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Title: Total blood eosinophils, serum eosinophil cationic protein and eosinophil protein X in childhood asthma: relation to disease status and therapy.
Author: Zimmerman B, Lanner A, Enander I, Zimmerman RS, Peterson CG, Ahlstedt S.
Journal: Clin Exp Allergy; 1993 Jul; 23(7):564-70. PubMed ID: 8221257.
Abstract:
Blood eosinophils, and serum levels of the eosinophil proteins, eosinophil cationic protein (ECP) and eosinophil protein X (EPX) were measured in childhood asthma. Seventeen patients mean age 11.9 years who were symptomatic with asthma, were enrolled in a study examining the eosinophil counts and eosinophil proteins at the onset of study and after treatment in relation to changes in their baseline forced expiratory volume at 1 second (FEV1) and % predicted FEV1. The patients with symptomatic asthma were compared with 17 patients mean age 12.0 years with asymptomatic asthma maintained on daily inhaled steroid and 13 patients, mean age 12.0 years, without asthma but with urticaria who served as non-asthma controls. Patients with symptomatic asthma did not have significantly higher initial eosinophil counts compared with those with asymptomatic asthma (0.43 x 10(9)/l vs 0.26 x 10(9)/l, P = 0.09) but had higher serum ECP levels (28.9 micrograms/l vs 18.5 micrograms/l). Both asthma patient groups had significantly higher serum ECP levels (P < 0.01) than the controls (9.8 micrograms/l). After therapy consisting of increased dose of inhaled steroids and/or oral steroids, patients in the symptomatic asthma group demonstrated a significant rise in FEV1 (1.67 l/sec at Visit 1 vs 2.08 l/sec at Visit 2, P < 0.001). A similar rise was seen for % predicted FEV1.(ABSTRACT TRUNCATED AT 250 WORDS)

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