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Updated: Aug 7, 2026
Label-free Neutrophil Enrichment from Patient-derived Airway Secretion Using Closed-loop Inertial Microfluidics
Published on: June 7, 2018
Protective effects of ONO-5046*Na, a specific neutrophil elastase inhibitor, on postperfusion lung injury
T Yamazaki1, H Ooshima, A Usui
1Department of Thoracic Surgery, Nagoya University School of Medicine, Japan.
Background:
Polymorphonuclear neutrophil elastase might contribute to postperfusion lung injury, so we evaluated the protective effect of ONO-5046*Na, a specific inhibitor of polymorphonuclear neutrophil elastase, against such an injury.
Methods:
The study was done using 8 mongrel dogs that received ONO-5046*Na (15 mg/kg per hour) (group O) and 8 control dogs (group C), all of which had 1 hour of partial bypass and 5 hours of observation.
Results:
The respiratory index showed no significant changes in group O, but increased significant in group C (1.4+/-2.0 versus 5.1+/-4.7, p = 0.0047). Pulmonary extravascular water volume increased markedly in group C but only slightly in group O (group C 20.6+/-8.7, group O 11.2+/- 2.7 mL/kg; p = 0.0005). Blood concentrations of polymorphonuclear neutrophil elastase and interleukin-6 showed more than a tenfold increase in group C (PMN elastase, group C 12.9+/-12.8, group O 2.4+/-1.3 ng/mL; IL-b, group C 11.0+/-9.3, group O 2.9+/-3.8 pg/mL; p < 0.05) but were only slightly higher in group O. Histologic examination revealed interstitial and intraalveolar edema in group C, but group O was virtually normal.
Conclusions:
ONO-5046*Na inhibits polymorphonuclear neutrophil elastase and maintains better pulmonary function, so it should reduce postperfusion lung injury.
