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04 March 2019 : Animal Research  

Bulleyaconitine A Effectively Relieves Allergic Lung Inflammation in a Murine Asthmatic Model

Xiaodong Zhan1ACEF*, Wenqi Zhang1BC, Tian Sun1B, Yuling Feng1BF, Yilong Xi2ACEG, Yuxin Jiang1ACDEG, Xiaoniu Tang1BF

DOI: 10.12659/MSM.915427

Med Sci Monit 2019; 25:1656-1662

Abstract

BACKGROUND: Bulleyaconitine A (BLA) has been widely used as analgesic against chronic inflammatory pain in China. However, its potential therapeutic role in asthma remains unclear. The purpose of this study was to investigate the effect of BLA on airway inflammation in mice with allergic asthma.

MATERIAL AND METHODS: Specific-pathogen-free (SPF) female Balb/c mice were randomly divided into the following 6 groups: (1) Control group (NC), (2) Asthma group (AS), (3) BLA-L group, (4) BLA-M group, (5) BLA-H group, and (6) Dexamethasone group. An asthma mouse model was established by administration of ovalbumin (OVA) and mice were sacrificed within 24 h after the last challenge. Enzyme-linked immunosorbent assay (ELISA) method was used to determine the relative expression levels of IgE and IgG in mouse serum. In addition, bronchoalveolar lavage fluid (BALF) was collected and IL-4, TNF-α, and MCP-1 levels were determined by ELISA. Furthermore, eosinophils, lymphocytes, and macrophages in BALF were classified and analyzed, and inflammatory cell infiltration in the airways of mice was determined by hematoxylin-eosin (HE) staining. The expression of NF-κB1 and PKC-δ in mouse lung tissue was determined by Western blot analysis.

RESULTS: The levels of serum IgE and IgG in BLA- or Dex- treated mice were significantly reduced compared to those in the asthma (AS) group (P<0.01), whereas the levels of cytokines IL-4, TNF-α, and MCP-1 were significantly decreased (P<0.01). HE-staining showed that BLA significantly reduced inflammatory cell infiltration and mucus secretion in lung tissue. Moreover, BLA inhibited the expression of NF-κB1 and PKC-d via the NF-κB signaling pathway in the lung.

CONCLUSIONS: Our data show that BLA activates PKC-δ/NF-κB to reduce airway inflammation in allergic asthma mice.

Keywords: Asthma, Hypersensitivity, NF-kappa B p50 Subunit, Protein Kinase C-delta, Aconitine, Anti-Asthmatic Agents, Bronchoalveolar Lavage Fluid, Chemokine CCL2, Cytokines, Eosinophils, Interleukin-4, Lung, Ovalbumin

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750