Vagotomy Decreases the Neuronal Activities of Medulla Oblongata and Alleviates Neurogenic Inflammation of Airways Induced by Repeated Intra-Esophageal Instillation of HCl in Guinea Pigs

被引:18
作者
Chen, Zhe [1 ]
Chen, Hui [2 ]
Chen, Fagui [1 ]
Gu, Dachuan [2 ]
Sun, Lejia [2 ]
Zhang, Weitao [2 ]
Fan, Linfeng [2 ]
Lin, Yong [3 ]
Dong, Rong [2 ]
Lai, Kefang [1 ]
机构
[1] Guangzhou Med Univ, Guangzhou Inst Resp Dis, Affiliated Hosp 1, State Key Lab Resp Dis, 151 Yanjiang Rd, Guangzhou, Guangdong, Peoples R China
[2] Southeast Univ, Sch Med, 87 Dingjiaqiao, Nanjing 210009, Jiangsu, Peoples R China
[3] Nanjing Chest Hosp, Nanjing, Jiangsu, Peoples R China
基金
中国国家自然科学基金;
关键词
Gastroesophageal reflux; Airway inflammation; Substance P; C-fos; Vagotomy; SUBSTANCE-P; GASTROESOPHAGEAL-REFLUX; CHRONIC COUGH; BRAIN-STEM; ASTHMA;
D O I
10.33549/physiolres.933574
中图分类号
Q4 [生理学];
学科分类号
071003 ;
摘要
Neuronal activity in the medulla oblongata and neurogenic inflammation of airways were investigated in a guinea pig model induced by repeated intra-esophageal instillation of hydrochloric acid (HCl) after vagotomy. Unilateral vagotomy was performed in the vagotomy group, while a sham-operation was performed in the sham group. Operation was not conducted in sham control group. Airway inflammation was observed with hematoxylin and eosin (HE) staining. C-fos protein was measured by immunohistochemistry (IHC) and Western blot (WB). Substance P was examined by IHC and enzyme-linked immuno sorbent assay (ELISA). Airway microvascular permeability was detected by evans blue dye (EBD) fluorescence. Inflammation of airway was observed in the trachea and bronchi after chronic HCl perfusion into the lower esophagus, and was alleviated after unilateral vagotomy. C-fos expression in the medulla oblongata was lower in the vagotomy group compared to the sham control and sham groups. Substance P-like immunoreactivity (SP-li), concentration and microvascular leakage in airway were lower in the vagotomy group than that in the other groups. Our results suggest that vagotomy improved neurogenic inflammation of airways and decreased neuronal activities, the afferent nerves and neurons in medulla oblongata may be involved in neurogenic inflammation of airways mediated by esophageal-bronchial reflex.
引用
收藏
页码:1021 / 1028
页数:8
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