15(S)-HETE modulates LTB4 production and neutrophil chemotaxis in chronic bronchitis (Articolo in rivista)

Type
Label
  • 15(S)-HETE modulates LTB4 production and neutrophil chemotaxis in chronic bronchitis (Articolo in rivista) (literal)
Anno
  • 2000-01-01T00:00:00+01:00 (literal)
Alternative label
  • MIRELLA PROFITA,1 ANGELO SALA,2 LOREDANA RICCOBONO,1 ELISABETTA PACE,1 ALESSANDRA PATERNO` ,1 SIMONA ZARINI,2 LIBORIA SIENA,1 ANGELA MIRABELLA,3 GIOVANNI BONSIGNORE,1,3 AND ANTONIO M. VIGNOLA1 (2000)
    15(S)-HETE modulates LTB4 production and neutrophil chemotaxis in chronic bronchitis
    in American journal of physiology. Cell physiology; American Physiological Society, Bethesda (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • MIRELLA PROFITA,1 ANGELO SALA,2 LOREDANA RICCOBONO,1 ELISABETTA PACE,1 ALESSANDRA PATERNO` ,1 SIMONA ZARINI,2 LIBORIA SIENA,1 ANGELA MIRABELLA,3 GIOVANNI BONSIGNORE,1,3 AND ANTONIO M. VIGNOLA1 (literal)
Pagina inizio
  • C1249 (literal)
Pagina fine
  • C1258 (literal)
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  • http://ajpcell.physiology.org/content/279/4/C1249.full.pdf (literal)
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  • 279 (literal)
Rivista
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  • 10 (literal)
Note
  • PubMe (literal)
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  • 1 Istituto di Fisiopatologia Respiratoria, Consiglio Nazionale delle Ricerche, Palermo; 3 Istituto di Medicina Generale e Pneumologia, University of Palermo, 190146 Palermo; and 2 Center for Cardiopulmonary Pharmacology, University of Milan, 20133 Milano, Italy (literal)
Titolo
  • 15(S)-HETE modulates LTB4 production and neutrophil chemotaxis in chronic bronchitis (literal)
Abstract
  • We evaluated the levels of 15(S)-hydroxyeicosatetraenoic acid [15(S)-HETE] and the expression of 15-lipoxygenase (15-LO) mRNA in induced sputum obtained from 10 control and 15 chronic bronchiti subjects. 15(S)-HETE was evaluated by reverse phase high-performance liquid chromatography separation followed by specific RIA. 15-LO mRNA expression was determined by primed in situ labeling. The levels of both soluble and cell-associated 15(S)-HETE resulted significantly higher in chronic bronchitis than in control subjects. The percentage of cells expressing 15-LO mRNA was significantly higher in chronic bronchitis than in control subjects (P , 0.01). Double staining for specific cell type markers and 15-LO mRNA showed macrophages and neutrophils positive for 15-LO, whereas similar staining of peripheral blood neutrophils did not show evidence for 15-LO expression, suggesting that expression of 15-LO in neutrophils takes place on migration into the airways. Because 15(S)-HETE inversely correlated with the percentage of neutrophils in sputum of chronic bronchitis subjects, we studied the effect of 15(S)-HETE on leukotriene B4 (LTB4) production in vitro and evaluated the concentration of LTB4 in induced sputum and the contribution of LTB4 to the chemotactic activity of induced sputum samples ex vivo. The results obtained indicate that macrophages and neutrophils present within the airways of chronic bronchitis subjects express 15-LO mRNA; increased basal levels of 15(S)-HETE may contribute to modulate, through the inhibition of 5-lipoxygenase metabolites production, neutrophil infiltration and airway inflammation associated with chronic bronchitis. (literal)
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