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IJFS 2016, 15 Back to browse issues page
Interspecies variation in the hepatic biotransformation of zearalenone: Evidence for bio-inactivation of mycoestrogen zearalenone in sturgeon fish
H. Malekinejad * , N. Agh
, hassanmalekinejad@yahoo.com
Abstract:   (2411 Views)

Zearalenone (ZEA) as mycoestrogen is found in human foods and animal feeds. Its estrogenic potency depends on its biotransformation fate. The hepatic biotransformation of ZEA in two species of sturgeon fish (Acipenser persicus and Huso huso) was investigated. ZEA was incubated with the hepatic microsomal and post-mitochondrial sub-fractions in the presence of NADPH and the metabolites were determined by means of HPLC. Moreover, the rate of glucuronidation for ZEA and its metabolites were estimated in the presence of uridine diphosphateglucuronic acid. b-zearalenol (b-ZOL) was found to be the major metabolite of ZEA by both sub-fractions. Enzymatic kinetics studies revealed that the maximum velocity (Vmax) in microsomal and post-mitochondrial fractions for b-ZOL production was found 5- and 7-folds in Huso huso and 8- and 12-folds in A. persicus higher than that for a-ZOL production, respectively. The H. huso hepatic post-mitochondrial fraction mainly glucurinated ZEA while in A. persicus, the metabolites and in particular b-ZOL were glucuronidated. Data suggest that the hepatic biotransformation of ZEA in studied sturgeons resulted in detoxification of ZEA as the main metabolite tends to be b-ZOL with weaker estrogenic property. Moreover, clear differences in glucuronidation profile are indicating interspecies variety in hepatic biotransformation of ZEA. 

Keywords: Acipenser persicus, Huso huso, Hepatic biotransformation, Glucuronidation, Subcellular fractions, Zearalenone
Full-Text [PDF 442 kb]   (1090 Downloads)    
Type of Study: Orginal research papers | Subject: fish disease
Received: 2016/03/2 | Accepted: 2016/03/2 | Published: 2016/03/2
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Malekinejad H, Agh N. Interspecies variation in the hepatic biotransformation of zearalenone: Evidence for bio-inactivation of mycoestrogen zearalenone in sturgeon fish. IJFS. 2016; 15 (1) :415-425
URL: http://jifro.ir/article-1-2132-en.html


Volume 15, Issue 1 (1-2016) Back to browse issues page
مجله علوم شیلاتی ایران Iranian Journal of Fisheries Sciences
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