Navigation Links
Inhaling a Heart Attack: How Air Pollution Can Cause Heart Disease
Date:9/8/2009

University of Michigan tests show short-term exposure to fine particle air pollution can drive up high blood pressure, raise risk of heart attack

ANN ARBOR, Mich., Sept. 8 /PRNewswire-USNewswire/ -- It's well known that measures such as exercise, a healthy diet and not smoking can help reduce high blood pressure, but researchers at the University of Michigan Health System have determined the very air we breathe can be an invisible catalyst to heart disease.

Inhaling air pollution over just two hours caused a significant increase in diastolic blood pressure, the lower number on blood pressure readings, according to new U-M research.

The study findings appear in the current issue of Hypertension, a publication of the American Heart Association.

Nearly one in three Americans suffer from hypertension, a significant health problem that can lead to heart attack, heart failure, stroke, and other life-threatening problems.

"Although this increase in diastolic blood pressure may pose little health risk to healthy people, in people with underlying coronary artery disease this small increase may actually be able to a trigger heart attack or stroke," says Robert D. Brook, M.D., lead author and vascular medicine physician at the U-M Cardiovascular Center.

In the study, researchers hoped to identify which air pollutants are harmful and how the pollutants work to damage the cardiovascular system.

Eighty-three people in Ann Arbor and Toronto were involved in testing and breathed air pollution, concentrated by a mobile air quality research facility, that was similar to what would be found in an urban environment near a roadway.

"We looked at their blood vessels and then their responses before and after breathing high levels of air pollution," explains Robert Bard, M.S., overall research project manager.

Ozone gases, a well-known component of air pollution, were not the biggest culprit. Rather, small microscopic particles about a 10th of the diameter of a human hair caused the rise in blood pressure and impaired blood vessel function, tests showed. The blood pressure increase was rapid and occurred within two hours, while the impairment in blood vessel function occurred later but lasted as long as 24 hours.

It's believed these fine particles deposit deep into the lungs and certain components may gain entrance to the blood stream, or cause an inflammatory response throughout the body. There is also evidence that functions in the body's nervous system are also disrupted.

The research is the latest in the relatively new field of Environmental Cardiology which looks at the association between air pollution and heart disease. Brook says that at the very least the findings support efforts to maintain current ambient air quality standards set by the Environmental Protection Agency.

"It really bolsters and strengthens the importance of maintaining air quality for human health," says Brook.

There are practical ways to avoid exposure to high levels of air pollution, such as avoiding unnecessary travel or commutes and not exercising during rush hour, or near busy roadways, Brook says. In modern society, the burning of fossil fuels is the primary source for air pollution.

"If air pollution levels are forecasted to be high, those with heart disease, diabetes or lung disease should avoid unnecessary outdoor activity," he says.

Additional authors: Bruce Urch, University of Toronto; J. Timothy Dvonch, University of Michigan; Robert L. Bard, University of Michigan; Mary Speck, Gage Occupational and Environmental Health Unit, Toronto; Gerald Keeler, University of Michigan; Masako Morishita, University of Michigan; Frank J. Marsik, University of Michigan; Ali S. Kamal, University of Michigan; Niko Kaciroti, University of Michigan; Jack Harkema, School of Veterinary Medicine, Michigan State University, East Lansing, Mich.; Paul Corey, University of Toronto; Frances Silverman, University of Toronto; Diane R. Gold, Harvard Medical School; Greg Wellenius, Beth Israel Deaconess Medical Center, Boston; Murray A. Mittleman, Beth Israel; Sanjay Rajagopalan, Ohio State University, Columbus, Ohio; and Jeffrey R. Brook, Gage Occupational and Environmental Health Unit, Toronto.

Funding: U.S. Environmental Protection Agency, the National Institutes of Health General Clinical Research Center, and the Natural Resources Canada and Air Quality Health Effects Research Section.

Reference: Hypertension, Vol. 54, Issue 3, Sept. 1, 2009

Resources:

What's today's air quality?

http://airnow.gov/index.cfm?action=airnow.national

U-M Cardiovascular Center

http://www.med.umich.edu/cvc/


'/>"/>
SOURCE University of Michigan Health System
Copyright©2009 PR Newswire.
All rights reserved

Related medicine technology :

1. American University of Beirut Medical Team Successfully Performs First Artificial Heart Implant in Lebanon
2. Video: MADIT-CRT Trial Results Provide Clinical Evidence That Cardiac Resynchronization Therapy Significantly Slows Heart Failure Progression
3. Ochsner Replaces Heart Valve Without Open Heart Surgery
4. Atlanta-based Med Tech Company CardioMEMS Raises Additional Capital to Advance its CHAMPION Clinical Trial for its Wireless Sensor System for Heart Failure Monitoring
5. WorldHeart Receives US Clinical Study Approval for the Levacor(TM) VAD
6. Midwest Mobile Dog Heart Health Tour to Provide Free Heart Examinations
7. Injection Reverses Heart-Attack Damage
8. July 2009 Mayo Clinic Health Letter Highlights a Positive Outlook, Bells Palsy and Heart Valve Repair
9. St. Francis Surgeon Uses Tissue Regeneration Technology to Rebuild Patients Heart Structures
10. Leading Experts Endorse Biohearts Muscle Stem Cell MyoCell Therapy
11. New Therapy Found to Prevent Heart Failure
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/7/2017)...  Diplomat Specialty Infusion Group, a brand of Diplomat Pharmacy, Inc. ... Iowa location. The Iowa ... an ISO 7 cleanroom—the standard needed to compound intravenous (IV) nutrition ... of pollutants. "Our new cleanroom ... serve our Iowa patients," said Phil ...
(Date:6/1/2017)... 2017 Nutriceutical Holdings (NH), parent company of ... and KD Pharma Group have decided to join forces ... Pharma Group. KD Pharma Group will become the largest ... the entire company. "We believe we have ... to growing the NH companies by providing us with ...
(Date:5/26/2017)... 2017  Endo International plc (NASDAQ: ENDP ) ... will represent the Company in a fireside chat at Goldman ... June 13, 2017 at 10:40 a.m. PT / 1:40 p.m. ... Rancho Palos Verdes, CA. ... be available on the Company,s website at http://www.endo.com/investors/overview . ...
Breaking Medicine Technology:
(Date:6/24/2017)... ... June 24, 2017 , ... Dr. ... 217 Portion Road in Lake Ronkonkoma, Dental365 offers patients high-quality and affordable routine ... visits to the dentist fit into their patients’ busy lifestyles. Dental365 also gladly ...
(Date:6/23/2017)... ... 2017 , ... "The Better Care Reconciliation Act (BCRA) falls ... people with all chronic conditions, including mental illnesses, while increasing the cost of ... Care Act (ACA) requirement that insurers cover pre-existing conditions, it does not require ...
(Date:6/23/2017)... ... 2017 , ... The Military Officers Association of America (MOAA) announced its support ... retired Marine Col. Thomas G. Bowman. , Bowman currently serves as the staff director ... with the issues and challenges veterans face with the VA. Following a 30-year career ...
(Date:6/23/2017)... ... June 23, 2017 , ... Goodcents Deli Fresh Subs today announced the opening ... 4210 SW 21st St. Topeka, Kan. 66604 (near 21st and Gage). It is owned ... owns three other locations in the Topeka and Bonner Springs, Kan. area. , ...
(Date:6/23/2017)... ... June 23, 2017 , ... 21 Middle East and South ... selected 21 leaders from government, business and civil society in 11 countries across the ... this fall, engaging in a transformative exchange of knowledge and ideas with the leading ...
Breaking Medicine News(10 mins):