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Table 1 Cytokine concentration (pg/ml) in cell culture supernatant following in vitro K. pneumoniae infection of Alveolar Macrophages

From: Inhaled fluticasone propionate impairs pulmonary clearance of Klebsiella Pneumoniae in mice

Vehicle-Exposed AM

IL-6

IP-10

KC

LIX

MCP-1

MIP-1a

MIP-1b

MIP-2

TNFa

PBS

5.54 (4.54)

43.96 (2.44)

166.47 (11.12)

79.93 (15.99)

61.07 (5.78)

68.53 (4.30)

26.05 (8.24)

1,225.18 (36.94)

52.07 (0.93)

Klebseilla

2,506.37 (167.12)

122.53 (5.10)

13,917.04 (198.04)

1,518.32 (57.78)

68.74 (2.19)

10,038.19 (180.37)

9,318.00 (1,764.90)

41,802.27 (6,019.32)

2,012.61 (724.25)

Klebs + 10 nm FP

661.80* (36.50)

125.74 (3.51)

8,254.84* (268.01)

931.97* (21.59)

47.11* (1.71)

7,731.08* (161.64)

3,795.81* (200.74)

11,881.55* (622.15)

1,141.86 (100.01)

Klebs + 100 nm FP

472.29*# (23.18)

116.16 (6.96)

7,912.98* (271.24)

818.89* (22.82)

35.31*# (1.13)

6,674.62*# (252.86)

3,252.32*# (82.53)

11,441.20 (736.01)

1,101.10 (62.84)

FP-Exposed AM

         

PBS

1.00 (0)

8.99 (1.23)

84.31 (1.72)

2.59 (1.59)

43.29 (5.49)

34.76 (2.98)

3.54 (2.54)

520.03 (26.90)

19.73 (0.85)

Klebseilla

828.87 (85.73)

122.38 (10.04)

9,891.14 (525.77)

1,056.19 (55.29)

50.38 (2.22)

9,111.51 (146.05)

5,640.23 (776.27)

14,296.83 (700.94)

1,096.82 (115.99)

Klebs + 10 nm FP

354.74* (23.31)

105.06 (5.47)

7,472.76* (459.38)

746.89* (45.01)

33.22* (1.35)

6,636.20* (378.28)

3,670.30* (228.33)

10,762.57* (557.97)

1,066.93 (71.74)

Klebs + 100 nm FP

327.28* (27.06)

107.73 (5.09)

6,492.42 (130.07)

701.09* (44.26)

25.64*# (0.90)

5,610.73*# (188.29)

3,511.53* (121.10)

8,612.62*# (355.80)

1,029.21 (122.45)

  1. Cytokine expression by vehicle and FP-treated murine AM 4 h after in vitro stimulation with K. pneumoniae. The top four rows show mean and (SEM) cytokine responses by AM lavaged from vehicle treated mice, and bottom four rows are for AM from FP-treated mice. Some groups were also pre-treated in vitro for 2 h with FP (10 or 100 nM) before infection. Results suggest a dose-dependent effect of in vitro FP exposure on AM recovered from either naïve or FP nebulized mice. n = 6 per group. * p < 0.05 vs. Klebsiella exposure group; # p < 0.05 vs. Klebsiella + 10 nM FP group.