TY - JOUR
T1 - Significance of IL-1β and IL-1 receptor antagonist (IL-1Ra) in bronchoalveolar lavage fluid (BALF) in patients with diffuse panbronchiolitis (DPB)
AU - Kadota, J.
AU - Matsubara, Y.
AU - Ishimatsu, Y.
AU - Ashida, M.
AU - Abe, K.
AU - Shirai, R.
AU - Iida, K.
AU - Kawakami, K.
AU - Taniguchi, H.
AU - Fujii, T.
AU - Kaseda, M.
AU - Kawamoto, S.
AU - Kohno, S.
PY - 1996
Y1 - 1996
N2 - We evaluated the effect of erythromycin therapy on pulmonary function tests and the airway inflammatory response of patients with DPB. The number of neutrophils in BALF obtained from DPB patients was significantly higher than that of healthy volunteers. Treatment with erythromycin (600 mg/day for 12.9 ± 9.5 months (mean ± s.d.)) significantly reduced the total number of cells and neutrophils in the airway, and significantly improved pulmonary function tests. The levels of IL-1β and IL-8 were significantly higher in DPB compared with healthy volunteers (P < 0.05, P < 0.05, respectively). IL-1Ra in patients is considered to have a weak inhibitory activity for IL-1β, with approximately five-fold concentration of IL-1β compared with that in healthy volunteers (approx. nine-fold concentration of IL-1β). Erythromycin therapy significantly reduced these cytokines to levels comparable to those of healthy volunteers, and produced a trend toward reduction in the level of IL-1Ra in BALF. The level of IL-1β correlated significantly with the concentration of neutrophils in BALF (r = 0.72, P < 0.01), as well as with the level of IL-1Ra (r = 0.688, P < 0.05) and IL-8 (r = 0.653, P < 0.05). A nearly significant or significant correlation was observed between the concentration of neutrophils and levels of IL-1Ra or IL-8 in BALF (r = 0.526, P = 0.053 or r = 0.776, P < 0.01, respectively). There was also a significant relationship between FEV1 and the concentration of neutrophils in BALF (r = 0.524, P < 0.05). Our results suggest that the relative amounts of IL-1β and IL-1Ra or IL-8 may contribute, at least in part, to the neutrophil-mediated chronic airway inflammation in patients with chronic airway disease, and long-term erythromycin therapy may down-regulate the vigorous cycle between the cytokine network and neutrophil accumulation, with resultant reduction of neutrophil-mediated inflammatory response.
AB - We evaluated the effect of erythromycin therapy on pulmonary function tests and the airway inflammatory response of patients with DPB. The number of neutrophils in BALF obtained from DPB patients was significantly higher than that of healthy volunteers. Treatment with erythromycin (600 mg/day for 12.9 ± 9.5 months (mean ± s.d.)) significantly reduced the total number of cells and neutrophils in the airway, and significantly improved pulmonary function tests. The levels of IL-1β and IL-8 were significantly higher in DPB compared with healthy volunteers (P < 0.05, P < 0.05, respectively). IL-1Ra in patients is considered to have a weak inhibitory activity for IL-1β, with approximately five-fold concentration of IL-1β compared with that in healthy volunteers (approx. nine-fold concentration of IL-1β). Erythromycin therapy significantly reduced these cytokines to levels comparable to those of healthy volunteers, and produced a trend toward reduction in the level of IL-1Ra in BALF. The level of IL-1β correlated significantly with the concentration of neutrophils in BALF (r = 0.72, P < 0.01), as well as with the level of IL-1Ra (r = 0.688, P < 0.05) and IL-8 (r = 0.653, P < 0.05). A nearly significant or significant correlation was observed between the concentration of neutrophils and levels of IL-1Ra or IL-8 in BALF (r = 0.526, P = 0.053 or r = 0.776, P < 0.01, respectively). There was also a significant relationship between FEV1 and the concentration of neutrophils in BALF (r = 0.524, P < 0.05). Our results suggest that the relative amounts of IL-1β and IL-1Ra or IL-8 may contribute, at least in part, to the neutrophil-mediated chronic airway inflammation in patients with chronic airway disease, and long-term erythromycin therapy may down-regulate the vigorous cycle between the cytokine network and neutrophil accumulation, with resultant reduction of neutrophil-mediated inflammatory response.
KW - Bronchoalveolar lavage
KW - Chronic airway disease
KW - Diffuse panbronchiolitis
KW - IL-1 receptor antagonist
KW - IL-1β
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U2 - 10.1111/j.1365-2249.1996.tb08303.x
DO - 10.1111/j.1365-2249.1996.tb08303.x
M3 - Article
C2 - 8608647
AN - SCOPUS:0029670319
VL - 103
SP - 461
EP - 466
JO - Clinical and Experimental Immunology
JF - Clinical and Experimental Immunology
SN - 0009-9104
IS - 3
ER -