Respiratory mechanics and maximal expiratory flow in the anesthetized mouse

Y. L. Lai, H. C. Chou

研究成果: 雜誌貢獻文章同行評審

55 引文 斯高帕斯(Scopus)

摘要

Mice have been widely used in immunologic and other research to study the influence of different diseases on the lungs. However, the respiratory mechanical properties of the mouse are not clear. This study extended the methodology of measuring respiratory mechanics of anesthetized rats and guinea pigs and applied it to the mouse. First, we performed static pressure- volume and maximal expiratory flow-volume curves in 10 anesthetized paralyzed C57BL/6 mice. Second, in 10 mice, we measured dynamic respiratory compliance, forced expiratory volume in 0.1 s, and maximal expiratory flow before and after methacholine challenge. Averaged total lung capacity and functional residual capacity were 1.05 ± 0.04 and 0.25 ± 0.01 ml, respectively, in 20 mice weighing 22.2 ± 0.4 g. The chest wall was very compliant. In terms of vital capacity (VC) per second, maximal expiratory flow values were 13.5, 8.0, and 2.8 VC/s at 75, 50, and 25% VC, respectively. Maximal flow-static pressure curves were relatively linear up to pressure equal to 9 cmH2O. In addition, methacholine challenge caused significant decreases in respiratory compliance, forced expiratory volume in 0.1 s, and maximal expiratory flow, indicating marked airway constriction. We conclude that respiratory mechanical parameters of mice (after normalization with body weight) are similar to those of guinea pigs and rats and that forced expiratory maneuver is a useful technique to detect airway constriction in this species.

原文英語
頁(從 - 到)939-943
頁數5
期刊Journal of Applied Physiology
88
發行號3
出版狀態已發佈 - 3月 2000
對外發佈

ASJC Scopus subject areas

  • 生理學
  • 內分泌
  • 骨科和運動醫學
  • 物理治療、運動療法和康復

指紋

深入研究「Respiratory mechanics and maximal expiratory flow in the anesthetized mouse」主題。共同形成了獨特的指紋。

引用此