Author + information
- Received January 14, 2008
- Revision received May 14, 2008
- Accepted May 19, 2008
- Published online August 26, 2008.
- Boris Z. Simkhovich, MD, PhD⁎,†,
- Michael T. Kleinman, PhD‡ and
- Robert A. Kloner, MD, PhD, FACC⁎,†,⁎ ()
- ↵⁎Reprint requests and correspondence:
Dr. Robert A. Kloner, The Heart Institute, Good Samaritan Hospital, 1225 Wilshire Boulevard, Los Angeles, California 90017.
Recent epidemiologic studies show that increased levels of air pollutants are positively associated with cardiovascular morbidity and mortality. Inhalation of air pollutants affects heart rate, heart rate variability, blood pressure, vascular tone, blood coagulability, and the progression of atherosclerosis. Several categories within the general population (i.e., people with pre-existing cardiovascular disease and diabetic and elderly individuals) are considered to be more susceptible to air pollution–mediated cardiovascular effects. Major mechanisms of inhalation-mediated cardiovascular toxicity include activation of pro-inflammatory pathways and generation of reactive oxygen species. Although most studies focus on the influence of systemic effects, recent studies indicate that ultrafine particles may be translocated into the circulation and directly transported to the vasculature and heart where they can induce cardiac arrhythmias and decrease cardiac contractility and coronary flow.
This study was supported by U.S. Environmental Protection Agency (USEPA) STAR Grant No. RD-83195201 and the Gwladys and John Zurlo Charitable Foundation.
- Received January 14, 2008.
- Revision received May 14, 2008.
- Accepted May 19, 2008.
- American College of Cardiology Foundation
- Historical Perspective
- Size and Composition of Ambient Particles
- Morbidity and Mortality Caused by Air Pollution
- Cardiovascular Events Triggered by Air Pollution
- Effects of Air Pollutants on Cardiovascular Indexes in Humans
- Mechanisms of Air Pollution-Induced Toxicity