Microplastics exposure causes negligible effects on the oxidative response enzymes glutathione reductase and peroxidase in the oligochaete Tubifex tubifex

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http://hdl.handle.net/10138/317219

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Scopetani , C , Esterhuizen , M , Cincinelli , A & Pflugmacher , S 2020 , ' Microplastics exposure causes negligible effects on the oxidative response enzymes glutathione reductase and peroxidase in the oligochaete Tubifex tubifex ' , Toxics , vol. 8 , no. 1 , 14 . https://doi.org/10.3390/toxics8010014

Title: Microplastics exposure causes negligible effects on the oxidative response enzymes glutathione reductase and peroxidase in the oligochaete Tubifex tubifex
Author: Scopetani, Costanza; Esterhuizen, Maranda; Cincinelli, Alessandra; Pflugmacher, Stephan
Contributor: University of Helsinki, Ecosystems and Environment Research Programme
University of Helsinki, Helsinki Institute of Sustainability Science (HELSUS)
University of Helsinki, Ecosystems and Environment Research Programme
Date: 2020-02-14
Language: eng
Number of pages: 8
Belongs to series: Toxics
ISSN: 2305-6304
URI: http://hdl.handle.net/10138/317219
Abstract: Microplastics (MPs) are emerging pollutants, which are considered ubiquitous in aquatic ecosystems. The effects of MPs on aquatic biota are still poorly understood, and consequently, there is a need to understand the impacts that MPs may pose to organisms. In the present study, Tubifex tubifex, a freshwater oligochaete commonly used as a bioindicator of the aquatic environment, was exposed to fluorescent polyethylene microspheres (up to 10 µm in size) to test whether the oxidative stress status was affected. The mortality rate of T. tubifex, as well as the activities of the oxidative stress status biomarker enzymes glutathione reductase and peroxidase, were assessed. In terms of oxidative stress, no significant differences between the exposure organisms and the corresponding controls were detected. Even though the data suggest that polyethylene MPs and the selected concentrations did not pose a critical risk to T. tubifex, the previously reported tolerance of T. tubifex to environmental pollution should be taken into account and thus MPs as aquatic pollutants could still represent a threat to more sensitive oligochetes.
Subject: BIOACCUMULATION
BIOTRANSFORMATION
CADMIUM
CERATOPHYLLUM-DEMERSUM
DAPHNIA-MAGNA
INDUCTION
LIPID-PEROXIDATION
MARINE-ENVIRONMENT
STRESS
TOXICITY
Tubifex tubifex
aquatic oligochetes
freshwater environments
glutathione reductase
microplastic
microplastic exposure
mortality
oxidative stress
peroxidase
polyethylene
1172 Environmental sciences
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