Effects of heat stress on biochemical parameters and heat shock protein family A (Hsp70) member 5 (HSPA5) mRNA expression in rainbow trout (Oncorhynchus mykiss)

These results indicate that heat stress causes oxidative damage, decreases the Ca2+, Mg2+, PO43– and Glu content of serum and induces HSPA5 mRNA expression

Binpeng Xia; Zhe Liu; Yanjing Zhou; Yongjie Wang; Jinqiang Huang; Yongjuan Li; Yujun Kang; Jianfu Wang; Xiaoxia Liu

2018

Scholarcy highlights

  • Rainbow trout is a cold-water species of salmonid, and high temperatures are a significant threat to its aquaculture
  • In order to understand the degree of the heat stress response and the mechanisms involved, full-sibling inbred O. mykiss individuals were sampled at 18, 21, 23, 24, 25 and 26°C to investigate changes in some serum biochemical parameters, as well as in the mRNA expression of heat shock protein family A member 5) in different tissues
  • At 21°C, there was a significant increase in the spleen macrophage respiratory burst and a significant decrease in superoxide dismutase activity compared with 18°C
  • The expression of HSPA5 mRNA responded in a temperature- and tissue-specific manner to heat stress
  • These results indicate that heat stress causes oxidative damage, decreases the Ca2+, Mg2+, PO43– and Glu content of serum and induces HSPA5 mRNA expression

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