Study on JNK/AP-1 signaling pathway of airway mucus hypersecretion of severe pneumonia under RSV infection

作者：Li, X. -M.^*; Sun, S. -Z.; Wu, F. -L.; Shi, T.; Fan, H. -J.; Li, D. -Z.

来源：European Review for Medical and Pharmacological Sciences, 2016, 20(5): 853-857.

• Respiratory syncytial virus
• Severe pneumonia
• Airway mucus hypersecretion
• JNK/AP-1 signaling pathway
• Mucin MUC5AC

OBJECTIVE: To investigate the JNK/AP-1 signaling pathway of airway mucus hypersecretion of severe pneumonia under respiratory virus (RSV) infection.
PATIENTS AND METHODS: Total of 56 severe pneumonia children under RSV infection were selected. Reverse transcription polymerase chain reaction (RT-PCR) was performed to measure the expression quantity of MUC5B mRNA and MUC5AC mRNA, and ELISA was used to measure the expression quantity of MUC5AC and MUC5B proteins. Following that, the children were divided into airway mucus hypersecretion group (n = 37) and non-hypersecretion group (n = 19). Western blotting was performed to detect the expression levels of JNK1/2, p-JNK1/2 and AP-1 proteins.
RESULTS: Expression of MUC5AC and MUC5B proteins, and MUC5AC mRNA and MUC5B mRNA in the airway mucus hypersecretion group were significantly higher than those in the non-hypersecretion group (p < 0.05). The expression levels of JNK1/2, p-JNK1/2 and AP-1 proteins in airway mucus hypersecretion group were higher than those in the non-hypersecretion group (p < 0.05).
CONCLUSIONS: MUC5AC and MUC5B can be used as marker molecules of airway mucus hypersecretion. Airway mucus hypersecretion of severe pneumonia induced by RSV might be related to the activation of JNK/AP-1 signaling pathway.

• 出版日期2016-3
• 单位山东省立医院; 山东大学; 滨州医学院