV-Selbsttests  in einer Version mit ... ... New: INSTI Self Test! ... , ,      (Photo: ...
Breaking Medicine Technology: