Skip to main content

Table 3 Functional and inflammatory characteristics according to the inflammatory phenotype

From: Distribution of sputum cellular phenotype in a large asthma cohort: predicting factors for eosinophilic vs neutrophilic inflammation

 

Paucigranulocytic phenotype

Eosinophilic phenotype

Neutrophilic phenotype

Mixed granulocytic phenotype

IgE, kU/l

84 (1–7338)

211 (3–17183)***

107 (2–7338)

346 (1–2063)

Blood eosinophils,/mm3

160 (0–1220)

360 (0–3220)***

170 (20–1020)

420 (190–3040)***

Blood eosinophils,%

2 (0–13)

4.5 (0–26)***

1.9 (0.2-15)

5 (1.3-30)***

Blood neutrophils,/mm3

4030 (76–11080)

4220 (1820–15410)

5000 (2070–10440)

4245 (3520–6170)

Blood neutrophils,%

59 (27–82)

55 (32–91)*

62 (42–80)

59 (43–68)

FEV1,% predicted

90 ± 17

80 ± 20***

79 ± 20***

72 ± 14***

FEV1/FVC,%

77 ± 9

71 ± 10***

72 ± 11***

69 ± 9***

TLC,% predicted

99 ± 16

102 ± 18

102 ± 18

101 ± 14

FRC,% predicted

103 ± 27

104 ± 19

119 ± 32

111 ± 22

KCO,% predicted

90 ± 19

92 ± 21

91 ± 19

100 ± 10

PC20, mg/ml

4.42 (0.13-16)

2.02 (0.025-16)**

3.22 (0.05-16)

1.08 (0.53-2.2)**

Reversibility,%

8 ± 9

15 ± 17**

8 ± 10

12 ± 10

Sputum eosinophils,%

0.4 (0–2.9)

18 (3–94)

0.2 (0–2.8)

4.3 (3–8)

Sputum neutrophils,%

41 (0–76)

33 (0–76)

87 (77 – 100)

82 (76–92)

Fibrinogen, g/l

3.1 (2–6.3)

3.1 (2–7.2)

3.3 (1.9-10)

4.1 (2.7-6.3)*

CRP, mg/l

1.6 (0.2-14)

1.8 (0.2-14)

2.3 (0.2-10)

1.9 (1.1-6)

FENO, ppb

16 (1–128)

53 (2–247)***

22 (0–192)

41 (12–161)*

ACQ

1.82 ± 1.15

2.16 ± 1.36*

2.09 ± 1.88

2.09 ± 1.16

Global AQLQ

4.6 ± 1.3

4.58 ± 1.34

4.76 ± 1.46

4.45 ± 1.74

-Emotion

4.92 ± 1.35

4.57 ± 1.63

4.9 ± 1.76

4.64 ± 1.83

-Symptoms

4.46 ± 1.46

4.42 ± 1.43

4.65 ± 1.54

4.39 ± 1.5

-Activity

4.71 ± 1.36

4.79 ± 1.44

4.84 ± 1.49

4.55 ± 1.80

-Environnement

4.48 ± 1.50

4.55 ± 1.55

4.81 ± 1.67

4.70 ± 2.15

  1. *p < 0.05, **p < 0.001, ***p < 0.0001 *Paucigranulocytic asthma is used as the comparator.
  2. Data are presented as mean ± SD or median (range); PC20 is expressed as geometric mean (range). ACQ, Asthma Control Questionnaire; AQLQ, Asthma Quality of Life Questionnaire; FE NO , exhaled nitric oxide; FEV 1 , forced expiratory volume in 1 s; PC 20 , concentration required to provoke a fall in FEV1 of 20% or more; FVC, forced vital capacity. CRP, C-Reactive Protein; FRC: Forced residual capacity; KCO: Carbon monoxide transfer coefficient; TLC: total lung capacity. Paucigranulocytic asthma is used as the comparator.