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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Ghio, Andrew J. Smith, Candice B. Madden, Michael C. |
| Description | Country affiliation: United States Author Affiliation: Ghio AJ ( Environmental Public Health Division, National Health and Environmental Effects Research Laboratory, US Environmental Protection Agency, Chapel Hill, North Carolina, USA. ghio.andy@epa.gov) |
| Abstract | PURPOSE OF REVIEW: Epidemiologic investigation has associated traffic-related air pollution with adverse human health outcomes. The capacity of diesel exhaust particles (DEPs), a major emission source air pollution particle, to initiate an airway inflammation has subsequently been investigated. We review the recent controlled human exposures to diesel exhaust and DEPs, and summarize the investigations into the associations between this emission source air pollution particle and airway inflammation. RECENT FINDINGS: Using bronchoalveolar lavage, bronchial biopsies, and sputum collection, studies have demonstrated inflammation in the airways of healthy individuals after exposure to diesel exhaust and DEPs. This inflammation has included neutrophils, eosinophils, mast cells, and lymphocytes. Elevated expression and concentrations of inflammatory mediators have similarly been observed in the respiratory tract after diesel exhaust and DEP exposure. An increased sensitivity of asthmatic individuals to the proinflammatory effects of DEPs has not been confirmed. SUMMARY: Inflammation after diesel exhaust and DEP exposure is evident at higher concentrations only; there appears to be a threshold dose for DEPs approximating 300âµg/m. The lack of a biological response to DEPs at lower concentrations may reflect a contribution of gaseous constituents or interactions between DEPs and gaseous air pollutants to the human inflammatory response and function loss. |
| File Format | HTM / HTML |
| ISSN | 10705287 |
| Issue Number | 2 |
| Volume Number | 18 |
| e-ISSN | 15316971 |
| Journal | Current Opinion in Pulmonary Medicine |
| Language | English |
| Publisher | Lippincott Williams & Wilkins |
| Publisher Date | 2012-03-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Pulmonary Medicine Air Pollutants Adverse Effects Asthma Etiology Bronchitis Inflammation Mediators Metabolism Inhalation Exposure Vehicle Emissions Toxicity Air Pollution Pathology Biopsy Bronchoalveolar Lavage Female Humans Male Sputum Journal Article Review |
| Content Type | Text |
| Resource Type | Article |
| Subject | Pulmonary and Respiratory Medicine |
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