Intramedullary nailing of the femur and the systemic activation of monocytes and neutrophils

World Journal of Emergency Surgery

Luke PH Leenen¹  Leo Koenderman²  Falco Hietbrink¹ 

[1] Department of Surgery, University Medical Center Utrecht, the Netherlands;Department of Respiratory Medicine, University Medical Center Utrecht, the Netherlands

关键词: tissue damage;    neutrophils;    ARDS;    Trauma;   

Others  :  792647
DOI  :  10.1186/1749-7922-6-34

 received in 2011-08-15, accepted in 2011-10-31,  发布年份 2011

【 摘 要 】

Background

Trauma such as found patients with femur fractures, induces a systemic inflammatory response, which ranges from mild SIRS to ARDS. Neutrophils (i.e. PMN) play an important role in the pathogenesis of this inflammatory condition. Additional activation of PMNs during intramedullary nailing (IMN) is thought to act as a second immunological hit. Damage control orthopedics has been developed to limit this putative exacerbation of the inflammatory response. The hypothesis is tested that IMN exacerbates systemic inflammation, thereby increasing the risk for ARDS.

Methods

Thirty-eight trauma patients who required IMN for femur fracture were included. The development of SIRS and ARDS was recorded. Blood samples were taken prior and 18 hours after IMN. Inflammatory response was analyzed by changes in plasma IL-6 levels, monocyte (HLA-DR) and PMN phenotype (MAC-1 and responsiveness for the innate immune stimulus fMLP in the context of active FcγRII).

Results

Plasma IL-6 was significantly enhanced in severely injured patients compared to patients with isolated femur fractures and matched controls (P = 0.005; P = 0.018). This enhanced inflammatory tone was associated with a lower percentage HLA-DR positive monocytes (P = 0.002). The systemic PMN compartment was activated, characterized by an increased MAC-1 expression and a significantly decreased sensitivity for the innate stimulus fMLP Interestingly the PMN compartment was not affected by IMN.

Conclusions

Multitrauma patients were characterized by a marked activation of the systemic inflammatory response, associated with a systemic activation of the monocyte and PMN compartments. IMN particularly affected the monocyte arm of the systemic innate immune system.

【 授权许可】

   
2011 Hietbrink et al; licensee BioMed Central Ltd.

【 图 表 】

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