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Epigallocatechin 3-gallate attenuates arthritis by regulating Nrf2, HO-1, and cytokine levels in an experimental arthritis model.
Biotechnology and Applied Biochemistry ( IF 3.2 ) Pub Date : 2019-11-19 , DOI: 10.1002/bab.1860
Ahmet Karatas 1 , Adile Ferda Dagli 2 , Cemal Orhan 3 , Hasan Gencoglu 4 , Metin Ozgen 1 , Nurhan Sahin 3 , Kazim Sahin 3 , Suleyman Serdar Koca 1
Affiliation  

Epigallocatechin 3‐gallate (EGCG) is a polyphenol that has been shown to have antioxidant and anti‐inflammatory effects. In this study, collagen‐induced arthritis (CIA) model, in Wistar albino rats, was used to elucidate the effect of EGCG on pathogenetic pathways in inflammatory arthritis. The levels of serum TNF‐α, IL‐17, malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx); the expression levels of tissue heme oxygenase‐1 (HO‐1) and nuclear factor erythroid 2‐related factor 2 (Nrf2); histopathologically, perisynovial inflammation and cartilage‐bone destruction were examined. In the sham group, serum TNF‐α, IL‐17, and MDA levels increased, while SOD, CAT, GPx levels, and the expressions of Nrf2 and HO‐1 decreased. On the other hand, in the EGCG administered groups, serum TNF‐α, IL‐17, and MDA levels improved, while SOD, CAT, GPx levels and the expressions of Nrf2 and HO‐1 increased. Moreover, histopathological analysis has shown that perisynovial inflammation and cartilage‐bone destruction decreased in the EGCG administered groups. These results suggest that EGCG has an antiarthritic effect by regulating the oxidative‐antioxidant balance and cytokine levels in the CIA model, which is a surrogate experimental model of rheumatoid arthritis.

中文翻译:

表没食子儿茶素3-没食子酸酯通过调节实验性关节炎模型中的Nrf2,HO-1和细胞因子水平来减轻关节炎。

表没食子儿茶素3-没食子酸酯(EGCG)是一种多酚,具有抗氧化和抗炎作用。在这项研究中,使用Wistar白化病大鼠中的胶原蛋白诱导的关节炎(CIA)模型来阐明EGCG对炎性关节炎的致病途径的影响。血清TNF-α,IL-17,丙二醛(MDA),超氧化物歧化酶(SOD),过氧化氢酶(CAT),谷胱甘肽过氧化物酶(GPx)的水平;组织血红素加氧酶-1(HO-1)和核因子红系2相关因子2(Nrf2)的表达水平; 在组织病理学上,检查了滑膜周围炎症和软骨骨破坏。在假手术组中,血清TNF-α,IL-17和MDA水平升高,而SOD,CAT,GPx水平下降,Nrf2和HO-1的表达下降。另一方面,在EGCG给药组中,血清TNF-α,IL-17,MDA水平提高,而SOD,CAT,GPx水平以及Nrf2和HO-1的表达增加。此外,组织病理学分析表明,EGCG给药组的滑膜周围炎症和软骨骨破坏减少。这些结果表明,EGCG通过调节CIA模型(一种类风湿关节炎的替代实验模型)中的氧化-抗氧化剂平衡和细胞因子水平而具有抗关节炎作用。
更新日期:2019-11-19
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