Increased neutrophil chemiluminescence production in patients with cystic fibrosis

Metabolism. 1994 Jun;43(6):719-22. doi: 10.1016/0026-0495(94)90120-1.


Increased free radical production has been suggested as a possible mechanism involved in lung deterioration of patients with cystic fibrosis (CF). Vitamins A and E are known to be involved in the defense mechanism preventing damage caused by free radicals. Both vitamins are fat-soluble and are therefore malabsorbed in patients with CF. We hypothesized that low concentrations of vitamins A and E may be involved in the increased free radical production of these patients. Neutrophils' chemiluminescence and superoxide and hydrogen peroxide production were examined in 11 patients with CF aged 4 to 14 years, and 10 age-matched healthy controls. All our patients were on prolonged supplementation with vitamins A and E, but the control group was not supplemented. Serum vitamins A and E levels and neutrophil vitamin E concentrations were examined concomitantly. Chemiluminescence production was increased 10 minutes after neutrophil stimulation by phorbol myristate acetate (PMA) as compared with that in normals (20,400 +/- 9,463 v 11,990 +/- 3,778 cpm, P < .03). No difference was found in superoxide or hydrogen peroxide production between CF patients and controls. Serum vitamin A levels were significantly higher in CF patients compared with healthy controls (0.641 +/- 0.049 v 0.398 +/- 0.038 mg/L, P < .04) and so were vitamin E levels (13.94 +/- 2.25 v 5.64 +/- 1.15 mg/L, P < .05). Neutrophil vitamin E concentrations were higher in CF patients compared with healthy controls (70.8 +/- 26.0 v 23.6 +/- 9.0 micrograms/10(6) cells). We conclude that neutrophils from CF patients exhibit increased chemiluminescence activity not related to increased free radical production or fat-soluble vitamin deficiency.

MeSH terms

  • Adolescent
  • Child
  • Child, Preschool
  • Cystic Fibrosis / blood*
  • Cystic Fibrosis / metabolism
  • Humans
  • Hydrogen Peroxide / metabolism
  • Luminescent Measurements*
  • Neutrophils / chemistry
  • Neutrophils / drug effects
  • Neutrophils / physiology*
  • Reactive Oxygen Species / metabolism
  • Superoxides / metabolism
  • Tetradecanoylphorbol Acetate / pharmacology
  • Vitamin A / blood
  • Vitamin E / blood


  • Reactive Oxygen Species
  • Superoxides
  • Vitamin A
  • Vitamin E
  • Hydrogen Peroxide
  • Tetradecanoylphorbol Acetate