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The protective ability and cellular mechanism of Koelreuteria henryi Dummer flower extract against hydrogen peroxide-induced cellular oxidative damage
Tsai, Wen-Che; Chang, Hung-Chi; Yin, Hsin-Yi; Huang, Meng-Chieh; Chandra Agrawal, Dinesh; Wen, Hsiao-Wei.
  • Tsai, Wen-Che; National Chung Hsing University. Department of Food Science and Biotechnology. Taichung. TW
  • Chang, Hung-Chi; Chaoyang University of Technology. Department of Golden-Ager Industry Management. Taichung. TW
  • Yin, Hsin-Yi; National Chung Hsing University. Department of Food Science and Biotechnology. Taichung. TW
  • Huang, Meng-Chieh; National Chung Hsing University. Department of Food Science and Biotechnology. Taichung. TW
  • Chandra Agrawal, Dinesh; Chaoyang University of Technology. Department of Applied Chemistry. Taichung. TW
  • Wen, Hsiao-Wei; National Chung Hsing University. Department of Food Science and Biotechnology. Taichung. TW
Electron. j. biotechnol ; 47: 89-99, sept. 2020. ilus, tab, graf
Article in English | LILACS | ID: biblio-1253101
Responsible library: CL1.1
ABSTRACT

BACKGROUND:

Koelreuteria henryi Dummer is an indigenous plant in Taiwan. The species has been used in traditional folk medicine for the promotion of liver functions and for treating malaria and urethritis. The present study investigated the antioxidant activity of the flower extract of Koelreuteria henryi Dummer. The extraction conditions were optimized by the contents of total phenolic acids and total flavonoids, and antioxidant activity assays. Moreover, an in vitro study for investigating antioxidant activity of K. henryi flower extract was demonstrated by hydrogen peroxide (H2O2)-induced apoptosis.

RESULTS:

K. henryi flower extracted for 150 min showed high contents of total phenolic acids and total flavonoids. In an in vitro model, L929 cells were pretreated with K. henryi flower extract, and then treated with H2O2 to induce oxidative damage. Results demonstrated that H2O2-induced apoptosis was inhibited by the treatment of 200 µg/ml K. henryi flower extract through the mitochondria-mediated pathway and mitogen-activated protein kinase (MAPK) pathway. The caspase 8/9 activity and expression of p-p38 and pERK were repressed by K. henryi flower extract. In addition, the prevention of H2O2-induced apoptosis by K. henryi flower extract activated the nuclear factor-erythroid 2-related factor (Nrf2) stress response pathway to transcript heme oxygenase 1 (HO-1). Also, K. henryi flower extract prevented H2O2-induced apoptosis through HO-1 production, as evident by the use of HO-1 inhibitor.

CONCLUSIONS:

The present study demonstrated that K. henryi flower extract could inhibit the H2O2-induced apoptosis in L929 cells through the activation of the Nrf2/HO-1 pathway.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Plant Extracts / Oxidative Stress / Sapindaceae / Antioxidants Type of study: Prognostic study Language: English Journal: Electron. j. biotechnol Journal subject: Biotechnology Year: 2020 Type: Article Affiliation country: Taiwan Institution/Affiliation country: Chaoyang University of Technology/TW / National Chung Hsing University/TW

Full text: Available Index: LILACS (Americas) Main subject: Plant Extracts / Oxidative Stress / Sapindaceae / Antioxidants Type of study: Prognostic study Language: English Journal: Electron. j. biotechnol Journal subject: Biotechnology Year: 2020 Type: Article Affiliation country: Taiwan Institution/Affiliation country: Chaoyang University of Technology/TW / National Chung Hsing University/TW