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Serum concentrations of GM-CSF and G-CSF correlate with the Th1/Th2 cytokine response in cystic fibrosis patients with chronic Pseudomonas aeruginosa lung infection

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Moser C, Jensen PØ, Pressler T, Frederiksen B, Lanng S, Kharazmi A, Koch C, Høiby N. Serum concentrations of GM-CSF and G-CSF correlate with the Th1/Th2 cytokine response in cystic fibrosis patients with chronic Pseudomonas aeruginosa lung infection. APMIS 2005;113:400–9.

The inflammation in cystic fibrosis (CF) patients with chronic Pseudomonas aeruginosa lung infection is dominated by polymorphonuclear neutrophils (PMNs). There seems to be a relationship between the PMN-dominated inflammation, pronounced antibody production and a Th2-dominated response. Apart from mobilizing monocytes and PMNs from the bone marrow, GM-CSF, G-CSF and IL-3 select subsets of dendritic cells, which subsequently induce distinct Th responses. Therefore, the present study examines the correlation between the mobilizing cytokines in serum and the Th responses. The IFN-γ and IL-4 production by peripheral blood mononuclear cells, and the concentrations of GM-CSF and G-CSF in serum as well as lung function, were determined in 37 CF patients with and 6 CF patients without chronic P. aeruginosa lung infection. The GM-CSF/G-CSF ratio correlated both with the IFN-γ production and good lung function. In addition, an inverse correlation between IL-3 and IFN-γ was observed. The results indicate involvement of endogenous GM-CSF, G-CSF and IL-3 in the skewed Th response in CF, and change to a Th1-dominated response might be achieved with GM-CSF treatment.
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Keywords: G-CSF; GM-CSF; Pseudomonas aeruginosa; Th1/Th2 response; cystic fibrosis

Document Type: Research Article

Affiliations: 1: Department of Clinical Microbiology and 2: The Danish Cystic Fibrosis Centre, Pediatric Department, Rigshospitalet, University Hospital, Copenhagen, Denmark

Publication date: 2005-06-01

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