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Gonadal disruption after single dose exposure of prothioconazole and prothioconazole-desthio in male lizards (Eremias argus)
Xie, Yun; Jiang, Haotian; Chang, Jing; Wang, Yinghuan; Li, Jianzhong; Wang, Huili
2019-12-01
Source PublicationENVIRONMENTAL POLLUTION
ISSN0269-7491
Volume255Pages:-
AbstractProthioconazole (PTC) is a widely used triazole fungicide with low toxicity, and its desulfurization metabolite, prothioconazole-desthio (PTC-d), is reported to have higher reproductive toxicity to mammals. However, little is known about the reproductive toxicity, much less endocrine disrupting effect, of these two chemicals on reptiles. In this study, we investigated the effects of single dose of PTC/PTC-d (100 mg kg(-1) body weight) exposure on the pathomorphism of testes and epididymides, serum sex steroid hormones (testosterone and 17 beta-estradiol) and transcription of steroidogenic-related genes (STARD, cyp11A, cyp17A, cyp19A,17 beta-HSD, 3 beta-HSD, AR and ER-alpha) in gonads of male lizards (Eremias argus). Although structural disorder existed in PTC-d exposure group, severe gonadal disruption, especially suppression of spermatogenesis was only observed in testis after PTC treatment, which consequently led to the lack of spermatozoa in epididymal ducts. Consistent with this result, T/E-2 value in PTC exposure was elevated to a significant higher level compared with control and continually increased over time, while T/E-2 value in the PTC-d exposure group slightly increased only at 12 h. These results demonstrated a more serious disruption of FTC on male lizard gonads than PTC-d. In addition, the expression of cyp17 gene was inhibited at 6 h, however, was induced at 12 h, and exhibited negative correlations with STARD, cyp11A and 3 beta-HSD after PTC exposure at each timepoint In PTC-d group, the expression of STARD and 3 beta-HSD were significantly down-regulated, in contrast, cyp11A and cyp17 were up-regulated, and each gene showed consistent changes over time. For 17 beta-HSD, no significance was observed in both treated groups. This study was the first to compare the gonadal disruption of PTC and PTC-d in male lizards and elucidated that these two chemicals influenced the physiological function of male gonads through differential transcriptional modulation. (C) 2019 Elsevier Ltd. All rights reserved.
Department中国科学院环境生物技术重点实验室
KeywordProthioconazole Eremias argus Sex steroid hormones Steroidogenic-related genes Male gonads
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/43375
Collection中国科学院环境生物技术重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Shuangqing RD 18, Beijing 100085, Peoples R China
2.Univ Chinese Acad Sci, Yuquan RD 19A, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Xie, Yun,Jiang, Haotian,Chang, Jing,et al. Gonadal disruption after single dose exposure of prothioconazole and prothioconazole-desthio in male lizards (Eremias argus)[J]. ENVIRONMENTAL POLLUTION,2019,255:-.
APA Xie, Yun,Jiang, Haotian,Chang, Jing,Wang, Yinghuan,Li, Jianzhong,&Wang, Huili.(2019).Gonadal disruption after single dose exposure of prothioconazole and prothioconazole-desthio in male lizards (Eremias argus).ENVIRONMENTAL POLLUTION,255,-.
MLA Xie, Yun,et al."Gonadal disruption after single dose exposure of prothioconazole and prothioconazole-desthio in male lizards (Eremias argus)".ENVIRONMENTAL POLLUTION 255(2019):-.
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