Novel method for transdiaphragmatic pressure measurements in mice.

Novel method for transdiaphragmatic pressure measurements in mice.
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DOI:
10.1016/j.resp.2013.04.018
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发表时间:
2013-08-01
影响因子:
2.3
通讯作者:
Mantilla, Carlos B.
Mantilla, Carlos B.
中科院分区:
医学4区
文献类型:
--
作者:
Greising, Sarah M.;Sieck, Dylan C.;Sieck, Gary C.;Mantilla, Carlos B.

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The diaphragm muscle (DIAm) is responsible for breathing and determines the ability to generate both ventilatory and non-ventilatory behaviors. Size limitations of the mouse make transdiaphragmatic pressure (Pdi) measurement using a dual balloon system untenable. Adult C57BL/6J mice (n=8) and C57BL/6 × 129 (n=9), underwent Pdi measurements using solid-state pressure catheters spanning the thoracic and abdominal surfaces of the DIAm. Measurements were conducted during eupnea, hypoxia (10% O2)–hypercapnia (5% CO2), chemical airway stimulation (i.e., sneezing), spontaneously occurring deep breaths, sustained tracheal occlusion, and bilateral phrenic nerve stimulation. There was a difference in the Pdi generated across the range of ventilatory and non-ventilatory behaviors (p=0.001). No difference in Pdi across behaviors was evident between mouse strains (p=0.161). This study establishes a novel method to determine Pdi across a range of DIAm behaviors in mice that may be useful in evaluating conditions associated with reduced ability to perform expulsive, non-ventilatory behaviors.
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