Acta Anatomica Sinica ›› 2021, Vol. 52 ›› Issue (5): 720-727.doi: 10.16098/j.issn.0529-1356.2021.05.008

• Cell and Molecules Biology • Previous Articles     Next Articles

Effect of intranasal acupuncture on the pathology of nasal mucosa in rabbits with allergic rhinitis and related regulatory mechanism of transient receptor potential vanillic acid receptor 1-substance P axis#br#

LIU Li-li1 GONG Zheng1 JIAO Lu-lu1 LIU Si-ming1 BIAN Fang-zi2 ZHANG Lin-jing1 LIU Qiao-ping1 YAN Zhan-feng1*#br#   

  1. 1.Department of Otolaryngology, Dongzhimen Hospital of Beijing University of Chinese Medicine, Beijing 100700,China; 2.Department of Otolaryngology, Xi’an Hospital of Traditional Chinese Medicine, Xi’an 710021,China
  • Received:2020-12-15 Revised:2021-02-22 Online:2021-10-06 Published:2021-10-06
  • Contact: YAN Zhan-feng* E-mail:15210682430@163.com

Abstract:

Objective  To investigate the pathological changes of nasal mucosa by intranasal acupuncture,and to explore the possible signal transduction mechanism〓through the distribution and expression of transient receptor potential vanillic acid receptor 1 (TRPV1)-substance P (SP) axis in nasal mucosa of experimental allergic rhinitis.     Methods  An animal model of allergic rhinitis was constructed by ovalbumin and aluminium hydroxide gel treatment. Twenty five New Zealand rabbits were randomly divided into normal group, model group, sham acupuncture group, acupuncture Wai Ying Xiang group and intranasal acupuncture group, with 5 rabbits in each group. To observe the effect of intranasal acupuncture on animal behavior, nasal mucosa pathology, eosinophils (EOS) count and IgE content in arterial blood. In addition, HE staining was used to determine the distribution of EOS in nasal mucosa and immunohistochemistry was used to observe the distribution and expression of TRPV1 and SP in nasal mucosa membrane.     Results  Compared with the model group, the behavioral score of the sham acupuncture group did not decrease significantly, while the behavioral score of the Wai Ying Xiang acupuncture group and the intranasal acupuncture group showed a downward trend, and the decrease degree of the intranasal acupuncture group was more significant. Compared with the normal group, the eosinophil count in the model group increased slightly(P>0.05); Compared with the model group, the number of eosinophils in the intranasal acupuncture group decreased (P>0.05). Compared with the normal group, the serum IgE content in the model group increased  significantly (P<0.05). Compared with the model group, there was no significant change in the sham acupuncture group (P>0.05). Compared with the model group, serum IgE content in the Wai Ying Xiang acupuncture group and the internal acupuncture group decreased significantly (P<0.05), but there was no statistical difference between the internal acupuncture group and the Wai Ying Xiang acpuncture group (P>0.05). HE staining found that eosinophilic distribution increased significantly in the model group and the sham acupuncture group compared with the normal group, and the difference was statistically significant (P<0.05). Compared with the model group, the distribution of eosinophil reduced in the nasal acupuncture group and the Wai Ying Xiang group. The difference was statistically significant (P<0.05). Immunohistochemical found that TRPV1 and SP expressed significantly in the nasal mucosa of the model group and the sham acupuncture group compared with the normal group, the difference was statistically significant (P<0.05). Compared with the model group, TRPV1 and SP expression decreased significantly in the intranasal acupuncture group and the external yingxiang group, the difference was statistically significant (P<0.05).     Conclusion  Intranasal acupuncture can alleviate the nasal symptoms of allergic rhinitis model by reducing the chemotaxis of eosinophils in nasal mucosa and the content of IgE in serum. 

Key words: Intranasal acupuncture, Transient receptor potential vanillic acid receptor 1, Substance P, Allergic rhinitis, Immunohistochemistry, Rabbit

CLC Number: