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Organ Specific Metabolic Activation of Five Extracts of Indoor and Outdoor Particulate Matter

Overview
Journal Arch Toxicol
Specialty Toxicology
Date 1988 Jan 1
PMID 3355366
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Abstract

In this study liver and lung homogenates of untreated and Aroclor 1254-pretreated rats (Wistar) and mice (Swiss) were compared for their P-450 content and their capacity to activate extracts of airborne particulate matter, sampled indoors and outdoors. Results show that in addition to liver, lung homogenates of rat (Wistar) and mouse (Swiss) are also able to activate extracts of airborne particulate matter in a comparative way. Uninduced liver and lung homogenates showed only minor differences in activation capacity in the metabolism of airborne particles. In contrast to liver homogenates, Aroclor 1254 pretreatment of test animals did not give strong induction of metabolic activation capacity of lung homogenates. P-450 content was observed in all liver and lung homogenates of mouse and rat and in human lung homogenates. The results obtained in this study suggest that the respiratory tract may be an important site for in vivo bioactivation of respirable particles.

References
1.
Kado N, Guirguis G, Flessel C, Chan R, Chang K, Wesolowski J . Mutagenicity of fine (less than 2.5 microns) airborne particles: diurnal variation in community air determined by a Salmonella micro preincubation (microsuspension) procedure. Environ Mutagen. 1986; 8(1):53-66. DOI: 10.1002/em.2860080106. View

2.
Boobis A, Davies D . Human cytochromes P-450. Xenobiotica. 1984; 14(1-2):151-85. DOI: 10.3109/00498258409151404. View

3.
Omura T, Sato R . THE CARBON MONOXIDE-BINDING PIGMENT OF LIVER MICROSOMES. II. SOLUBILIZATION, PURIFICATION, AND PROPERTIES. J Biol Chem. 1964; 239:2379-85. View

4.
Talcott R, Harger W . Airborne mutagens extracted from particles of respirable size. Mutat Res. 1980; 79(2):177-80. DOI: 10.1016/0165-1218(80)90087-7. View

5.
Alink G, Smit H, van Houdt J, Kolkman J, Boleij J . Mutagenic activity of airborne particulates at non-industrial locations. Mutat Res. 1983; 116(1):21-34. DOI: 10.1016/0165-1218(83)90003-4. View