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Abstract Title:

Luteolin, quercetin, genistein and quercetagetin inhibit the effects of lipopolysaccharide obtained from Porphyromonas gingivalis in H9c2 cardiomyoblasts.

Abstract Source:

Cell Mol Biol Lett. 2017 ;22:19. Epub 2017 Sep 4. PMID: 28878808

Abstract Author(s):

Gloria Gutiérrez-Venegas, Alfredo Torras-Ceballos, Juan Arturo Gómez-Mora, Berenice Fernández-Rojas

Article Affiliation:

Gloria Gutiérrez-Venegas

Abstract:

BACKGROUND: One of the microorganisms from dental plaque associated with severe inflammatory responses in infectious endocarditis is Porphyromonas gingivalis. It is a Gram-negative bacteria harvested from chronic periodontitis patients. Lipopolysaccharide (LPS) obtained from P. gingivalis promotes the expressions of interleukin-1 (IL-1), IL-6 and tumor necrosis factor alpha (TNF-α). Flavonoids are thought to participate in processes that control inflammation, such as the expression of cyclooxygenase-2 (COX-2).

METHODS: We investigated the effects of luteolin, quercetin, genistein and quercetagetin on cardiomyoblasts treated with LPS alone or in combination with following inhibitors p38 (SB203580), ERK (PD98059), JNK (SP600125) and PKC (Calphostin C) for 1 h. The kinase activation and COX-2 expression levels were determined at the gene and protein levels.

RESULTS: These flavonoids are considered to inhibit the activation of mitogen-activated protein kinase (MAPK) and the degradation of inhibitor of kappa B-alpha (IκB-α). They also play a role in COX-2 expression.

CONCLUSION: We conclude that the tested flavonoids inhibit inflammatory responses induced by LPS in H9c2 cells.

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