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Triclosan (TCS) and Triclocarban (TCC) cause lifespan reduction and reproductive impairment through oxidative stress-mediated expression of the defensome in the monogonont rotifer (Brachionus koreanus)

Cited 15 time in scopus
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Title
Triclosan (TCS) and Triclocarban (TCC) cause lifespan reduction and reproductive impairment through oxidative stress-mediated expression of the defensome in the monogonont rotifer (Brachionus koreanus)
Authors
Han, Jeong
hoon
Won, Eun-Ji
Hwang, Un-Ki
Kim, Il-Chan
Yim, Joung Han
Lee, Jae-Seong
Subject
Biochemistry & Molecular Biology; Endocrinology & Metabolism; Toxicology; Zoology
Keywords
Triclosan (TCS); Triclocarban (TCC); Rotifer; Brachionus koreanus; Reactive oxygen species
Issue Date
2016
Citation
Han, Jeong, et al. 2016. "Triclosan (TCS) and Triclocarban (TCC) cause lifespan reduction and reproductive impairment through oxidative stress-mediated expression of the defensome in the monogonont rotifer (Brachionus koreanus)". Comparative Biochemistry and Physiology, Part C, 185-186: 131-137.
Abstract
Triclosan (TCS) and Triclocarban (TCC) are used as antimicrobial agents and have beenwidely dispersed and detected in the marine environment. However, the toxicities of TCS and TCC have been poorly investigated in marine invertebrates. In this study, the effects of TCS and TCC on mortality, population growth, lifespan, and fecundity were examined in the monogonont rotifer (Brachionus koreanus) using cellular ROS levels, GST enzymatic activity, and gene expression of defensomes. The median lethal concentration (LC50) of TCS (393.1 μg/L) and TCC (388.1 μg/L) was also determined in the same species. In TCS- and TCC-exposed B. koreanus, growth retardation and reduced fecundity were observed and were shown to have a potentially deleterious effect on the life cycle of B. koreanus. In addition, time-dependent increases in ROS content (%) and GST enzymatic activity were shown in response to TCS and TCC exposure. Additionally, transcript levels of detoxification proteins (e.g., CYPs), antioxidant proteins (e.g., GST-sigma, Cu/ZnSOD, CAT), and heat shock proteins (Hsps)were modulated in response to TCS and TCC exposure over a 24 h period. Our results indicate that TCS and TCC induce oxidative stress and transcriptional regulation of detoxification, antioxidant, and heat shock proteins, resulting in changes in lifespan and fecundity.
DOI
http://dx.doi.org/10.1016/j.cbpc.2016.04.002
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