Effects of dietary supplementation with Lactobacillus acidophilus on the performance, intestinal physical barrier function, and the expression of NOD-like receptors in weaned piglets

• Published in: PeerJ (San Francisco, CA) Vol. 6; p. e6060
• Main Authors: Wang, Shiqiong, Li, Haihua, Du, Chenhong, Liu, Qian, Yang, Dongji, Chen, Longbin, Zhu, Qi, Wang, Zhixiang
• Format: Journal Article
• Language: English
• Published: United States PeerJ. Ltd 18.12.2018; PeerJ, Inc; PeerJ Inc
• Subjects: Agricultural Science; Animal sciences; Caspase-1; Cellular signal transduction; Cytokines; Dietary supplements; E coli; Gene expression; Health aspects; Hogs; IL-1β; Ileum; Inflammation; Interleukin 18; Intestinal physical barrier; Intestine; Jejunum; Kinases; Lactobacillus acidophilus; Mammals; Metabolism; Molecular Biology; Mucous membrane; NF-κB protein; NLRs; NOD-like receptors; Nod1 protein; Nutrition; Permeability; Protein-serine/threonine kinase; Proteins; Pyrin protein; Receptor mechanisms; Signal transduction; Swine; Tumor necrosis factor-TNF; Veterinary Medicine; Weaned piglet; Zoology; Intestinal physical barrier; NLRs; Weaned piglet; Lactobacillus acidophilus
• DOI: 10.7717/peerj.6060
• ISSN: 2167-8359

supplementation is beneficial to the barrier function of the intestinal physical barrier in piglets. However, the mechanisms underlying this beneficial function remain largely unknown. Here, we investigated the effects of dietary supplementation with on the performance, intestinal physical barrier functioning, and NOD-like receptors (NLRs) expression in weaned piglets. Sixteen weaned piglets were randomly allocated to two groups. The control group received a corn-soybean basal diet, while the treatment group received the same diet adding 0.1% , for 14 days. As a result, dietary supplementation was found to increase the average daily gain (ADG) (  < 0.05), reduced serum diamine oxidase (DAO) activity (  < 0.05), increased the mRNA expression and protein abundance of occludin in the jejunum and ileum (  < 0.01), reduced the mRNA levels of NOD1 (  < 0.01), receptor interacting serine/threonine kinase 2 (RIPK2) (  < 0.05), nuclear factor κB (NF-κB) (  < 0.01), NLR family pyrin domain containing 3 (NLRP3) (  < 0.01), caspase-1 (  < 0.01), interleukin 1β (IL-1β) (  < 0.05) and IL-18 (  < 0.01) in the jejunum tissues of the weaned pigs. The expression of NLRP3 (  < 0.05), caspase-1 (  < 0.01), IL-1β (  < 0.05) and IL-18 (  < 0.05) was also reduced in the ileum tissues of the weaned pigs. These results showed that supplementation improves the growth performance, enhances the intestinal physical barrier function, and inhibits the expression of NOD1 and NLRP3 signaling-pathway-related genes in jejunum and ileum tissues. They also suggest that enhances the intestinal physical barrier functioning by inhibiting IL-1β and IL-18 pro-inflammatory cytokines via the NOD1/NLRP3 signaling pathway in weaned piglets.