title: The effects of endosulfan on cytochrome P450 enzymes and glutathione S-transferases in zebrafish (Danio rerio) livers.
abstract: Endosulfan, an organochlorine pesticide, has been used worldwide in the past decades. The present study was performed to investigate the effect of endosulfan on liver microsomal cytochrome P450 (CYP) enzymes and glutathione S-transferases (GST) in zebrafish. Male and female zebrafish were separated and exposed to a control and four concentrations of endosulfan (0.01, 0.1, 1, and 10μgL(-1)) and were sampled on days 7, 14, 21, and 28. After exposure to endosulfan, the content of CYP increased and later gradually fell back to control level in most sampling time intervals. A similar tendency was also found in the activities of NADPH-P450 reductase (NCR), aminopyrine N-demethylase (APND) and erythromycin N-demethylase (ERND). GST activities were generally higher in treatment groups than control groups. Regarding sex-based differences, the induction degree of the activity of NCR was generally higher in males than females. Similar differences were also found on the 28th day in the activities of APND and ERND, as well as GST activity on the 7th day. Overall, the present results demonstrate the toxicity at low doses of endosulfan and indicated marked induction of CYP and GST enzymes in zebrafish liver.
authors.affiliation: College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, 61 Daizong Road, Taian 271018, China. dmdongmiao@163.com
authors.forename: Miao
authors.initials: M
authors.lastname: Dong
authors.forename: Lusheng
authors.initials: L
authors.lastname: Zhu
authors.forename: Bo
authors.initials: B
authors.lastname: Shao
authors.forename: Shaoyuan
authors.initials: S
authors.lastname: Zhu
authors.forename: Jun
authors.initials: J
authors.lastname: Wang
authors.forename: Hui
authors.initials: H
authors.lastname: Xie
authors.forename: Jinhua
authors.initials: J
authors.lastname: Wang
authors.forename: Fenghua
authors.initials: F
authors.lastname: Wang
mesh_terms: D000633:Aminopyrine N-Demethylase / Q000378:metabolism; D000818:Animals; D051544:Cytochrome P-450 CYP3A / Q000378:metabolism; D003577:Cytochrome P-450 Enzyme System / Q000378:metabolism*; D004726:Endosulfan / Q000633:toxicity*; D005260:Female; D005982:Glutathione Transferase / Q000378:metabolism*; D007306:Insecticides / Q000633:toxicity*; D008099:Liver / Q000187:drug effects / Q000201:enzymology; D008297:Male; D009251:NADPH-Ferrihemoprotein Reductase / Q000378:metabolism; D012737:Sex Factors; D014874:Water Pollutants, Chemical / Q000633:toxicity; D015027:Zebrafish
chemical_list: D007306:Insecticides; D014874:Water Pollutants, Chemical; D003577:Cytochrome P-450 Enzyme System; D051544:Cytochrome P-450 CYP3A; D000633:Aminopyrine N-Demethylase; D009251:NADPH-Ferrihemoprotein Reductase; D005982:Glutathione Transferase; D004726:Endosulfan