γ-Oryzanol ameliorates fine dust-induced premature endothelial senescence and dysfunction via attenuating oxidative stress.
Fiche publication
Date publication
août 2023
Journal
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association
Auteurs
Membres identifiés du Cancéropôle Est :
Pr SCHINI-KERTH Valérie
Tous les auteurs :
Shiwakoti S, Gong D, Sharma K, Kang KW, Schini-Kerth VB, Kim HJ, Ko JY, Oak MH
Lien Pubmed
Résumé
Various cardiovascular diseases are associated with endothelial senescence, and a recent study showed that fine dust (FD)-induced premature endothelial senescence and dysfunction is associated with increased oxidative stress. The aim of the present study was to investigate protective effect of rice bran extract (RBE) and its major component of γ-Oryzanol (γ-Ory) against FD-induced premature endothelial senescence. Porcine coronary artery endothelial cells (PCAECs) were treated with FD alone or with RBE or γ-Ory. Senescence-associated β-galactosidase (SA-β-gal) activity, expression of cell cycle regulatory proteins, and oxidative stress levels were evaluated. The results indicated that SA-β-gal activity in the FD-treated PCAECs was attenuated by RBE and γ-Ory. Additionally, γ-Ory inhibited FD-induced cell cycle arrest, restored cell proliferation, and reduced the expression of cell cycle regulatory proteins. γ-Ory also inhibited oxidative stress and prevented senescence-associated NADPH oxidase and LAS activity in FD-exposed ECs suggesting that γ-Ory could protect against FD-induced ECs senescence and dysfunction.
Mots clés
Endothelial senescence, Fine dust, NADPH oxidase, Oxidative stress, γ-Oryzanol
Référence
Food Chem Toxicol. 2023 08 5;:113981