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Table 1 Comparison of receptor expressions of neutrophils and monocytes in patients with Streptococcus pneumoniae, influenza A and aetiologically undefined pneumonia. P values for overall group differences tested using analysis of variance (ANOVA).

From: Measurement of complement receptor 1 on neutrophils in bacterial and viral pneumonia

Parameter A
S. pneumoniae
(n = 13)
B
Influenza A
(n = 13)
C
Undefined
(n = 37)
D
Control
(n = 63)
p value
  Mean (SD) Mean (SD) Mean (SD) Mean (SD)  
WBC (×109/l) 12.3 (6.9) 7.6 (2.2) 10.3 (4.2) 4.8 (1.3) <0.0001
PMNL (×109/l) 8.9 (4.4) 5.5 (2.3) 7.5 (3.6) 2.6 (0.9) <0.0001
CRP (mg/l) 370.0 (121.5) 108.2 (87.7) 179.7 (94.4) - <0.0001
ESR (mm/h) 79.4 (20.4) 39.1 (29.7) 69.2 (24.1) - 0.0018
Receptor expression of neutrophils
CR1 20.4 (9.8) 7.5 (4.6) 19.3 (8.8) 6.3 (2.2) <0.0001
CR3 63.1 (32.6) 80.7 (40.9) 107.2 (47.9) 48.5 (17.8) <0.0001
FcγRI 4.7 (2.5) 2.9 (2.5) 5.0 (5.3) 0.6 (0.3) <0.0001
FcγRII 12.8 (5.4) 10.3 (4.2) 13.0 (4.3) 11.0 (1.8) 0.0350
FCγRIII 89.6 (43.3) 111.7 (46.2) 120.3 (43.1) 128.0 (34.3) 0.0285
Receptor expression of monocytes
CR1 11.7 (4.5) 9.7 (5.0) 15.3 (6.7) 4.6 (2.7) <0.0001
CR3 63.9 (30.8) 84.6 (30.4) 109.8 (65.1) 44.6 (33.5) <0.0001
FcγRI 14.0 (3.7) 18.9 (4.5) 18.9 (8.7) 8.4 (1.9) <0.0001
FcγRII 13.1 (6.4) 18.5 (6.9) 18.7 (8.2) 11.7 (1.9) <0.0001
  1. WBC = white blood cell count, PMNL = polymorphonuclear leukocyte count, CRP = serum C-reactive protein, ESR = erythrocyte sedimentation rate.