Detailed Information on Publication Record
2021
Assessing the Toxicity of 17 alpha-Ethinylestradiol in Rainbow Trout Using a 4-Day Transcriptomics Benchmark Dose (BMD) Embryo Assay
ALCARAZ, Alper James G., Kamil MIKULÁŠEK, David POTĚŠIL, Bradley PARK, Karman SHEKH et. al.Basic information
Original name
Assessing the Toxicity of 17 alpha-Ethinylestradiol in Rainbow Trout Using a 4-Day Transcriptomics Benchmark Dose (BMD) Embryo Assay
Authors
ALCARAZ, Alper James G. (124 Canada), Kamil MIKULÁŠEK (203 Czech Republic, belonging to the institution), David POTĚŠIL (203 Czech Republic, belonging to the institution), Bradley PARK (124 Canada), Karman SHEKH (124 Canada), Jessica EWALD (124 Canada), Connor BURBRIDGE (124 Canada), Zbyněk ZDRÁHAL (203 Czech Republic, guarantor, belonging to the institution), David SCHNEIDER (124 Canada), Jianguo XIA (124 Canada), Doug CRUMP (124 Canada), Nilardi BASU (124 Canada) and Markus HECKER
Edition
Environmental Science and Technology, American Chemical Society, 2021, 0013-936X
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10511 Environmental sciences
Country of publisher
United States of America
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 11.357
RIV identification code
RIV/00216224:14740/21:00123877
Organization unit
Central European Institute of Technology
UT WoS
000683363600040
Keywords in English
estrogen; risk assessment; transcriptomic benchmark dose (geneBMD); endocrine disruption; alternative toxicity testing
Tags
International impact, Reviewed
Změněno: 2/11/2024 20:44, Ing. Martina Blahová
Abstract
V originále
There is an urgent demand for more efficient and ethical approaches in ecological risk assessment. Using 17α-ethinylestradiol (EE2) as a model compound, this study established an embryo benchmark dose (BMD) assay for rainbow trout (RBT; Oncorhynchus mykiss) to derive transcriptomic points-of-departure (tPODs) as an alternative to live-animal tests. Embryos were exposed to graded concentrations of EE2 (measured: 0, 1.13, 1.57, 6.22, 16.3, 55.1, and 169 ng/L) from hatch to 4 and up to 60 days post-hatch (dph) to assess molecular and apical responses, respectively. Whole proteome analyses of alevins did not show clear estrogenic effects. In contrast, transcriptomics revealed responses that were in agreement with apical effects, including excessive accumulation of intravascular and hepatic proteinaceous fluid and significant increases in mortality at 55.1 and 169 ng/L EE2 at later time points. Transcriptomic BMD analysis estimated the median of the 20th lowest geneBMD to be 0.18 ng/L, the most sensitive tPOD. Other estimates (0.78, 3.64, and 1.63 ng/L for the 10th percentile geneBMD, first peak geneBMD distribution, and median geneBMD of the most sensitive over-represented pathway, respectively) were within the same order of magnitude as empirically derived apical PODs for EE2 in the literature. This 4-day alternative RBT embryonic assay was effective in deriving tPODs that are protective of chronic effects of EE2.
Links
LM2018140, research and development project |
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LQ1601, research and development project |
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90127, large research infrastructures |
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