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Chinese Journal of Integrative Medicine

, Volume 16, Issue 4, pp 331–336 | Cite as

Shenmai Injection (参麦注射液) inhibiting the extracellular signal regulated kinase-induced human airway smooth muscle proliferation in asthma

  • Li-min Zhao (赵丽敏)
  • Li-jun Ma (马利军)
  • Luo-xian Zhang (张罗献)
  • Ji-zhen Wu (吴纪珍)
Experimental Research

Abstract

Objective

To investigate the relationship between the proliferation of sensitized human airway smooth muscle cells (HASMCs) and the expression of extracellular signal regulated kinase (ERK) and the effect of Shenmai Injection (参麦注射液, SMI) on HASMCs.

Methods

The HASMCs cultured in vitro were divided into three groups: (1) control group; (2) sensitized group: containing 10% asthmatic serum; (3) SMI group: further divided into three different concentration subgroups interferred with 10 μL/mL, 50 μL/mL, and 100 μL/mL SMI, respectively. The proliferation of HASMCs was detected using MTT method, the expression of proliferating cell nucleus antigen (PCNA) in HASMCs was detected using immunocytochemical staining, and the expression of phosphoration-ERK1/2 (p-ERK1/2) protein was detected using Western-blot.

Results

After passive sensitization,: the optical density value (A A490 value) of HASMCs was significantly increased from 0.366±0.086 to 0.839± 0.168 (P<0.05). In addition, the expression of PCNA was significantly increased from 28.7%±5.9% in the control group to 69.8%±7.5% in the sensitized group (P<0.05). At the same time, the expression of p-ERK1/2 in passively sensitized HASMCs was significantly increased compared with the control group (all P<0.05). After application of 10 μL/mL, 50 μL/mL, and 100 μL/mL SMI to the cultured media of passively sensitized group, the A570 value was significantly decreased from 0.839±0.168 to 0.612±0.100, 0.412±0.092, and 0.339±0.077, respectively (P<0.05). Moreover, the expression of PCNA was significantly decreased from 69.8%±7.5% to 57.8%±6.2%, 40.7%±5.4%, and 26.1%±5.2%, respectively. At the same time, the expression of p-ERK1/2 in each SMI group was significantly decreased compared with the sensitized group (all P<0.05).

Conclusion

ERK signal transduction pathway may be involved in the airway remodeling in asthma. The expression of ERK can be inhibited by SMI in a dose-dependent manner, thus preventing the proliferation of HASMCs.

Keywords

Shenmai Injection airway smooth muscle cells extracellular signal regulated kinase airway remodeling 

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Copyright information

© Chinese Association of the Integration of Traditional and Western Medicine and Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Li-min Zhao (赵丽敏)
    • 1
  • Li-jun Ma (马利军)
    • 1
  • Luo-xian Zhang (张罗献)
    • 1
  • Ji-zhen Wu (吴纪珍)
    • 1
  1. 1.Department of Respiratory DiseasesHenan Province People’s HospitalZhengzhouChina

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