Genotoxic And Oxidative Damage Related To PM2.5 Chemical Fraction

Many studies have pointed out a correlation between airborne PM quantitative exposure and health effects. The aim of this research is the investigation of the role of the PM2.5 chemical fraction in the DNA damage induction in human cells (A549). Air samples (PM2.5) were collected in different sites...

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Main Authors: Sa. Bonetta, Gianotti, V, Scozia, D, Si. Bonetta, Carraro, E, Gosetti, F, Oddone, M, Gennaro, M C
Format: Conference Proceeding
Language:English
Subjects:
Bioassays
Biological effects
Chemical composition
Comet assay
Composition effects
Correlation analysis
Damage assessment
Damage detection
Deoxyribonucleic acid
DNA
DNA damage
Exposure
Genotoxicity
Highways
Metal concentrations
Metals
Organic chemistry
Particulate matter
Polycyclic aromatic hydrocarbons
Toxicity
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Gianotti, V
Scozia, D
Si. Bonetta
Carraro, E
Gosetti, F
Oddone, M
Gennaro, M C
description Many studies have pointed out a correlation between airborne PM quantitative exposure and health effects. The aim of this research is the investigation of the role of the PM2.5 chemical fraction in the DNA damage induction in human cells (A549). Air samples (PM2.5) were collected in different sites (urban, industrial and highway) using a high–volume sampler. Organic and water-soluble extracts of PM2.5 were tested on A549 cells to evaluate genotoxic and oxidative damage using the Comet assay without and with formamido-pyrimidine-glycosylase (Fpg). Organic and water extracts were analysed for determination of PAHs by GC-MS methods and metals by the ICP-MS technique respectively. The PM2.5 organic extract of all the samples caused a significant dose-dependent increase of the A549 DNA damage. The genotoxic effect was related to IPA PM2.5 content and the highest effect was observed for the motorway site sample (65.03 CL/10m3) while the oxidative damage was observed in PM2.5 water extract of the industrial and motorway sites. The extent of the oxidative damage seems to be related to the type and concentration of metals present in these samples. The results of this study emphasize the importance of evaluating the PM chemical composition for the biological effect determination. This concern highlights the need for considering its qualitative composition in addition to its size and air concentration for PM health effect evaluation and exposure management.
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subjects Bioassays
Biological effects
Chemical composition
Comet assay
Composition effects
Correlation analysis
Damage assessment
Damage detection
Deoxyribonucleic acid
DNA
DNA damage
Exposure
Genotoxicity
Highways
Metal concentrations
Metals
Organic chemistry
Particulate matter
Polycyclic aromatic hydrocarbons
Toxicity
title Genotoxic And Oxidative Damage Related To PM2.5 Chemical Fraction
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