Measurement of Nitric Oxide Release In the Isolated Perfused Rat Lung

In this study we have continuously measured real-time production of nitric oxide (NO) in the isolated, perfused rat lung by using an NO monitor (model NO-501, Inter Medical Co., Nagoya, Japan) with an NO-selective resin microsensor. A stable NO response was obtained when the sensor was placed in the...

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Bibliographic Details
Published in:Biochemical and biophysical research communications 1995-03, Vol.208 (3), p.1016-1020
Main Authors: Wang, D., Hsu, K., Hwang, C.P., Chen, H.I.
Format: Article
Language:English
Subjects:
Animals
Arginine - pharmacology
Endotoxins - pharmacology
Hypoxia
In Vitro Techniques
Kinetics
Lung - drug effects
Lung - metabolism
Nitric Oxide - biosynthesis
Perfusion
Pulmonary Artery - physiology
Pulmonary Veins - physiology
Rats
Rats, Sprague-Dawley
Time Factors
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Summary:In this study we have continuously measured real-time production of nitric oxide (NO) in the isolated, perfused rat lung by using an NO monitor (model NO-501, Inter Medical Co., Nagoya, Japan) with an NO-selective resin microsensor. A stable NO response was obtained when the sensor was placed in the pulmonary artery or the pulmonary vein; in contrast, the tracings obtained from the lung periphery were unstable. Furthermore, the NO release was higher when the isolated lungs were perfused with physiological salt solution rather than whole blood perfusion. Changes in NO production were also monitored in acute hypoxia and reoxygenation. Pretreatment with endotoxin (10mg/kg) potentiated the NO release observed, and this effect of endotoxin was further potentiated by arginine (1 × 10−4 M) and acetylcholine (1 × 10−5 M) and countered by the NO synthase inhibitor, L-NG-nitro-arginine methyl ester (L-NAME; 1 × 10−3 M).
ISSN:0006-291X
1090-2104
DOI:10.1006/bbrc.1995.1435