Gradual increase of temperature trigger metabolic and oxidative responses in plasma and body tissues in the Antarctic fish Notothenia rossii.

Autor: Guillen AC; Department of Cell Biology, Federal University of Parana, Curitiba, Parana, Brazil. angelacguillen@gmail.com., Borges ME; Department of Ecology, Federal University of Parana, Curitiba, Parana, Brazil., Herrerias T; Faculty Guairacá, Guarapuava, Brazil., Kandalski PK; Department of Cell Biology, Federal University of Parana, Curitiba, Parana, Brazil., de Souza MRDP; Department of Cell Biology, Federal University of Parana, Curitiba, Parana, Brazil., Donatti L; Department of Cell Biology, Federal University of Parana, Curitiba, Parana, Brazil.
Jazyk: angličtina
Zdroj: Fish physiology and biochemistry [Fish Physiol Biochem] 2022 Apr; Vol. 48 (2), pp. 337-354. Date of Electronic Publication: 2022 Feb 11.
DOI: 10.1007/s10695-021-01044-2
Abstrakt: Antarctica is considered a thermally stable ecosystem; however, climate studies point to increases in water temperatures in this region. These thermal changes may affect the biological processes and promote metabolic changes in the adapted organisms that live in this region, rendering the animals more vulnerable to oxidative damage. This study assessed the effect of acclimation temperature on the levels of stress response markers in plasma, kidney, gill, liver, and brain tissues of Notothenia rossii subjected to gradual temperature changes of 0.5 °C/day until reaching temperatures of 2, 4, 6, and 8 °C. Under the effect of the 0.5 °C/day acclimation rate, gill tissue showed increased glutathione-S-transferase (GST) activity; kidney tissue showed increased H + -ATPase activity. In the liver, there was also an increase in GSH. In plasma, gradual decreases in the concentrations of total proteins and globulins were observed. These responses indicate a higher production of reactive oxygen species ROS, an imbalance in energy demand, and a lack in protein synthesis. Gradual increase in temperature may cause opposite responses to the thermal shock model in N. rossii.
(© 2022. The Author(s), under exclusive licence to Springer Nature B.V.)
Databáze: MEDLINE
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