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2016 ; 310
(7
): L630-8
Nephropedia Template TP
gab.com Text
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English Wikipedia
Treatment with intranasal iloprost reduces disease manifestations in a murine
model of previously established COPD
#MMPMID26851260
Lammi MR
; Ghonim MA
; Pyakurel K
; Naura AS
; Ibba SV
; Davis CJ
; Okpechi SC
; Happel KI
; deBoisblanc BP
; Shellito J
; Boulares AH
Am J Physiol Lung Cell Mol Physiol
2016[Apr]; 310
(7
): L630-8
PMID26851260
show ga
Pulmonary endothelial prostacyclin appears to be involved in the pathogenesis of
chronic obstructive pulmonary disease (COPD). The effect of treatment with a
prostacyclin analog in animal models of previously established COPD is unknown.
We evaluated the short- and long-term effect of iloprost on inflammation and
airway hyperresponsiveness (AHR) in a murine model of COPD. Nineteen mice were
exposed to LPS/elastase, followed by either three doses of intranasal iloprost or
saline. In the long-term treatment experiment, 18 mice were exposed to
LPS/elastase and then received 6 wk of iloprost or were left untreated as
controls. In the short-term experiment, iloprost did not change AHR but
significantly reduced serum IL-5 and IFN-?. Long-term treatment with iloprost for
both 2 and 6 wk significantly improved AHR. After 6 wk of iloprost, there was a
reduction in bronchoalveolar lavage (BALF) neutrophils, serum IL-1? (30.0 ± 9.2
vs. 64.8 ± 7.4 pg/ml, P = 0.045), IL-2 (36.5 ± 10.6 vs. 83.8 ± 0.4 pg/ml, P =
0.01), IL-10 (75.7 ± 9.3 vs. 96.5 ± 3.5 pg/ml, P = 0.02), and nitrite (15.1 ± 5.4
vs. 30.5 ± 10.7 ?mol, P = 0.01). Smooth muscle actin (SMA) in the lung homogenate
was also significantly reduced after iloprost treatment (P = 0.02), and SMA
thickness was reduced in the small and medium blood vessels after iloprost (P <
0.001). In summary, short- and long-term treatment with intranasal iloprost
significantly reduced systemic inflammation in an LPS/elastase COPD model.
Long-term iloprost treatment also reduced AHR, serum nitrite, SMA, and BALF
neutrophilia. These data encourage future investigations of prostanoid therapy as
a novel treatment for COPD patients.