TY - JOUR
T1 - Subacute inhalation toxicity assessment of fly ash from industrial waste incinerators
AU - Shim, Ilseob
AU - Oh, Eunha
AU - Yang, Sangyoung
AU - Ryu, Taekwon
AU - Soh, Jaewon
AU - Sul, Donggeun
AU - Kim, Pilje
N1 - Funding Information:
This work was supported by the National Institute of Environmental Research (2010).
PY - 2012/9
Y1 - 2012/9
N2 - Fly ash from industrial waste incinerators has been a significant concern because of their constituent toxic heavy metals and organic compounds. The objective of this study was to identify the subacute inhalation toxicity of fly ash from industrial waste incinerators, using whole body inhalation exposure chambers. Male and female groups of Sprague-Dawley rats were exposed to fly ash by inhalation of concentrations of 0, 50, 100, 200mg/m3, for 6h/day, 5 days/week for 4 weeks. There was no significant difference in body weight, and relative organ weight to body weight, between the exposure groups and the control group. Hematological examinations revealed a significant increase of monocyte counts in fly ash exposed rats and brown pigment laden macrophage was found in the lungs of rats exposed to high concentration of fly ash. A decrease of blood glucose levels and an increase in glutamate oxaloacetate transaminase activity were observed in fly ash treated rats. There was also a significant increase of lactate dehydrogenase levels in rat blood exposed fly ash. A significant dose-dependent increase of DNA damage was found in lymphocytes, spleen, bronchoalveolar lavage, liver, lung, and thymus of rats exposed to fly ash. In addition, the level of lipid peroxidation was increased in the plasma of rats exposed to a high concentration of fly ash. These results suggest that inhalation of fly ash from industrial waste incinerators can induce histopathologic, hematological, and serum biochemical changes and oxidative damage.
AB - Fly ash from industrial waste incinerators has been a significant concern because of their constituent toxic heavy metals and organic compounds. The objective of this study was to identify the subacute inhalation toxicity of fly ash from industrial waste incinerators, using whole body inhalation exposure chambers. Male and female groups of Sprague-Dawley rats were exposed to fly ash by inhalation of concentrations of 0, 50, 100, 200mg/m3, for 6h/day, 5 days/week for 4 weeks. There was no significant difference in body weight, and relative organ weight to body weight, between the exposure groups and the control group. Hematological examinations revealed a significant increase of monocyte counts in fly ash exposed rats and brown pigment laden macrophage was found in the lungs of rats exposed to high concentration of fly ash. A decrease of blood glucose levels and an increase in glutamate oxaloacetate transaminase activity were observed in fly ash treated rats. There was also a significant increase of lactate dehydrogenase levels in rat blood exposed fly ash. A significant dose-dependent increase of DNA damage was found in lymphocytes, spleen, bronchoalveolar lavage, liver, lung, and thymus of rats exposed to fly ash. In addition, the level of lipid peroxidation was increased in the plasma of rats exposed to a high concentration of fly ash. These results suggest that inhalation of fly ash from industrial waste incinerators can induce histopathologic, hematological, and serum biochemical changes and oxidative damage.
KW - Comet assay
KW - Fly ash
KW - Heavy metals
KW - Inhalation
KW - Lipid peroxidation
UR - http://www.scopus.com/inward/record.url?scp=84866120287&partnerID=8YFLogxK
U2 - 10.3109/08958378.2012.716869
DO - 10.3109/08958378.2012.716869
M3 - Article
C2 - 22954398
AN - SCOPUS:84866120287
SN - 0895-8378
VL - 24
SP - 741
EP - 750
JO - Inhalation Toxicology
JF - Inhalation Toxicology
IS - 11
ER -