Title:Fructo-oligosaccharides Ameliorate Intestinal Mechanical Barrier Injury
in Piglets Induced by Soybean Antigen in vitro and in vivo
Volume: 24
Issue: 3
Author(s): Mengmeng Mi, Meinan Chang, Yihong Huang, Jinpeng Zhao, Li Pan, Nan Bao, Guixin Qin and Yuan Zhao*
Affiliation:
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
Keywords:
Fructo-oligosaccharide, β-conglycinin, glycinin, intestinal barrier function, weaned piglet, D-lactic acid, alkaline phosphatase (AP).
Abstract:
Background: Fructose oligosaccharides (FOS) have been shown to reduce soybean antigeninduced
hypersensitivity in piglets, but their effects on intestinal epithelial barrier function have not
been characterized. Therefore, this study aimed to determine the effects of FOS on intestinal barrier
injury induced by soybean antigen in piglets in vitro and in vivo.
Methods: We studied the protective effects of FOS against mechanical barrier dysfunction induced
using β-conglycinin or glycinin in porcine intestinal epithelial cells (IPEC-J2), and measured the serum
concentrations of diamine oxidase (DAO), D-lactic acid, and endotoxin, and the expression of tight
junction (TJ) proteins, in piglets.
Results: We found that FOS concentration dependently increases cell activity, trans-epithelial electrical
resistance, and TJ protein expression (P < 0.05) and reduces alkaline phosphatase (AP) activity (P
< 0.05) in vitro. In addition, the serum DAO, D-lactic acid, and endotoxin concentrations were reduced
by FOS administration in piglets (P < 0.05). Both in vitro and in vivo, the expression levels of TJ proteins
(zona occludens 1 and occludin) were increased significantly by FOS (P < 0.05).
Conclusion: Therefore, FOS protect against intestinal injury induced by soybean antigen in piglets,
which may provide a basis for the prevention of allergy.