PMID- 28596485 OWN - NLM STAT- MEDLINE DCOM- 20180423 LR - 20181113 IS - 1949-2553 (Electronic) IS - 1949-2553 (Linking) VI - 8 IP - 29 DP - 2017 Jul 18 TI - Rumen-derived lipopolysaccharide provoked inflammatory injury in the liver of dairy cows fed a high-concentrate diet. PG - 46769-46780 LID - 10.18632/oncotarget.18151 [doi] AB - Rumen-derived lipopolysaccharide (LPS) is translocated from the rumen into the bloodstream when subacute ruminal acidosis (SARA) occurs following long-term feeding with a high-concentrate (HC) diet in dairy cows. The objective of this study was to investigate the mechanism of inflammatory responses in the liver caused by HC diet feeding. We found that SARA was induced in dairy cows when rumen pH below 5.6 lasted for at least 3 h/d with HC diet feeding. Also, the LPS levels in the portal and hepatic veins were increased significantly and hepatocytes were impaired as well as the liver function was inhibited during SARA condition. Meanwhile, the mRNA expression of immune genes including TNF receptor associated factor 6 (TRAF6), nuclear factor-kappa B (NF-kappaB), p38 mitogen-activated protein kinase (MAPK), extracellular regulated protein kinases (ERK) MAPK, Interleukin-1 (IL-1) and serum amyloid A (SAA) in the liver were significantly increased in SARA cows. Moreover, the phosphorylation level of NF-kappaB p65 and p38 MAPK proteins in the liver and the concentration of Tumor Necrosis Factor (TNF-alpha), Interleukin-1beta (IL-1beta) and Interleukin-6 (IL-6) in peripheral blood were obviously increased under SARA condition. In conclusion, the inflammatory injury in the liver caused by LPS that traveled from the digestive tract to the liver through the portal vein after feeding with a HC diet. FAU - Guo, Junfei AU - Guo J AD - College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, P.R. China. FAU - Chang, Guangjun AU - Chang G AD - College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, P.R. China. FAU - Zhang, Kai AU - Zhang K AD - College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, P.R. China. FAU - Xu, Lei AU - Xu L AD - College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, P.R. China. FAU - Jin, Di AU - Jin D AD - College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, P.R. China. FAU - Bilal, Muhammad Shahid AU - Bilal MS AD - College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, P.R. China. FAU - Shen, Xiangzhen AU - Shen X AD - College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, P.R. China. LA - eng PT - Journal Article PL - United States TA - Oncotarget JT - Oncotarget JID - 101532965 RN - 0 (Biomarkers) RN - 0 (Cytokines) RN - 0 (Inflammation Mediators) RN - 0 (Lipopolysaccharides) RN - 0 (NF-kappa B) RN - 0 (RNA, Messenger) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) SB - IM MH - *Animal Feed MH - Animals MH - Biomarkers MH - Cattle MH - Cytokines/blood/metabolism MH - Gene Expression Regulation MH - Hepatitis, Animal/blood/*etiology/*metabolism/pathology MH - Hepatocytes/metabolism/pathology MH - Hydrogen-Ion Concentration MH - Inflammation Mediators/metabolism MH - Lipopolysaccharides/blood/*metabolism MH - Liver Function Tests MH - NF-kappa B/metabolism MH - Phosphorylation MH - RNA, Messenger/genetics/metabolism MH - Rumen/*metabolism MH - Signal Transduction MH - p38 Mitogen-Activated Protein Kinases/metabolism PMC - PMC5564522 OTO - NOTNLM OT - Immune response OT - Immunity OT - Immunology and Microbiology Section OT - dairy cows OT - inflammatory injury OT - lipopolysaccharide OT - liver OT - subacute ruminal acidosis COIS- CONFLICTS OF INTEREST The authors declare no conflicts of interest. EDAT- 2017/06/10 06:00 MHDA- 2018/04/24 06:00 PMCR- 2017/07/18 CRDT- 2017/06/10 06:00 PHST- 2017/01/09 00:00 [received] PHST- 2017/05/11 00:00 [accepted] PHST- 2017/06/10 06:00 [pubmed] PHST- 2018/04/24 06:00 [medline] PHST- 2017/06/10 06:00 [entrez] PHST- 2017/07/18 00:00 [pmc-release] AID - 18151 [pii] AID - 10.18632/oncotarget.18151 [doi] PST - ppublish SO - Oncotarget. 2017 Jul 18;8(29):46769-46780. doi: 10.18632/oncotarget.18151.