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Open AccessArticle

Dietary Supplementation with Lactobacillus casei Alleviates Lipopolysaccharide-Induced Liver Injury in a Porcine Model

1,†, 1,†, 1, 1, 1, 1, 1,* and 1,2
Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan 430023, China
Department of Animal Science, Texas A & M University, College Station, TX 77843, USA
Author to whom correspondence should be addressed.
These authors contributed equally to this work and should be considered co-first authors.
Int. J. Mol. Sci. 2017, 18(12), 2535;
Received: 30 October 2017 / Revised: 20 November 2017 / Accepted: 21 November 2017 / Published: 26 November 2017
(This article belongs to the Section Molecular Pathology, Diagnostics, and Therapeutics)
PDF [768 KB, uploaded 26 November 2017]


This study aims to determine whether Lactobacillus casei (L. casei) could relieve liver injury in piglets challenged with lipopolysaccharide (LPS). Piglets were randomly allocated into one of the three groups: control, LPS, and L. casei. The control and LPS groups were fed a corn- and soybean meal-based diet, whereas the L. casei group was fed the basal diet supplemented with 6 × 106 cfu/g L. casei. On Day 31 of the trial, piglets in the LPS and L. casei groups received intraperitoneal administration of LPS (100 µg/kg body weight), while the control group received the same volume of saline. Blood and liver samples were collected for analysis. Results showed that L. casei supplementation decreased the feed/gain ratio (p = 0.027) and diarrhea incidence (p < 0.001), and attenuated LPS-induced liver histomorphological abnormalities. Compared with the control group, LPS challenge dramatically increased glutamyl transpeptidase activity (p = 0.001) in plasma as well as the concentrations of Interleukin 6 (IL-6) (p = 0.048), Tumor necrosis factor-alpha (TNF-α) (p = 0.041), and Malondialdehyde (MDA) (p = 0.001) in the liver, while decreasing the hepatic SOD activity. LPS also increased (p < 0.05) the mRNA levels for IL-6, IL-8, TNF-α, Toll-like receptors 4 (TLR4), Nuclear factor κB (NF-κB) and Heat shock protein 70 (HSP70) in the liver. The adverse effects of LPS challenge were ameliorated by L. casei supplementation. In conclusion, dietary L. casei alleviates LPS-induced liver injury via reducing pro-inflammatory cytokines and increasing anti-oxidative capacity. View Full-Text
Keywords: Lactobacillus casei; piglets; lipopolysaccharide; liver Lactobacillus casei; piglets; lipopolysaccharide; liver

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Zhao, D.; Wu, T.; Yi, D.; Wang, L.; Li, P.; Zhang, J.; Hou, Y.; Wu, G. Dietary Supplementation with Lactobacillus casei Alleviates Lipopolysaccharide-Induced Liver Injury in a Porcine Model. Int. J. Mol. Sci. 2017, 18, 2535.

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