Tea Polyphenols Enhanced the Antioxidant Capacity and Induced Hsps to Relieve Heat Stress Injury

文献类型： 外文期刊

第一作者： Yin, Bin

作者： Yin, Bin;Lian, Ruirui;Li, Zhen;Liu, Yueyue;Yang, Shifa;Huang, Zhongli;Zhao, Zengcheng;Li, Ying;Sun, Chuanxi;Lin, Shuqian;Li, Guiming;Yin, Bin;Liu, Yueyue;Yang, Shifa;Huang, Zhongli;Zhao, Zengcheng;Li, Ying;Lin, Shuqian;Li, Guiming;Lian, Ruirui;Li, Zhen;Sun, Chuanxi;Wan, Renzhong

作者机构：

期刊名称：OXIDATIVE MEDICINE AND CELLULAR LONGEVITY （ 影响因子：6.543； 五年影响因子：7.454 ）

ISSN： 1942-0900

年卷期： 2021 年 2021 卷

页码：

收录情况： SCI

摘要： Keap1-Nrf2-ARE and heat shock proteins (Hsps) are important endogenous protection mechanisms initiated by heat stress to play a double protective role for cell adaptation and survival. H9C2 cells and 80 300-day-old specific pathogen-free chickens were randomly divided into the control and tea polyphenol groups and used to establish a heat stress model in vitro and in vivo. This task was conducted to explore the protection and mechanism of tea polyphenols in relieving thermal injury. A supplement with 10 mu g/mL tea polyphenols could effectively relieve the heat damage of H9C2 cells at 42 degrees C. Accordingly, weaker granular degeneration, vacuolar degeneration, and nucleus deep staining were shown. A strong antioxidant capacity was manifested in the upregulation of the total antioxidant capacity (T-AOC) (at 5 h, P < 0.05), Hemeoxygenase-1 mRNA (at 2 h, P < 0.01), superoxide dismutase (SOD) (at 2, 3, and 5 h, P < 0.05), and Nrf2 (at 0 and 5 h, P < 0.01). A high expression of Hsps was reflected in CRYAB at 3 h; Hsp27 at 0, 2, and 3 h (P < 0.01); and Hsp70 at 3 and 5 h (P < 0.01). The supplement with 0.2 g/L tea polyphenols in the drinking water also had a good effect in alleviating the heat stress damage of the myocardial cells of hens at 38 degrees C. Accordingly, light pathological lesions and downregulation of the myocardial injury-related indicators (LDH, CK, CK-MB, and TNF-alpha) were shown. The mechanism was related to the upregulation of T-AOC (at 0 h, P < 0.05), GSH-PX (at 0.5 d, P < 0.01), SOD (at 0.5 d), and Nrf2 (at 0 d with P < 0.01 and 2 d with P < 0.05) and the induced expression of CRYAB (at 0.5 and 2 d), Hsp27 (at 0, 0.5, and 5 d), and Hsp70 (at 0 and 0.5 d). In conclusion, the tea polyphenols enhanced the antioxidant capacity and induced Hsps to relieve heat stress injury.

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