title: Influence of disease site and activity on peripheral neutrophil function in inflammatory bowel disease.
abstract: Reactive oxygen species, released by phagocytes, are involved in tissue injury in inflammatory bowel diseases. The aim of our study was to evaluate peripheral neutrophil function in patients with ulcerative colitis (N = 66) and Crohn's disease (N = 62) with respect to disease activity and extent, using chemiluminometry after three stimuli. Twenty-seven healthy subjects were enrolled as controls. Neutrophils from ulcerative colitis and Crohn's disease patients had a significantly higher response than those from controls following phorbol myristate acetate (86.6 +/- 6.5, 173.8 +/- 11.9, 167.5 +/- 12.2 mV, P < 0.0001), formyl-methionyl-leucyl-phenylalanine (39.5 +/- 3.4, 41.3 +/- 2.7, 58.6 +/- 4.7 mV, P < 0.001), and zymosan (142.6 +/- 10.4, 223.7 +/- 8.9, 231.2 +/- 9.5 mV, P < 0.0001) administration. The increased response was observed during both active disease and remission. The highest chemiluminescence values were found in patients with active ulcerative pancolitis and ileal Crohn's disease. The activation of circulating neutrophils may indicate persistent intestinal inflammation or may be triggered by luminal factors even in the absence of symptoms.
authors.affiliation: Dipartimento di Scienze Chirurgiche e Gastroenterologiche, Università di Padova, Padua, Italy.
authors.forename: A
authors.initials: A
authors.lastname: D'Odorico
authors.forename: R
authors.initials: R
authors.lastname: D'Inca
authors.forename: C
authors.initials: C
authors.lastname: Mestriner
authors.forename: V
authors.initials: V
authors.lastname: Di Leo
authors.forename: A
authors.initials: A
authors.lastname: Ferronato
authors.forename: G C
authors.initials: GC
authors.lastname: Sturniolo
mesh_terms: D000328:Adult; D003093:Colitis, Ulcerative / Q000503:physiopathology*; D003424:Crohn Disease / Q000503:physiopathology*; D005260:Female; D006801:Humans; D007077:Ileal Diseases / Q000503:physiopathology; D008163:Luminescent Measurements; D008297:Male; D009240:N-Formylmethionine Leucyl-Phenylalanine / Q000494:pharmacology; D018375:Neutrophil Activation; D009504:Neutrophils / Q000502:physiology*; D017382:Reactive Oxygen Species; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology; D015054:Zymosan / Q000494:pharmacology
chemical_list: D017382:Reactive Oxygen Species; D009240:N-Formylmethionine Leucyl-Phenylalanine; D015054:Zymosan; D013755:Tetradecanoylphorbol Acetate