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Minerva Medica 2021 Sep 13

DOI: 10.23736/S0026-4806.21.07679-5


language: English

Eosinophilic cationic protein (ECP) in the clinical work-up of chronic cough

Mara DE AMICI 1, 2, 3, 4, Davide PILONI 2 , Claudio TIRELLI 2, Francesca MARIANI 2, Giulia ACCORDINO 2, Lucia SACCHI 3, Giorgia TESTA 4 , Amelia LICARI 4, Angelo G. CORSICO 2

1 Laboratory Immuno-Allergology of Clinical Chemistry, Department of Pediatrics, Foundation IRCCS Policlinic San Matteo, Pavia, Italy; 2 Respiratory Diseases Unit, IRCCS Policlinico San Matteo Foundation, University of Pavia, Pavia, Italy; 3 Laboratory for Biomedical Informatics Mario Stefanelli, Department of Electrical, Computer and Biomedical Engineering, University of Pavia, Pavia, Italy; 4 Pediatric Clinic, IRCCS Policlinico San Matteo Foundation, University of Pavia, Pavia, Italy


BACKGROUND: Chronic cough is a common symptom, addressed in the clinical setting by empirical treatment together with some laboratory investigations. Purpose of the present study is to investigate the value of testing eosinophilic cationic protein (ECP) serum levels combined with other diagnostic procedures and empirical treatment in the diagnostic workup of chronic cough.
METHODS: In this study, we evaluated 194 patients with chronic cough. No subject had received any anti-inflammatory treatment before clinical evaluation, and none was an active smoker. ECP was measured with a commercially available fluoroenzyme immunoassay and results were expressed as µg/L.
RESULTS: The analysis of variance showed that mean ECP level differs among the various diagnosis categories (p < 0.001). Mean ECP level was significantly higher in asthmatic patients, particularly in the active disease.
CONCLUSIONS: Serum ECP concentration could represent a useful biomarker in the clinical work-up of chronic cough, managing to differentiate asthma from other chronic disorders.

KEY WORDS: Eosinophilic cationic protein; Asthma; Rhinitis; COPD; GERD

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