Microplastic Fibers Increase Sublethal Effects of AgNP and AgNO3 in Daphnia magna by Changing Cellular Energy Allocation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F21%3A43921926" target="_blank" >RIV/60461373:22320/21:43921926 - isvavai.cz</a>

Výsledek na webu

<a href="https://setac.onlinelibrary.wiley.com/doi/full/10.1002/etc.5136" target="_blank" >https://setac.onlinelibrary.wiley.com/doi/full/10.1002/etc.5136</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/etc.5136" target="_blank" >10.1002/etc.5136</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microplastic Fibers Increase Sublethal Effects of AgNP and AgNO3 in Daphnia magna by Changing Cellular Energy Allocation

Popis výsledku v původním jazyce

The effects of combined exposure to microplastics and contaminants are still not completely understood. To fill this gap, we assessed the effects of polyethylene terephthalate microplastic fibers (MF) (100 mg/L; 360 µm average length) on the toxicity of AgNP (32 nm) and AgNO3 (0.1 – 10 µg Ag/L) to Daphnia magna. Acute immobilization (EC50) and cellular energy allocation (CEA; ratio between available energy and energy consumption) were determined in neonates (&lt;24 h) and juveniles (7 d old), respectively. The 48h-EC50 for AgNP and AgNO3 (2.6 and 0.67 µg Ag/L, respectively) was not affected by MF presence (2.2 and 0.85 µg Ag/L, respectively). No decrease in the available energy was observed, as lipid, carbohydrate, and protein contents were unaffected. However, a significant increase in energy consumption was observed in animals exposed to AgNO3 (250% compared to control) and to the combination of MF with AgNP (170%) and AgNO3 (260%). The exposure to MF alone or in combination with both Ag forms decreased the CEA (values were 55-75% of control values). Our results show that upon short-term exposure (48 h) MF increased Ag toxicity at a subcellular level (i.e., CEA), but not at the individual level (i.e., immobilization). These results highlight the importance of combining different levels of biological organization to fully assess the ecotoxicological effects of plastics in association with environmental contaminants.

Název v anglickém jazyce

Microplastic Fibers Increase Sublethal Effects of AgNP and AgNO3 in Daphnia magna by Changing Cellular Energy Allocation

Popis výsledku anglicky

The effects of combined exposure to microplastics and contaminants are still not completely understood. To fill this gap, we assessed the effects of polyethylene terephthalate microplastic fibers (MF) (100 mg/L; 360 µm average length) on the toxicity of AgNP (32 nm) and AgNO3 (0.1 – 10 µg Ag/L) to Daphnia magna. Acute immobilization (EC50) and cellular energy allocation (CEA; ratio between available energy and energy consumption) were determined in neonates (&lt;24 h) and juveniles (7 d old), respectively. The 48h-EC50 for AgNP and AgNO3 (2.6 and 0.67 µg Ag/L, respectively) was not affected by MF presence (2.2 and 0.85 µg Ag/L, respectively). No decrease in the available energy was observed, as lipid, carbohydrate, and protein contents were unaffected. However, a significant increase in energy consumption was observed in animals exposed to AgNO3 (250% compared to control) and to the combination of MF with AgNP (170%) and AgNO3 (260%). The exposure to MF alone or in combination with both Ag forms decreased the CEA (values were 55-75% of control values). Our results show that upon short-term exposure (48 h) MF increased Ag toxicity at a subcellular level (i.e., CEA), but not at the individual level (i.e., immobilization). These results highlight the importance of combining different levels of biological organization to fully assess the ecotoxicological effects of plastics in association with environmental contaminants.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Environmental Toxicology and Chemistry (ET&amp;C)

ISSN

0730-7268

e-ISSN

—

Svazek periodika

Neuveden

Číslo periodika v rámci svazku

JUL 2021

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

1-11

Kód UT WoS článku

000675578300001

EID výsledku v databázi Scopus

2-s2.0-85111139716