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Effect of Cigarette Filter on Cytotoxicity Potential of Mainstream Smoke  

Shin Han-Jae (KT&G Central Research Institute)
Sohn Hyung-Ok (KT&G Central Research Institute)
Han Jung-Ho (KT&G Central Research Institute)
Park Chul-Hoon (KT&G Central Research Institute)
Hur Jae-Yeon (KT&G Central Research Institute)
Lee Dong-Wook (KT&G Central Research Institute)
Hwang Keon-Joong (KT&G Central Research Institute)
Hyun Hak-Chul (KT&G Central Research Institute)
Publication Information
Journal of the Korean Society of Tobacco Science / v.27, no.1, 2005 , pp. 51-58 More about this Journal
Abstract
The objective of this study was to evaluate the effect of cigarette filter on in vitro cytotoxicity of cigarette mainstream smoke from the cigarette. In this work, we used 3 types of cigarettes included non-filtered 2R4F cigarette, cellulose acetate-filtered 2R4F cigarette, and carbon dual-filtered 2R4F cigarette which was made from original 2R4F by replacing with an acetate filter containing carbon. The cytotoxicity of both the cigarette smoke condensate (CSC), which was collected in Cambridge filter pad, and the gas/vapor phase (GVP), which was bubbled through in phosphate-buffered saline in a gas-washing bottle, was determined using a neutral red uptake assay with CHO-K1 cells. With regard to cytotoxicity when calculated on an equal puff basis, the cytotoxicity of CSC from the filtered cigarettes was lower than that of the non filtered cigarette. Also, $EC_{50}$ vlaue of GVP from carbon filter cigarette was 40.9 puff/L, indicating the cytotoxicity to be $20\%$ lower than that of the CA filter cigarette. The cytotoxicity of the GVP was correlated to the several vapor phase components (formaldehyde, acetaldehyde, acetone, acrolein, crotonaldehyde and MEK). In conclusion, carbon filter, which significantly reduced the amount of carbonyl compounds in mainstream cigarette smoke, results in significant reductions in the cytotoxicity potential of the smoke.
Keywords
cigarette smoke condensate; gas-vapor phase; CHO cells; cytotoxicity;
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