Inhibition of oxidative stress and autophagy by arbutin in lipopolysaccharide-induced myocardial injury

Background: Sepsis is a syndrome characterized by a systemic inflammatory response. Arbutin (Ar) is an active natural product known for its bactericidal and anti-inflammatory effects. Many studies have reported the diverse pharmacological actions of Ar, but there is no relevant research on the effec...

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Published in:Pharmacognosy Magazine 2019-07, Vol.15 (63), p.507-513
Main Authors: Zhang, Beibei, Zeng, Mengnan, Li, Benke, Wang, Yangyang, Kan, Yuxuan, Wang, Shengchao, Meng, Yijia, Gao, Jiji, Feng, Weisheng, Zheng, Xiaoke
Format: Article
Language:English
Subjects:
Anti-inflammatory agents
Autophagy
Autophagy (Cytology)
Backup software
Cardiac function
Cardiomyopathy
Care and treatment
Estrogens
Experiments
Glycosides
Health aspects
Heart diseases
Infection
Inflammation
Kinases
Laboratory animals
Lipopolysaccharides
Metabolites
Mitogens
Mortality
Oxidative stress
Pathogenesis
Prevention
Rodents
Sepsis
Studies
Tumors
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Summary:Background: Sepsis is a syndrome characterized by a systemic inflammatory response. Arbutin (Ar) is an active natural product known for its bactericidal and anti-inflammatory effects. Many studies have reported the diverse pharmacological actions of Ar, but there is no relevant research on the effect of Ar on lipopolysaccharide (LPS)-induced myocardial injury. Objective: The purpose of this study was to investigate the effect of Ar on LPS-induced myocardial injury and its underlying mechanisms. Materials and Methods: The levels of tumor necrosis factor alpha, interleukin 6, cardiac troponin-I, and procalcitonin were detected by ELISA. The levels of phosphorylated c-Jun N-terminal kinase (p-JNK), phosphorylated extracellular regulated protein kinase (p-ERK), and phosphorylated p38 (p-p38) proteins were detected by flow cytometry using Cytometric Bead Array. Western blot was used to detect the expression of autophagy-related and estrogen receptor (ER)-associated proteins. Levels of the oxidative stress-related markers were detected by the cuvette assay. Results: The levels of the inflammatory factors, LC3B, malondialdehyde, p-JNK, and p-p38 were increased in LPS-treated rats, while the ERK, total superoxide dismutase, glutathione peroxidase, p62, and ER-associated proteins were decreased. These effects could be effectively reversed by Ar, which could be blocked by ER antagonist ICI182780. Our previous study found Ar to possess an estrogen-like activity. Conclusion: Ar inhibits the oxidative stress and autophagy and offers protection from the LPS-induced myocardial injury via the ER pathway.
ISSN:0973-1296
0976-4062
DOI:10.4103/pm.pm_552_18