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2000: Beckman M J; Sotos J; Leite F; Schuler L A; Czuprynski C J
Differential gene regulation of interleukin-1 ligands and receptors in bovine peripheral blood neutrophils and mononuclear cells in response to E. coli lipopolysaccharide (LPS).
Veterinary immunology and immunopathology 2000;77(3-4):221-32.
The proinflammatory cytokine, interleukin-1, plays a prominent role in the inflammatory reactions that characterize numerous diseases. In this study, we examined the gene expression for bovine IL-1 ligands and receptors by bovine peripheral blood mononuclear cells (MNCs) and neutrophils (PMNs) in response to E. coli lipopolysaccharide (LPS) in vitro. Gene expression of mRNA for IL-1alpha, IL-1beta, IL-1 receptor antagonist (IL-1ra), type 1 IL-1 receptor, type 2 IL-1 receptor, and IL-1 beta converting enzyme (ICE), were measured by a semi-quantitative RT-PCR technique. LPS had little effect on type 1 IL-1R expression in MNC, whereas, it strongly up-regulated type 1 IL-1R expression in PMNs. Co-incubation of PMNs with LPS and bovine recombinant IL-1beta had little additional effect on type 1 IL-1R expression. Incubation of MNCs with LPS resulted in up-regulation of IL-1beta, IL-1ra, and type 2 IL-1R, no change in IL-1alpha, and a decrease in ICE gene expression. Incubation of PMNs with LPS up-regulated IL-1beta gene expression, whereas, IL-1alpha, IL-1ra, type 2 IL-1R and ICE were unchanged. This study provides evidence for differential regulation of gene products of the bovine IL-1 family by peripheral blood mononuclear cells (MNC) and neutrophils (PMNs) in response to E. coli LPS.

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