Serum amyloid alpha in parapneumonic effusions.

Abstract:

STUDY OBJECTIVES:To assess serum amyloid alpha (SAA) pleural fluid levels in parapneumonic effusion (PPE) and to investigate SAA diagnostic performance in PPE diagnosis and outcome. METHODS:We studied prospectively 57 consecutive patients with PPE (empyema (EMP), complicated (CPE), and uncomplicated parapneumonic effusion (UPE)). SAA, CRP, TNF-α, IL-1β, and IL-6 levels were evaluated in serum and pleural fluid at baseline. Patients were followed for 6-months to detect pleural thickening/loculations. RESULTS:Pleural SAA levels (mg/dL) median(IQR) were significantly higher in CPE compared to UPE (P < 0.04); CRP levels were higher in EMP and CPE compared to UPE (P < 0.01). There was no significant difference between IL-1β, IL-6, TNF-α level in different PPE forms. No significant association between SAA levels and 6-month outcome was found. At 6-months, patients with no evidence of loculations/thickening had significantly higher pleural fluid pH, glucose levels (P = 0.03), lower LDH (P = 0.005), IL-1β levels (P = 0.001) compared to patients who presented pleural loculations/thickening. CONCLUSIONS:SAA is increased in complicated PPE, and it might be useful as a biomarker for UPE and CPE diagnosis. SAA levels did not demonstrate considerable diagnostic performance in identifying patients who develop pleural thickening/loculations after a PPE.

journal_name

Mediators Inflamm

authors

Boultadakis V,Skouras V,Makris D,Damianaki A,Nikoulis DJ,Kiropoulos T,Oikonomidi S,Tsilioni I,Gourgoulianis K

doi

10.1155/2011/237638

subject

Has Abstract

pub_date

2011-01-01 00:00:00

pages

237638

eissn

0962-9351

issn

1466-1861

journal_volume

2011

pub_type

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