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Table 4 Effects of dexamethasone and MK-571 on 5-LO pathway enzymes and LT receptors in HBFs.

From: Human bronchial fibroblasts express the 5-lipoxygenase pathway

Enzymes/Receptors

Control*

Dexamethasone

MK-571

5-LO

7.6 ± 2.2

5.7 ± 2.0

7.5 ± 2.6

FLAP

9.3 ± 3.3

6.3 ± 2.5

5.3 ± 2.0

LTA 4 H

7.8 ± 2.1

5.3 ± 1.6

5.2 ± 0.9

LTC 4 S

0.3 ± 0.2

0.7 ± 0.4

0.5 ± 0.2

BLT1

4.8 ± 1.1

4.5 ± 1.3

3.9 ± 0.9

CysLT 1

11.7 ± 3.5

5.6 ± 1.4

16.0 ± 6.9

  1. * Fibroblasts were cultured for 24 hours with the glucocorticoid dexamethasone (1 μM), the CysLT1 receptor antagonist MK-571 (10 nM), or control medium before staining with specific antibodies then analyzed by flow cytometry (Mean ± SEM, n = 9).
  2. Non-significant trend towards reduced expression compared to control, p = 0.066.
  3. p ≤ 0.05 versus Control.