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2017 ; 14
(4
): 3198-3206
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Eosinophilic biomarkers for detection of acute exacerbation of chronic
obstructive pulmonary disease with or without pulmonary embolism
#MMPMID28912870
Yang QF
; Lu TT
; Shu CM
; Feng LF
; Chang HT
; Ji QY
Exp Ther Med
2017[Oct]; 14
(4
): 3198-3206
PMID28912870
show ga
Eosinophilia has been implicated in the pathophysiology of acute exacerbation of
chronic obstructive pulmonary disease (AECOPD). However, the role of eosinophil
activation in the development of AECOPD remains unclear. In the present study,
the reliability of plasma levels of eosinophil activation markers, including
eosinophil cationic protein (ECP), major basic protein (MBP), eosinophil-derived
neurotoxin (EDN) and eosinophil peroxidase (EPX), were measured and used as
diagnostic biomarkers of AECOPD with or without pulmonary embolism (PE). A total
of 47 patients with AECOPD, 30 patients with AECOPD/PE and 35 healthy adults were
enrolled in the present study. Plasma levels of ECP, EDN, EPX and MBP were
measured using commercial ELISA kits. The mean concentrations of plasma ECP, EDN,
EPX and MBP in the patients with AECOPD was significantly 2.87-, 3.06-, 1.60- and
1.92-fold higher, respectively, compared with the control group (P<0.05). Similar
results were obtained in patients with AECOPD/PE, for whom plasma levels of ECP,
EDN, EPX and MBP were significantly 2.06-, 2.21-, 1.42- and 2.42-fold higher,
respectively, compared with the controls (P<0.05). No significant differences
were observed in the levels of these proteins between patients with AECOPD or
AECOPD/PE. Among the four potential markers, ECP was determined to be the optimal
marker for distinguishing patients with AECOPD or AECOPD/PE from the controls. No
significant correlation was observed between marker concentrations and gender,
age or disease severity. The results of the present study may have clinical
applications in the diagnosis of AECOPD using these novel biomarkers.