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Japanese

Morphological Observation of the Rat Lungs after Nitric Oxide Inhalation Ichizo Tsujino 1 , Tsuyoshi Nakano 1 , Kenji Miyamoto 1 , Shunichi Saito 1 , Akira Aida 1 , Masaharu Nishimura 1 , Yoshikazu Kawakami 1 1First Department of Midicine, Hokkaido University School of Medicine Keyword: 一酸化窒素 , 二酸化窒素 , 肺障害 , nitric oxide , nitric dioxide , lung injury pp.397-401
Published Date 1996/4/15
DOI https://doi.org/10.11477/mf.1404901235
  • Abstract
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Although inhalation of nitric oxide (NO) has come to be used as a new therapeutic modality for primary pulmonary hypertension and adult respiratory distress syndome, little attention has been paid to its toxicity to the lungs. In this study, we morphologically investigat-ed the effects of a two-hour inhalation of 100 ppm NO on rat lungs. Microscopic examinations were perfor-med in the lungs immediately and 22 hours after the inhalation of NO. There was no evidence of infiltration with inflammatory cells in the alveolar wall or fluid flooding in the alveoli. Observations by an electron microscopy showed no morphological changes in the alveolar epithelium, cilia and clara cells.

We thus conclude that a 2-hour inhalation of 100 ppm of NO has morphologically no harmful effect on rat lungs.


Copyright © 1996, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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