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Chinese Journal of Lung Diseases(Electronic Edition) ›› 2020, Vol. 13 ›› Issue (02): 174-178. doi: 10.3877/cma.j.issn.1674-6902.2020.02.010

• Original Article • Previous Articles     Next Articles

Effects of acetylcysteine adjuvant therapy on AECOPD and its influence on airway remodeling, oxidative stress status and levels of serum SP-A, SP-D and CC16

Na Liu1, Ranran Zhao2,()   

  1. 1. Department of Respiratory, Beijing Hepingli hospital, Beijing 100013, China
    2. Beijing Friendship Hospital, Respiratory Medicine Department, Beijing 100050, China
  • Received:2020-01-03 Online:2020-04-25 Published:2021-07-22
  • Contact: Ranran Zhao

Abstract:

Objective

To explore the effects of acetylcysteine adjuvant therapy on the acute exacerbation of chronic obstructive pulmonary disease (AECOPD) and its influence on airway remodeling, oxidative stress and the levels of serum pulmonary surfactant protein-A (SP-A), pulmonary surfactant protein-D (SP-D) and Clara cell protein (CC16).

Methods

A total of 94 patients with AECOPD admitted to our hospital were randomly divided into a control group and an observation group, with 47 cases in each group. The patients in the control group received the basic treatment for AECOPD, and the patients in the observation group received the basic treatment for AECOPD and acetylcysteine adjuvant therapy. Then the efficacies of the two groups were evaluated and compared. The airway remodeling indexes including the ratio of the airway wall thickness to the airway lumen outer diameter (T/D), the airway lumen area (AI), the airway wall area (WA), and the percentage of WA in the total cross-sectional area (WA%), the oxidative stress indicators including superoxide dismutase (SOD), malondialdehyde (MDA), glutathione peroxidase (GSH-PX), and the serum lung surface biochemical markers including SP-A, SP-D and CC16 were measured before and after treatment. And the adverse treatment reactions were recorded.

Results

The total effective rate in the observation group was higher than that of the control group (87.23% vs. 70.21%, P<0.05). Before treatment, there were no statistically significant differences in the airway remodeling-related indexes, the oxidative stress indexes and the serum biochemical markers between the two groups (P>0.05). At 4 weeks of treatment, the T/D, WA, WA%, MDA, SP-A, SP-D and CC16 decreased in the two groups while the AI, GSH-PX and SOD increased. And the T/D, WA, WA%, MDA, SP-A, SP-D and CC16 in the observation group were lower than those of the control group while the AI, GSH-PX and SOD were higher than those of the control group (P<0.05). There was no statistical significant difference in the incidence rate of the adverse reactions between the two groups (6.38% vs. 4.26%, P>0.05).

Conclusion

Acetylcysteine adjuvant therapy for the AECOPD patients can improve the treatment efficacy, enhance the airway remodeling and the oxidative stress status, and reduce the levels of serum SP-A, SP-D and CC16, and it has positive safety.

Key words: Chronic obstructive pulmonary disease, Acute exacerbation, N-acetylcysteine, Oxidative stress, Airway remodeling, Pulmonary surfactant protein

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