North American ginseng inhibits myocardial NOX2-ERK1/2 signaling and tumor necrosis factor-α expression in endotoxemia.
Pharmacol Res
; 111: 217-225, 2016 09.
Article
em En
| MEDLINE
| ID: mdl-27317946
ABSTRACT
Sepsis is a systemic inflammatory response to infection with a high mortality but has no specific treatment despite decades of research. North American (NA) ginseng (Panax quinquefolius) is a popular natural health product with anti-oxidant and anti-inflammatory properties. The aim of the present study was to investigate the effects of NA ginseng on pro-inflammatory cytokine expression and cardiac function in endotoxemia, a model of sepsis. Mice were challenged with lipopolysaccharide (LPS) to induce endotoxemia. Myocardial expression of tumor necrosis factor-alpha (TNF-α), a major pro-inflammatory cytokine that causes cardiac dysfunction, was upregulated in mice with endotoxemia, which was accompanied by increases in NOX2 expression, superoxide generation and ERK1/2 phosphorylation. Notably, pretreatment with NA ginseng aqueous extract (50mg/kg/day, oral gavage) for 5days significantly inhibited NOX2 expression, superoxide generation, ERK1/2 phosphorylation and TNF-α expression in the heart during endotoxemia. Importantly, cardiac function and survival in endotoxemic mice were significantly improved. Additionally, pretreatment with ginseng extract inhibited superoxide generation, ERK1/2 phosphorylation and TNF-α expression induced by LPS in cultured cardiomyocytes. We conclude that NA ginseng inhibits myocardial NOX2-ERK1/2-TNF-α signaling pathway and improves cardiac function in endotoxemia, suggesting that NA ginseng may have the potential in the prevention of clinical sepsis.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Extratos Vegetais
/
Transdução de Sinais
/
Fator de Necrose Tumoral alfa
/
Endotoxemia
/
Proteína Quinase 1 Ativada por Mitógeno
/
Miócitos Cardíacos
/
Proteína Quinase 3 Ativada por Mitógeno
/
NADPH Oxidase 2
/
Panax
/
Anti-Inflamatórios
Idioma:
En
Ano de publicação:
2016
Tipo de documento:
Article