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Table 3 Blood leukocyte counts and systemic inflammatory markers of asthmatics classified by phenotypes and healthy subjects

From: Detailed analysis of sputum and systemic inflammation in asthma phenotypes: are paucigranulocytic asthmatics really non-inflammatory?

 

Eosinophilic asthma

Neutrophilic asthma

Mixed granulocytic asthma

Paucigranulocytic asthma

Healthy subjectsa

p value (Kruskal-Wallis test)

Sp. eosinophils ≥3 %

Sp. eosinophils <3 %

Sp. eosinophils ≥3 %

Sp. eosinophils <3 %

Sp. neutrophils <76 %

Sp. neutrophils ≥76 %

Sp. neutrophils ≥76 %

Sp. neutrophils <76 %

Blood leukocytes (x 103/μL)

7.76 (6.52–8.87)

7.75 (6.43–10.00)

8.02 (6.16–10.83)

7.25 (6.02–8.75)

6.12 (5.03–7.37)

0.0001

Blood eosinophils

      

 /μL

315 (202–513)‡*

129 (79–228)†§

289 (216–449)‡*

140 (85–227)

106 (68–172)

0.0001

 %

4.2 (2.8–6.2)‡*

1.7 (1.0–3.0)†§

3.9 (2.7–5.8)‡*

2.0 (1.1–3.0)

1.8 (1.0–3.0)

0.0001

Blood neutrophils

      

 /μL

4045 (3204–5140)

4847 (3260–6323)‡*†

4207 (2834–6610)

3971 (3156–5280)

3416 (2610–4188)

0.0001

 %

54.0 (47.6–60.1)*

59.5 (52.5–69.3)*†

57.6 (44.4–62.4)

56.5 (50.3–62.2)

54.4 (49.6–62.1)

0.0001

Blood monocytes

      

 /μL

515 (396–667)‡*

492 (408–656)

564 (448–775)

461 (362–608)

399 (330–550)

0.0001

 %

6.7 (5.1–8.3)

6.5 (5.4–8.2)

7.2 (5.6–9.0)

6.4 (5.1–8.2)

7.1 (5.7–8.2)

>0.05

Blood lymphocytes

      

 /μL

2358 (1918–2809)

2249 (1765–2807)

2180 (1887–2869)

2337 (1894–2904)

2009 (1611–2386)

0.0001

 %

31.8 (26.0–38.3)

29.4 (22.5–37.1)‡*

29.1 (21.0–38.2)

32.7 (27.3–38.2)

33.9 (26.5–37.7)

0.006

Blood basophils

      

 /μL

42 (29–63)‡*

35 (23–51)

39 (27–55)

34 (24–52)

34 (24–46)

0.0001

 %

0.6 (0.4–0.8)*

0.5 (0.3–0.6)‡†

0.5 (0.4–0.7)

0.5 (0.3–0.7)

0.5 (0.4–0.8)

0.0001

CRP (mg/L)b

1.4 (0.6–3.6)

1.9 (0.8–5.3)

2.9 (0.6–8.9)

1.6 (0.6–4.5)

1.1 (0.4–2.4)

0.034

Fibrinogen (g/L)c

3.2 (2.8–3.8)

3.2 (2.8–3.7)

3.3 (2.7–3.9)

3.1 (2.7–3.6)

2.9 (2.6–3.2)

0.0008

  1. aData available for 96 healthy subjects
  2. bData available for 208 eosinophilic, 92 neutrophilic, 23 mixed granulocytic, 186 paucigranulocytic and 63 healthy subjects
  3. cData available for 194 eosinophilic, 85 neutrophilic, 21 mixed granulocytic, 174 paucigranulocytic and 59 healthy subjects
  4. p < 0.005, comparison with healthy subjects
  5. * p < 0.005, comparison with paucigranulocytic asthma
  6. p < 0.005, comparison with eosinophilic asthma
  7. § p < 0.005, comparison with mixed granulocytic asthma
  8. Abbreviations: CRP C-reactive protein; Sp. sputum