Impact of increasing temperatures on neuroendocrine and molecular responses of skeletal muscle and liver in fish: A comprehensive review

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DANTAGNAN DANTAGNAN, HERMAN PATRICIO
VALDEBENITO ISLER, NEMESIO IVAN
FIGUEROA VILLALOBOS, ELIAS GUSTAVO
HERNANDEZ ARIAS, ADRIAN JESUS
Sáez-Arteaga, Alberto
Viegas, Ivan
Palma, Mariana
Dantagnan, Patricio P.
Valdebenito, Iván
Villalobos, Elías Figueroa
Hernández Arias, Adrián J.
Guerrero-Jiménez, Jimena
Metón, Isidoro
Heyser, Cristopher A.
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10.1016/j.aqrep.2024.102448
Keywords
Aquaculture - Climate Change - Liver - Neuroendocrine - Skeletal Muscle - Thermal Stress
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Abstract
Recent projections suggest that food security may face threats due to climate change and population growth. Global warming is altering ocean temperatures, impacting productivity and aquatic ecosystems. This review delves into the impact of heat stress on fish aquaculture, focusing on the neuroendocrine system, controlled by the hypothalamic-pituitary-interrenal (HPI) axis. This axis regulates stress responses via cortisol and catecholamines, influencing energy metabolism and stress adaptation. The review discusses molecular adaptations in skeletal muscle and liver, affecting gene expression related to growth and energy metabolism. On the other hand, heat stress provokes notable molecular responses, altering the expression of genes involved in glycolysis and oxidative phosphorylation, and hormonal pathways like growth hormone and insulin growth factors, which are vital for metabolic regulation and muscle growth. In summary, this review provides insights into the neuroendocrine and molecular mechanisms underlying fish responses to thermal stress, emphasizing the importance of skeletal muscle and liver tissues in mediating physiological adaptations. Furthermore, it analyzes the implications for protein synthesis, cellular signaling pathways, oxidative stress, and enzymatic responses in aquatic organisms, highlighting the importance of understanding these molecular adaptations to develop effective mitigation strategies that ensure the sustainability of aquaculture systems amidst changing conditions. © 2024 Elsevier B.V., All rights reserved.
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Keywords
Aquaculture , Climate Change , Liver , Neuroendocrine , Skeletal Muscle , Thermal Stress
Citation
10.1016/j.aqrep.2024.102448