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Hypoxia-induced ventilatory responses in conscious mice: gender differences in ventilatory roll-off and facilitation. | LitMetric

AI Article Synopsis

Article Abstract

The aim of this study was to compare the ventilatory responses of C57BL6 female and male mice during a 15 min exposure to a hypoxic-hypercapnic (H-H) or a hypoxic (10% O(2), 90% N(2)) challenge and subsequent return to room air. The ventilatory responses to H-H were similar in males and females whereas there were pronounced gender differences in the ventilatory responses during and following hypoxic challenge. In males, the hypoxic response included initial increases in minute volume via increases in tidal volume and frequency of breathing. These responses declined substantially (roll-off) during hypoxic exposure. Upon return to room-air, relatively sustained increases in these ventilatory parameters (short-term potentiation) were observed. In females, the initial responses to hypoxia were similar to those in males whereas roll-off was greater and post-hypoxia facilitation was smaller than in males. The marked differences in ventilatory roll-off and post-hypoxia facilitation between female and male C57BL6 mice provide evidence that gender is of vital importance to ventilatory control.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3593587PMC
http://dx.doi.org/10.1016/j.resp.2012.11.010DOI Listing

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