Effect of aluminum phosphate gel and Kangfuxin on esophageal pathology and IL-8 and PGE2 expressions in a rat model of reflux esophagitis
- VernacularTitle:磷酸铝凝胶、康复新液对溶血卵磷脂相关反流性食管炎模型大鼠食管组织学和IL-8、PGE2的影响
- Author:
Hailing LIN
1
;
Guojian LI
;
Jizhou WU
Author Information
1. 广西医科大学附属肿瘤医院内镜室
- Keywords:
reflux esophagitis;
lysolecithin;
hydrochloric acid;
interleukin-8;
PGE2;
Kangfuxin;
aluminum phosphate gel;
rat
- From:
Journal of Southern Medical University
2015;(4):573-577
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the effect of aluminum phosphate gel and Kangfuxin on esophageal pathology and expressions of interleukin-8 (IL-8) and prostaglandin E2 (PGE2) in rats with reflux esophagitis and explore the possible mechanisms. Method Sixty SD rats were randomized into aluminum phosphate gel group (n=10), Kangfuxin group (n=10), aluminum phosphate gel+Kangfuxin group (n=10), model group (n=20), and control group (n=10). Except for those in the control group, all the rats were subjected to infusion of diluted lysolecithin with hydrochloric acid in the esophagus for 14 days. Ten rats in the model group and those in the control group were sacrificed to examine the pathological changes and contents of IL-8 and PGE2 in the esophagus using optical and electron microscopes and radioimmunoassay. The next day the rest rats were given corresponding treatments (saline in model group) administered into the esophagus on a daily basis for 14 days, after which esophageal pathologies and IL-8 and PGE2 contents were examined. Results The model rats showed obvious esophageal pathologies including inflammatory cell infiltration, vacuolar degeneration of the epithelial cells, esophageal erosion and even ulceration, with severe detachment of the epithelial cells. The rats in all the intervention groups showed lessened esophageal pathologies and lowered esophageal IL-8 and PGE2 contents compared with those in the model group. Esophageal mucosal injury index and IL-8 and PGE2 contents were all significantly lower in rats receiving combined treatment with aluminum phosphate and Kangfuxin than in those receiving either of the treatments (P<0.05). Conclusion Both Kangfuxin and aluminum phosphate gel are effective in the treatment for reflux esophagitis induced by lysolecithin and hydrochloric acid, and their therapeutic effects are achieved possibly by reducing IL-8 and PGE2 levels in the esophagus.
