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Abstract Title:

Tanshinone IIA attenuates cardiac dysfunction in endotoxin-induced septic mice via inhibition of NADPH oxidase 2-related signaling pathway.

Abstract Source:

Int Immunopharmacol. 2015 Sep ;28(1):444-9. Epub 2015 Jul 17. PMID: 26202805

Abstract Author(s):

Libing Huang, Man Zheng, Yudi Zhou, Juan Zhu, Minghui Zhu, Feng Zhao, Suyang Cui

Article Affiliation:

Libing Huang

Abstract:

Cardiac dysfunction is a critical event during sepsis/septic shock. Tanshinone IIA (TIIA), a compound extracted from herb medicine Danshen, has been shown possessing anti-inflammatory and anti-oxidative properties. It is possible, therefore, that treatment with TIIA may attenuate cardiac dysfunction during sepsis/septic shock through inhibition of inflammation. To test this possibility, we preadministrated C57BL/6 mice with TIIA prior to lipopolysaccharide (LPS) challenge. LPS significantly suppressed left ventricular function as evidenced by decreases in EF% and FS% in mice. However, TIIA pretreatment significantly attenuated cardiac dysfunction following LPS challenge. Furthermore, TIIA markedly attenuated the LPS-induced upregulation of circulating tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) levels. Meanwhile, LPS challenge significantly increased myocardial reactive oxygen species (ROS) production, which was attenuated by TIIA. Moreover, TIIA treatment dramatically decreased the level of the Nox2, reduced phosphorylation levels of extracellularsignal-regulated kinase 1/2 (ERK1/2) and p38 mitogen-activated protein kinase (p38 MAPK) expression. In conclusion, TIIA effectively improves cardiac function during endotoxemia in mice. This is attributed to TIIA reducing inflammatory cytokines release and inhibiting the Nox2 signaling during endotoxemia.

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