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Susceptibility of male and female Japanese medaka (Oryzias latipes) to 2,4,6-trichlorophenol-induced micronuclei in peripheral erythrocytes
Abstract 2,4,6-trichlorophenol (2,4,6-TCP) is a widespread probable human carcinogen and has been proven to have genotoxicity in in vitro assays. However, little genotoxicity information and no micronuclei induction data for 2,4,6-TCP is available from in vivo tests, especially for sex-specific differences. Following a preliminary test, a piscine peripheral erythrocyte micronucleus assay was conducted on medaka (Oryzias latipes) after a 28-day exposure to 2,4,6-TCP. In the present study, the mean micronuclei (MNC) frequencies of all of the groups increased in a dose-dependent manner, which indicated the potential genotoxicity of 2,4,6-TCP. Moreover, males were found to be more susceptible compared with females after a 28-day exposure to 2,4,6-TCP in all of the dosed groups above 10 μg·L−1. This is the first report on the potential of micronuclei induction and a sex-susceptible effect in the peripheral erythrocytes of mature fish after 2,4,6-TCP in vivo exposure.
Susceptibility of male and female Japanese medaka (Oryzias latipes) to 2,4,6-trichlorophenol-induced micronuclei in peripheral erythrocytes
Abstract 2,4,6-trichlorophenol (2,4,6-TCP) is a widespread probable human carcinogen and has been proven to have genotoxicity in in vitro assays. However, little genotoxicity information and no micronuclei induction data for 2,4,6-TCP is available from in vivo tests, especially for sex-specific differences. Following a preliminary test, a piscine peripheral erythrocyte micronucleus assay was conducted on medaka (Oryzias latipes) after a 28-day exposure to 2,4,6-TCP. In the present study, the mean micronuclei (MNC) frequencies of all of the groups increased in a dose-dependent manner, which indicated the potential genotoxicity of 2,4,6-TCP. Moreover, males were found to be more susceptible compared with females after a 28-day exposure to 2,4,6-TCP in all of the dosed groups above 10 μg·L−1. This is the first report on the potential of micronuclei induction and a sex-susceptible effect in the peripheral erythrocytes of mature fish after 2,4,6-TCP in vivo exposure.
Susceptibility of male and female Japanese medaka (Oryzias latipes) to 2,4,6-trichlorophenol-induced micronuclei in peripheral erythrocytes
Liu, Nannan (author) / Ma, Mei (author) / Xu, Yiping (author) / Zha, Jinmiao (author) / Rao, Kaifeng (author) / Wang, Zijian (author)
Frontiers of Environmental Science & Engineering ; 7 ; 77-84
2012-11-06
8 pages
Article (Journal)
Electronic Resource
English
Pesticide and Surfactant Mixtures Alter Sexual Differentiation in Japanese Medaka (Oryzias latipes)
| American Chemical Society | 2021
| Taylor & Francis Verlag | 2014