Simvastatin regulates CXC chemokine formation in streptococcal M1 protein-induced neutrophil infiltration in the lung

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	Simvastatin regulates CXC chemokine formation in streptococcal M1 protein-induced neutrophil infiltration in the lung
	Zhang, Songen ; Rahman, Milladur ; Zhang, Su ; Qi, Zhongquan ; Herwald, Heiko ; Thorlacius, Henrik ; Qi ZQ(齐忠权)
刊名	http://dx.doi.org/10.1152/ajplung.00422.2010
	2011-06
关键词	GRAM-NEGATIVE SEPSIS ABDOMINAL SEPSIS PULMONARY RECRUITMENT CELL-ACTIVATION LIVER-INJURY IN-VIVO INFLAMMATION MECHANISMS ADHESION STATINS
英文摘要	Swedish Medical Research Council [2009-4872]; Crafoordska stiftelsen; Einar och Inga Nilssons stiftelse; Harald och Greta Jaenssons stiftelse; Greta och Johan Kocks stiftelser; Froken Agnes Nilssons stiftelse; Franke och Margareta Bergqvists stiftelse for; Zhang S, Rahman M, Zhang S, Qi Z, Herwald H, Thorlacius H. Simvastatin regulates CXC chemokine formation in streptococcal M1 protein-induced neutrophil infiltration in the lung. Am J Physiol Lung Cell Mol Physiol 300: L930-L939, 2011. First published March 25, 2011; doi:10.1152/ajplung.00422.2010.-Streptococcus pyogenes of the M1 serotype can cause streptococcal toxic shock syndrome and acute lung injury. Statins exert beneficial effects in septic patients although the mechanisms remain elusive. This study examined effects of simvastatin on M1 protein-provoked pulmonary inflammation and tissue injury. Male C57BL/6 mice were pretreated with simvastatin or a CXCR2 antagonist before M1 protein challenge. Bronchoalveolar fluid and lung tissue were harvested for determination of neutrophil infiltration, formation of edema, and CXC chemokines. Flow cytometry was used to determine Mac-1 expression on neutrophils. Gene expression of CXC chemokines was determined in alveolar macrophages by using quantitative RT-PCR. M1 protein challenge caused massive infiltration of neutrophils, edema formation, and production of CXC chemokines in the lung as well as upregulation of Mac-1 on circulating neutrophils. Simvastatin reduced M1 protein-induced infiltration of neutrophils and edema in the lung. In addition, M1 protein-induced Mac-1 expression on neutrophils was abolished by simvastatin. Furthermore, simvastatin markedly decreased pulmonary formation of CXC chemokines and gene expression of CXC chemokines in alveolar macrophages. Moreover, the CXCR2 antagonist reduced M1 protein-induced neutrophil expression of Mac-1 and accumulation of neutrophils as well as edema formation in the lung. These novel findings indicate that simvastatin is a powerful inhibitor of neutrophil infiltration in acute lung damage triggered by streptococcal M1 protein. The inhibitory effect of simvastatin on M1 protein-induced neutrophil recruitment appears related to reduced pulmonary generation of CXC chemokines. Thus, simvastatin may be a useful tool to ameliorate acute lung injury in streptococcal infections.
语种	英语
出版者	AM J PHYSIOL-LUNG C
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/93282]
专题	医学院－已发表论文
推荐引用方式 GB/T 7714	Zhang, Songen,Rahman, Milladur,Zhang, Su,et al. Simvastatin regulates CXC chemokine formation in streptococcal M1 protein-induced neutrophil infiltration in the lung[J]. http://dx.doi.org/10.1152/ajplung.00422.2010,2011.
APA	Zhang, Songen.,Rahman, Milladur.,Zhang, Su.,Qi, Zhongquan.,Herwald, Heiko.,...&齐忠权.(2011).Simvastatin regulates CXC chemokine formation in streptococcal M1 protein-induced neutrophil infiltration in the lung.http://dx.doi.org/10.1152/ajplung.00422.2010.
MLA	Zhang, Songen,et al."Simvastatin regulates CXC chemokine formation in streptococcal M1 protein-induced neutrophil infiltration in the lung".http://dx.doi.org/10.1152/ajplung.00422.2010 (2011).