n/a
Abstract Title:

Protective effects of luteolin against oxidative stress and mitochondrial dysfunction in endothelial cells.

Abstract Source:

Nutr Metab Cardiovasc Dis. 2020 Jun 9 ;30(6):1032-1043. Epub 2020 Mar 9. PMID: 32402583

Abstract Author(s):

Hsiu-I Chen, Wei-Syun Hu, Meng-Yu Hung, Hsiu-Chung Ou, Su-Hua Huang, Pei-Tzu Hsu, Cecilia-Hsuan Day, Kuan-Ho Lin, Vijaya P Viswanadha, Wei-Wen Kuo, Chih-Yang Huang

Article Affiliation:

Hsiu-I Chen

Abstract:

BACKGROUND AND AIMS: Luteolin is a common flavonoid that is abundantly present in various edible plants, it is known to exhibit beneficial effects on cardiovascular system. However, the mechanisms which underlie the protective effects of luteolin on endothelial cell damage caused by oxidative stress remains unclear. The purpose of this study is to test the hypothesis which states that luteolin protects against HO-induced oxidative stress via modulating ROS-mediated P38 MAPK/NF-κB and calcium-evoked mitochondrial apoptotic signalling pathways.

METHODS AND RESULTS: Human umbilical vein endothelial cells (HUVECs) were pretreated with luteolin prior to being stimulated by 600 μM HOfor another 24 h. The expression of native and phosphorylated-P38, IκB, NF-κB, native eNOS, phosphorylated-eNOS, iNOS and several apoptosis-related proteins were analyzed by Western blot. In addition, intracellular calcium was determined by fura-2 AM and mitochondrial membrane potential was examined by using JC1. Using the data gathered, we found indications that HOinduced P38 MAPK/NF-κB activation. HOdownregulated the expression of eNOS and upregulated iNOS, which in turn contribute to an elevated NO generation and protein nitrosylation. However, pretreatment with luteolin markedly reversed all of these alterations dose-dependently. Additionally, an intracellular calcium rise and subsequent mitochondrial membrane potential collapse, P53 phosphorylation, reduced BcL-2/Bax ratio in the mitochondrial membrane, release cytochrome c from mitochondria, leading to the subsequent activation of caspase 3 activation by HOwere all markedly suppressed in the presence of luteolin.

CONCLUSION: Results from this study may provide the possible molecular mechanisms underlying cardiovascular protective effects of luteolin.

Study Type : In Vitro Study

Print Options


Key Research Topics

Sayer Ji
Founder of GreenMedInfo.com

Subscribe to our informative Newsletter & get Nature's Evidence-Based Pharmacy

Our newsletter serves 500,000 with essential news, research & healthy tips, daily.

Download Now

500+ pages of Natural Medicine Alternatives and Information.

This website is for information purposes only. By providing the information contained herein we are not diagnosing, treating, curing, mitigating, or preventing any type of disease or medical condition. Before beginning any type of natural, integrative or conventional treatment regimen, it is advisable to seek the advice of a licensed healthcare professional.

© Copyright 2008-2021 GreenMedInfo.com, Journal Articles copyright of original owners, MeSH copyright NLM.