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-Li; GONG Zheng; JIAO Lu-Lu; LIU Si-Ming; BIAN Fang-Zi; ZHANG Lin-Jing; LIU Qiao-Ping; YAN Zhan-Feng

doi:10.16098/j.issn.0529-1356.2021.05.008

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

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-zi²ZHANG Lin-jing¹ LIU Qiao-ping¹ YAN Zhan-feng^1*#br#

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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

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LIU Li-li GONG Zheng JIAO Lu-lu LIU Si-ming BIAN Fang-zi ZHANG Lin-jing LIU Qiao-ping YAN Zhan-feng. 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#[J]. Acta Anatomica Sinica. 2021, 52(5): 720-727 https://doi.org/10.16098/j.issn.0529-1356.2021.05.008

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