Proteomic Changes in Chicken Plasma Induced by Salmonella typhimurium Lipopolysaccharides

Balamurugan Packialakshmi, Rohana Liyanage, Jackson O. Lay, Sarbjeet K. Makkar, Narayan C. Rath
2016 Proteomics Insights  
Lipopolysaccharides (LPS) are cell wall components of Gram-negative bacteria that produce inflammation and sickness in higher animals. The objective was to identify plasma proteomic changes in an avian model of inflammation. Chickens were treated with either saline or LPS, and blood was collected at 24 hours postinjection. The pooled plasma samples were depleted of high-abundant proteins and analyzed by matrix-assisted laser desorption ionization (MALDI)-time-of-flight mass spectrometry and
more » ... id chromatography-tandem mass spectrometry (LC-MS/MS). MALDI analyses showed an increase in fibrinogen beta-derived peptide and a decrease in apolipoprotein-AII-derived peptide in LPS samples. Label-free quantitation of LC-MS/MS spectra revealed an increase in the levels of α1-acid glycoprotein, a chemokine CCLI10, and cathelicidin-2, but a decrease in an interferonstimulated gene-12-2 protein in the LPS group. These differentially expressed proteins are associated with immunomodulation, cytokine changes, and defense mechanisms, which may be useful as candidate biomarkers of infection and inflammation.
doi:10.4137/pri.s31609 pmid:27053921 pmcid:PMC4818023 fatcat:zvzcbuujb5c65nfbo7bl6afcsa