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J Thorac Dis. 2016 Jan;8(1):E69-74. doi: 10.3978/j.issn.2072-1439.2016.01.19.

The impact of PM2.5 on the human respiratory system.

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Department of Respiratory Medicine, Second Affiliated Hospital of Soochow University, Suzhou 215004, China.


Recently, many researchers paid more attentions to the association between air pollution and respiratory system disease. In the past few years, levels of smog have increased throughout China resulting in the deterioration of air quality, raising worldwide concerns. PM2.5 (particles less than 2.5 micrometers in diameter) can penetrate deeply into the lung, irritate and corrode the alveolar wall, and consequently impair lung function. Hence it is important to investigate the impact of PM2.5 on the respiratory system and then to help China combat the current air pollution problems. In this review, we will discuss PM2.5 damage on human respiratory system from epidemiological, experimental and mechanism studies. At last, we recommend to the population to limit exposure to air pollution and call to the authorities to create an index of pollution related to health.


Air pollution; China; PM2.5; respiratory system

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