HOME >> MEDICINE >> NEWS
Air pollution causes healthy blood vessels to constrict

DALLAS, March 12 For the first time researchers have shown that air pollution negatively affects the blood vessels of healthy humans, according to a study in todays rapid access issue of Circulation: Journal of the American Heart Association.

In the study, 25 healthy people inhaled elevated concentrations of fine particles plus ozone for two hours. After exposure, volunteers blood vessels constricted between 2 percent and 4 percent on average. Their vessels did not constrict when they were exposed to ozone-free and particle-free air.

We have a wealth of epidemiological data saying that air pollution is associated with adverse respiratory and cardiovascular outcomes, but there is still a lack of understanding as to how the association occurs physiologically. These findings suggest a possible reason why the rate of heart attacks and other cardiovascular events increases with exposure to air pollution for people with known heart and blood vessel disease, says Robert D. Brook, M.D., study co-author and assistant professor of internal medicine in the division of hypertension and vascular medicine program at the University of Michigan, Ann Arbor.

There have been some suggestions in previous studies that people with atherosclerosis tend to respond with greater-than-normal constriction, or narrowing of blood vessels, in response to certain hormones in the body. Could it be that their blood vessels also have enhanced constriction in response to air pollution? Future studies will be needed to answer that question, Brook says.

The researchers focused on ozone and fine particulate matter. Fine particles are those with a diameter of less than 2.5 micrometers. Fine particles are emitted from burning fossil fuels, mostly from car engine exhaust, power generation and many industrial processes. Ozone and additional particulate materials are created when the sun shines on these emissions.

In other research, exposure to fine particles has been
'"/>

Contact: Carole Bullock
carole.bullock@heart.org
214-706-1279
American Heart Association
11-Mar-2002


Page: 1 2 3

Related medicine news :

1. Air pollution thickens the blood
2. Satellite data reveal immense pollution pool over Bihar, India
3. Day-long drivers at risk of cardiovascular problems as a result of traffic pollution
4. Hong Kong think tank calls for pollution standards
5. Respiratory infections, not air pollution, pose winter health threat for children with asthma
6. Air pollution may cause and speed up artery disease
7. Global air pollution map produced by Envisats SCIAMACHY
8. UW to lead most comprehensive study of air pollution and cardiovascular disease
9. Air pollution especially harmful to lungs of obese children
10. PNNL develops mercury-absorbing pollution solution
11. Air pollution may significantly worsen respiratory allergies in individuals with genetic risk

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Air pollution causes healthy blood vessels constrict

(Date:8/3/2015)... ... ... Bayer has agreed to pay $56.9 million to set up a settlement program ... suffered an arterial blood clot including stroke and heart attack. The litigation involving product ... ongoing for well-over five years. In 2009, lawsuits filed against Bayer involving Yaz, Yasmin ...
(Date:8/3/2015)... ... 03, 2015 , ... Pitt Researchers to Monitor Resistance to ... School of Medicine are leading a five-year, $5 million initiative to monitor drug ... A cooperative agreement awarded by the U.S. Agency for International Development (USAID), will ...
(Date:8/3/2015)... ... 03, 2015 , ... A recent survey by the ... Hispanics believe people can positively affect their diabetes, few look beyond diet changes ... diet changes was important. Far fewer participants mentioned the need for exercise (30%), ...
(Date:8/3/2015)... ... August 03, 2015 , ... Dental practice in Los Angeles , Sunset ... people know that general health emergencies, such as broken arms or a heart attack, ... where to turn to during a dental emergency. This is important, because dental trauma ...
(Date:8/3/2015)... (PRWEB) , ... August 03, 2015 , ... The art ... experience. Learning from her grandmother’s side at a young age, Nasreen Zereshki was extremely ... has decided to share her cookbook Recipes from My Persian Kitchen with the world. ...
Breaking Medicine News(10 mins):Health News:Bayer Agrees To Settle Yaz Aterial Blood Clot Lawsuits 2Health News:$5M Effort to Guide Use of HIV Prevention Meds in Africa 2Health News:$5M Effort to Guide Use of HIV Prevention Meds in Africa 3Health News:$5M Effort to Guide Use of HIV Prevention Meds in Africa 4Health News:Hispanics More Likely to Struggle with Misinformation About Diabetes 2Health News:Hispanics More Likely to Struggle with Misinformation About Diabetes 3Health News:Hispanics More Likely to Struggle with Misinformation About Diabetes 4Health News:Los Angeles Dental Practice, Sunset Plaza Dental, Now Offers Emergency Dental Services 2Health News:Los Angeles Dental Practice, Sunset Plaza Dental, Now Offers Emergency Dental Services 3Health News:Persian Cuisine: Colorful and Extremely Healthy 2
(Date:8/3/2015)... , August 3, 2015 ... is expected to reach USD 24.7 billion by ... View Research Inc. Growing prevalence of neurological and ... equipments market over the forecast period. The presence ... and cryotherapy, advancement in the technologies coupled with ...
(Date:8/3/2015)... 3, 2015 Biosensors International Group, Ltd. ... BIOS.SI; SGX: B20), a developer, manufacturer and marketer ... for its first fiscal quarter ended 30 June ... and Recent Developments: , Biosensors ... cost structure, driven by lower operating expenses and ...
(Date:8/3/2015)... , Aug. 3, 2015  CytomX, a ... of cancer, today announced the promotion of several ... Debanjan Ray , who previously served as vice ... been promoted to senior vice president of corporate ... Ray held positions as the vice president of ...
Breaking Medicine Technology:Physiotherapy Equipments Market Worth $24.7 Billion By 2022: Grand View Research, Inc. 2Physiotherapy Equipments Market Worth $24.7 Billion By 2022: Grand View Research, Inc. 3Physiotherapy Equipments Market Worth $24.7 Billion By 2022: Grand View Research, Inc. 4Physiotherapy Equipments Market Worth $24.7 Billion By 2022: Grand View Research, Inc. 5Biosensors Reports Financial Results for the First Quarter of Fiscal Year 2016 2Biosensors Reports Financial Results for the First Quarter of Fiscal Year 2016 3Biosensors Reports Financial Results for the First Quarter of Fiscal Year 2016 4Biosensors Reports Financial Results for the First Quarter of Fiscal Year 2016 5Biosensors Reports Financial Results for the First Quarter of Fiscal Year 2016 6CytomX Announces Management Team Promotions 2CytomX Announces Management Team Promotions 3
Cached News: