In vitro induction of cytotoxicity and DNA strand breaks in CHO cells exposed to cypermethrin, pendimethalin and dichlorvos
被引:67
作者:
Patel, Sushila
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Patel, Sushila
[1
]
Bajpayee, Mahima
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Bajpayee, Mahima
[1
]
Pandey, Alok Kumar
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Pandey, Alok Kumar
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]
Parmar, Devendra
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Parmar, Devendra
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]
Dhawan, Alok
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Dhawan, Alok
[1
]
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[1] Ind Toxicol Res Ctr, Div Dev Toxicol, Lucknow 226001, Uttar Pradesh, India
comet assay;
DNA damage;
CHO cells;
cypermethrin;
dichlorvos;
pendimethalin;
D O I:
10.1016/j.tiv.2007.05.009
中图分类号:
R99 [毒物学(毒理学)];
学科分类号:
100405 ;
摘要:
The indiscriminate use of pesticides and herbicides to increase crop productivity has aroused a great concern among the environmental and health scientists due to their adverse effects in both target as well as non-target species. Although substantial information is available regarding their environmental and ecological impact, not much is known in regard to its toxicity in the mammalian system. Therefore a study was conducted for the assessment of cytotoxic and genotoxic effects of cypermethrin (Type II pyrethroid) dichlorvos (organophosphate) and pendimethalin (dinitroaniline herbicide) in Chinese hamster ovary (CHO) cells. CHO cells were exposed to 1 mu M, 10 mu M, 100 mu M, 1000 mu M, and 10,000 mu M, cypermethrin, pendimethalin and dichlorvos for 3 h and cytotoxicity was assessed by MTT assay. Their genotoxic potential was also evaluated by Comet assay. The results demonstrate that dichlorvos and pendimethalin exhibited higher extent of cytotoxicity as compared to cypermethrin. A significant (p < 0.05) concentration dependent increase in DNA damage was observed with dichlorvos (0.01 mu M and above) and pendimethalin (0.1 mu M and above) as evident by Comet assay parameters viz., Olive tail moment (arbitrary units), tail DNA (%) and tail length (mu M). Cyperinethrin induced a significant (P < 0.05) DNA damage only at higher concentrations (1000 and 5000 mu M). Our data indicates that these chemicals produce cytotoxicity and DNA damage in mammalian cells and should be used with caution. (C) 2007 Elsevier Ltd. All rights reserved.
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Bajpayee, M
Pandey, AK
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Parmar, D
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Parmar, D
Mathur, N
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Seth, PK
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Dhawan, A
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Parmar, D
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Dhawan, A
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Ali, M
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Dayal, M
Parmar, D
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Dhawan, A
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Dhawan, A
Ali, M
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Seth, PK
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