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J Korean Med Assoc > Volume 50(2); 2007 > Article
Shin: Health Effects of Ambient Particulate Matter

Abstract

Fine or ultrafine particulate matter (PM) is a mixture of solid and liquid particles, including carbon?centered combustion particles, secondary inorganics, and crustal?derived particles. Recently, ambient particulate matter has been regarded as a serious health problem in the Republic of Korea. This review focuses on the importance of PM?induced effects, and the adverse health effects from experimental and epidemiological studies. There is widespread evidence that short?term increases in particulate matter result in increased mortality and morbidity in adults and children, even at low levels. Considerable consistency between results from experimental and epidemiological studies has been observed for many health effects, including pulmonary diseases and cardiovascular diseases, although the biologic mechanisms of the health effects are unclear. The adverse health effects are reported to be more pronounced in susceptible population groups such as the elderly, children, or people with preexisting cardiovascular and respiratory conditions. In addition to short?term exposures, long?term exposure to particulate matter is also associated with an increase in total mortality, cardiopulmonary mortality, and respiratory morbidity. The present review suggests that despite a considerable amount of research over the last decades, both epidemiological and experimental studies are needed to further clarify the issues on the effects of fine and ultrafine particulate matter.

Figure 1.
Air pollution in Korea (Ministry of Environment, 2003)
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Figure 2.
Environmental health policy in Korea
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Table 1.
PM mortality associations for specific causes of cardiopulmonary deaths based on pathophysiological pathways
Cause of Death Accelerated
Progression of COPD
Inflammation/Accelerated
Atherosclerosis
Altered Cardiac
Autonomic Function
All Cardiovascular diseases
Ischemic heart disease ↑↑↑
Dysrhythmias, heart failure, cardiac arrest ↑↑ ↑↑↑
Hypertensive disease
Other atherosclerosis, aortic aneurysms ↑↑↑
Cerebrovascular disease ↑↑
All other cardiovascular diseases
Diabetes ↑↑
All Respiratory diseases ↑↑
COPD ↑↑↑
 

Source: Modified from Pope CA (2004)

Table 2.
Susceptible populations to adverse health effects from PM exposure
Health effects Who's susceptible
Acute exposure
Mortality Elderly, Infant and children, persons with cardiopulmonary disease, pneumonia, influenza, or asthma
Hospital admission/visit Elderly, Infant and children, persons with cardiopulmonary disease, pneumonia, influenza, or asthma
Increased respiratory symptom People with Asthma and children
Decreased pulmonary function Children and adults
Blood viscosity, heart rate variability, pulmonary inflammation All
Chronic exposure
increased mortality rates, chronic cardiopulmonary disease, reduced lung function All

Source: modified from Pope CA (2000)

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