RT Journal Article
ID 2b8c3ea354508949
A1 Patel, Vivek
A1 Kantipudi, Neha
A1 Jones, Graham
A1 Upton, Adrian
A1 Kamath, Markad
T1 Air Pollution and Cardiovascular Disease: A Review
JF Critical Reviews™ in Biomedical Engineering
JO CRB
YR 2016
FD 2017-09-12
VO 44
IS 5
SP 327
OP 346
K1 Air pollution
K1 cardiovascular diseases
AB Air pollution is comprised of different compounds and particulate matter (PM) of sizes 2.5 and 10 μm, with
the former size posing the greatest danger to humans. Evidence suggests that the global rise in air pollution levels during the past century is correlated with the increased incidence of diseases of the cardiovascular system. On a global scale, 7 million individuals died as a result of the effects of air pollution in 2012. Air pollution leads to tremendous amounts of financial burden (in 2010, $16 trillion in the US and Europe) on the health-care system. The severity of effects experienced by varying
populations due to air pollution can differ due to locale, length of exposure, weather conditions, residential proximity to major highways or factories, and soil aridity. Pollutants affect the heart, blood vessels, and blood at a molecular level through proinflammatory or oxidative stress response, autonomic nervous system imbalance, and the direct permeation of harmful compounds into the tissue. The dysfunction of cells and biological processes of the cardiovascular system due to PM leads to an increased prevalence of cardiovascular diseases (CVDs) such as atherosclerosis, hypertension, myocardial infarction,
thrombosis, and restricted valve motion. Studies in countries such as China have shown an increase of 0.25% in ischemic heart disease (IHD) mortality and a 0.27% increase in IHD morbidity due to a 10 μg/m3 increase in PM. In a study conducted in the US, PM2.5 concentrations ranged from 9.2−22.6 μg/m3, and every 5−μg/m3 increase in PM2.5 caused coronary calcification
to increase by 4.1 Agatston units/yr. Studies on traffic-related air pollution found that nonhypertensive participants residing within 100 m of major roadways experienced an increase in systolic (0.35 mmHg) and diastolic (0.22 mmHg) blood pressure as a result of increases in traffic. The progression of CVD due to pollution has been found to fluctuate within individuals
based on age, gender, location of exercise, smoking, pregnancy, diabetes, preexisting cardiovascular or pulmonary
diseases, and other factors. Considering the number of individuals affected by pollution on a daily basis and the burden that this places on society through the health-care system, immediate preventive measures are needed to address these problems. Increased knowledge about the widespread effects of pollution on human physiological systems should aid in remediating the problem across the globe. Biomedical engineers can have a great positive impact in developing better instrumentation to measure discrete pollutants and characterizing their harmful effects on physiological systems.
PB Begell House
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