Abstract
Plasma levels of lactoferrin (LF) have been found to be increased in a few patients with cystic fibrosis (CF). This study was aimed at investigating plasma LF levels in children with CF (26 cases) and in controls (C) (19 cases). Plasma LF was measured by a radioimmunoassay method. Plasma LF levels were not significantly different in CF and in C, even though 10 CF patients showed LF levels above the mean + 2 SD value of the controls. Neither the duration of the disease nor the age of the controls was correlated with LF or with the exocrine pancreatic capacity. A significant relationship between the presence of an acute lung inflammation and LF levels was found. This study shows that LF is increased in CF only in the presence of an acute inflammatory state. Further studies are necessary to establish the usefulness of an LF assay as an index of the presence of an acute inflammatory process.
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