title: Growth-related oncogene-alpha expression in human nasal polyps.
abstract: The cytokine growth-related oncogene-alpha (GRO-alpha) is a potent mediator of leukocyte recruitment and proliferation in inflammatory diseases. We hypothesized that GRO-alpha is produced in the inflammatory nasal polyp microenvironment. Evaluation of nasal polyps from 27 patients for distribution and content of GRO-alpha antigen, by use of immunohistochemical techniques and ELISA, revealed its presence in all 27 tissue samples. It was found predominantly within the eosinophils and neutrophils, with tissue levels ranging from 34 pg/mg total protein (TP) to 1746 pg/mg TP, with a mean value of 631 +/-98 pg/mg TP. Control tissues contained between 82 pg/mg TP and 316 pg/mg TP (mean 176+/-38 pg/mg TP). These results were statistically significant (P<0.03). Clinical correlations and statistical comparisons were calculated. These data suggest that GRO-alpha may be an important factor in the recruitment and activation of leukocytes in nasal polyposis, making it a potential target for therapeutic intervention.
authors.affiliation: Division of Otolaryngology, Department of Surgery, University of Connecticut Health Center, Farmington, CT 06030-3105, USA.
authors.forename: A M
authors.initials: AM
authors.lastname: Klein
authors.forename: K
authors.initials: K
authors.lastname: Anderson
authors.forename: D
authors.initials: D
authors.lastname: Lafreniere
authors.forename: G
authors.initials: G
authors.lastname: Leonard
authors.forename: D
authors.initials: D
authors.lastname: Kreutzer
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D054360:Chemokine CXCL1; D019743:Chemokines, CXC; D002630:Chemotactic Factors / Q000032:analysis*; D004724:Endoscopy; D004797:Enzyme-Linked Immunosorbent Assay; D004804:Eosinophils / Q000473:pathology; D005260:Female; D006131:Growth Inhibitors / Q000032:analysis*; D006133:Growth Substances / Q000032:analysis*; D006801:Humans; D007124:Immunoenzyme Techniques; D036341:Intercellular Signaling Peptides and Proteins; D008297:Male; D008875:Middle Aged; D009297:Nasal Mucosa / Q000473:pathology; D009298:Nasal Polyps / Q000473:pathology* / Q000601:surgery; D009504:Neutrophils / Q000473:pathology; D009669:Nose Neoplasms / Q000473:pathology* / Q000601:surgery
chemical_list: C475829:CXCL1 protein, human; D054360:Chemokine CXCL1; D019743:Chemokines, CXC; D002630:Chemotactic Factors; D006131:Growth Inhibitors; D006133:Growth Substances; D036341:Intercellular Signaling Peptides and Proteins