Long-term effects of oxytetracycline exposure in zebrafish: A multi-level perspective

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12220%2F19%3A43899049" target="_blank" >RIV/60076658:12220/19:43899049 - isvavai.cz</a>

Alternative codes found

RIV/60076658:12520/19:43899049

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0045653519301638" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0045653519301638</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.chemosphere.2019.01.147" target="_blank" >10.1016/j.chemosphere.2019.01.147</a>

Result language

angličtina

Original language name

Long-term effects of oxytetracycline exposure in zebrafish: A multi-level perspective

Original language description

Oxytetracycline (OTC) is a broad-spectrum antibiotic widely used in livestock production. Like many other pharmaceuticals, OTC is not completely metabolized by the organism and thus, increasing amounts of the compound are being detected in the aquatic environment. The assessment of the environmental risk of pharmaceuticals is hindered by their very low concentrations and specific modes of action and thus relevant exposure scenarios and sensitive endpoints are needed. Thus, this work aimed to study the long-term effect of OTC exposure in zebrafish (at behavior and biochemical levels) and associated bacterial communities (fish gut and water bacterial communities). Results revealed that at behavioral level, boldness increase (manifested by increased exploratory behavior of a new environment) was observed in fish exposed to low OTC concentrations. Moreover, changes in fish swimming pattern were observed in light periods (increased stress response: hyperactivity and freezing) probably due to photo-sensibility conferred by OTC exposure. Effects at biochemical level suggest that long-term exposure to OTC interfere with cellular energy allocation mainly by reducing lipids levels and increasing energy consumption. Moreover, evidences of oxidative damage were also observed (reduced levels of TG, GST and CAT). The analysis of water and gut microbiome revealed changes in the structure and diversity of bacterial communities potentially leading to changes in communities&apos; biological function. Some of the effects were observed at the lowest concentration tested, 0.1 mu g/L. which is a concentration already detected in the environment and thus clearly demonstrating the need of a serious ecotoxicological assessment of OTC effects on non-target organisms. (C) 2019 Elsevier Ltd. All rights reserved.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10620 - Other biological topics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Chemosphere

ISSN

0045-6535

e-ISSN

—

Volume of the periodical

222

Issue of the periodical within the volume

neuveden

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

333-344

UT code for WoS article

000462109200039

EID of the result in the Scopus database

2-s2.0-85060692567