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Article Publish Status: FREE
Abstract Title:

Luteolin suppresses lipopolysaccharide‑induced cardiomyocyte hypertrophy and autophagy in vitro.

Abstract Source:

Mol Med Rep. 2019 Mar ;19(3):1551-1560. Epub 2019 Jan 2. PMID: 30628693

Abstract Author(s):

Xing Li, Jian Liu, Jianfeng Wang, Donghua Zhang

Article Affiliation:

Xing Li

Abstract:

Luteolin (LTL) serves essential roles in a wide variety of biological processes. Lipopolysaccharide (LPS) can lead to myocardial hypertrophy and autophagy. However, the roles of LTL on LPS‑induced cardiomyocyte hypertrophy and autophagy in rat cardiomyocytes have not yet been fully elucidated. In the present study, the morphology of cultured rat cardiomyocytes was observed under an inverted microscope. Cell viability was detected by MTT assay. α‑Actinin and microtubule‑associated protein 1 light chain 3 (LC3) expression levels were measured by immunofluorescence assay. In addition, the expression levels of atrial natriuretic peptide/brain natriuretic peptide (ANP/BNP), LC3, and autophagy‑ and Wnt signaling pathway‑associated genes were analyzed by reverse transcription‑quantitative polymerase chain reaction or western blot assays. The results indicated that LTL increased the cell viability of cardiomyocytes treated with LPS. LTL decreased the expression of cardiac hypertrophy associated markers (ANP and BNP). LTL decreased α‑actinin and LC3 expression levels in LPS‑treated cardiomyocytes. It was also demonstrated that LTL suppressed the mRNA and protein expression levels of LPS‑mediated autophagy and Wnt signaling pathway‑associated genes. In addition, it was demonstrated that silencing of β‑catenin inhibited LPS‑induced cardiomyocyte hypertrophy and the formation of autophagosomes. Thus, the present study suggested that LTL protected against LPS‑induced cardiomyocyte hypertrophy and autophagy in rat cardiomyocytes.

Study Type : In Vitro Study

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