Tissue distribution and metabolism of triadimefon and triadimenol enantiomers in Chinese lizards (Eremias argus)

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院环境生物技术重点实验室

	Tissue distribution and metabolism of triadimefon and triadimenol enantiomers in Chinese lizards (Eremias argus)
	Li, Jitong; Wang, Yinghuan; Li, Wei; Xu, Peng; Guo, Baoyuan; Li, Jianzhong; Wang, Huili
刊名	ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
	2017-08-01
卷号	142 期号:0 页码:284-292
关键词	Chinese Lizards Degradation Metaboism Pathways Traidimefon P450 Monooxygenases
英文摘要	Triadimefon (TF, S-(+)-TF, R-(-)-TF) and its metabolite triadimenol (TN, TN-Al, A2 and TN-B1, B2) are two systemic fungicides and both of them are chiral pharmaceuticals which are widely used in agricultural industry. Many researches focused on the toxicity effects of triadimefon on mammals, while the ecotoxicological data of tiradimefon on reptiles is limited. In order to understand the toxicity mechanism of triadimefon in reptiles, the current study administrated S-(+)-TF or R-(-)-TF traidimefon (50 mg/kg(bw)) to Chinese lizards (Eremias argus) respectively, the absorption, distribution of triadimefon and the formation of triadimenol were analysed at different sampling times. The metabolic pathways were demonstrated through relative gene expression using quantitative real-time PCR reaction. During the experiment time, triadimefon was quickly peaked to the maximum concentration within 12 h in liver, brain, kidney, and plasma, eliminated slowly. The biotransformation in kidney was the lowest and fat possessed the worst degradation ability among others. The metabolite, triadimenol was detected in blood in 2 h and reached to a plateau at about 12 h in most organs (fat excepted), while the process of metabolism is stereoselective. The mainly metabolite in R-(-)-TF treated group was TN-B1, and TN-A2 in S-(+)-TF group which showed the selective metabolism to other species caused by environmental conditions, differences in the animal models and concentration of TF. The related gene expression of cyp1a1, cyp3a1 and hsd11 beta mRNA level in lizards showed different metabolic pathways in the liver and brain. Both P450s enzymes and 11 beta-hydroxysteroid dehydrogenase participated in metabolic reaction in liver, while no 11 beta-hydroxysieroid dehydrogenase pathway observed in brain. This diversity in liver and brain may cause different degradation rate and ecotoxicological effect in different organs.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/39657]
专题	生态环境研究中心_中国科学院环境生物技术重点实验室
推荐引用方式 GB/T 7714	Li, Jitong,Wang, Yinghuan,Li, Wei,et al. Tissue distribution and metabolism of triadimefon and triadimenol enantiomers in Chinese lizards (Eremias argus)[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2017,142(0):284-292.
APA	Li, Jitong.,Wang, Yinghuan.,Li, Wei.,Xu, Peng.,Guo, Baoyuan.,...&Wang, Huili.(2017).Tissue distribution and metabolism of triadimefon and triadimenol enantiomers in Chinese lizards (Eremias argus).ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,142(0),284-292.
MLA	Li, Jitong,et al."Tissue distribution and metabolism of triadimefon and triadimenol enantiomers in Chinese lizards (Eremias argus)".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 142.0(2017):284-292.