Enantioselective accumulation, elimination and metabolism of fenbuconazole in lizards (Eremias argus)
文献类型：期刊论文
| 作者 | Hao, Weiyu; Zhang, Yanfeng; Xu, Peng; Xie, Yun; Li, Wei ; Wang, Huili
|
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2021-05 |
| 卷号 | 271页码:- |
| 关键词 | Fenbuconazole Lizard Enantioselective Elimination Metabolites |
| ISSN号 | 0045-6535 |
| 英文摘要 | The enantioselective accumulation, elimination and metabolism of fenbuconazole in lizards were determined following a single-dose (25 mg/kg(bw)) exposure to racemic or enantiomeric fenbuconazole. Accumulation of fenbuconazole was found in lizard fat with rac-form > enantiopure enantiomers. The enantiomer fractions (EFs) were higher than 0.5 in the blood, while EFs were less than 0.5 in the liver, brain, skin and stomach. There was conversion from (+)-fenbuconazole to (-)-fenbuconazole in lizard liver and conversion from (-)-fenbuconazole to (+)-fenbuconazole in lizard liver and blood. The results showed that enantioselective accumulation appeared in lizards, but the direction varied among blood and different tissues. The elimination half-lives (t(1/2)) of (+)-fenbuconazole were higher than those of (-)-fenbuconazole in the blood and liver, suggesting that (-)-fenbuconazole eliminated faster than (+)-fenbuconazole in these tissues. In addition, both (+)-fenbuconazole and (-)-fenbuconazole eliminated faster in the liver and stomach exposed to racemate than those exposed to enantiopure enantiomers. On the contrary, the form of racemate decreased the elimination rate of fenbuconazole in lizard fat. Synergistic elimination may occur when two enantiomers coexisted in lizard liver and stomach, while the racemate produced antagonistic elimination in lizard fat. Simultaneously, three metabolites, RH-6467, RH-9029&RH-9030 and keto-mchlorophenol, were discovered in lizard liver. Only two metabolites, RH-6467 and RH-9029&RH-9030, were found in lizard blood. RH-9029&RH-9030 were the major metabolites. The discovered enantiomers of (+)-fenbuconazole metabolites were different from those of (-)-fenbuconazole. The findings of this study may provide a better understanding of the enantioselective behaviors of chiral triazole fungicides in reptiles. (C) 2020 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46110]  |
| 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 |
| 作者单位 | 1.Univ Chinese Acad Sci, Yuquan RD 19 A, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Shuangqing RD 18, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hao, Weiyu,Zhang, Yanfeng,Xu, Peng,et al. Enantioselective accumulation, elimination and metabolism of fenbuconazole in lizards (Eremias argus)[J]. CHEMOSPHERE,2021,271:-. |
| APA | Hao, Weiyu,Zhang, Yanfeng,Xu, Peng,Xie, Yun,Li, Wei,&Wang, Huili.(2021).Enantioselective accumulation, elimination and metabolism of fenbuconazole in lizards (Eremias argus).CHEMOSPHERE,271,-. |
| MLA | Hao, Weiyu,et al."Enantioselective accumulation, elimination and metabolism of fenbuconazole in lizards (Eremias argus)".CHEMOSPHERE 271(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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