Effect of low pH and salinity conditions on the antioxidant response and hepatocyte damage in juvenile olive flounder Paralichthys olivaceus SCIE SCOPUS

Cited 10 time in WEB OF SCIENCE Cited 12 time in Scopus
Title
Effect of low pH and salinity conditions on the antioxidant response and hepatocyte damage in juvenile olive flounder Paralichthys olivaceus
Author(s)
Lee, Dae Won; Choi, Young Ung; Park, Heung Sik; Park, Young-Su; Choi, Cheol Young
KIOST Author(s)
Lee, Dae Won(이대원)Choi, Young Ung(최영웅)Park, Heung Sik(박흥식)
Alternative Author(s)
이대원; 최영웅; 박흥식
Publication Year
2022-03
Abstract
Climate change due to increasing CO2 emissions results in the increase in water temperatures, which is accompanied by the decrease in pH and salinity levels of the ocean. Ocean acidification reflects the gradual pH reduction due to changes in the carbon chemistry, which is caused by the increase in anthropogenic CO2 emissions. The subsequent changes in the water temperatures and carbon chemistry of the oceans affect the survival and distribution of aquatic animals. In this study, we analyzed the levels of cortisol, superoxide dismutase, catalase, and caspase-3 in the plasma of juvenile olive flounder Paralichthys olivaceus under combined hyposalinity and acidification. To evaluate the physiological response to these changes, the superoxide dismutase activity and apoptosis were analyzed in the liver cells. Hyposalinity caused oxidative stress and cell damage, while also activating the antioxidant system. Environmental acidification affected the stress response and antioxidant mechanism of P. olivaceus in the early stage of acclimation but did not appear to exceed hyposalinity stress. These findings suggest that a hyposaline environment may be a stronger environmental stressor than an acidifying environment for P. olivaceus, and will help understand the capacity of P. olivaceus to cope with expected future ocean acidification. © 2022 Elsevier Ltd
ISSN
0141-1136
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/42344
DOI
10.1016/j.marenvres.2022.105562
Bibliographic Citation
Marine Environmental Research, v.175, 2022
Publisher
Elsevier Ltd
Keywords
Antioxidant enzyme; Apoptosis; Fish; Olive flounder; Oxidative stress; pH; Salinity
Type
Article
Language
English
Document Type
Article
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