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Abstract Title:

Fipronil-induced genotoxicity and DNA damage in vivo: Protective effect of vitamin E.

Abstract Source:

Hum Exp Toxicol. 2016 Jul 1. Epub 2016 Jul 1. PMID: 27371222

Abstract Author(s):

P C Badgujar, N A Selkar, G A Chandratre, N N Pawar, V D Dighe, S T Bhagat, A G Telang, G R Vanage

Article Affiliation:

P C Badgujar

Abstract:

Fipronil, an insecticide of the phenylpyrazole class has been classified as a carcinogen by United States Environmental Protection Agency, yet very limited information is available about its genotoxic effects. Adult male and female animals were gavaged with various doses of fipronil (2.5, 12.5, and 25 mg/kg body weight (bw)) to evaluate micronucleus test (mice), chromosome aberration (CA), and comet assay (rats), respectively. Cyclophosphamide (40 mg/kg bw; intraperitoneal) was used as positive control. Another group of animals were pretreated with vitamin E orally (400 mg/kg bw) for 5 days prior to administration of fipronil (12.5 mg/kg). Fipronil exposure in both male and female mice caused significant increase in the frequency of micronuclei (MN) in polychromatic erythrocytes. Similarly, structural CAs in bone marrow cells and DNA damage in the lymphocytes was found to be significantly higher in the male and female rats exposed to fipronil as compared to their respective controls. The average degree of protection (male and female animals combined together) shown by pretreatment of vitamin E against fipronil-induced genotoxicity was 63.28%: CAs; 47.91%: MN formation; and 74.70%: DNA damage. Findings of this study demonstrate genotoxic nature of fipronil regardless of gender effect and documents protective role of vitamin E.

Study Type : Animal Study
Additional Links
Pharmacological Actions : Genoprotective : CK(270) : AC(97)
Problem Substances : Pesticides : CK(827) : AC(95)

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Sayer Ji
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