Inhalation toxicology of diesel exhaust particles. 1982

R O McClellan, and A L Brooks, and R G Cuddihy, and R K Jones, and J L Mauderly, and R K Wolff

Our present knowledge of the health effects of diesel exhaust particles can be summarized as follows: 1. Diesel exhaust particles are very small in size and consist of a carbonaceous core with a myriad of adsorbed hydrocarbon compounds that are readily extracted with organic solvents. 2. The particle extracts are cytotoxic and mutagenic in in vitro bacterial and mammalian cell cultures. 3. The particle extracts area carcinogenic when painted on mouse skin along with a suitable promoter. 4. Inhaled particles readily deposit in the respiratory tract, a portion is rapidly cleared and a substantial portion is retained for long periods of time (over 100 days) in the lung. 5. Adsorbed hydrocarbon compounds slowly dissociate from the particles in biological media and presumably in the lung. 6. Detoxification mechanisms act on the hydrocarbon compounds released from the particles to minimize effects in in vitro systems and presumably in vivo.

UI MeSH Term Description Entries
D008168 Lung Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood. Lungs
D009153 Mutagens Chemical agents that increase the rate of genetic mutation by interfering with the function of nucleic acids. A clastogen is a specific mutagen that causes breaks in chromosomes. Clastogen,Clastogens,Genotoxin,Genotoxins,Mutagen
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000393 Air Pollutants Any substance in the air which could, if present in high enough concentration, harm humans, animals, vegetation or materials. Substances include GASES; PARTICULATE MATTER; and volatile ORGANIC CHEMICALS. Air Pollutant,Air Pollutants, Environmental,Environmental Air Pollutants,Environmental Pollutants, Air,Air Environmental Pollutants,Pollutant, Air,Pollutants, Air,Pollutants, Air Environmental,Pollutants, Environmental Air
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001335 Vehicle Emissions Gases, fumes, vapors, and ODORANTS escaping from the cylinders of a gasoline or diesel internal-combustion engine. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed & Random House Unabridged Dictionary, 2d ed) Automobile Exhaust,Diesel Exhaust,Engine Exhaust,Vehicle Emission,Vehicular Emission,Traffic-Related Pollutants,Transportation Emissions,Vehicular Emissions,Emission, Vehicle,Emission, Vehicular,Emissions, Transportation,Emissions, Vehicle,Emissions, Vehicular,Exhaust, Automobile,Exhaust, Diesel,Exhaust, Engine,Pollutants, Traffic-Related,Traffic Related Pollutants
D012306 Risk The probability that an event will occur. It encompasses a variety of measures of the probability of a generally unfavorable outcome. Relative Risk,Relative Risks,Risk, Relative,Risks,Risks, Relative

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