The expression of fibrinolytic components in chronic paranasal sinus disease.

Abstract:

BACKGROUND:Fibrinolytic components, their receptors, and inhibitors are considered to play an important role in inflammation and tissue remodeling including chronic rhinosinusitis (CRS). To clarify the relationship between these components and the pathology of CRS, we analyzed fibrinolytic components in sinonasal mucosa of CRS. METHODS:Sinonasal mucosa samples from 12 patients with CRS without nasal polyp (CRSsNP), 14 patients with CRS with nasal polyp (CRSwNP), and 12 control patients were prepared. By immunohistochemistry and ELISA, samples were studied with respect to urokinase-type plasminogen activator (uPA), uPA receptor (uPAR), plasminogen activator inhibitor-1 (PAI-1) and key mediators in sinus disease, TGF-beta1 and eosinophil cationic protein (ECP). RESULTS:uPA- or uPAR-positive inflammatory cells were increased in CRSwNP compared to controls and CRSsNP, whereas PAI-1-positive cells were increased in CRSsNP compared to CRSwNP and controls. ELISA measurements revealed that uPAR concentrations were increased in both CRSsNP (16.1 ng/mL; 10.4-22.9; p < 0.05) and CRSwNP (20.8 ng/mL; 9.62-25.9; p < 0.01) compared to controls (8.7 ng/mL; 7.9-12.9), and PAI-1 concentrations were increased in CRSsNP (198.8 ng/mL; 147.4-234.1) compared to controls (107.3 ng/mL; 92.6-175.3; p < 0.01) and CRSwNP (113.5 ng/mL; 105.1-193.5; p < 0.05). Moreover, the concentrations of TGF-beta1 correlated with PAI-1 in CRSsNP, and ECP correlated with uPAR protein in CRSwNP. CONCLUSION:Fibrinolytic components were highly expressed in CRSwNP compared to normal controls, whereas the inhibiting protein was up-regulated in CRSsNP. Furthermore, correlations between the expressions of fibrinolytic components and key mediators in CRS were found.

journal_name

Am J Rhinol Allergy

authors

Sejima T,Holtappels G,Bachert C

doi

10.2500/ajra.2011.25.3537

subject

Has Abstract

pub_date

2011-01-01 00:00:00

pages

1-6

issue

1

eissn

1945-8924

issn

1945-8932

journal_volume

25

pub_type

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