Journal
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Volume 150, Issue -, Pages 190-198Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2017.12.045
Keywords
Takifugu obscurus; Thermal stress; Oxidative stress; DNA damage
Categories
Funding
- Marine Fisheries Technology and Industry Development Special Projects of Guangdong Province [A201501B14]
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Water temperature is an important environmental factor that affects physiology and biochemical activities of fish. In this study, we investigated of high temperature on biochemical parameters, oxidative stress, DNA damage and apoptosis of pufferfish. Thermal stress could significantly increase the levels of AST, ALT, LDH, GLU and TG, whereas the levels of ALP and TP decrease significantly. In addition, thermal stress also decreased total blood cell count, inhibited cell viability, and subsequently lead to DNA damage and apoptosis. The mRNA levels of p53, caspase-9 and caspase-3 were up-regulated under thermal stress. These results suggested that caspase-dependent and p53 signaling pathways could play important roles in thermal stress-induced apoptosis in fish. Furthermore, the gene expression of SOD, CAT, HSP90 and C3 were induced by thermal stress. This study provides new insights into the mechanism whereby thermal stress affects physiological responses and apoptosis in pufferfish.
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