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• W1986895539 endingPage "1374" @default.
• W1986895539 startingPage "1368" @default.
• W1986895539 abstract "The aim of the present study was to investigate in vitro toxicological effects of PM2.5 suspensions, their water-soluble fraction and solvent-extractable organics from dust storm on the viability and DNA of rat alveolar macrophages and in vivo toxicological effects of PM2.5 suspensions on DNA of lung cells of rats. PM2.5 samples from dust storm and normal weather were collected in Baotou city, Inner Mongolia Autonomous Region, and Wuwei city, Gansu Province, China, in March, 2004. DNA damage was detected with single cell gel electrophoresis technique and cytotoxicity was assessed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) reduction assay. The results showed that: (1) In vitro, PM2.5 suspensions, their water-soluble fraction and solvent-extractable organics from both dust storm and normal weather caused a decrease of the cell viability and an increase of DNA damage of rat alveolar macrophages in a dose-response manner; for both Baotou city and Wuwei city, the samples of normal weather showed higher DNA damage than those of dust storm at the highest treated dosage; for both normal weather PM2.5 and dust storm PM2.5, their solvent-extractable organics showed higher DNA damage than the water-soluble fraction. (2) In vivo, PM2.5 from both dust storm and normal weather caused an increase of DNA damage of rat lung cells in a dose-response manner. (3) Baotou city is one of the heavy industrial cities, while Wuwei is one of agricultural cities in Northwest region of China. The effects induced by normal weather samples in Baotou city slightly higher than those in Wuwei city on DNA damage, though there was no significant difference was found between two cities. These results lead to conclusions that dust storm PM2.5 as well as normal weather PM2.5 could lead to DNA damage and the organic compounds and the insoluble particle-core might be the main contributors to DNA damage. Our results suggest that the risk of health effects may be greater during dust storms because dust storm PM2.5 whose airborne mass were much higher. Further studies are needed to determine the components of dust storm particles that may contribute to the particle toxicity." @default.
• W1986895539 created "2016-06-24" @default.
• W1986895539 creator A5010389697 @default.
• W1986895539 creator A5029496754 @default.
• W1986895539 date "2007-08-01" @default.
• W1986895539 modified "2023-09-23" @default.
• W1986895539 title "Damage effects of dust storm PM2.5 on DNA in alveolar macrophages and lung cells of rats" @default.
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• W1986895539 doi "https://doi.org/10.1016/j.fct.2007.01.014" @default.
• W1986895539 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/17336437" @default.
• W1986895539 hasPublicationYear "2007" @default.
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