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:6/28/2017)... Clara, CA (PRWEB) , ... June 28, 2017 , ... ... hosting a free AFM Luncheon for all SEMICONWest attendees and Park customers ... luncheon will feature talks from Dr. Sang-il Park, Chairman & CEO of Park Systems, ...
(Date:6/28/2017)... , ... June 28, 2017 , ... ... County and the surrounding regions access to insurance assistance and financial planning services, ... 25: Ministries to assist families in the region facing financial crisis. , Matthew ...
(Date:6/27/2017)... ... June 27, 2017 , ... Excel ... Mike Finnegan to the position of Executive Vice President, Sales and Marketing. Finnegan ... technology, telehealth and medical device sales leadership. He has received industry recognition for ...
(Date:6/27/2017)... ... 27, 2017 , ... Harbour , a DAO (decentralized autonomous organization) that ... has released their technical specifications . , 2017 has seen an explosion of ... for determining which offerings will garner the greatest ROI. Dean Eigenmann, Co-founder and CEO ...
(Date:6/27/2017)... ... June 27, 2017 , ... ... SUNucate efforts, Louisiana became the sixth state to pass legislation which ensures ... John Bel Edwards’ signature, Louisiana joins the states of Alabama, Arizona, Florida, Utah ...
Breaking Medicine News(10 mins):
(Date:5/23/2017)...  Leaf Healthcare, recognized for developing one of ... ulcer prevention, will unveil its comprehensive mobility monitoring ... Nurses, National Teaching Institute and Critical Care Exposition ... Patient Monitoring System is the first mobility monitoring ... system seamlessly tracks patient movement throughout the mobility ...
(Date:5/22/2017)... May 22, 2017  As the specialty pharmacy ... continue to make the revolutionary shift from volume-based ... for ensuring positive patient outcomes and shaping the ... shifting focus away from clinical trials and toward ... long-term specialty drug therapy utilization in precise patient ...
(Date:5/18/2017)... , May 17, 2017  Bayer announced today that ... will be presented at the 53 rd Annual ... taking place June 2-6 in Chicago ... ASCO span prostate, colorectal, liver and thyroid cancers, as ... the Phase II CHRONOS-1 trial of copanlisib in patients ...
Breaking Medicine Technology: